{"id":38422,"date":"2025-05-18T09:59:43","date_gmt":"2025-05-18T09:59:43","guid":{"rendered":"https:\/\/chineselens.com\/?p=38422"},"modified":"2025-05-18T10:03:44","modified_gmt":"2025-05-18T10:03:44","slug":"convex-lens-vs-concave-lens","status":"publish","type":"post","link":"https:\/\/chineselens.com\/cs\/convex-lens-vs-concave-lens\/","title":{"rendered":"Konvexn\u00ed \u010do\u010dka vs. konk\u00e1vn\u00ed \u010do\u010dka"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"38422\" class=\"elementor elementor-38422\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d2fcc73 e-flex e-con-boxed e-con e-parent\" data-id=\"d2fcc73\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f0c033c elementor-widget elementor-widget-text-editor\" data-id=\"f0c033c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 data-pm-slice=\"1 1 []\">Pochopen\u00ed rozd\u00edl\u016f mezi objektivy<\/h2><p>Tato komplexn\u00ed p\u0159\u00edru\u010dka porovn\u00e1v\u00e1 konvexn\u00ed a konk\u00e1vn\u00ed \u010do\u010dky a vysv\u011btluje jejich fyziku lomu sv\u011btla, rozd\u00edly ve formov\u00e1n\u00ed obrazu a jejich re\u00e1ln\u00e9 vyu\u017eit\u00ed v br\u00fdl\u00edch, fotoapar\u00e1tech a v\u011bdeck\u00fdch p\u0159\u00edstroj\u00edch. Nau\u010dte se, jak vybrat spr\u00e1vn\u00fd typ \u010do\u010dky pro pot\u0159eby konvergence\/divergence sv\u011btla a z\u00e1rove\u0148 optimalizovat v\u00fdkon optick\u00e9ho syst\u00e9mu.<\/p><p>Prozkoumejte kl\u00ed\u010dov\u00e9 rozd\u00edly mezi konvexn\u00edmi a konk\u00e1vn\u00edmi \u010do\u010dkami.<\/p><div class=\"qc-default-table-wrapper\"><table><colgroup> <col \/> <col \/> <col \/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">Vlastnosti<\/p><\/th><th style=\"text-align: left;\" colspan=\"1\" rowspan=\"1\"><p>konvexn\u00ed \u010do\u010dka<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">konk\u00e1vn\u00ed \u010do\u010dka<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Tvar<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vyboulen\u00e9 sm\u011brem ven, tlust\u0161\u00ed uprost\u0159ed.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Zak\u0159iven\u00e9 dovnit\u0159, ten\u010d\u00ed uprost\u0159ed.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Sv\u011bteln\u00e9 chov\u00e1n\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Sb\u00edh\u00e1 sv\u011bteln\u00e9 paprsky do bodu.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Rozb\u00edh\u00e1 sv\u011bteln\u00e9 paprsky sm\u011brem ven.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Typ obr\u00e1zku<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Dok\u00e1\u017ee vytv\u00e1\u0159et re\u00e1ln\u00e9 i virtu\u00e1ln\u00ed obrazy.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u017edy vytv\u00e1\u0159\u00ed virtu\u00e1ln\u00ed obrazy.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Orientace obrazu<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vytv\u00e1\u0159\u00ed obrazy vzh\u016fru nohama.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vytv\u00e1\u0159\u00ed vzp\u0159\u00edmen\u00e9 obrazy.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Velikost obr\u00e1zku<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u016f\u017ee zv\u011bt\u0161ovat obr\u00e1zky.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u017edycky d\u011bl\u00e1 men\u0161\u00ed obr\u00e1zky.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>B\u011b\u017en\u00e9 pou\u017eit\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Pou\u017e\u00edv\u00e1 se ve zv\u011bt\u0161ovac\u00edch br\u00fdl\u00edch a fotoapar\u00e1tech.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Pou\u017e\u00edv\u00e1 se v kuk\u00e1tk\u00e1ch a br\u00fdl\u00edch pro kr\u00e1tkozrakost.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Ohniskov\u00e1 vzd\u00e1lenost<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00e1 kladnou ohniskovou vzd\u00e1lenost.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u00e1 z\u00e1pornou ohniskovou vzd\u00e1lenost.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Aplikace<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Pou\u017e\u00edv\u00e1 se v projektorech a mikroskopech.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Pou\u017e\u00edv\u00e1 se v dalekohledech a laserov\u00fdch za\u0159\u00edzen\u00edch.<\/p><\/td><\/tr><\/tbody><\/table><\/div><p>\u010co\u010dky jsou d\u016fle\u017eit\u00e9 pro <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/chineselens.com\/cs\/what-is-collimating-lens\/\" target=\"_blank\" rel=\"nofollow noopener\">zm\u011bna zp\u016fsobu pohybu sv\u011btla<\/a><\/em><\/span>Konvexn\u00ed \u010do\u010dka se vyboul\u00ed ven a shroma\u017e\u010fuje sv\u011bteln\u00e9 paprsky na jednom m\u00edst\u011b. Konk\u00e1vn\u00ed \u010do\u010dka se zak\u0159ivuje dovnit\u0159 a rozptyluje sv\u011bteln\u00e9 paprsky. Tyto \u010do\u010dky se pou\u017e\u00edvaj\u00ed v za\u0159\u00edzen\u00edch, jako jsou br\u00fdle a fotoapar\u00e1ty. Znalost jejich specifick\u00fdch vlastnost\u00ed ukazuje, jak zp\u0159es\u0148uj\u00ed obraz a pom\u00e1haj\u00ed s vid\u011bn\u00edm v r\u016fzn\u00fdch n\u00e1stroj\u00edch.<\/p><h2>Kl\u00ed\u010dov\u00e9 v\u011bci<\/h2><ul><li><p>Konvexn\u00ed \u010do\u010dky se zak\u0159ivuj\u00ed sm\u011brem ven a sv\u00e1d\u011bj\u00ed sv\u011bteln\u00e9 paprsky dohromady. Pou\u017e\u00edvaj\u00ed se ke zv\u011bt\u0161en\u00ed a korekci dalekozrakosti.<\/p><\/li><li><p>Konk\u00e1vn\u00ed \u010do\u010dky se zak\u0159ivuj\u00ed dovnit\u0159 a rozptyluj\u00ed sv\u011bteln\u00e9 paprsky. Pom\u00e1haj\u00ed vytv\u00e1\u0159et virtu\u00e1ln\u00ed obrazy a koriguj\u00ed kr\u00e1tkozrakost.<\/p><\/li><li><p>Konvexn\u00ed \u010do\u010dky mohou vytv\u00e1\u0159et skute\u010dn\u00e9 nebo virtu\u00e1ln\u00ed obrazy. Konk\u00e1vn\u00ed \u010do\u010dky vytv\u00e1\u0159ej\u00ed pouze virtu\u00e1ln\u00ed obrazy, kter\u00e9 jsou svisl\u00e9 a men\u0161\u00ed.<\/p><\/li><li><p>Vyberte si objektiv na z\u00e1klad\u011b jeho funkce. Konvexn\u00ed \u010do\u010dky jsou skv\u011bl\u00e9 pro zv\u011bt\u0161ov\u00e1n\u00ed a konk\u00e1vn\u00ed \u010do\u010dky jsou vhodn\u00e9 pro \u0161irok\u00e9 z\u00e1b\u011bry.<\/p><\/li><li><p>Fotoapar\u00e1ty a projektory pou\u017e\u00edvaj\u00ed konvexn\u00ed \u010do\u010dky k po\u0159\u00edzen\u00ed jasn\u00e9ho obrazu. Konk\u00e1vn\u00ed \u010do\u010dky se pou\u017e\u00edvaj\u00ed v kuk\u00e1tk\u00e1ch a dalekohledech.<\/p><\/li><li><p>Znalost tvar\u016f \u010do\u010dek v\u00e1m pom\u016f\u017ee vybrat ty spr\u00e1vn\u00e9 pro va\u0161e o\u010di nebo n\u00e1stroje.<\/p><\/li><li><p>Pou\u017eit\u00ed konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek dohromady zlep\u0161uje kvalitu obrazu vyv\u00e1\u017een\u00edm jejich vlastnost\u00ed.<\/p><\/li><li><p>Pamatujte: konk\u00e1tn\u00ed \u010do\u010dky \u201evystupuj\u00ed\u201c a konk\u00e1vn\u00ed \u010do\u010dky \u201ezakukluj\u00ed\u201c. To je snadn\u00e9 je od sebe odli\u0161it.<\/p><\/li><\/ul><h2>Co je to konvexn\u00ed \u010do\u010dka?<\/h2><figure class=\"aligncenter qc-single-image-wrapper\"><div><p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-38466\" src=\"https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/convex-lens.webp\" alt=\"konvexn\u00ed \u010do\u010dka\" width=\"900\" height=\"383\" srcset=\"https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/convex-lens.webp 900w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/convex-lens-300x128.webp 300w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/convex-lens-768x327.webp 768w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/convex-lens-18x8.webp 18w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/p><\/div><h3 class=\"qc-image-resizable-wrapper\">Definice a vlastnosti konvexn\u00ed \u010do\u010dky<\/h3><\/figure><h4>Fyzick\u00e1 struktura a tvar<\/h4><p><a href=\"https:\/\/www.geeksforgeeks.org\/convex-lens\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"text-decoration: underline;\"><em>Konvexn\u00ed \u010do\u010dka m\u00e1 speci\u00e1ln\u00ed tvar, kter\u00fd je snadno viditeln\u00fd<\/em><\/span>.<\/a> Je tlust\u0161\u00ed uprost\u0159ed a ten\u010d\u00ed na okraj\u00edch. Tento tvar mu pom\u00e1h\u00e1 oh\u00fdbat sv\u011btlo dovnit\u0159. Optick\u00fd st\u0159ed je bod na hlavn\u00ed ose, kudy sv\u011btlo proch\u00e1z\u00ed rovn\u011b bez oh\u00fdb\u00e1n\u00ed. <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/www.scienceprojects.org\/lenses-effects-of-curvature-materials-on-light-beams\/\" target=\"_blank\" rel=\"nofollow noopener\">Zak\u0159iven\u00ed objektivu ur\u010duje jeho ohniskovou vzd\u00e1lenost<\/a>,<\/em><\/span> co\u017e je vzd\u00e1lenost k bodu, kde se setk\u00e1vaj\u00ed sv\u011bteln\u00e9 paprsky.<\/p><h4>Jak konvexn\u00ed \u010do\u010dka sb\u00edh\u00e1 sv\u011bteln\u00e9 paprsky<\/h4><p>Kdy\u017e sv\u011btlo proch\u00e1z\u00ed konk\u00e1tn\u00ed \u010do\u010dkou, paprsky se sv\u00edj\u00ed dovnit\u0159 a setk\u00e1vaj\u00ed se v jedn\u00e9 bod\u011b naz\u00fdvan\u00e9 \u0641\u0648\u0643\u0633. To se d\u011bje kv\u016fli curvi\u010dnosti \u010do\u010dky. Tato schopnost sv\u011btlo spojovat ji \u010din\u00ed skv\u011blou pro zv\u011bt\u0161ov\u00e1n\u00ed v\u011bc\u00ed nebo soust\u0159ed\u011bn\u00ed sv\u011btla v za\u0159\u00edzen\u00edch.<\/p><h3>Tvorba obrazu konvexn\u00ed \u010do\u010dkou<\/h3><h4>Skute\u010dn\u00e9 a invertovan\u00e9 obrazy<\/h4><p>Konvexn\u00ed \u010do\u010dka m\u016f\u017ee vytvo\u0159it <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/pressbooks.online.ucf.edu\/phy2053bc\/chapter\/image-formation-by-lenses\/\" target=\"_blank\" rel=\"nofollow noopener\">skute\u010dn\u00e9 a obr\u00e1cen\u00e9 obrazy<\/a><\/em><\/span>Pokud je objekt um\u00edst\u011bn za hranic\u00ed ohniskov\u00e9 vzd\u00e1lenosti, sv\u011bteln\u00e9 paprsky se setkaj\u00ed na druh\u00e9 stran\u011b a vytvo\u0159\u00ed obraz. Tento obraz se p\u0159evr\u00e1t\u00ed a lze jej zobrazit na pl\u00e1tn\u011b. Fotoapar\u00e1ty a projektory tuto funkci vyu\u017e\u00edvaj\u00ed k vytv\u00e1\u0159en\u00ed jasn\u00fdch obraz\u016f.<\/p><h4>Virtu\u00e1ln\u00ed a zv\u011bt\u0161en\u00e9 obrazy<\/h4><p>Pokud je objekt bl\u00ed\u017ee k objektivu, ne\u017e je jeho ohniskov\u00e1 vzd\u00e1lenost, objektiv vytvo\u0159\u00ed virtu\u00e1ln\u00ed obraz. Tento obraz vypad\u00e1 vzp\u0159\u00edmen\u011b a je v\u011bt\u0161\u00ed ne\u017e objekt. Tento obraz nelze zobrazit na obrazovce, ale funguje dob\u0159e v n\u00e1stroj\u00edch, jako jsou lupy.<\/p><h3>B\u011b\u017en\u00e9 pou\u017eit\u00ed konvexn\u00edch \u010do\u010dek<\/h3><h4>Lupy a optick\u00e9 p\u0159\u00edstroje<\/h4><p>Konvexn\u00ed \u010do\u010dky jsou d\u016fle\u017eit\u00e9 u lup. D\u00edky nim mal\u00e9 p\u0159edm\u011bty vypadaj\u00ed v\u011bt\u0161\u00ed a l\u00e9pe se daj\u00ed vid\u011bt. Za\u0159\u00edzen\u00ed jako mikroskopy a dalekohledy tyto \u010do\u010dky tak\u00e9 pou\u017e\u00edvaj\u00ed k zaost\u0159ov\u00e1n\u00ed sv\u011btla a zobrazov\u00e1n\u00ed detail\u016f vzd\u00e1len\u00fdch nebo mal\u00fdch objekt\u016f.<\/p><h4>Korekce zraku pro dalekozrakost<\/h4><p><em><span style=\"text-decoration: underline;\"><a href=\"https:\/\/chineselens.com\/cs\/differences-mirrors-and-lenses\/\" target=\"_blank\" rel=\"nofollow noopener\">Konvexn\u00ed \u010do\u010dky pom\u00e1haj\u00ed lidem s dalekozrakost\u00ed<\/a> <\/span><\/em>jasn\u011b vid\u00ed bl\u00edzk\u00e9 v\u011bci. Upravuj\u00ed zp\u016fsob, jak\u00fdm sv\u011btlo vstupuje do o\u010d\u00ed, aby se spr\u00e1vn\u011b zaost\u0159ilo na s\u00edtnici. To usnad\u0148uje \u010dten\u00ed a pr\u00e1ci zbl\u00edzka.<\/p><h2>Co je to konk\u00e1vn\u00ed \u010do\u010dka?<\/h2><figure class=\"aligncenter qc-single-image-wrapper\"><div class=\"qc-image-resizable-wrapper\">\u00a0<\/div><\/figure><p><img decoding=\"async\" class=\"size-full wp-image-38465\" src=\"https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/concave-lens.webp\" alt=\"konk\u00e1vn\u00ed \u010do\u010dka\" width=\"900\" height=\"383\" srcset=\"https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/concave-lens.webp 900w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/concave-lens-300x128.webp 300w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/concave-lens-768x327.webp 768w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/concave-lens-18x8.webp 18w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/p><h3>Definice a vlastnosti konk\u00e1vn\u00ed \u010do\u010dky<\/h3><h4>Fyzick\u00e1 struktura a tvar<\/h4><p>A <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/chineselens.com\/cs\/optical-components-types\/\" target=\"_blank\" rel=\"nofollow noopener\">konk\u00e1vn\u00ed \u010do\u010dka se zak\u0159ivuje dovnit\u0159<\/a><\/em><\/span>, p\u0159ipom\u00ednaj\u00edc\u00ed tvar m\u00edsy. Je tenk\u00fd uprost\u0159ed a tlust\u00fd na okraj\u00edch. D\u00edky tomuto designu rozptyluje sv\u011bteln\u00e9 paprsky sm\u011brem ven, neboli je rozb\u00edh\u00e1. Jeho ohniskov\u00e1 vzd\u00e1lenost je z\u00e1porn\u00e1, co\u017e znamen\u00e1, \u017ee ohnisko je na stejn\u00e9 stran\u011b jako p\u0159ich\u00e1zej\u00edc\u00ed sv\u011btlo.<\/p><h4>Jak konk\u00e1vn\u00ed \u010do\u010dka rozptyluje sv\u011bteln\u00e9 paprsky<\/h4><p>Kdy\u017e sv\u011btlo vstoup\u00ed do konk\u00e1vn\u00ed \u010do\u010dky, paprsky se rozptyluj\u00ed sm\u011brem ven. Pohybuj\u00ed se od st\u0159edov\u00e9 \u010d\u00e1ry neboli optick\u00e9 osy. Rozb\u00edhav\u00e9 paprsky se p\u0159i sledov\u00e1n\u00ed zp\u011btn\u00e9ho sm\u011bru zdaj\u00ed b\u00fdt setk\u00e1v\u00e1ny ve virtu\u00e1ln\u00edm bod\u011b. Na rozd\u00edl od <strong>konvexn\u00ed \u010do\u010dky<\/strong>, <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/chineselens.com\/cs\/differences-mirrors-and-lenses\/\" target=\"_blank\" rel=\"nofollow noopener\">konk\u00e1vn\u00ed \u010do\u010dky nemohou propou\u0161t\u011bt sv\u011btlo<\/a> <\/em><\/span>spole\u010dn\u011b vytv\u00e1\u0159et skute\u010dn\u00e9 obrazy.<\/p><h3>Tvorba obrazu konk\u00e1vn\u00ed \u010do\u010dkou<\/h3><h4>Virtu\u00e1ln\u00ed a vertik\u00e1ln\u00ed obrazy<\/h4><p>Konk\u00e1vn\u00ed \u010do\u010dky v\u017edy <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/phys.libretexts.org\/Courses\/Coalinga_College\/Physical_Science_for_Educators_%28CID%3A_PHYS_14%29\/16%3A_Reflections_and_Refraction_of_Waves\/16.02%3A_Optics\/16.2.08%3A_Double_Concave_Lenses\" target=\"_blank\" rel=\"noopener\">vytv\u00e1\u0159et virtu\u00e1ln\u00ed obrazy<\/a><\/em><\/span>Tyto obrazy z\u016fst\u00e1vaj\u00ed ve svisl\u00e9 poloze a objevuj\u00ed se na stejn\u00e9 stran\u011b jako objekt. Proto\u017ee \u010do\u010dka rozptyluje sv\u011btlo, obraz nelze zobrazit na obrazovce.<\/p><h4>Zmen\u0161en\u00e1 velikost obr\u00e1zku<\/h4><p>Sn\u00edmky po\u0159\u00edzen\u00e9 konk\u00e1vn\u00edmi \u010do\u010dkami jsou men\u0161\u00ed ne\u017e objekt. D\u00edky tomu jsou u\u017eite\u010dn\u00e9 pro n\u00e1stroje jako<span style=\"text-decoration: underline;\"><em> <a href=\"https:\/\/paireyewear.com\/en-US\/blogs\/news\/convex-vs-concave-lens\" target=\"_blank\" rel=\"nofollow noopener\">kuk\u00e1tka<\/a><\/em><\/span>, kde je d\u016fle\u017eit\u00fd v\u00fdhled do \u0161irok\u00e9ho okol\u00ed.<\/p><h3>B\u011b\u017en\u00e9 pou\u017eit\u00ed konk\u00e1vn\u00edch \u010do\u010dek<\/h3><h4>Korekce zraku pro kr\u00e1tkozrakost<\/h4><p>Konk\u00e1vn\u00ed \u010do\u010dky pom\u00e1haj\u00ed opravit kr\u00e1tkozrakost. V t\u00e9to podm\u00ednce o\u010di soust\u0159ed\u00ed sv\u011btlo p\u0159ed s\u00edtnic\u00ed m\u00edsto na ni. Konk\u00e1vn\u00ed \u010do\u010dka m\u011bn\u00ed cestu sv\u011btla, tak\u017ee se spr\u00e1vn\u011b soust\u0159ed\u00ed na s\u00edtnici. To v\u00e1m pom\u00e1h\u00e1 vid\u011bt dalek\u00e9 objekty jasn\u011b.<\/p><h4>Kuk\u00e1tka a optick\u00e1 za\u0159\u00edzen\u00ed<\/h4><p>Konk\u00e1vn\u00ed \u010do\u010dky jsou kl\u00ed\u010dov\u00e9 u kuk\u00e1tek. Umo\u017e\u0148uj\u00ed vid\u011bt \u0161irokou oblast za dve\u0159mi. To v\u00e1m pom\u016f\u017ee zkontrolovat, kdo je uvnit\u0159, ani\u017e byste je museli otev\u00edrat. Pou\u017e\u00edvaj\u00ed se tak\u00e9 v n\u00e1stroj\u00edch, jako jsou dalekohledy a teleskopy, k nav\u00e1d\u011bn\u00ed sv\u011btla a zlep\u0161en\u00ed jasnosti.<\/p><blockquote><p><strong>Pozn\u00e1mka:<\/strong> R\u016fzn\u00e9 typy konk\u00e1vn\u00edch \u010do\u010dek funguj\u00ed jedine\u010dn\u00fdm zp\u016fsobem. Nap\u0159\u00edklad bikonk\u00e1vn\u00ed \u010do\u010dky rozptyluj\u00ed sv\u011btlo a zmen\u0161uj\u00ed obraz, zat\u00edmco plankonk\u00e1vn\u00ed \u010do\u010dky sni\u017euj\u00ed zkreslen\u00ed obrazu.<\/p><\/blockquote><div class=\"qc-default-table-wrapper\"><table><colgroup> <col \/> <col \/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\"><span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/evidentscientific.com\/en\/microscope-resource\/tutorials\/lenses\/diverginglenses\" target=\"_blank\" rel=\"nofollow noopener\">Typ objektivu<\/a><\/em><\/span><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">Funk\u010dnost<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Bikonk\u00e1vn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Rozptyluje sv\u011btlo, vytv\u00e1\u0159\u00ed virtu\u00e1ln\u00ed obrazy, zmen\u0161uje velikost obrazu, zv\u011bt\u0161uje ohniskovou vzd\u00e1lenost.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Planokonk\u00e1vn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vytv\u00e1\u0159\u00ed virtu\u00e1ln\u00ed obrazy, rozptyluje sv\u011btlo, sni\u017euje zkreslen\u00ed obrazu.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Negativn\u00ed meniskus<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Sni\u017euje zkreslen\u00ed obrazu, zkracuje ohniskovou vzd\u00e1lenost v optick\u00fdch syst\u00e9mech.<\/p><\/td><\/tr><\/tbody><\/table><\/div><h2>Kl\u00ed\u010dov\u00e9 rozd\u00edly mezi konk\u00e1vn\u00edmi a konvexn\u00edmi \u010do\u010dkami<\/h2><p><img decoding=\"async\" class=\"size-full wp-image-38389\" src=\"https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/converging-and-diverging-lens.webp\" alt=\"spojn\u00e1 a rozptyln\u00e1 \u010do\u010dka\" width=\"900\" height=\"600\" srcset=\"https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/converging-and-diverging-lens.webp 900w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/converging-and-diverging-lens-300x200.webp 300w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/converging-and-diverging-lens-768x512.webp 768w, https:\/\/chineselens.com\/wp-content\/uploads\/2025\/05\/converging-and-diverging-lens-18x12.webp 18w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/p><h3>Struktur\u00e1ln\u00ed rozd\u00edly<\/h3><h4>Tlou\u0161\u0165ka st\u0159edu vs. tlou\u0161\u0165ka okraje<\/h4><p>Tvar \u010do\u010dky ovliv\u0148uje jej\u00ed fungov\u00e1n\u00ed. A <a href=\"https:\/\/chineselens.com\/cs\/understanding-convex-lenses\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"text-decoration: underline;\"><em>konvexn\u00ed \u010do\u010dka<\/em><\/span><\/a> je tlust\u00e1 uprost\u0159ed a tenk\u00e1 na okraj\u00edch. Tento tvar oh\u00fdb\u00e1 sv\u011btlo dovnit\u0159 a zaost\u0159uje ho v jednom bod\u011b. Konk\u00e1vn\u00ed \u010do\u010dka je tenk\u00e1 uprost\u0159ed a tlust\u00e1 na okraj\u00edch. Tato konstrukce rozptyluje sv\u011btlo sm\u011brem ven, \u010d\u00edm\u017e ho rozb\u00edh\u00e1. Rozd\u00edl v tlou\u0161\u0165ce d\u00e1v\u00e1 ka\u017ed\u00e9 \u010do\u010dce jej\u00ed specifick\u00fd zp\u016fsob oh\u00fdb\u00e1n\u00ed sv\u011btla.<\/p><h3>Rozd\u00edly v chov\u00e1n\u00ed sv\u011btla<\/h3><h4>Sv\u011bteln\u00e9 paprsky: sb\u00edhaj\u00edc\u00ed se vs. rozb\u00edhaj\u00edc\u00ed se<\/h4><p>Jak ka\u017ed\u00e1 \u010do\u010dka zpracov\u00e1v\u00e1 sv\u011btlo, je snadno vid\u011bt. Konvexn\u00ed \u010do\u010dka shroma\u017e\u010fuje sv\u011bteln\u00e9 paprsky v ohnisku. D\u00edky tomu je u\u017eite\u010dn\u00e1 pro n\u00e1stroje, jako jsou fotoapar\u00e1ty a lupy. Konk\u00e1vn\u00ed \u010do\u010dka rozptyluje sv\u011bteln\u00e9 paprsky sm\u011brem ven. To je u\u017eite\u010dn\u00e9 u kuk\u00e1tek a br\u00fdl\u00ed pro kr\u00e1tkozrak\u00e9 lidi.<\/p><p><span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/testbook.com\/physics\/difference-between-concave-and-convex-lens\" target=\"_blank\" rel=\"nofollow noopener\">Zde je jednoduch\u00e9 srovn\u00e1n\u00ed jejich sv\u011bteln\u00e9ho chov\u00e1n\u00ed a tvorby obrazu<\/a><\/em><\/span>:<\/p><div class=\"qc-default-table-wrapper\"><table><colgroup> <col \/> <col \/> <col \/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Typ objektivu<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Sv\u011bteln\u00e9 chov\u00e1n\u00ed<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Tvorba obrazu<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Konvexn\u00ed \u010do\u010dka<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Spojuje sv\u011btlo dohromady<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vytv\u00e1\u0159\u00ed skute\u010dn\u00e9 obrazy<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Konk\u00e1vn\u00ed \u010do\u010dka<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Rozptyluje sv\u011btlo<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vytv\u00e1\u0159\u00ed virtu\u00e1ln\u00ed obrazy<\/p><\/td><\/tr><\/tbody><\/table><\/div><h3>Rozd\u00edly ve formov\u00e1n\u00ed obrazu<\/h3><h4>Re\u00e1ln\u00e9 obrazy vs. virtu\u00e1ln\u00ed obrazy<\/h4><p>Obrazy vytvo\u0159en\u00e9 ka\u017edou \u010do\u010dkou z\u00e1vis\u00ed na tom, jak l\u00e1me sv\u011btlo. Konvexn\u00ed \u010do\u010dka vytv\u00e1\u0159\u00ed skute\u010dn\u00e9 obrazy, kdy\u017e je objekt mimo svou ohniskovou vzd\u00e1lenost. Tyto obrazy jsou vzh\u016fru nohama a lze je zobrazit na obrazovce. Konk\u00e1vn\u00ed \u010do\u010dka v\u017edy vytv\u00e1\u0159\u00ed virtu\u00e1ln\u00ed obrazy. Tyto obrazy z\u016fst\u00e1vaj\u00ed vzp\u0159\u00edmen\u00e9 a nelze je zobrazit na obrazovce.<\/p><h4>V\u011bt\u0161\u00ed obr\u00e1zky vs. men\u0161\u00ed obr\u00e1zky<\/h4><p>Velikost obraz\u016f se tak\u00e9 li\u0161\u00ed. Konvexn\u00ed \u010do\u010dka vytv\u00e1\u0159\u00ed v\u011bt\u0161\u00ed obrazy, kdy\u017e je objekt bl\u00edzko. Proto se pou\u017e\u00edv\u00e1 ve zv\u011bt\u0161ovac\u00edch br\u00fdl\u00edch. M\u016f\u017ee tak\u00e9 vytv\u00e1\u0159et men\u0161\u00ed obrazy, kdy\u017e je objekt daleko. Konk\u00e1vn\u00ed \u010do\u010dka v\u017edy vytv\u00e1\u0159\u00ed men\u0161\u00ed obrazy. To je u\u017eite\u010dn\u00e9 pro v\u011bci, jako jsou kuk\u00e1tka, kde je pot\u0159eba \u0161irok\u00fd pohled.<\/p><p><a href=\"https:\/\/www.physicsclassroom.com\/class\/refrn\/Lesson-5\/Diverging-Lenses-Object-Image-Relations\" target=\"_blank\" rel=\"nofollow noopener\">Zde je podrobn\u00e9 srovn\u00e1n\u00ed vlastnost\u00ed obrazu<\/a>:<\/p><div class=\"qc-default-table-wrapper\"><table><colgroup> <col \/> <col \/> <col \/><\/colgroup><tbody><tr><th style=\"text-align: left;\" colspan=\"1\" rowspan=\"1\"><p>Charakteristick\u00fd<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Konk\u00e1vn\u00ed \u010do\u010dky<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Konvexn\u00ed \u010do\u010dky<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Typ obr\u00e1zku<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Virtu\u00e1ln\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nemovit\u00fd<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Orientace<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Sloupek<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vzh\u016fru nohama<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Velikost<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Men\u0161\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u011bt\u0161\u00ed nebo men\u0161\u00ed<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Um\u00edst\u011bn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Stejn\u00e1 strana jako objekt<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Opa\u010dn\u00e1 strana objektu<\/p><\/td><\/tr><\/tbody><\/table><\/div><p>Jedine\u010dn\u00e9 zp\u016fsoby, jak\u00fdmi konk\u00e1vn\u00ed a konvexn\u00ed \u010do\u010dky l\u00e1mou sv\u011btlo a vytv\u00e1\u0159ej\u00ed obraz, ukazuj\u00ed na jejich d\u016fle\u017eitost v optice. Znalost t\u011bchto rozd\u00edl\u016f v\u00e1m pom\u016f\u017ee vybrat ten spr\u00e1vn\u00fd objektiv pro va\u0161e pot\u0159eby.<\/p><h3>Shrnut\u00ed rozd\u00edl\u016f mezi konk\u00e1vn\u00edmi a konvexn\u00edmi \u010do\u010dkami<\/h3><h4>Tabulka porovn\u00e1vaj\u00edc\u00ed strukturu, chov\u00e1n\u00ed sv\u011btla a tvorbu obrazu<\/h4><p>Znalost rozd\u00edl\u016f mezi konk\u00e1vn\u00edmi a konvexn\u00edmi \u010do\u010dkami v\u00e1m pom\u016f\u017ee vybrat tu spr\u00e1vnou. Li\u0161\u00ed se tvarem, zp\u016fsobem lomu sv\u011btla a obrazy, kter\u00e9 vytv\u00e1\u0159ej\u00ed. N\u00ed\u017ee uveden\u00e1 tabulka ukazuje jejich hlavn\u00ed rozd\u00edly:<\/p><div class=\"qc-default-table-wrapper\"><table><colgroup> <col \/> <col \/> <col \/> <col \/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\"><strong>Typ objektivu<\/strong><\/p><\/th><th style=\"text-align: left;\" colspan=\"1\" rowspan=\"1\"><p><strong>Struktura<\/strong><\/p><\/th><th style=\"text-align: left;\" colspan=\"1\" rowspan=\"1\"><p><strong>Optick\u00e9 chov\u00e1n\u00ed<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\"><strong>Tvorba obrazu<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Konk\u00e1vn\u00ed<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Tenk\u00e9 uprost\u0159ed, siln\u00e9 na okraj\u00edch<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Rozptyluje sv\u011bteln\u00e9 paprsky sm\u011brem ven (rozptyluje sv\u011btlo)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u017edy vytv\u00e1\u0159\u00ed virtu\u00e1ln\u00ed, svisl\u00e9 a men\u0161\u00ed obr\u00e1zky.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Konvexn\u00ed<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Siln\u00e9 uprost\u0159ed, tenk\u00e9 na okraj\u00edch<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Oh\u00fdb\u00e1 sv\u011bteln\u00e9 paprsky dovnit\u0159 (sb\u00edh\u00e1 sv\u011btlo do jednoho bodu)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vytv\u00e1\u0159\u00ed skute\u010dn\u00e9, obr\u00e1cen\u00e9 obrazy nebo virtu\u00e1ln\u00ed, v\u011bt\u0161\u00ed obrazy na z\u00e1klad\u011b vzd\u00e1lenosti objektu.<\/p><\/td><\/tr><\/tbody><\/table><\/div><blockquote><p><strong>Tip:<\/strong> P\u0159edstavte si konk\u00e1vn\u00ed \u010do\u010dku jako \u201ezakukluj\u00edc\u00ed\u201c uprost\u0159ed, zat\u00edmco konk\u00e1tn\u00ed \u010do\u010dka \u201evystupuje\u201c. Tato trik v\u00e1m pom\u00e1h\u00e1 zapamatovat si jejich tvary a pou\u017eit\u00ed.<\/p><\/blockquote><p>Tvar ka\u017ed\u00e9 \u010do\u010dky ovliv\u0148uje, jak reaguje se sv\u011btlem. Konk\u00e1vn\u00ed \u010do\u010dka se zak\u0159ivuje dovnit\u0159 a rozptyluje sv\u011btlo. D\u00edky tomu je skv\u011bl\u00e1 pro kuk\u00e1tka a br\u00fdle pro kr\u00e1tkozrak\u00e9. Konvexn\u00ed \u010do\u010dka se zak\u0159ivuje ven a zaost\u0159uje sv\u011btlo na jedno m\u00edsto. D\u00edky tomu je u\u017eite\u010dn\u00e1 pro lupy, fotoapar\u00e1ty a korekci dalekozrakosti.<\/p><p>Pohled na to, jak vytv\u00e1\u0159ej\u00ed obrazy, ukazuje jejich r\u016fzn\u00e9 vyu\u017eit\u00ed. Konk\u00e1vn\u00ed \u010do\u010dka v\u017edy vytv\u00e1\u0159\u00ed men\u0161\u00ed, svisl\u00e9, virtu\u00e1ln\u00ed obrazy. Konvexn\u00ed \u010do\u010dka m\u016f\u017ee vytv\u00e1\u0159et skute\u010dn\u00e9, obr\u00e1cen\u00e9 obrazy nebo virtu\u00e1ln\u00ed, v\u011bt\u0161\u00ed, v z\u00e1vislosti na tom, jak bl\u00edzko je objekt k \u010do\u010dce.<\/p><p>Tyto rozd\u00edly ukazuj\u00ed, pro\u010d jsou konk\u00e1vn\u00ed a konvexn\u00ed \u010do\u010dky v optice d\u016fle\u017eit\u00e9. A\u0165 u\u017e pot\u0159ebujete zv\u011bt\u0161it, zaost\u0159it nebo vid\u011bt \u0161ir\u0161\u00ed pohled, znalost t\u011bchto detail\u016f v\u00e1m pom\u016f\u017ee vybrat spr\u00e1vnou \u010do\u010dku.<\/p><h2>Aplikace konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek<\/h2><h3>Praktick\u00e9 vyu\u017eit\u00ed konvexn\u00edch \u010do\u010dek<\/h3><h4>Korekce zraku pro dalekozrakost<\/h4><p><a href=\"https:\/\/chineselens.com\/cs\/understanding-convex-lenses\/\" target=\"_blank\" rel=\"nofollow noopener\"><em><span style=\"text-decoration: underline;\">Konvexn\u00ed \u010do\u010dky pom\u00e1haj\u00ed lidem<\/span><\/em><\/a> s dalekozrakost\u00ed, naz\u00fdvanou tak\u00e9 hyperopie. Pokud m\u00e1te pot\u00ed\u017ee s vid\u011bn\u00edm bl\u00edzk\u00fdch objekt\u016f, mohou v\u00e1m tyto \u010do\u010dky pomoci. Oh\u00fdbaj\u00ed sv\u011btlo dovnit\u0159, tak\u017ee se spr\u00e1vn\u011b zaost\u0159\u00ed na s\u00edtnici. D\u00edky tomu je \u010dten\u00ed a detailn\u00ed z\u00e1b\u011bry mnohem ost\u0159ej\u0161\u00ed.<\/p><p><span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/www.grandviewresearch.com\/industry-analysis\/prescription-lens-market\" target=\"_blank\" rel=\"nofollow noopener\">Pot\u0159eba dioptrick\u00fdch \u010do\u010dek<\/a><\/em><\/span> ukazuje, jak d\u016fle\u017eit\u00e9 jsou konvexn\u00ed \u010do\u010dky.<\/p><ul><li><p>St\u00e1le v\u00edce lid\u00ed pot\u0159ebuje br\u00fdle kv\u016fli probl\u00e9m\u016fm se zrakem, jako je hyperopie.<\/p><\/li><li><p>Jednoohniskov\u00e9 \u010do\u010dky, v\u010detn\u011b konvexn\u00edch, jsou \u0161iroce pou\u017e\u00edv\u00e1ny.<\/p><\/li><li><p>V asijsko-pacifick\u00e9m regionu roste popt\u00e1vka kv\u016fli nar\u016fstaj\u00edc\u00edm probl\u00e9m\u016fm se zrakem.<\/p><\/li><\/ul><p>Konvexn\u00ed \u010do\u010dky nejsou ur\u010deny jen pro jednotlivce, ale pom\u00e1haj\u00ed \u0159e\u0161it i glob\u00e1ln\u00ed probl\u00e9my se zrakem.<\/p><h4>Optick\u00e1 za\u0159\u00edzen\u00ed, jako jsou kamery a projektory<\/h4><p>Konvexn\u00ed \u010do\u010dky jsou kl\u00ed\u010dov\u00e9 v za\u0159\u00edzen\u00edch, kter\u00e1 p\u0159esn\u011b zaost\u0159uj\u00ed sv\u011btlo. Fotoapar\u00e1ty je pou\u017e\u00edvaj\u00ed k zachycen\u00ed sv\u011btla a vytv\u00e1\u0159en\u00ed ostr\u00fdch sn\u00edmk\u016f na filmu nebo sn\u00edma\u010d\u00edch. To zaji\u0161\u0165uje, \u017ee va\u0161e fotografie budou jasn\u00e9 a detailn\u00ed.<\/p><p>Projektory se tak\u00e9 spol\u00e9haj\u00ed na konvexn\u00ed \u010do\u010dky pro zv\u011bt\u0161en\u00ed obrazu na prom\u00edtac\u00ed plo\u0161e. Zaost\u0159uj\u00ed sv\u011btlo z mal\u00e9ho zdroje, aby vytvo\u0159ily v\u011bt\u0161\u00ed a jasn\u011bj\u0161\u00ed obrazy. Bez konvexn\u00edch \u010do\u010dek by tato za\u0159\u00edzen\u00ed nefungovala tak dob\u0159e.<\/p><h3>Praktick\u00e9 vyu\u017eit\u00ed konk\u00e1vn\u00edch \u010do\u010dek<\/h3><h4>Korekce zraku pro kr\u00e1tkozrakost<\/h4><p>Konk\u00e1vn\u00ed \u010do\u010dky pom\u00e1haj\u00ed lidem s kr\u00e1tkozrakost\u00ed neboli myopi\u00ed jasn\u011b vid\u011bt vzd\u00e1len\u00e9 objekty. Tyto \u010do\u010dky rozptyluj\u00ed sv\u011btlo sm\u011brem ven, tak\u017ee se spr\u00e1vn\u011b zaost\u0159\u00ed na s\u00edtnici. To zlep\u0161uje va\u0161i schopnost vid\u011bt v\u011bci, jako jsou dopravn\u00ed zna\u010dky nebo tabule ve t\u0159\u00edd\u011b.<\/p><p>Konk\u00e1vn\u00ed \u010do\u010dky jsou nezbytn\u00e9 pro korekci kr\u00e1tkozrakosti, onemocn\u011bn\u00ed postihuj\u00edc\u00edho miliony lid\u00ed. Jejich schopnost rozptylovat sv\u011btlo je \u010din\u00ed nezbytn\u00fdmi v br\u00fdl\u00edch a kontaktn\u00edch \u010do\u010dk\u00e1ch pro kr\u00e1tkozrak\u00e9 lidi.<\/p><h4>Za\u0159\u00edzen\u00ed jako dalekohledy a teleskopy<\/h4><p><span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/www.geeksforgeeks.org\/uses-of-concave-lens\/\" target=\"_blank\" rel=\"nofollow noopener\">Konk\u00e1vn\u00ed \u010do\u010dky jsou d\u016fle\u017eit\u00e9 v n\u00e1stroj\u00edch, jako jsou dalekohledy a teleskopy.<\/a><\/em><\/span>Zlep\u0161uj\u00ed jasnost a umo\u017e\u0148uj\u00ed l\u00e9pe vid\u011bt vzd\u00e1len\u00e9 objekty. V dalekohledech konk\u00e1vn\u00ed \u010do\u010dky spolupracuj\u00ed s konvexn\u00edmi, aby upravily sv\u011btlo a poskytly jasn\u00fd obraz.<\/p><p>Dalekohledy tak\u00e9 pou\u017e\u00edvaj\u00ed konk\u00e1vn\u00ed \u010do\u010dky pro ost\u0159ej\u0161\u00ed obraz. Jsou skv\u011bl\u00e9 pro pozorov\u00e1n\u00ed hv\u011bzd a v\u011bdeck\u00e9 studie. Tyto \u010do\u010dky se pou\u017e\u00edvaj\u00ed tak\u00e9 v l\u00e9ka\u0159sk\u00e9m zobrazov\u00e1n\u00ed a anal\u00fdze materi\u00e1l\u016f, co\u017e ukazuje jejich mnohostrann\u00e9 vyu\u017eit\u00ed.<\/p><h3>Kombinovan\u00e9 pou\u017eit\u00ed konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek<\/h3><h4>Slo\u017een\u00e9 \u010do\u010dky v optick\u00fdch p\u0159\u00edstroj\u00edch<\/h4><p>N\u011bkter\u00e9 n\u00e1stroje kombinuj\u00ed konvexn\u00ed a konk\u00e1vn\u00ed \u010do\u010dky pro lep\u0161\u00ed v\u00fdkon. Tato kombinace vytv\u00e1\u0159\u00ed syst\u00e9my slo\u017een\u00fdch \u010do\u010dek, kter\u00e9 vyva\u017euj\u00ed siln\u00e9 str\u00e1nky obou typ\u016f.<\/p><div class=\"qc-default-table-wrapper\"><table><colgroup> <col \/> <col \/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">V\u00fdkonnostn\u00ed aspekt<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">Popis<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Zlep\u0161en\u00ed plochosti obrazu<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Slo\u017een\u00e9 \u010do\u010dky zaji\u0161\u0165uj\u00ed jasn\u00fd a rovnom\u011brn\u00fd obraz sn\u00ed\u017een\u00edm zkreslen\u00ed.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Roz\u0161\u00ed\u0159en\u00ed chromatick\u00e9 korekce<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/evidentscientific.com\/en\/learn\/white-papers\/xline-high-performance-objectives\" target=\"_blank\" rel=\"nofollow noopener\">Kombinace \u010do\u010dek pom\u00e1h\u00e1 l\u00e9pe zaost\u0159it r\u016fzn\u00e9 barvy sv\u011btla<\/a><\/em><\/span>, \u010d\u00edm\u017e se zlep\u0161uje p\u0159ehlednost.<\/p><\/td><\/tr><\/tbody><\/table><\/div><p>Slo\u017een\u00e9 \u010do\u010dky se pou\u017e\u00edvaj\u00ed v mikroskopech, fotoapar\u00e1tech a dalekohledech. \u0158e\u0161\u00ed optick\u00e9 probl\u00e9my, a proto jsou kl\u00ed\u010dov\u00e9 pro v\u011bdu a pr\u016fmysl.<\/p><h4>Pokro\u010dil\u00e9 technologick\u00e9 aplikace<\/h4><p>Kombinace konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek je v modern\u00edch technologi\u00edch u\u017eite\u010dn\u00e1. Tyto \u010do\u010dky se pou\u017e\u00edvaj\u00ed v laserov\u00fdch syst\u00e9mech, headsetech pro virtu\u00e1ln\u00ed realitu a vysoce kvalitn\u00edch zobrazovac\u00edch n\u00e1stroj\u00edch. Nap\u0159\u00edklad v laserech slo\u017een\u00e9 \u010do\u010dky p\u0159esn\u011b zaost\u0159uj\u00ed sv\u011btlo pro \u0159ez\u00e1n\u00ed nebo grav\u00edrov\u00e1n\u00ed.<\/p><p>Headsety pro virtu\u00e1ln\u00ed realitu pou\u017e\u00edvaj\u00ed tyto \u010do\u010dky k \u00faprav\u011b sv\u011btla a zlep\u0161en\u00ed kvality obrazu. T\u00fdmov\u00e1 pr\u00e1ce konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek poh\u00e1n\u00ed inovace v oblastech, jako je z\u00e1bava a medic\u00edna, a dokazuje jejich hodnotu v dne\u0161n\u00edm sv\u011bt\u011b.<\/p><h2>Typy konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek<\/h2><p>\u010co\u010dky maj\u00ed r\u016fzn\u00e9 tvary pro specifick\u00e9 \u00fa\u010dely. Znalost typ\u016f konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek v\u00e1m pom\u016f\u017ee vybrat tu spr\u00e1vnou. Poj\u010fme se pod\u00edvat na jejich podtypy a pou\u017eit\u00ed.<\/p><h3>Podtypy konvexn\u00edch \u010do\u010dek<\/h3><p>Konvexn\u00ed \u010do\u010dky sv\u00e1d\u011bj\u00ed sv\u011bteln\u00e9 paprsky dohromady. Existuj\u00ed p\u0159ev\u00e1\u017en\u011b dva typy: plankonvexn\u00ed a bikonvexn\u00ed.<\/p><h4>Planokonvexn\u00ed \u010do\u010dky<\/h4><p>Planokonvexn\u00ed \u010do\u010dka m\u00e1 jednu plochou a jednu zak\u0159ivenou stranu. Tento tvar je skv\u011bl\u00fd pro zaost\u0159ov\u00e1n\u00ed sv\u011btla ze vzd\u00e1len\u00fdch objekt\u016f. Teleskopy pou\u017e\u00edvaj\u00ed tyto \u010do\u010dky ke sb\u011bru sv\u011btla z hv\u011bzd a planet. Pou\u017e\u00edvaj\u00ed se tak\u00e9 v laserech k p\u0159esn\u00e9mu zaost\u0159ov\u00e1n\u00ed sv\u011btla.<\/p><h4>Bikonvexn\u00ed \u010do\u010dky<\/h4><p>Bikonvexn\u00ed \u010do\u010dka m\u00e1 dv\u011b zak\u0159iven\u00e9 strany. Tato konstrukce se dob\u0159e hod\u00ed pro zaost\u0159ov\u00e1n\u00ed sv\u011btla z bl\u00edzk\u00fdch objekt\u016f. Tyto \u010do\u010dky se nach\u00e1zej\u00ed v lup\u00e1ch a mikroskopech. Pom\u00e1haj\u00ed zv\u011bt\u0161it a zp\u0159ehlednit mal\u00e9 detaily. Jejich schopnost zaost\u0159ovat sv\u011btlo je \u010din\u00ed u\u017eite\u010dn\u00fdmi v mnoha optick\u00fdch n\u00e1stroj\u00edch.<\/p><p>Zde je jednoduch\u00e9 srovn\u00e1n\u00ed t\u011bchto konvexn\u00edch \u010do\u010dek:<\/p><div class=\"qc-default-table-wrapper\"><table><colgroup> <col \/> <col \/> <col \/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">Typ objektivu<\/p><\/th><th style=\"text-align: left;\" colspan=\"1\" rowspan=\"1\"><p>Tvar povrchu<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">Nejlep\u0161\u00ed pou\u017eit\u00ed<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Planokonvexn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Jeden ploch\u00fd, jeden zak\u0159iven\u00fd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vzd\u00e1len\u00e9 objekty<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Bikonvexn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ob\u011b strany zak\u0159iven\u00e9<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Objekty v bl\u00edzkosti<\/p><\/td><\/tr><\/tbody><\/table><\/div><h3>Podtypy konk\u00e1vn\u00edch \u010do\u010dek<\/h3><p>Konk\u00e1vn\u00ed \u010do\u010dky rozptyluj\u00ed sv\u011bteln\u00e9 paprsky. D\u011bl\u00ed se tak\u00e9 na dva hlavn\u00ed typy: plankonk\u00e1vn\u00ed a bikonk\u00e1vn\u00ed.<\/p><h4>Planokonk\u00e1vn\u00ed \u010do\u010dky<\/h4><p>Planokonk\u00e1vn\u00ed \u010do\u010dka m\u00e1 jednu plochou stranu a jednu stranu zak\u0159ivenou dovnit\u0159. Tato konstrukce rozptyluje sv\u011btlo sm\u011brem ven, co\u017e ji \u010din\u00ed u\u017eite\u010dnou v laserech pro roz\u0161\u00ed\u0159en\u00ed paprsku. Tak\u00e9 sni\u017euje zkreslen\u00ed obrazu v optick\u00fdch za\u0159\u00edzen\u00edch.<\/p><h4>Bikonk\u00e1vn\u00ed \u010do\u010dky<\/h4><p>Bikonk\u00e1vn\u00ed \u010do\u010dka m\u00e1 dv\u011b strany zak\u0159iven\u00e9 dovnit\u0159. D\u00edky tomuto tvaru l\u00e9pe rozptyluje sv\u011bteln\u00e9 paprsky. Pou\u017e\u00edv\u00e1 se k n\u00e1prav\u011b kr\u00e1tkozrakosti a k vytvo\u0159en\u00ed \u0161irok\u00e9ho pohledu v kuk\u00e1tk\u00e1ch. Bikonk\u00e1vn\u00ed \u010do\u010dky jsou tak\u00e9 u\u017eite\u010dn\u00e9 ve v\u011bdeck\u00fdch n\u00e1stroj\u00edch pro \u0159\u00edzen\u00ed sv\u011bteln\u00fdch drah.<\/p><p>Sezn\u00e1men\u00edm se s t\u011bmito typy \u010do\u010dek m\u016f\u017eete vid\u011bt, jak jejich tvary a pou\u017eit\u00ed spl\u0148uj\u00ed r\u016fzn\u00e9 optick\u00e9 pot\u0159eby.<\/p><h2>Jak vybrat spr\u00e1vn\u00fd objektiv<\/h2><h3>Na co myslet p\u0159i v\u00fdb\u011bru objektivu<\/h3><h4>Pro\u010d to pot\u0159ebujete (nap\u0159. br\u00fdle, zv\u011bt\u0161ovac\u00ed p\u0159edm\u011bty)<\/h4><p>D\u016fvod, pro\u010d pot\u0159ebujete \u010do\u010dky, ur\u010duje jejich typ a pou\u017eit\u00ed. U br\u00fdl\u00ed si ujasn\u011bte, zda jste kr\u00e1tkozrak\u00ed nebo dalekozrak\u00ed. <strong>Konk\u00e1vn\u00ed \u010do\u010dky<\/strong> pom\u00e1haj\u00ed kr\u00e1tkozrak\u00fdm lidem \u0161\u00ed\u0159en\u00edm sv\u011btla sm\u011brem ven. <strong>Konvexn\u00ed \u010do\u010dky<\/strong> pomozte dalekozrak\u00fdm lidem zaost\u0159en\u00edm sv\u011btla dovnit\u0159. Pokud pot\u0159ebujete, aby v\u011bci vypadaly v\u011bt\u0161\u00ed, <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/chineselens.com\/cs\/understanding-convex-lenses\/\" target=\"_blank\" rel=\"nofollow noopener\">konvexn\u00ed \u010do\u010dky jsou nejlep\u0161\u00ed<\/a><\/em><\/span>Zv\u011bt\u0161uj\u00ed objekty a zp\u0159ehled\u0148uj\u00ed je.<\/p><p>Zamyslete se nad t\u00edm, jak objektiv pracuje se sv\u011btlem pro v\u00e1\u0161 \u00fakol. Nap\u0159\u00edklad:<\/p><ul><li><p><strong>Mal\u00e9 detaily<\/strong>Konvexn\u00ed \u010do\u010dky v\u00e1m pomohou l\u00e9pe vid\u011bt drobn\u00e9 p\u0159edm\u011bty nebo text.<\/p><\/li><li><p><strong>\u0160irok\u00e9 v\u00fdhledy<\/strong>Konk\u00e1vn\u00ed \u010do\u010dky jsou skv\u011bl\u00e9 pro kuk\u00e1tka nebo n\u00e1stroje se \u0161irok\u00fdm zorn\u00fdm polem.<\/p><\/li><li><p><strong>Speci\u00e1ln\u00ed \u00fakoly<\/strong>Br\u00fdlov\u00e9 \u010do\u010dky pro \u0159\u00edzen\u00ed v noci nebo pr\u00e1ci s po\u010d\u00edta\u010dem sni\u017euj\u00ed nam\u00e1h\u00e1n\u00ed o\u010d\u00ed.<\/p><\/li><\/ul><h4>Jak\u00fd typ obr\u00e1zku chcete (nap\u0159. velikost, sm\u011br)<\/h4><p>Typ obrazu, kter\u00fd pot\u0159ebujete, ovliv\u0148uje v\u00fdb\u011br objektivu. Konvexn\u00ed \u010do\u010dky mohou vytv\u00e1\u0159et skute\u010dn\u00e9, obr\u00e1cen\u00e9 obrazy nebo virtu\u00e1ln\u00ed, v\u011bt\u0161\u00ed obrazy. Konk\u00e1vn\u00ed \u010do\u010dky v\u017edy vytv\u00e1\u0159ej\u00ed virtu\u00e1ln\u00ed, svisl\u00e9 a men\u0161\u00ed obrazy.<\/p><p>Zde je to, co je t\u0159eba zv\u00e1\u017eit:<\/p><ul><li><p><strong>Velikost obr\u00e1zku<\/strong>Pro v\u011bt\u0161\u00ed sn\u00edmky pou\u017e\u00edvejte konvexn\u00ed \u010do\u010dky. Pro men\u0161\u00ed sn\u00edmky jsou lep\u0161\u00ed konk\u00e1vn\u00ed \u010do\u010dky.<\/p><\/li><li><p><strong>Sm\u011br obrazu<\/strong>Konk\u00e1vn\u00ed \u010do\u010dky poskytuj\u00ed vzp\u0159\u00edmen\u00fd obraz. Konvexn\u00ed \u010do\u010dky jsou vhodn\u00e9 pro obrazy vzh\u016fru nohama, nap\u0159\u00edklad v projektorech.<\/p><\/li><li><p><strong>Ulo\u017een\u00ed objektivu<\/strong>Tvar o\u010d\u00ed m\u016f\u017ee ovlivnit fungov\u00e1n\u00ed a spr\u00e1vn\u00e9 nasazen\u00ed \u010do\u010dek.<\/p><\/li><\/ul><h3>Tipy pro specifick\u00e9 pot\u0159eby<\/h3><h4>V\u00fdb\u011br \u010do\u010dek do br\u00fdl\u00ed<\/h4><p>V\u00fdb\u011br br\u00fdl\u00ed je v\u00edc ne\u017e jen o \u00faprav\u011b zraku. Zamyslete se nad stylem obrou\u010dek a vlastnostmi \u010do\u010dek. <a href=\"https:\/\/reviewob.com\/how-long-does-it-take-most-consumers-to-choose-eyeglasses\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"text-decoration: underline;\"><em>Obrou\u010dky by m\u011bly odpov\u00eddat tvaru obli\u010deje a t\u00f3nu pleti<\/em><\/span>.<\/a> Nap\u0159\u00edklad:<\/p><ul><li><p><strong>Tvary obli\u010deje<\/strong>\u010ctvercov\u00e9 obrou\u010dky slu\u0161\u00ed kulat\u00e9mu obli\u010deji a kulat\u00e9 obrou\u010dky se hod\u00ed k hranat\u00e9mu obli\u010deji.<\/p><\/li><li><p><strong>T\u00f3ny pleti<\/strong>Tepl\u00e9 t\u00f3ny vypadaj\u00ed dob\u0159e se zlat\u00fdmi nebo hn\u011bd\u00fdmi obrou\u010dkami. Studen\u00e9 t\u00f3ny se hod\u00ed ke st\u0159\u00edbrn\u00fdm nebo sv\u011btl\u00fdm barv\u00e1m.<\/p><\/li><\/ul><p>Balen\u00ed \u010do\u010dek m\u016f\u017ee usnadnit v\u00fdb\u011br. \u010casto obsahuje dopl\u0148ky, jako jsou antireflexn\u00ed vrstvy nebo lehk\u00e9 materi\u00e1ly pro v\u011bt\u0161\u00ed pohodl\u00ed.<\/p><h4>V\u00fdb\u011br \u010do\u010dek pro optick\u00e9 n\u00e1stroje<\/h4><p>N\u00e1stroje jako fotoapar\u00e1ty, mikroskopy a dalekohledy pot\u0159ebuj\u00ed spr\u00e1vn\u00e9 \u010do\u010dky. Konvexn\u00ed \u010do\u010dky zaost\u0159uj\u00ed sv\u011btlo a vytv\u00e1\u0159ej\u00ed jasn\u00fd obraz. Konk\u00e1vn\u00ed \u010do\u010dky sv\u011btlo rozptyluj\u00ed a sni\u017euj\u00ed rozmaz\u00e1n\u00ed.<\/p><p>P\u0159i v\u00fdb\u011bru \u010do\u010dek pro n\u00e1stroje berte v \u00favahu:<\/p><ul><li><p><strong>Zv\u011bt\u0161en\u00ed<\/strong>Konvexn\u00ed \u010do\u010dky jsou nejlep\u0161\u00ed pro detailn\u00ed z\u00e1b\u011bry. Konk\u00e1vn\u00ed \u010do\u010dky funguj\u00ed pro \u0161irok\u00e9 z\u00e1b\u011bry.<\/p><\/li><li><p><strong>Jasn\u00e9 obr\u00e1zky<\/strong>Kombinace konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek zlep\u0161uje kvalitu obrazu.<\/p><\/li><li><p><strong>Ulo\u017een\u00ed n\u00e1stroje<\/strong>Pro dosa\u017een\u00ed nejlep\u0161\u00edch v\u00fdsledk\u016f se ujist\u011bte, \u017ee objektiv odpov\u00edd\u00e1 va\u0161emu n\u00e1stroji.<\/p><\/li><\/ul><p>D\u00edky znalosti toho, co pot\u0159ebujete a jak \u010do\u010dky funguj\u00ed, si m\u016f\u017eete vybrat ty spr\u00e1vn\u00e9 pro lep\u0161\u00ed vid\u011bn\u00ed nebo vylep\u0161en\u00e9 pom\u016fcky.<\/p><div class=\"qc-divider-wrapper\"><div class=\"qc-divider\">\u00a0<\/div><\/div><p>Znalost rozd\u00edl\u016f mezi konvexn\u00edmi a konk\u00e1vn\u00edmi \u010do\u010dkami v\u00e1m pom\u016f\u017ee pochopit jejich v\u00fdznam v optice. Konvexn\u00ed \u010do\u010dky spojuj\u00ed sv\u011btlo a vytv\u00e1\u0159ej\u00ed skute\u010dn\u00e9 nebo virtu\u00e1ln\u00ed obrazy. Konk\u00e1vn\u00ed \u010do\u010dky sv\u011btlo rozptyluj\u00ed a vytv\u00e1\u0159ej\u00ed virtu\u00e1ln\u00ed, svisl\u00e9 obrazy. Tyto \u010do\u010dky se pou\u017e\u00edvaj\u00ed k fixaci zraku a ke zlep\u0161en\u00ed optick\u00fdch n\u00e1stroj\u016f.<\/p><p>Zde je <span style=\"text-decoration: underline;\"><em><a href=\"https:\/\/americanboard.org\/Subjects\/general-science\/optics\/\" target=\"_blank\" rel=\"nofollow noopener\">jednoduch\u00e1 tabulka jejich vlastnost\u00ed a pou\u017eit\u00ed<\/a><\/em><\/span>:<\/p><div class=\"qc-default-table-wrapper\"><table><colgroup> <col \/> <col \/> <col \/> <col \/> <col \/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">Typ objektivu<\/p><\/th><th style=\"text-align: left;\" colspan=\"1\" rowspan=\"1\"><p>Typ obr\u00e1zku<\/p><\/th><th style=\"text-align: left;\" colspan=\"1\" rowspan=\"1\"><p>Sm\u011br obrazu<\/p><\/th><th style=\"text-align: left;\" colspan=\"1\" rowspan=\"1\"><p>Velikost obr\u00e1zku<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p style=\"text-align: left;\">B\u011b\u017en\u00e9 pou\u017eit\u00ed<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Konvexn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nemovit\u00fd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vzh\u016fru nohama<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Men\u0161\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kamera, Lidsk\u00e9 oko<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Konvexn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nemovit\u00fd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vzh\u016fru nohama<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Stejn\u00e1 velikost<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kop\u00edrka (100%)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Konvexn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nemovit\u00fd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Vzh\u016fru nohama<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u011bt\u0161\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Filmov\u00fd projektor<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Konvexn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u017d\u00e1dn\u00fd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u017d\u00e1dn\u00fd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u017d\u00e1dn\u00fd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Reflektory<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Konvexn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Virtu\u00e1ln\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Sloupek<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>V\u011bt\u0161\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Br\u00fdle na \u010dten\u00ed<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Konk\u00e1vn\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Virtu\u00e1ln\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Sloupek<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Men\u0161\u00ed<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Br\u00fdle pro vid\u011bn\u00ed do d\u00e1lky<\/p><\/td><\/tr><\/tbody><\/table><\/div><p>V\u00fdb\u011br spr\u00e1vn\u00fdch \u010do\u010dek z\u00e1vis\u00ed na tom, co pot\u0159ebujete. A\u0165 u\u017e jde o zv\u011bt\u0161en\u00ed, korekci zraku nebo vylep\u0161en\u00ed pom\u016fcek, pochopen\u00ed t\u011bchto rozd\u00edl\u016f v\u00e1m pom\u016f\u017ee moud\u0159e si vybrat.<\/p><h2>FAQ<\/h2><h3>Jak\u00fd je hlavn\u00ed rozd\u00edl mezi konvexn\u00edmi a konk\u00e1vn\u00edmi \u010do\u010dkami?<\/h3><p>Konvexn\u00ed \u010do\u010dky shroma\u017e\u010fuj\u00ed sv\u011bteln\u00e9 paprsky v jednom bod\u011b. Konk\u00e1vn\u00ed \u010do\u010dky rozptyluj\u00ed sv\u011bteln\u00e9 paprsky sm\u011brem ven. Konvexn\u00ed \u010do\u010dky jsou skv\u011bl\u00e9 pro zv\u011bt\u0161ov\u00e1n\u00ed a zaost\u0159ov\u00e1n\u00ed. Konk\u00e1vn\u00ed \u010do\u010dky funguj\u00ed dob\u0159e pro \u0161irok\u00e9 z\u00e1b\u011bry a rozptyl sv\u011btla.<\/p><div class=\"qc-divider-wrapper\"><div class=\"qc-divider\">\u00a0<\/div><\/div><h3>Jak ovliv\u0148uj\u00ed konvexn\u00ed a konk\u00e1vn\u00ed \u010do\u010dky velikost obrazu?<\/h3><p>Konvexn\u00ed \u010do\u010dky mohou zv\u011bt\u0161ovat nebo zmen\u0161ovat obrazy. To z\u00e1le\u017e\u00ed na tom, jak daleko je objekt od \u010do\u010dky. Konk\u00e1vn\u00ed \u010do\u010dky v\u017edy vytv\u00e1\u0159ej\u00ed men\u0161\u00ed obrazy. Jsou u\u017eite\u010dn\u00e9 pro pozorov\u00e1n\u00ed pr\u016fzor\u016f nebo pro redukci rozmazan\u00fdch okraj\u016f.<\/p><div class=\"qc-divider-wrapper\"><div class=\"qc-divider\">\u00a0<\/div><\/div><h3>Kter\u00e9 \u010do\u010dky byste m\u011bli pou\u017e\u00edt pro dalekozrakost?<\/h3><p>Konvexn\u00ed \u010do\u010dka je nejlep\u0161\u00ed pro dalekozrakost. Oh\u00fdb\u00e1 sv\u011btlo dovnit\u0159, aby pomohla va\u0161im o\u010d\u00edm zaost\u0159it na bl\u00edzk\u00e9 p\u0159edm\u011bty. To usnad\u0148uje \u010dten\u00ed a dal\u0161\u00ed detailn\u00ed \u00fakony.<\/p><div class=\"qc-divider-wrapper\"><div class=\"qc-divider\">\u00a0<\/div><\/div><h3>Mohou konk\u00e1vn\u00ed \u010do\u010dky vytv\u00e1\u0159et skute\u010dn\u00e9 obrazy?<\/h3><p>Ne, konk\u00e1vn\u00ed \u010do\u010dky nemohou vytv\u00e1\u0159et skute\u010dn\u00e9 obrazy. Vytv\u00e1\u0159ej\u00ed pouze virtu\u00e1ln\u00ed obrazy, kter\u00e9 jsou svisl\u00e9 a men\u0161\u00ed. Tyto obrazy nelze zobrazit na obrazovce.<\/p><div class=\"qc-divider-wrapper\"><div class=\"qc-divider\">\u00a0<\/div><\/div><h3>Pro\u010d se v lup\u00e1ch pou\u017e\u00edvaj\u00ed konvexn\u00ed \u010do\u010dky?<\/h3><p>Konvexn\u00ed \u010do\u010dky l\u00e1mou sv\u011btlo, aby objekty vypadaly v\u011bt\u0161\u00ed. Vytv\u00e1\u0159ej\u00ed virtu\u00e1ln\u00ed obraz, kter\u00fd v\u00e1m pom\u016f\u017ee jasn\u011b vid\u011bt mal\u00e9 detaily. Proto jsou ide\u00e1ln\u00ed pro lupy.<\/p><div class=\"qc-divider-wrapper\"><div class=\"qc-divider\">\u00a0<\/div><\/div><h3>Jak spolupracuj\u00ed konk\u00e1vn\u00ed a konvexn\u00ed \u010do\u010dky v optick\u00fdch za\u0159\u00edzen\u00edch?<\/h3><p>Za\u0159\u00edzen\u00ed jako mikroskopy a dalekohledy pou\u017e\u00edvaj\u00ed oba typy \u010do\u010dek. Konvexn\u00ed \u010do\u010dky zaost\u0159uj\u00ed sv\u011btlo, zat\u00edmco konk\u00e1vn\u00ed \u010do\u010dky sni\u017euj\u00ed rozmaz\u00e1n\u00ed. Spole\u010dn\u011b vytv\u00e1\u0159ej\u00ed ost\u0159ej\u0161\u00ed a jasn\u011bj\u0161\u00ed obraz.<\/p><div class=\"qc-divider-wrapper\"><div class=\"qc-divider\">\u00a0<\/div><\/div><h3>Jak\u00fd typ \u010do\u010dky se pou\u017e\u00edv\u00e1 v pr\u016fzorech?<\/h3><p>Kuk\u00e1tka pou\u017e\u00edvaj\u00ed konk\u00e1vn\u00ed \u010do\u010dky. Tyto \u010do\u010dky rozptyluj\u00ed sv\u011btlo, tak\u017ee vid\u00edte do \u0161irok\u00e9ho okol\u00ed. To v\u00e1m pom\u016f\u017ee kontrolovat, kdo je za va\u0161imi dve\u0159mi.<\/p><div class=\"qc-divider-wrapper\"><div class=\"qc-divider\">\u00a0<\/div><\/div><h3>Jak si zapamatujete tvary konvexn\u00edch a konk\u00e1vn\u00edch \u010do\u010dek?<\/h3><p>Konk\u00e1tn\u00ed \u010do\u010dka \u201evystupuje\u201c jako m\u00ed\u010dek. Konk\u00e1vn\u00ed \u010do\u010dka \u201ezakukluje\u201c jako miska. Tato trik ji \u010din\u00ed snadn\u00e9 zapamatovat si jejich tvary a pou\u017eit\u00ed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Konvexn\u00ed \u010do\u010dky sb\u00edhaj\u00ed sv\u011btlo pro zv\u011bt\u0161en\u00ed a dalekozrakost, zat\u00edmco konk\u00e1vn\u00ed \u010do\u010dky rozptyluj\u00ed sv\u011btlo pro kr\u00e1tkozrakost a \u0161irok\u00fd z\u00e1b\u011br. Seznamte se s jejich vyu\u017eit\u00edm.<\/p>","protected":false},"author":1,"featured_media":37934,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Convex Lens vs Concave Lens","_seopress_titles_desc":"Convex lenses converge light for magnification and farsightedness, while concave lenses diverge light for nearsightedness and wide views. 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