Project Description

Achromatic lens doublet

achromatic lens doublet 2
achromatic lens doublet 1
achromatic lens doublet 3
  • Reduce Spherical Aberration
  • Form smaller points of light

Achromatic doublet lenes are composed of positive lenses with low refractive index (Crown Glass) and negative lenses with high refractive index (Flint Glass) . The spherical aberration, Coma Aberration and chromatic aberration are all corrected by computer optimization design. When used to focus collimation, the surface of convex Lens or small curvature radius usually faces collimating light. When used for imaging, the CONVEX Lens must be oriented toward the object distance or the longer side of the image distance. In the design, the dispersion values and the shape of the Lens are optimized at the three wavelengths of blue (486.1 nm) , green (546.1 nm) and red (656.3 nm) , and the minimum chromatic aberration is achieved. Thus, such lenses can be used throughout the visible light region.

Achromatic doublet lenses are designed to minimize or eliminate chromatic aberration, and their achromatic designs also help minimize spherical aberration, which is much smaller than for a single lens. When used in infinite conjugate state, the spherical aberration is minimum. Achromatic Lens is suitable for Fluorescence microscope, image relay, detection or spectral applications. Achromatic Lens is made by gluing two or more components together. Achromatic Lens can form smaller points of light than a single Lens.

Product Overview

Diameter 41.5±0.1mm/41.4±0.1mm
Effective focal length 120mm
Back focal length 118.286mm
Center thickness 12±0.2mm
Radius of curvature R1=168.54mm,R2=76.25mm,R3=59.566mm
Substrate H-K9L/ZF1
Surface quality 60-40
Refractive index K9:517/640 ZF1:648/339
Diaphragm 3/0.5
Centering (arcmin) 2’
Bevel 0.5(MAX)x45° ±5°
Coating 1064nm

More Details

Achromatic lens doublet, size(mm) and coating could be customized

Model No. Diameter(mm) Focal length(mm) Coating(nm) Surface quality
DG005009 5 9 400-700 60-40
DG005014 5 14.9 400-700 60-40
DG006015 6 15.6 400-700 60-40
DG006027 6 27.3 400-700 60-40
DG008075 8 75 400-700 60-40
DG009027 9 27.4 400-700 60-40
DG009033 9 33.88 400-700 60-40
DG015046 15 46 400-700 60-40
DG015160 15 160 400-700 60-40
DG016064 16.8 64.8 400-700 60-40
DG017035 17 35 400-700 60-40
DG017071 17 71.1 400-700 60-40
DG017052 17 52 400-700 60-40
DG017064 17 64.8 400-700 60-40
DG020085 20 85 400-700 60-40
DG020100 20 100 400-700 60-40
DG015160 20 192 400-700 60-40
DG020046 24 46.54 400-700 60-40
DG025035 25 35 400-700 60-40
DG025100 25.4 100 400-700 60-40
DG026067 26.5 67.31 400-700 60-40
DG036094 36 94.68 400-700 60-40
DG038359 38.1 359.59 400-700 60-40
DG415120 41.5 120 1064 60-40
DG415150 41.5 150 1064 60-40
DG045850 45 850 400-700 60-40
DG050150 50 150 1064 60-40
DG057250 57 250 400-700 60-40

achromatic lens technical image

  • Substrate: H-K9L
  • Design Wavelength: 635nm, 520nm, 786nm, 530nm, 800nm, 655nm
  • Focal Tolerance: ±1%
  • Thickness Tolerance: ±0.2mm
  • Surface precision(PV) <0.2μm
  • Surface quality: 60-40, 40-20
  • Centering(Beam diviation): <90°
  • Coating:  Multiple antireflection coating,  A:400-700nm, B:450-650nm, C:515-550nm, D:610-660nm

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