spheric lens aspheric lens

aspheric lens advantages disadvantages-VS spherical lens

Generally speaking, the spherical lens is thicker, the imaging through the spherical lens will deform. Aspheric lens, on the other hand, is thinner and lighter, and make a more natural and realistic image.
Besides, aspheric Lens has two main advantages:

1.Calibrating spherical aberration:
By adjusting the surface constant and aspherical coefficient, aspherical lens can eliminate spherical aberration to the greatest extent. Aspherical lenses focus light to the same focal point, providing clear optical quality, Spherical lenses has spherical aberration, light convergence to different points, resulting in indistinct image.

aspheric lens vs spehrical lens

2.System advantage:
Aspherical lenses simplify the elements that need to improve the quality of optics, while improving the system stability. In an optical system, usually more than 10 spherical lenses are used for an optical system, but one or two aspherical lenses can achieve similar or better optical quality, thus reducing the size of the system and increasing the cost rate while reducing the overall cost of the system.

On the other hand, what is the disadvantage of aspheric lens?

In the past, because the surface of aspherical lens is more complex, grinding technology is used in the production, which is more difficult, but also needs more time and higher cost. Then glass molding occurs, which required very high temperatures to soften the glass, and the problem with high temperatures was that the tools would break easily, under this bad condition, Fot that, the K-PG325 super-hadronic glass molding material dissolved at low temperature at 325 °C was developed.

Aspherical lens manufacturing has four types, precision glass moulding, precision polishing, diamond turning, and molded polymer aspheres. Aspherical lenses are normally more difficult, time consuming, and expensive to produce. Molded polymer aspheres is an exception, but plastic lenses can not achieve the required precision, stability and compression is poor. Mean whild sorts of optic plastic is few.

In general, aspheric lens is the trend of lens Development in future. With optical development, aspherical Lens market demand will be growing. Contact our support team no matter what level of aspherical lens you require. We will provide you with the best commercial grade, precision grade, high precision grade of aspherical lenses.

DG Optoelectronics Co., Limited is a 20-year-old factory that customizes optical components. We are specialized in manufacturing aspheric lens, achromatic lens, fresnel lens etc. . Our equipment includes imported pendulum machine, push-pull machine, edging machine, domestic milling mill, fine grinding polishing pendulum machine, pendulum machine, large-caliber Oval Pendulum and so on. We have the expertise and production resources for custom design, prototyping, and production of optical products, and can be customized according to your project requirements. Choose DG, you will not regret!

Specifications

Spherical optical lens

Project Small and medium-sized spherical Large spherical
Material Optical glass, quartz, crystal Optical glass, quartz, crystal
Radius of curvature(mm) R3~R∞ R65~R∞
Diameter(mm) Ф3~Ф130 Ф131~Ф1000
OD TOL(mm) ±0.005~±0.05 ±0.01~±0.2
Thickness tolerance(mm) ±0.01~±0.1 ±0.01~±0.15
Surface quality 10/5~80/50 10/5~80/50
Surface precision λ/10~2.5λ λ/4~2λ@Ф200mm
Irregularity(PV) λ/20~λ/4 λ/4~λ/2@Ф200mm
Centering(Beam deviation) 10″~5’(or Δt≤0.01) 30″~5’(or Δt≤0.02)
Coating Customized Customized

Aspherical optical lens

Project Aspherical
Material optic glass, quartz, crystal, infrared material etc.
Diameter(mm) Ф10~Ф200
OD TOL(mm) ±0.01~±0.2
Thickness tolerance(mm) ±0.01~±0.1
Surface quality 10/5~80/50
Surface precision(PV) 0.1-1μm
Centering(Beam diviation) 30″~5′(Δt≤0.02)
Coating Customized

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