Views: 0 Author: Site Editor Publish Time: 2020-06-21 Origin: Site
The plano-concave lens diverges the parallel light outward, the focal length of the plano-concave lens is negative, and the spherical aberration is also negative.
Plano-concave lens diverges parallel light outwards. The focal length of the plano-concave lens is negative and the spherical aberration is also negative. It can be used to correct the phase, spherical, coma, and distortion of other lenses. Similar to plano-concave mirrors, the side faces generally face the far object surface or infinity. The plano-concave lenses produced by Taixing Hechen Crystal Technology Co., Ltd. are usually made of sapphire, and their antireflection coating is aimed at the wavelength range of 400-700 nanometers. UV quartz is also used as the substrate for processing. When UV quartz is used as the substrate, it has a good transmittance in the ultraviolet region and a low coefficient of thermal expansion. It can be coated with a UV AR film for use under special circumstances.
