Plano-Concave Lens

Plano-concave lens diverges the 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 a plano-convex lens, one side of the curved surface generally faces the far surface or infinity. The lenses produced by GiAi are usually made of K9 glass, and their antireflection coatings are aimed at the wavelength range of 400-700nm. It is also processed by using ultraviolet quartz as the substrate. At this time, it has a good transmittance and a low coefficient of thermal expansion in the ultraviolet region. It can be coated with an ultraviolet AR film for use in special circumstances.