Plano-convex lens, aslo called positive lens, is used to converge incident light to a spot on the axis, at a certain distance behind the lens, which is knowed as focal length. It can form both real images and virtual images(for magnifier) on the two sides. The materials to make plano-convex lens can be BK7, Fused Cilica, sapphire and CaF2 etc., for different applications.This model are commonly applied in many devices including telescopes, collimators, magnifiers,optical transceivers, condensers and other optical display or imaging optical systems. AR/NIR or other coatings are available according to the applications.
Material-------------------Fused cilica, BK7 Grade A or equivalent optical glasses
Design Wavalength------546.1nm
Diameter Tolerance------í+0.1mm, í+0.15mm for Dia.í¦75mm
Paraxial Focus Length----í+2%
Centration----------------<3 arc minutes
Clear Aperture------------>85%
Surface Figure------------ª-/4 @632.8nm
Surface Quality-----------60-40 scratch and dig
Coatings-------------------Antireflection coatings or NIR coatings
Bevel-----------------------A slight protective bevel, such as 0.25mmí-45íp
(For different applications, there are various choices in the specifications, which must be determined according to usersí» specific requirements.)
Achromatic lens is designed to limit the effects of chromatic and spherical abberation. It is corrected to bring two wavelengths(typically red and blue) into focus in the same plane. Achromatic lenses can be doublets or triplets, with two or three individual glasses cemented together.
Material--------------------BK7 Grade A or equivalent optical glasses
Design Wavalength-------480-650nm
Diameter Tolerance-------í+0.1mm, í+0.15mm for Dia.í¦75mm
Paraxial Focus Length-----í+2% @546.1nm
Centration-----------------<3 arc minutes
Clear Aperture------------->80%
Surface Figure-------------ª-/4 @632.8nm
Surface Quality------------60-40 scratches and dig
Coatings-------------------Antireflection coatings or NIR coatings
Bevel-----------------------A slight protective bevel
(For different applications, there are various choices in the specifications, which must be determined according to users specific requirements.)
