plano-convex spherical lens

Plano-Convex Lens is widely use in optical display systems,projection optics systems, imagining optical systems, and lasermeasurement systems. It is best use where conjugatepoint--objectdistance,S or image distance S' is more than five times of theother. This lens is almost the most super form for bothcollimating a point source and focusing collimatedlight;

Plano-Concave Lens has a negative focal length and is typicallyused to cause a collimated beam to diverge as in a Galilean typebeam expander or Telescope. Because thesphericalaberration ofthePlano-Concave is negative, it can be used tobalance the aberration of other lenses.This lens is widely use inoptical display systems, projection optics systems, imagingandlasermeasureemntsysterms;

Double-Convex Lens, also named Bi-Convex Lens, is most suitablewhere the object and image are on opposite sides of the lens andthe ratio of the image and object (conjugate ratio)distancesisbetween0.2 to 5. It is used in beam expanders,. Projection opticssystems, optical viewers etc;

Double-Concave Lens, also named Bi-Concave Lens, is used todivergent light. The Bi-Concave is best used when the input beam isconverging. It is used in beam expanders,.Projectionopticssystems,optical viewers and optical charater readers etc;

Meniscus Lens can increase the NA of the system while only addingslightly to the total spherical aberrations. The Negative MeniscusLens is used to increase the focal length ofanotherlenswhilemaintaining the angular resolution of the optical assembly. Thislens shape is best used when one conjugate is relatively far fromthe lens.

We supply optical spherical lenses,include plano-convexspherical lens,plano-concave spherical lens,bi-convex sphericallens,bi-concave spherical lens,meniscus sphericallens,specialsphericallensetc..

Specification of our plano-convex spherical lenses as follow:

*Material:BK7 or other materials

*Focal length:+/-1%

*Center thickness tolerance:+/-0.01mm

*Centration:1 arc minutes

*Surface Figure:lambda/2 at 633nm on plano side

*Surface quality:40/20 stratch/dig

*Clear Apenture>90%

*Chamfer Protective:0.25mm at 45 degree typical

*Coating:optional