Place of Origin : Changchun,China
Post Date : 24-04-2012
Expiry Date : 30-12-2017

Cylindrical Lens Is Used To Correct Astigmatism In The Eye, And, In Rangefinders, To Produce Astigmatism, Stretching A Point Of Light Into A Line.They Are Available In Either Plano Concave Or Plano Convex Configurations. Plano-Concave Cylindrical Lenses Have A Negative Focal Length And Are Used For Image Reduction Or To Spread Light. Plano-Convex Cylindrical Lenses Have A Positive Focal Length, Which Makes Them Ideal For Collecting And Focusing Light For Many Imaging Applications.