G - Physics – 02 – B
Patent
G - Physics
02
B
88/104, 88/96.6
G02B 17/08 (2006.01) G02B 27/17 (1980.01)
Patent
CA 1081011
CATADIOPTIC LENS SYSTEM ABSTRACT OF THE DISCLOSURE A catadioptic lens which is a mirror and lens combination has reflective diochroic filter layers deposit- ed on the mirror substrate to replace the normal metallic reflective surface of the mirror. A copying maching having a scanning mirror system uses the diochroic catadi- optic lens for improving the effective input contrasts of documents of differing colors and reflectivities. By appropriately selecting the layer number, thickness, and refractive indices deposited on the mirror substrate, a continuously variable variety of band rejection filters is provided.
271608
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