Selective interference light filter

Details Selective interference light filter Selective interference light filter

G - Physics

02

B

88/0.21

G02B 5/28 (2006.01)

Patent

CA 2008485

SELECTIVE INTERFERENCE LIGHT FILTER A b s t r a c t The light filter has a layer structure wherein layers reflect directional luminous radiation and are equidistant with the refractive index varying periodi- cally in depth. The layers are formed by exposing to monochromatic radiation at a predetermined wavelength an element made of a light-sensitive material trans- parent to said radiation and placed in front of a mir- ror only during the emission of radiation. In an opti- cal instrument a selective element may be said light filter installed in a manner allowing its turn relati- ve to luminous radiation directed thereto.

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