Immersed reticle

Details Immersed reticle Immersed reticle

1978-02-06

1979-12-11

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

33297, 156630, 350164, 427164, 427205, 427264, 427294, 428332, 428336, B32B 1504, B05D 506, G02B 110

Patent

active

041784049

ABSTRACT:
A low reflectance reticle immersed in optical cement between transparent strates. A copper reticle is vacuum deposited upon one transparent substrate and chemically treated to produce anti-reflectance properties. The reticle and substrate to which it is attached are then cemented with optical cement to a second transparent substrate to immerse the anti-reflectance reticle between tranparent substrates in optical cement. The immersed reticle thus formed has superior anti-reflection properties and is protected from mechanical damage by its immersed location. Immersed reticles may be installed between elements of a compound lens if desired.

REFERENCES:
patent: 121009 (1871-11-01), Schurr et al.
patent: 2932599 (1960-04-01), Dahlgren
patent: 2964436 (1960-12-01), Mikulis et al.
patent: 3107197 (1963-10-01), Stein et al.
patent: 3215574 (1965-11-01), Korb
patent: 3694945 (1972-10-01), Detiker
patent: 3999301 (1976-12-01), Hunt et al.

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