Coating processes – Optical element produced – Transparent base
Patent
1974-08-19
1979-04-10
Esposito, Michael F.
Coating processes
Optical element produced
Transparent base
427165, 427166, 427248R, 427255, B05D 506
Patent
active
041489390
ABSTRACT:
A method of manufacturing a transparent body, such as a pane of a window, which has a predetermined opacity gradient. A light filtering substance is evaporated in an evacuated atmosphere upwardly from an evaporator to deposit itself upon a surface which is situated over and directed toward this evaporator, the latter surface forming part of a transparent body and the light filtering substance providing for the transparent body an opacity or optical density which increases as the thickness of the deposit of the light-filtering substance on the latter surface increases. The transparent body is maintained stationary in the evacuated atmosphere over the above evaporator during deposition of the evaporated substance onto the body surface which is directed toward the latter location. A predetermined relationship is maintained between the above surface of the transparent body and the evaporator from which the light filtering substance is evaporated, this relationship being predetermined in accordance with at least one of two factors, namely the factor of the distance between points of the above surface and the evaporator and the factor of the angle of evaporation of the evaporator.
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Beriev Georgy M.
Gerasimova Elena M.
Gudimov Matvei M.
Klitsov Alexandr A.
Korjukin Alexandr V.
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