Evaporation of blooming layers onto optical substrates

Details Evaporation of blooming layers onto optical substrates Evaporation of blooming layers onto optical substrates

1981-08-27

1984-11-27

Newsome, John H.

Coating processes

Electrical product produced

Welding electrode

427164, 427 42, B05D 506

Patent

active

044851243

ABSTRACT:
Optical substrates are coated with blooming layers. The substrate is placed into a vacuum vessel, the vessel is evacuated and the substrate is subjected to infrared radiation before and during the evaporation process. The substrate can be a plastic material and is preferably polydiethylene-glycol-diallyl-carbonate. Preferably initially a thin layer of high-refractive index silicon monoxide and then a second thicker, lower-refractive index silica are deposited. The resulting optical articles such as eye-glasses and watch glasses have excellent properties.

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