Optical filter made of inorganic material for blue light

Details Optical filter made of inorganic material for blue light Optical filter made of inorganic material for blue light

1985-06-13

1988-05-03

Swisher, Nancy A. B.

Stock material or miscellaneous articles

Composite

Of quartz or glass

428432, 428701, B32B 522, B32B 1312

Patent

active

047419628

ABSTRACT:
This invention relates to an optical filter made of inorganic material for blue light which transfers blue light and absorbs all of the other colored lights by sticking an inorganic mixture powder pasted by mixing with screen oil on a glass substrate and firing it. The mixture includes transparent glass material powder and a combination of oxides of cobalt and aluminum. The contrast of a picture displayed on a display device can be substantially increased by reducing the reflection of incident ambient light without the reduction of brightness on account of the application of the above optical filter onto the displaying screen.

REFERENCES:
patent: 3097103 (1963-07-01), Homer et al.
patent: 4148761 (1979-04-01), Kazmierowicz
patent: 4148940 (1979-04-01), Breininger et al.
patent: 4160061 (1979-07-01), Obino et al.
patent: 4409285 (1983-10-01), Swerdlow
patent: 4521524 (1985-06-01), Yamashita
patent: 4525425 (1985-06-01), Church
Chemical Abstracts, vol. 98, No. 3, Mar. 21, 1983, p. 300, Reference No. 94502p.

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