Light transmitting and dispersing filter having low reflectance

Details Light transmitting and dispersing filter having low reflectance Light transmitting and dispersing filter having low reflectance

1993-09-03

1996-10-08

Nguyen, Thong

Optical: systems and elements

Glare or unwanted light reduction

With absorption means

359452, 359453, 359613, G02B 2700, G02B 2160

Patent

active

055637388

ABSTRACT:
Multi-layer light filters provide optimized gain control, contrast, and ambient light rejection through the addition of optical layers to a basic refraction light filter. These additional layers allow adjustment of the gain, contrast, and ambient light rejection of light filters in a substantially independent manner, and can be combined to simultaneously optimize these optical properties.

REFERENCES:
patent: 2378252 (1945-06-01), Staehle et al.
patent: 3173332 (1965-03-01), Thompson et al.
patent: 3552822 (1971-01-01), Altman
patent: 3914024 (1975-10-01), Tanabe et al.
patent: 4023889 (1977-05-01), Eagon et al.
patent: 4190321 (1980-02-01), Dorer et al.
patent: 4519686 (1985-05-01), Seki et al.
patent: 4525029 (1985-06-01), Inoue et al.

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