Light absorber and optical equipment

Details Light absorber and optical equipment Light absorber and optical equipment

1997-09-22

2000-06-20

Spyrou, Cassandra

Optical: systems and elements

Glare or unwanted light reduction

With absorption means

359585, 359890, G02B 2700

Patent

active

060769327

ABSTRACT:
This invention provides a light absorber which can be used for optical equipment like optical-disk equipment and a liquid crystal display. The light absorber has a layered structure including a light absorbing layer and a transparent layer. The light absorbing layer absorbs a reflected light from the inside of the absorber as well as incident light into the absorber while the transparent layer helps attenuate the reflected light by interference of light. One of the light absorbing layers which is thicker than others may work as a shading layer for the incident light.

REFERENCES:
patent: 3698928 (1972-10-01), Blome
patent: 4101200 (1978-07-01), Daxinger
patent: 4166148 (1979-08-01), Sakurai
patent: 5179469 (1993-01-01), Hall et al.
patent: 5413864 (1995-05-01), Miyazaki et al.
patent: 5521759 (1996-05-01), Dobrowolski et al.
patent: 5691044 (1997-11-01), Oyama et al.
Communication from European Patent Office and attached Search Report, Jul. 7, 1999.

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