Apparatus and method of using a thermal design for...

Details Apparatus and method of using a thermal design for... Apparatus and method of using a thermal design for...

2006-09-05

2006-09-05

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

C359S003000, C359S573000, C359S001000, C385S037000

Reexamination Certificate

active

07102803

ABSTRACT:
A temperature compensated apparatus for filtering light is comprised of a holographically recorded grating defined in a photosensitive layer for providing optical filtration for light incident on the grating with a predetermined angle of incidence, and an angulation means responsive to temperature for tilting the grating relative to the angle of incidence of the light as a function of temperature of the grating so that changes in the filtration by the grating compensate for changes in temperature of the grating to maintain effective filtration of the light approximately constant.

REFERENCES:
patent: 2003/0007733 (2003-01-01), Levner et al.
patent: 2003/0048975 (2003-03-01), Lackritz et al.
patent: 2004/0246477 (2004-12-01), Moon et al.

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