Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements
Reexamination Certificate
2006-05-09
2006-05-09
Martinez, Joseph P. (Department: 2873)
Optical: systems and elements
Single channel simultaneously to or from plural channels
By surface composed of lenticular elements
C359S355000, C359S619000, C359S620000, C359S621000
Reexamination Certificate
active
07042646
ABSTRACT:
An infrared device in accordance with the present invention includes an optical train for receiving incident radiation into the device, a focal plane array for receiving the incident radiation from the optical train, and an optical power limiter (OPL) that is positioned therebetween. To improve the overall optical gain for the device, the optical train initially focuses the incident radiation into an intermediate focal plane that is located within the OPL. With this configuration, however, the incident radiation begins to lose focus once it passes through the intermediate focal plane and exits the OPL. To prevent this, the infrared device includes a plurality of microlenses on the OPL surface that is facing the focal plane array. The plurality of microlenses re-focuses the incident radiation onto a final focal plane that is coincident with the focal plane array.
REFERENCES:
patent: 5351151 (1994-09-01), Levy
patent: 2004/0188617 (2004-09-01), Devitt et al.
Martinez Joseph P.
Samora Arthur K.
The United States of America as represented by the Secretary of
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