Burnout protection for optical sensors

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10371570
APP PUB NO 20180216992A1
SERIAL NO

15420438

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and apparatus for protecting an optical sensor is disclosed. A fixed filter having a fixed passband for light transmission is placed in front of the optical sensor. A programmable filter having a variable passband for light transmission is placed in front of the fixed filter. A controllable voltage source controls a voltage at the programmable filter that shifts the passband of the programmable filter from a first state in which the passband of the programmable filter is substantially the same as the passband of the fixed filter and a second state in which the passband of the programmable filter is different than the passband of the fixed filter.

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Patent Owner(s)

Patent OwnerAddress
RAYTHEON COMPANY870 WINTER STREET WALTHAM MA 02451-1449

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Frazier, Gary A Garland, US 83 1051
Trent, Catherine Allen, US 20 36

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