US Patent No: 8,164,813

Number of patents in Portfolio can not be more than 2000

Non-circular continuous variable aperture or shutter for infrared cameras

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Importance

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Abstract

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A continuous variable non-circular aperture for an infra-red camera is formed by a plurality of positionable metal blades arranged to define there between an aperture of non-circular shape. A rotatable actuator plate positions the blades. Actuator rotation in one direction moves the metal blades to increase the size of the non-circular aperture without changing the non-circular shape of the aperture and vice-versa when the actuator plate is rotated in the opposite direction also maintaining the non-circular aperture shape. A preferred non-circular shape for a continuous variable aperture now possible is a rectangle; another is configured as a racetrack.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
OPTO-KNOWLEDGE SYSTEMS, INC.TORRANCE, CA11

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gat, Nahum Los Angeles County, CA 23 461
Zhang, Jingyi Shandong, CN 4 8

Cited Art Landscape

Patent Info (Count) # Cites Year
 
RAYTHEON COMPANY (3)
5,737,119 Thermal imaging device 17 1995
6,174,061 Compact electro-optical sensor assembly having single aperture for multiple detectors 18 1998
6,122,919 Sensor/cooling system with cold finger having recessed end 15 1999
 
NIKON CORPORATION (2)
6,133,569 Thermal infrared camera 28 1998
6,661,498 Projection exposure apparatus and method employing rectilinear aperture stops for use with periodic mask patterns 10 2000
 
OPTO-KNOWLEDGE SYSTEMS, INC. (2)
7,157,706 Cryogenically cooled adjustable apertures for infrared cameras 12 2003
7,427,758 Cryogenically cooled adjustable apertures for infra-red cameras 9 2005
 
CANON KABUSHIKI KAISHA (1)
4,797,700 Diaphragm device 20 1986
 
DENTOP SYSTEMS LTD. (1)
6,414,708 Video system for three dimensional imaging and photogrammetry 17 1998
 
EASTMAN KODAK COMPANY (1)
4,904,055 Variable aperture formed by linearly movable elements 5 1988
 
FLIR SYSTEMS AB (1)
6,707,044 Infrared camera system 20 2001
 
GEC Avionics Limited (1)
4,583,814 Infra-red optical systems 14 1984
 
HOCHIKI CORPORATION (1)
6,806,471 Flame detection device 10 2002
 
MARTIN MARIETTA CORPORATION (1)
4,783,593 Optical system for wide angle IR imager 36 1985
 
TEXAS INSTRUMENTS INCORPORATED (1)
6,249,374 Wide field of view infrared zoom lens assembly having a constant F/number 13 1997
 
The B. F. Goodrich Company (1)
5,371,369 Conformal cold baffle for optical imaging systems 15 1993
 
Other [Check patent profile for assignment information] (1)
5,966,945 Universal focal plane dewar assembly 15 1998

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
OPTO-KNOWLEDGE SYSTEMS, INC. (3)
8,836,793 True color night vision (TCNV) fusion 0 2011
8,497,479 Adjustable-aperture infrared cameras with feedback aperture control 1 2011
8,462,418 Continuous variable aperture for forward looking infrared cameras based on adjustable blades 1 2012
 
CANON KABUSHIKI KAISHA (1)
8,465,218 Aperture unit and lens barrel including the same 0 2012

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