Non-circular continuous variable aperture or shutter for infrared cameras

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8164813
SERIAL NO

12006428

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ATTORNEY / AGENT: (SPONSORED)

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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Opto-Knowledge Systems, Inc.TORRANCE, CA10

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gat, Nahum Manhattan Beach, US 16 569
Zhang, Jingyi Torrance, US 4 35

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
5966945 Universal focal plane dewar assembly 17 1998
 
NIKON CORPORATION (2)
6133569 Thermal infrared camera 42 1998
* 6661498 Projection exposure apparatus and method employing rectilinear aperture stops for use with periodic mask patterns 10 2000
 
GEC AVIONICS LIMITED (1)
4583814 Infra-red optical systems 15 1984
 
FLIR SYSTEMS AB (1)
6707044 Infrared camera system 33 2001
 
BF Goodrich Company (1)
5371369 Conformal cold baffle for optical imaging systems 16 1993
 
Hochiki Corporation (1)
6806471 Flame detection device 12 2002
 
MARTIN MARIETTA CORPORATION (1)
4783593 Optical system for wide angle IR imager 41 1985
 
EASTMAN KODAK COMPANY (1)
* 4904055 Variable aperture formed by linearly movable elements 5 1988
 
TEXAS INSTRUMENTS INCORPORATED (1)
6249374 Wide field of view infrared zoom lens assembly having a constant F/number 13 1997
 
DENTOP SYSTEMS LTD. (1)
6414708 Video system for three dimensional imaging and photogrammetry 24 1998
 
RAYTHEON COMPANY (3)
5737119 Thermal imaging device 23 1995
6174061 Compact electro-optical sensor assembly having single aperture for multiple detectors 20 1998
6122919 Sensor/cooling system with cold finger having recessed end 17 1999
 
Opto-Knowledge Systems, Inc. (2)
7157706 Cryogenically cooled adjustable apertures for infrared cameras 15 2003
7427758 Cryogenically cooled adjustable apertures for infra-red cameras 11 2005
 
CANON KABUSHIKI KAISHA (1)
* 4797700 Diaphragm device 20 1986
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
RAYTHEON COMPANY (7)
9285653 Variable aperture mechanism for creating different aperture sizes in cameras and other imaging devices 0 2012
* 2014/0126,848 FRICTION AND WEAR REDUCTION IN CRYOGENIC MECHANISMS AND OTHER SYSTEMS 1 2013
9228645 Vacuum stable mechanism drive arm 0 2013
9488254 Method for embedded feedback control for bi-stable actuators 0 2013
9448462 Pulse width modulation control of solenoid motor 0 2014
* 9323130 Thermal control in variable aperture mechanism for cryogenic environment 0 2014
* 2014/0363,151 THERMAL CONTROL IN VARIABLE APERTURE MECHANISM FOR CRYOGENIC ENVIRONMENT 0 2014
 
CANON KABUSHIKI KAISHA (2)
* 8465218 Aperture unit and lens barrel including the same 0 2012
* 2012/0147,446 APERTURE UNIT AND LENS BARREL INCLUDING THE SAME 0 2012
 
Opto-Knowledge Systems, Inc. (3)
8836793 True color night vision (TCNV) fusion 7 2011
8497479 Adjustable-aperture infrared cameras with feedback aperture control 3 2011
8462418 Continuous variable aperture for forward looking infrared cameras based on adjustable blades 1 2012
* Cited By Examiner

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