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
Stats
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Apr 24, 2012
Issued date -
Dec 31, 2007
filing date -
12/006,428
serial no -
In Force
status
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Abstract
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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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,737,119 Thermal imaging device | 12 | 1995 | |
| 6,174,061 Compact electro-optical sensor assembly having single aperture for multiple detectors | 9 | 1998 | |
| 6,122,919 Sensor/cooling system with cold finger having recessed end | 9 | 1999 | |
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| 6,133,569 Thermal infrared camera | 20 | 1998 | |
| 6,661,498 Projection exposure apparatus and method employing rectilinear aperture stops for use with periodic mask patterns | 7 | 2000 | |
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| 7,157,706 Cryogenically cooled adjustable apertures for infrared cameras | 6 | 2003 | |
| 7,427,758 Cryogenically cooled adjustable apertures for infra-red cameras | 3 | 2005 | |
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| 4,797,700 Diaphragm device | 15 | 1986 | |
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| 6,414,708 Video system for three dimensional imaging and photogrammetry | 10 | 1998 | |
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| 4,904,055 Variable aperture formed by linearly movable elements | 2 | 1988 | |
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| 6,707,044 Infrared camera system | 9 | 2001 | |
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| 4,583,814 Infra-red optical systems | 10 | 1984 | |
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| 6,806,471 Flame detection device | 6 | 2002 | |
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| 4,783,593 Optical system for wide angle IR imager | 32 | 1985 | |
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| 6,249,374 Wide field of view infrared zoom lens assembly having a constant F/number | 8 | 1997 | |
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| 5,371,369 Conformal cold baffle for optical imaging systems | 10 | 1993 | |
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| 5,966,945 Universal focal plane dewar assembly | 8 | 1998 | |
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