Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1998-09-08
2000-05-30
Le, Que T.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
313524, H01J 4014
Patent
active
060693525
ABSTRACT:
An improved intensity control system for an intensified imaging system allows continuous viewing through an intensified imaging system while protecting saturated areas from the negative effects of overexposure. A micromirror array (MMA) is used in conjunction with associated optics to control the intensity incident on the image intensifier. Control circuitry determines if pixel intensity is above or below the preset threshold level. If above, the corresponding elements of the MMA array will deflect the incident light in that specific area thereby eliminating saturation of the pixels. The rest of the image is maintained for continuous viewing. A continuous feedback loop monitors the intensity levels of pixels and actively controls the incident light using the MMA.
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Castracane James
Clow, Jr. Lawrence P.
Gutin Mikhail A.
InterScience, Inc.
Le Que T.
Pyo Kevin
Simkulet Michelle D.
Yablon Jay R.
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