Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2010-09-27
2011-10-18
Legasse, Jr., Francis M (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S339040, C250S2140AG, C257S431000
Reexamination Certificate
active
08039785
ABSTRACT:
The present invention provides an optical system having an array of light emitting semiconductor devices to performing an operation that have multiple characteristics associated with performing the operation. The array includes at least one detector located within the array to selectively monitor multiple characteristics of the light emitting semiconductor devices and is configured to generate a signal corresponding to the selected characteristic. A controller is configured to control the light emitting semiconductor devices in response to the signal from the at least one detector. At least one of the multiple characteristics may be concentrated at an area of the array and the at least one detector may be located within the array at the area of the array to selectively monitor characteristic that is concentrated at the area of the array.
REFERENCES:
patent: 4529949 (1985-07-01), de Wit et al.
patent: 6683421 (2004-01-01), Kennedy et al.
patent: 2002/0142808 (2002-10-01), Abbasi
Anderson Duwayne R.
Culter Robert G.
Olson Steven J.
Owen Mark D.
Legasse Jr. Francis M
Marger & Johnson & McCollom, P.C.
Phoseon Technology, Inc.
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