Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2011-06-07
2011-06-07
Epps, Georgia Y (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S216000
Reexamination Certificate
active
07956318
ABSTRACT:
An optical scanning device includes a light source, a light deflector for deflecting and scanning a light beam from the light source, a scanning imaging optical system for imaging the light beam via the light deflector onto a scanned face, a light beam detecting device for detecting a position of the light beam, a separation optical system provided in the light beam detecting device for separating the light beam into a plurality of separation light beams in a sub-scanning direction, a plurality of light detectors provided in the light beam detecting device to be disposed in different positions in the sub-scanning direction, and a plurality of light receiving sections provided in the light detectors, respectively, at least one light receiving section provided in the light detector being disposed such that the end portion on a side for detecting the separation light beam has a predetermined angle to the end portion of the other light detector.
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Bui-Pho Pascal M
Dickstein & Shapiro LLP
Epps Georgia Y
Ricoh & Company, Ltd.
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