Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1994-01-21
1997-09-23
Dziehzynski, Paul M.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
347236, 359196, G02B 2608
Patent
active
056710771
ABSTRACT:
A multi-beam light source device which can be used in an optical scanning device has less optical cross-talk and an improved stability in frequency response. The multi-beam light source device comprises a semiconductor laser array having a plurality of light emitting sources, a light receiving element array having a plurality of light receiving elements and a half mirror splitting a light beam emitted by the semiconductor laser array into at least two split light beams. A light converging unit is provided for converging one of the split light beams at a predetermined focal point. The light receiving element array is positioned at the focal point of the light converging unit for receiving the concentrated one of the split light beams. A controlling circuit is provided for controlling an output of the semiconductor laser array in accordance with the amount of light received by the light receiving element array. Optical cross-talk generated between the split light beams emitted by adjacent ones of the light emitting sources is suppressed by an optical cross-talk suppressing unit.
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English Language abstract of Japanese Laid-Open Application No. 59-19252.
English Language abstract of Japanese Laid-Open Application No. 1-106486.
Hino Makoto
Imakawa Susumu
Michiie Norio
Nakajima Tomohiro
Yamaguchi Katsumi
Dziehzynski Paul M.
Ricoh & Company, Ltd.
Schuberg Darren E.
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