Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1996-04-26
1998-03-10
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
372 38, 358475, 250234, G03G 15043
Patent
active
057264376
ABSTRACT:
A light intensity control device includes light intensity balancing means for balancing the light intensities of the laser beams from the light emitting elements of the laser light source, and simultaneous operating means for simultaneously operating the light emitting elements of the laser light source, wherein the sum of the light intensities of the laser beams from the light emitting elements simultaneously operated by the simultaneous operating means is detected by single detecting means at one time, and is controlled according to the detection output from the detecting means. Accordingly, it is possible to reduce the time required to perform the control of light intensities of laser beams from semiconductor laser elements when the number of the laser beams is increased, thereby more greatly exhibiting the effect of high-speed operation obtained by the increase in number of the laser beams.
REFERENCES:
patent: 5268916 (1993-12-01), Slawson et al.
patent: 5309461 (1994-05-01), Call et al.
Ashikaga Hideaki
Ito Masao
Fuji 'Xerox Co., Ltd.
Lee John R.
Westin Edward P.
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