Laser light quantity control device
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United States of America Patent
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Oct 12, 1999
Grant Date -
N/A
app pub date -
Apr 15, 1997
filing date -
Apr 16, 1996
priority date (Note) -
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Abstract
A laser light quantity control device includes a semiconductor laser element having a plurality of light emitting portions and a light quantity detector for detecting light quantities of the individual light emitting portions. Currents supplied to the individual light emitting portions are controlled by a light quantity adjusting section on the basis of outputs from the light quantity detector. The light quantity adjusting section performs light quantity adjustments of the individual light emitting portions at predetermined time interval.
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