DRIVING DEVICE FOR DRIVING A LIGHT EMITTING DEVICE WITH STABLE OPTICAL POWER
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United States of America Patent
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Issued Date -
Jan 29, 2015
app pub date -
Nov 6, 2013
filing date -
Jul 26, 2013
priority date (Note) -
Abandoned
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Abstract
A driving device is adapted to drive a light emitting device with stable optical power, and includes a feedback driving circuit, and a pulse wave generating circuit. The feedback driving circuit provides a driving current that is associated with a pulse-wave signal to the light emitting device, and outputs a feedback signal. The pulse wave generating circuit includes an analog-to-digital converter outputting a digital feedback signal according to the feedback signal, and a controller outputting the pulse-wave signal according to the digital feedback signal.
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