CONTROLLING OUTPUT WAVELENGTH OF A LIGHT SOURCE

A light source module including: an LD element outputting a laser light; a lens receiving the laser light and outputting a focused light; an optical filter having transmission wavelength characteristics, inputting the focused light, and outputting a transmitted light and a reflected light based on t...

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Bibliographic Details
Main Author KOMIYAMA MANABU
Format Patent
LanguageEnglish
Published 25.12.2008
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:A light source module including: an LD element outputting a laser light; a lens receiving the laser light and outputting a focused light; an optical filter having transmission wavelength characteristics, inputting the focused light, and outputting a transmitted light and a reflected light based on the transmission wavelength characteristics, a light-receiving element detecting the reflected light which passes thorough the lens and generating a detection signal; and a control unit configured to control an output wavelength of the LD element based on the detection signal.
Bibliography:Application Number: US20080141431