OPTICAL DEVICE, CONTROL METHOD THEREOF, LASER MODULE, LASER APPARATUS, CONTROL UNIT THEREOF, AND CONTROL METHOD OF LASER APPARATUS

Japanese Patent JP2006210826

A

To provide an optical device for determining whether the wavelength of transmission light has changed, and to provide a method for controlling the optical device, to provide a laser module, to provide a laser apparatus, to provide a control unit of the laser apparatus, and to provide a method for controlling the laser apparatus.

The optical device 200 comprises a wavelength optic 202 that has transmission properties to a prescribed wavelength and transmits incident light; a first light detection means 203 for detecting the intensity of transmission light through the wavelength optic 202; a second light detection means 204 for detecting the intensity of reflection light reflected by the wavelength optic 202; and a determining means 205 for determining that the relative relationship between the transmission wavelength of the wavelength optic 202 and the wavelength of incident light has changed, when the increase/decrease in light intensity detected by the first light detection means 203 and that in light intensity detected by the second light detection means 204 are opposite.

AZUMA TOSHIO
YAMAUCHI YASUYUKI
LE TAILLANDIER DE GABORY EMMAN
TANAKA HIROKAZU
WATANABE JUNJI

JP2005023944A

August 10, 2006

January 31, 2005

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EUDYNA DEVICES INC

H01S5/022

JP2001007438A	2001-01-12
JPH04157780A	1992-05-29
JP2003133629A	2003-05-09
JPH09102645A	1997-04-15

WO2003005512A2

2003-01-16

Shuhei Katayama
Toshiyuki Hatta

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