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Patent Searching and Data


Title:
LIGHT SOURCE DEVICE AND LASER LIGHT IRRADIATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/026912
Kind Code:
A1
Abstract:
This light source device is provided with: a fiber laser that emits randomly polarized laser light; a polarization beam splitter that splits the laser light emitted by the fiber laser into first split laser light and second split laser light for each polarization component; a wavelength plate that changes the polarization direction of the second split laser beam so as to be the same as the polarization direction of the first split laser beam; and a half mirror that combines the first split laser beam which was split by the polarization beam splitter and the second split laser beam for which the polarization direction was changed by the wavelength plate, and outputs the result as combined laser light.

Inventors:
OKUMA Junji (1126-1 Ichino-cho, Higashi-ku, Hamamatsu-sh, Shizuoka 58, 〒4358558, JP)
OYAIZU Masaki (1126-1 Ichino-cho, Higashi-ku, Hamamatsu-sh, Shizuoka 58, 〒4358558, JP)
Application Number:
JP2018/028683
Publication Date:
February 07, 2019
Filing Date:
July 31, 2018
Export Citation:
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Assignee:
HAMAMATSU PHOTONICS K.K. (1126-1, Ichino-cho Higashi-ku, Hamamatsu-sh, Shizuoka 58, 〒4358558, JP)
International Classes:
H01S3/067; H01S3/10
Foreign References:
JPH0385514A1991-04-10
JP2016051147A2016-04-11
JP2010204508A2010-09-16
JP2009145429A2009-07-02
JPH10170868A1998-06-26
US20170082494A12017-03-23
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (SOEI PATENT AND LAW FIRM, Marunouchi MY PLAZA 9th fl. 1-1, Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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