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1. WO2020066096 - LASER LIGHT SOURCE DEVICE

Publication Number WO/2020/066096
Publication Date 02.04.2020
International Application No. PCT/JP2019/016663
International Filing Date 18.04.2019
IPC
H01S 5/022 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
02Structural details or components not essential to laser action
022Mountings; Housings
G02B 27/28 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
28for polarising
G02B 27/48 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
48Laser speckle optics
CPC
G02B 27/28
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
28for polarising
G02B 27/48
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
48Laser speckle optics; ; Speckle reduction arrangements
H01S 5/022
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
02Structural details or components not essential to laser action
022Mountings; Housings
Applicants
  • 三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP]/[JP]
Inventors
  • 木田 博 KIDA Hiroshi
Agents
  • 吉竹 英俊 YOSHITAKE Hidetoshi
  • 有田 貴弘 ARITA Takahiro
Priority Data
PCT/JP2018/03591527.09.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) LASER LIGHT SOURCE DEVICE
(FR) DISPOSITIF DE SOURCE DE LUMIÈRE LASER
(JA) レーザ光源装置
Abstract
(EN)
The purpose of the present invention is to provide a laser light source device with which it is possible to reduce generation of an interference fringe and speckles, and to reduce temperature increase due to laser oscillation. The laser light source device comprises: a base; a plurality of semiconductor laser elements which are respectively separately held on an upper surface of the base and which emit a plurality of beams with polarization directions aligned in one direction; and a polarization conversion unit which causes the polarization directions of at least some of the plurality of beams to be rotated, thereby causing a disturbance such that the polarization directions of the plurality of beams are not aligned in one direction.
(FR)
L'objectif de la présente invention est de fournir un dispositif de source de lumière laser avec lequel il est possible de réduire la génération d'une frange d'interférence et de taches, et de réduire l'augmentation de température due à l'oscillation laser. Le dispositif de source de lumière laser comprend : une base ; une pluralité d'éléments laser à semi-conducteur qui sont respectivement maintenus séparément sur une surface supérieure de la base et qui émettent une pluralité de faisceaux ayant des directions de polarisation alignées dans une direction ; et une unité de conversion de polarisation qui provoque la rotation des directions de polarisation d'au moins une partie de la pluralité de faisceaux, provoquant ainsi une perturbation telle que les directions de polarisation de la pluralité de faisceaux ne sont pas alignées dans une direction.
(JA)
干渉縞およびスペックルの発生を低減し、かつ、レーザ発振による温度上昇を低減することができるレーザ光源装置の提供を目的とする。レーザ光源装置は、ベースと、各々が個別にベースの上面に保持され、偏光方向が一方向に揃った複数のビームを出射する複数の半導体レーザ素子と、複数のビームのうち少なくとも一部のビームの偏光方向を回転させることにより、複数のビームの偏光方向が一方向に揃わないように乱す偏光変換部と、を含む。
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