公开(公告)号：US20170288365A1

公开(公告)日：2017-10-05

申请号：US15511049

申请日：2015-08-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKUMA MOTOFUJI ,  TAKAYUKI YOSHIDA ,  NAOTO UEDA ,  KOUJI OOMORI

IPC: H01S5/00 ,  H01S5/40 ,  G02B19/00 ,  H01S5/022

CPC classification number: H01S5/005 ,  G02B19/0057 ,  G02B27/0961 ,  G02B27/0966 ,  H01S5/022 ,  H01S5/02288 ,  H01S5/4025 ,  H01S5/4031

Abstract: A laser module according to the present disclosure includes a laser diode, a first collimating lens, and a beam twister. The laser diode includes a plurality of emitters and emits laser light from each of the plurality of emitters through a light emission surface. The first collimating lens is provided at a first distance from the light emission surface of the laser diode and parallelizes a fast-axis-wise divergence of the laser light. The beam twister is provided at a second distance away from the first collimating lens and turns the laser light approximately 90 degrees. Each of the plurality of emitters has a width of 5 μm to 120 μm on the light emission surface. The plurality of emitters have a pitch of 295 μm to 305 μm on the light emission surface.