LASER MODULE - PANASONIC IP MAN CO LTD

Title:

LASER MODULE

Document Type and Number:

WIPO Patent Application WO/2018/037663

Kind Code:

A1

Abstract:

A laser module according to the present disclosure is provided with: a laser diode which includes a plurality of emitters arranged in a first direction, and which emits laser light from each of the plurality of emitters in a light emitting plane; a first collimator lens which is provided on the light emitting plane side of the laser diode, and which has positive power in a fast axis direction; a beam twister which is positioned on the laser light emitted side of the first collimator lens, and which causes the laser light to turn through approximately 90 degrees; and an optical element which is positioned on the laser light emitted side of the beam twister, and which has a plurality of incident surfaces provided in a stepped manner. The laser module satisfies the following condition expression (1), wherein: x is the distance from an emitting plane of the beam twister to the incident surfaces of the optical element; W is the width of the incident surfaces in the first direction; λ is the wavelength of the laser light; f is the focal point distance of the first collimator lens; and w0 is the beam size of the laser light in a direction perpendicular to the first direction on the emitting plane of the emitters.

Inventors:

ICHIHASHI KOUKI

Application Number:

PCT/JP2017/021085

Publication Date:

March 01, 2018

Filing Date:

June 07, 2017

Export Citation:

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Assignee:

PANASONIC IP MAN CO LTD (JP)

International Classes:

H01S5/022; G02B13/00

Domestic Patent References:

WO2016063436A1

2016-04-28

Foreign References:

US6240116B1	2001-05-29
JP2006337594A	2006-12-14
JP2015072956A	2015-04-16
JP2011520292A	2011-07-14
JP2004252428A	2004-09-09
JP2004096092A	2004-03-25
JP2014095916A	2014-05-22

Other References: