Title:
LIGHT SOURCE DEVICE AND OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/202692
Kind Code:
A1
Abstract:
A light source device 30 is provided with: a light source 20 that creates a plurality of mutually parallel light beams; and a plurality of cores 11 that corresponds to the plurality of light beams. Each core 11 transmits a light beam that is incident on an incident surface 11a from the light source 20 and emits the light beam from an emission surface 11b. Each core 11 has a longitudinal direction DL and a transverse direction DT perpendicular to the longitudinal direction DL; each core 11 has a refractive index distribution in which the refractive index decreases as the distance increases in the transverse direction DT from an optical axis OA that extends along the longitudinal direction DL and intersects with the incident surface 11a and the emission surface 11b. Each light beam is incident on the incident surface 11a at a location shifted from the optical axis OA in the transverse direction DT. This configuration allows one or more light beams to be obliquely emitted.
Inventors:
YAMASAKI TSUTOMU (JP)
Application Number:
PCT/JP2020/000887
Publication Date:
October 08, 2020
Filing Date:
January 14, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G02B3/00; G02B5/00; G02B6/028; G02B6/42; H01S5/022; H01S5/183
Domestic Patent References:
| WO2014054420A1 | 2014-04-10 | |||
| WO2019163197A1 | 2019-08-29 |
Foreign References:
| JPH11271575A | 1999-10-08 | |||
| JPH01501827A | 1989-06-22 | |||
| JP2016031438A | 2016-03-07 | |||
| US20170261650A1 | 2017-09-14 | |||
| JP2015232717A | 2015-12-24 | |||
| JP2013167857A | 2013-08-29 | |||
| JPS6345514U | 1988-03-28 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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