US 11,698,176 B2
Illumination device and vehicle lamp
Yuta Yamaguchi, Tokyo (JP); and Toshimitsu Watanabe, Kyoto (JP)
Assigned to STANLEY ELECTRIC CO., LTD., Tokyo (JP)
Appl. No. 17/794,765
Filed by Stanley Electric Co., Ltd., Tokyo (JP)
PCT Filed Jan. 19, 2021, PCT No. PCT/JP2021/001647
§ 371(c)(1), (2) Date Jul. 22, 2022,
PCT Pub. No. WO2021/153342, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 2020-013645 (JP), filed on Jan. 30, 2020.
Prior Publication US 2023/0075945 A1, Mar. 9, 2023
Int. Cl. F21S 41/14 (2018.01); F21S 41/176 (2018.01); F21S 41/25 (2018.01); F21S 41/16 (2018.01)
CPC F21S 41/176 (2018.01) [F21S 41/16 (2018.01); F21S 41/25 (2018.01)] 10 Claims
OG exemplary drawing
 
1. An illumination device comprising:
a laser light source configured to emit a laser beam;
a wavelength conversion member that includes a laser beam irradiation region to which the laser beam is radiated and that is configured to emit a wavelength converted light excited by radiation of the laser beam;
a laser beam scanning mechanism configured to form a light distribution pattern according to a scanning range of the laser beam by scanning the laser beam radiated to the laser beam irradiation region; and
a projection lens configured to project illumination light that forms the light distribution pattern forward,
wherein an incidence angle of the laser beam, which is scanned by the laser beam scanning mechanism, with respect to the wavelength conversion member is set to an angle where the laser beam does not directly enter the projection lens when the wavelength conversion member is damaged, chipped or fallen off, and
the laser light source and the laser beam scanning mechanism are located at a position corresponding to at least one of an upper side and a lower side of the light distribution pattern with respect to the wavelength conversion member, and are disposed to be deviated to either one of one side corresponding to a left side of the light distribution pattern and other side corresponding to a right side of the light distribution pattern.