US 12,092,821 B2
Optical component, image display device using same, and head-up display
Motohiro Umehara, Yasu (JP); Satoru Tsubokura, Omihachiman (JP); Mitsuhiro Kajihara, Higashiomi (JP); and Yoshinori Kubo, Omihachiman (JP)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 17/430,294
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Jan. 24, 2020, PCT No. PCT/JP2020/002600
§ 371(c)(1), (2) Date Aug. 11, 2021,
PCT Pub. No. WO2020/166306, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 2019-023374 (JP), filed on Feb. 13, 2019.
Prior Publication US 2022/0137407 A1, May 5, 2022
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); G02B 27/01 (2006.01); H05K 7/20 (2006.01)
CPC G02B 27/0149 (2013.01) [H05K 7/20972 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An optical component, comprising:
a substrate containing sapphire, wherein
the substrate is provided with a functional portion and a heat dissipating portion,
an inclination of a main face of the substrate is 75° or greater with respect to a c-plane of the sapphire, and
the functional portion and the heat dissipating portion are provided so that an angle formed by a c-axis of the sapphire and a line segment connecting the functional portion and the heat dissipating portion is 15° or less.