US 11,865,964 B2
Optical apparatus, method for manufacturing optical apparatus, and headlight
Tsuyoshi Maro, Otokuni-gun (JP); Atsushi Yusa, Otokuni-gun (JP); Naoki Hiratoge, Yokohama (JP); and Junichi Yokoyama, Yokohama (JP)
Assigned to MAXELL, LTD., Otokuni-gun (JP)
Appl. No. 17/910,973
Filed by MAXELL, LTD., Kyoto (JP)
PCT Filed Mar. 4, 2021, PCT No. PCT/JP2021/008488
§ 371(c)(1), (2) Date Sep. 12, 2022,
PCT Pub. No. WO2021/182303, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-043856 (JP), filed on Mar. 13, 2020.
Prior Publication US 2023/0139866 A1, May 4, 2023
Int. Cl. B60Q 1/00 (2006.01); G02B 7/02 (2021.01); G02B 7/24 (2021.01); G02B 13/00 (2006.01)
CPC B60Q 1/0035 (2013.01) [B60Q 1/0088 (2013.01); G02B 7/023 (2013.01); G02B 7/24 (2013.01); G02B 13/002 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical apparatus comprising a lens, a plurality of solid-state light sources, and a substrate on which the solid-state light sources are mounted, wherein
the substrate includes a base material that is rigid, and a mount surface, which is formed on the base material, which has a curved surface shape that substantially matches a focal plane shape of the lens, and on which a circuit pattern is formed,
the solid-state light sources are mounted on the mount surface,
the substrate is positioned with respect to the lens such that a line connecting centers of light-emitting surfaces of the plurality of solid-state light sources substantially coincides with a focal plane of the lens in a cross-sectional view, or the line is present at a position spaced apart from the focal plane in an optical axis direction of the lens, and such that a position of the focal plane of the lens substantially coincides with positions of emission surfaces of the solid-state light sources,
the base material is formed of metal, ceramic, or a highly heat-conductive resin, and includes a formation surface formed in a curved surface shape that substantially matches the focal plane shape of the lens, and
an insulating layer is formed on the formation surface, the insulating layer having an electrical insulation property and including a surface to serve as the mount surface.