US 12,305,823 B2
Vehicle lighting appliance lens, vehicle lighting appliance unit, and vehicle lighting appliance device
Kei Onoma, Isehara (JP)
Assigned to Ichikoh Industries, Ltd., Isehara (JP)
Appl. No. 18/568,960
Filed by Ichikoh Industries, Ltd., Isehara (JP)
PCT Filed Jun. 8, 2022, PCT No. PCT/JP2022/023164
§ 371(c)(1), (2) Date Dec. 11, 2023,
PCT Pub. No. WO2022/260095, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 2021-098331 (JP), filed on Jun. 11, 2021.
Prior Publication US 2024/0280232 A1, Aug. 22, 2024
Int. Cl. F21S 41/265 (2018.01); F21S 41/147 (2018.01); F21S 41/32 (2018.01); F21W 102/155 (2018.01)
CPC F21S 41/265 (2018.01) [F21S 41/147 (2018.01); F21S 41/321 (2018.01); F21W 2102/155 (2018.01)] 9 Claims
OG exemplary drawing
 
1. A vehicle lighting appliance lens comprising:
an incidence part on which at least a portion of light from a light source is incident;
a reflective surface that has a reflective-surface focal point and reflects incident light from the incidence part;
a cutoff-line forming part that is disposed in a left-right direction of a vehicle and forms a cutoff line by controlling a portion of reflected light from the reflective surface; and
an emission surface that emits the reflected light passing through the cutoff-line forming part in front of the vehicle as a light distribution pattern having the cutoff line, wherein,
the reflective-surface focal point is disposed in a vicinity of the cutoff-line forming part, and
the reflective surface has:
a first region in which the reflected light passes through the reflective-surface focal point; and
a second region in which the reflected light reaches a surface position of the vehicle lighting appliance lens, the surface position being away from the cutoff-line forming part toward the reflective surface, and passes right or left side of the reflective-surface focal point.