Headlight device module including a condensing optical unit and a light guide member with cuttoff-lines forming parts
US12055279B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2021 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | May 13, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2102/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A headlight module includes: a light source; a condensing optical unit that allows light generated by the light source to enter and transforms the light into condensed light; and a light guide member including a first cutoff line formation part that forms light in a first light distribution pattern from the condensed light, a second cutoff line formation part that forms light in a second light distribution pattern from the condensed light, a first emission surface that emits light in a first illuminance distribution pattern corresponding to the first light distribution pattern, and a second emission surface that emits light in a second illuminance distribution pattern corresponding to the second light distribution pattern. Light in a combined illuminance distribution pattern obtained by adding the light in the first illuminance distribution pattern and the light in the second illuminance distribution pattern is emitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.