Low-beam primary optical element, vehicle lamp module, vehicle lamp, and vehicle
US12117137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2021 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Sep 19, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2102/135
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low-beam primary optical element for a vehicle lamp, a vehicle lamp module comprising the low-beam primary optical element, a vehicle lamp, and a vehicle. The low-beam primary optical element comprises light entrance portion, a light passage portion and a light exit portion which are sequentially arranged from back to front. The light exit portion comprises a main light exit surface and a second light exit surface connected to the main light exit surface. A low-beam cutoff line structure is provided at the secondary light exit surface. The secondary light exit surface is configured to refract light emitted to the low-beam cutoff line structure forward and upward. The low-beam primary optical element has a simple structure, and can effectively improve the color of a low-beam light-dark cutoff line and mitigate color dispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.