Vehicle headlight and projection lens
US9174689B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2014 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Feb 24, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2102/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle headlight can form a predetermined high-beam light distribution pattern, while being capable of causing the chromaticity of the entire light distribution pattern to fall within a white range (JIS D5500). The vehicle headlight can include: a projection lens that can control light incident on its light incident surface at a first incident position near its optical axis to be directed in a direction not parallel to the optical axis, can control light incident at a second incident position away from the optical axis to be directed in a direction parallel to the optical axis, and can control light incident at an incident position between the first and second incident positions to be directed in a direction closer to the direction parallel to the optical axis as the light is incident at an incident position closer from the first incident position to the second incident position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.