Lens member and vehicle lighting unit
US9822947B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2015 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Jan 7, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V13/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lens member in front of a light source can include: an incident portion dividing the entering light rays into first light rays obliquely upward and forward and second light rays obliquely upward and rearward; a first reflecting surface reflecting the first light rays; a second reflecting surface reflecting the second light rays; a third reflecting surface reflecting the second light rays reflected by the second reflecting surface; a fourth reflecting surface reflecting at least part of the first light rays reflected by the first reflecting surface and the second light rays reflected by the third reflecting surface; and a light exiting surface having a convex lens surface having a rear-side focal point. The fourth reflecting surface extends rearward from the rear-side focal point. A predetermined light distribution pattern is formed by superposing first and second partial light distribution patterns upon each other as a synthetic light distribution pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.