Automobile lamp
US8083388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2009 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Feb 26, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automobile lamp includes a light emitting element used as an initial light source, a light guide element for calculating a divergence angle and a light emitting area of the divergence angle of the initial light source, and a lens element to enhance a light extraction efficiency of the light emitting element and produce a light source with a predetermined light pattern and a high light extraction efficiency. A projecting element is used for enhancing the contrast of the light pattern of the light source, so that the automobile lamp can project a high-contrast cutoff line. A light emitting surface of the light emitting element is designed with a predetermined shape, such that no other optical component is required for projecting a light beam with a cross-section of a predetermined shape, so as to enhance a light energy utilization efficiency of the automobile lamp effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.