Optical system for a motor vehicle for lighting under conditions of reduced visibility, especially under the conditions of fog, heavy rain or snowfall
US10344940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2018 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Aug 2, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S43/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The optical system comprises an optical component with an active part (1) made of an optically transparent material, a collimating element (2) and a light unit (3) to emit light rays (10) to the collimating element (2) to collimate light rays (10) and to direct them to the active part (1). Generally, the active part (1) has an output surface (12) on its front side for the output of light rays (10) out of the active part (1) towards the display surface (ZY) situated at a distance in front of the active part (1). Furthermore, the active part (1) comprises optical elements (13) whose output surfaces (15) are part of the output surface (12) to create light patterns (A) on the display surface (ZY). The optical elements (13) consist of convergent lenses (13a) and/or divergent lenses (13b), the optical elements (13) being arranged after each other in rows situated next to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.