Lighting apparatus and automobile including the same
US9557027B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2015 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Jan 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting apparatus includes: a light guide which is tubular and includes a light entry portion in one end in a tube axis direction; and a light source arranged corresponding to the light entry portion. The light entry portion includes a light redirecting portion which changes a traveling direction of light entering from the first light source to a direction that is substantially parallel to the tube axis direction of the light guide. The light guide includes: plural light-emitting faces which are ring-shaped and formed concentrically in the other end in the tube axis direction of the light guide; and a non light-emitting face which is wall-like and formed along the tube axis direction of the light guide, at a border of adjacent ones of the light-emitting faces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.