Optical module and lamp
US9140847B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Mar 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp includes a frame, a light guide plate, a light source and a reflecting structure. The light guide plate is disposed on the frame and includes a light-incident surface, a first light-emitting surface and a second light-emitting surface. The second light-emitting surface is opposite to the first light-emitting surface, in which the light-incident surface connects the first light-emitting surface and the second light-emitting surface. The light source is adjacent to the light-incident surface and the light source is disposed in the frame. The reflecting structure is adjacent to the first light-emitting surface and includes at least two transparent sheets. The two transparent sheets are separated by an air gap, such that at least one light beam emitted from the first light-emitting surface is reflected back to the light guide plate and is emitted out from the second light-emitting surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.