Optical device and apparatus comprising the optical device
US7300183B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2005 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Aug 31, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
Abstract
On a front wall of a mold resin (13) sealing a light emitter (12), a direct emission region (18), through which the light emitted from the light emitter (12) directly passes to the outside, and a total reflection region (19), by which the light emitted from the light emitter (12) is totally reflected, are formed. The direct emission region (18) is formed into a shape of a convex lens. A light reflection portion (20) which is made of a concave mirror is provided on the rear face of the mold resin (13). When a part of the light emitted from the light emitter (12) passes through the direct emission region (18), it is affected by the lens to be emitted to the front direction. After another part of the light emitted from the light emitter (12) is totally reflected by the total reflection region (19), it is reflected by the light reflection portion (20) to be emitted to the front direction through the total reflection region (19).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.