Light-guide module having light shielding structure
US7576895B2 · kind B2 · utility
2Cited by
6References
16Claims
0Family size
Inventor
Key dates
| Filing date | Sep 10, 2004 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Oct 1, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0458
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light-guide module is used for guiding the incident light to a process device. The light-guide module includes an entrance and a plurality of reflected mirrors. The entrance is provided for entering the signal light. The reflected mirrors are arranged as a predetermined light route for guiding out the signal light. One of the reflected mirrors includes a light shielding structure for preventing the noise reflecting from the reflected mirror so as to prevent the noise light from entering the image sensing device and to prevent the image sensing device to process the noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.