Thin image-capturing device
US7564495B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2005 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Feb 15, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1324
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image-capturing device for forming an image of an uneven surface of an object includes a light-guiding plate that has a detection surface for contacting the uneven surface of the object, a pair of lateral surfaces, one of which receives incident light from a primary light source such that the incident light is able to illuminate the uneven surface of the object on the detection surface, a total internal reflection surface opposite to the detection surface for reflecting totally light scattered by the uneven surface of the object, and a reflector surface connected to and forming a tilt angle with the total internal reflection surface. An imaging system is disposed to receive the light that was reflected by the reflector surface and that exits the light-guiding plate so as to form the image of the uneven surface of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.