Optical device for an optical element and apparatus employing the device
US6578989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2001 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Jan 3, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device for an optical element to control a light path about emission light emitted from the optical element to external or incident light entered from external to the optical element, which includes a light reflecting member, a resin member covering a light reflection surface of the light reflecting member, and a bumper member interposed between the light reflecting member and the resin member. The resin member is provided with a boundary surface for almost totally reflecting light deviated from a predetermined region in front of the optical element, and the boundary surface of the resin member or the light reflecting member is so disposed that light deviating from the predetermined region in front of the optical element and passing between the optical element and an external of the optical device is reflected more than once with each of the boundary surface and the light reflecting member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.