High-brightness, compact illuminator with integrated optical elements
US7390116B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2004 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Sep 18, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/74
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compact, high-brightness, integrated illuminator in which collection of light from a point-arc source is maximized by a multi-curvature reflector section configuration of elliptical reflector and segmented spherical retroreflector directing all light rays into a well-defined numerical aperture. The invention also integrates a homogenizer and other optical elements with the multi-curvature reflector section, constructs any or all of these components in a single block of optical material, or, alternatively, constructs these components with molded hollow reflective cavities fabricated in metal or plastic blocks. Cooling is provided by internal fluid channels within the block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.