Optical system with high contrast
US8405895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2008 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Dec 10, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/38
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system is disclosed that includes a housing that has an interior, a reflective interior surface, and a first opening. The optical system further includes a spatial light modulator that is disposed proximate the first opening and a light source that is disposed within the interior of the housing. The spatial light modulator modulates the light that is emitted by the light source to form image rays. The optical system further includes a first light redirecting film that is disposed proximate the first opening between the spatial light modulator and the light source. The first light redirecting film recycles at least a portion of the light that is emitted by the light source. The optical system further includes an optically absorptive film that is disposed proximate the first opening between the spatial light modulator and the viewing position. The optically absorptive film receives the image rays from the spatial light modulator and displays the received image rays to the viewing position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.