Use of a lens array to increase the contrast ratio produced by a LCoS microdisplay
US7012755B1 · kind B1 · utility
1Cited by
4References
42Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2004 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Feb 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136277
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens array is placed over a cover glass of a pixel based LCoS display device. The lens array is situated so that an individual lens in the array corresponds to an individual pixel in the display device. Each lens collects light and/or reflections from a high contrast portion of its corresponding pixel and forwards it to a viewing area. The lens array reduces effects of low contrast portions of the pixels (particularly, for example, perimeters of adjacent pixels having relatively large differences in electrical field strengths).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.