Micro-optical device, spatial optical modulator and projector utilizing the micro-optical device
US7561336B2 · kind B2 · utility
32Cited by
16References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Dec 8, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/7441
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A micro-optical device includes a plurality of minute optical elements each having a curved surface operable to condense incident light. The minute optical elements are arranged at constant intervals. The curved surface is expressed by two or more F values. Each of the minute optical elements is a transmission lens element having the curved surface including a substantially flat part at a center of the transmission lens element, wherein the curved surface is convex or concave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.