Direct optical image projectors
US7440158B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2007 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Mar 28, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2227/03
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus includes a reconfigurable spatial light modulator, a light source, and a transmission filter. The reconfigurable spatial light modulator is capable of producing spatially varying amplitude and/or phase modulations of an incident light wavefront. The light source is configured to direct an illumination light beam towards the reconfigurable spatial light modulator such that the modulator produces a modulated outgoing light beam there from. The transmission filter is configured to spatially filter a light pattern formed by the outgoing light beam and to selectively transmit light from substantially only one diffractive order of the light pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.