Spatial light modulator based phase contrast image projection system
US5508841A · kind A · utility
84Cited by
10References
20Claims
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Key dates
| Filing date | Jan 9, 1995 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Jan 9, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0841
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A phase-contrast DMD based image system 36 for projecting an amplitude and phase modulated image. A flexure beam DMD array 34 is used to allow analog phase modulation of reflected light 38. The phase modulation is converted to amplitude modulation by the phase-contrast imaging optics including a phase plate 42. The resulting amplitude modulated wave is flicker-free and does not need to be synchronized to optical image sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.