Spatial optic modulating system with speckle reduction and method thereof
US7522331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Aug 28, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/48
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A spatial optic modulating system with speckle reduction and a method thereof are disclosed. According to an embodiment of the present invention, a spatial optic modulating system includes a spatial optic modulator, which modulates and reflects an image transferred in accordance with an upward or downward movement of a ribbon that is operated according to a contraction or expansion of a piezoelectric element, an image lens unit, which transfers an image modulated from the spatial optic modulator as a diffraction image to a scanner, and a phase modulator, which modulates a phase of the diffraction image transferred from the image lens unit. With the present invention, an image, from which a speckle is removed, can be displayed by modulating a phase of an image projected by using a spatial optic modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.