Patent ID: 8172403
Filing Date: 2012-05-08
Classification: G02B,G03B,H04N

Abstract:
1. A coherent light projection system comprising: a coherent light source system configured at least to emit coherent light; an image forming system including one or more spatial light modulators configured to interact with the coherent light in a manner consistent with image data; a relay system configured at least to form an intermediate image at an intermediate image plane from coherent light output from the image forming system, the intermediate image being an aerial real image; a speckle reduction element located at or substantially at the intermediate image plane, the speckle reduction element having surface structures formed on a curved surface configured to transfer the intermediate image through it; a movement generating system configured at least to move the speckle reduction element; and a projection subsystem configured at least to project the intermediate image, as transferred through the speckle reduction element, onto a display surface, wherein the projection subsystem is adapted to project a curved object surface onto the display surface, and wherein the curvature of the curved object surface substantially matches the curvature of the curved surface of the speckle reduction element and is adapted to have a curvature that substantially matches a typical amount of curvature associated with film buckle effects for film-based projection systems.