Patent ID: 8432590
Filing Date: 2013-04-30
Classification: G03H

Abstract:
1. A method of displaying an image holographically, the method comprising: inputting display image data defining said image for display; processing said image data to determine first image data representing a first spatial frequency portion of said image data and second image data representing a second spatial frequency portion of said image data, wherein said second spatial frequency is higher than said first spatial frequency; displaying a hologram of said first image data on a spatial light modulator (SLM) to form a holographically generated intermediate real image; and modulating said intermediate real image using said second image data to display said image; wherein said displaying of said hologram comprises modulating light from a laser light source using said spatial light modulator, wherein said modulating of said intermediate real image comprises intensity modulating said intermediate real image using a second spatial light modulator, wherein said modulating comprises determining from said second image data modulation data for driving said second spatial light modulator, and wherein said determining of said modulation data comprises adjusting said modulation data to increase a proportion of light transmitted by said intensity modulating.