Patent ID: 7551341
Filing Date: 2009-06-23
Classification: G03B,G09G,H04N

Abstract:
1. A display comprising: a light source capable of directing light onto a first spatial light modulator, the first spatial light modulator comprising a plurality of first elements switchable between ON and OFF states, transfer optics disposed to direct light modulated by the first spatial light modulator onto a second spatial light modulator, and a driver configured to generate first and second control signals for the first and second spatial light modulators respectively based on image data, wherein: the driver is configured to generate a pattern based upon the image data, the pattern having a spatially-varying density; the driver is configured to generate the first control signal so as to set elements of the first spatial light modulator according to the pattern; the transfer optics are characterized by a transfer function that blurs light originating from the first spatial light modulator at the second spatial light modulator; the second spatial light modulator comprises a plurality of elements switchable between ON and OFF states and the driver is configured to switch the elements of the second spatial light modulator between their ON and OFF states multiple times during an image frame; and the driver is configured to estimate a light field at the second spatial light modulator corresponding to the pattern and to base the second control signals on the estimated light field.