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High resolution high contrast edge projection

  • US 8,754,954 B2
  • Filed: 05/16/2011
  • Issued: 06/17/2014
  • Est. Priority Date: 05/16/2011
  • Status: Active Grant
First Claim
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1. A method for projecting a special purpose image using a lower resolution digital projector array, the method comprising:

  • choosing a pattern to be illuminated, the pattern having at least one high contrast edge feature that extends continuously across a plane of the illumination;

    applying an illumination pattern on the projector array to define a pixellated, high contrast approximation to the edge feature; and

    providing an anisotropically blurring optical element between an illumination source and the projection that blurs each pixel of a connected set of pixels of the illumination pattern more in directions of pixels of equal or greater illumination, and less in directions of pixels of lower illumination.

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