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OPTICAL PROJECTION SUBSYSTEM

  • US 20110122371A1
  • Filed: 01/13/2011
  • Published: 05/26/2011
  • Est. Priority Date: 07/31/2006
  • Status: Active Grant
First Claim
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1. A projection subsystem, comprising:

  • a light engine that provides a light beam, the light engine including a collection lens, a collimator and at least one solid state incoherent light emitter that receives an electrical power level and that is couplable to a heat sink and that provides a light beam with an emitter luminous flux level;

    an image-forming device that receives image data and that receives at least a component of the light beam, the image-forming device providing an image;

    a projection lens assembly that receives the image and that provides an image projection beam having a projected luminous flux level; and

    the projection subsystem has a portability efficacy that comprises a ratio of luminous flux to electrical power level of at least 3.8 lumens for 1 watt, and a projection subsystem thickness of less than 14 millimeters.

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