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Image projection method and image projector

  • US 6,575,581 B2
  • Filed: 12/28/2000
  • Issued: 06/10/2003
  • Est. Priority Date: 12/28/1999
  • Status: Expired due to Term
First Claim
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1. An image projection method for projecting laser beams onto a display screen to display an image, wherein a detection wave is projected onto the display screen along with the laser beams by way of objective lens of an optical modulator unit that also projects the laser beams, and the detection wave reflected by the display screen is detected so as to find out an obstacle intruding into the projection area of the laser beams.

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