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Image shifting module and optical projection device

  • US 7,477,799 B2
  • Filed: 08/29/2005
  • Issued: 01/13/2009
  • Est. Priority Date: 11/12/2004
  • Status: Active Grant
First Claim
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1. An image shifting module of a projection device for shifting each imaging position of a plurality of sub-images respectively in each frame time, the image shifting module comprising:

  • a first vibration mechanism disposed on a transmission path of the sub-images, the first vibration mechanism shifting the imaging position of the sub-images along a horizontal direction by a first distance in each frame time; and

    a second vibration mechanism disposed on the transmission path of the sub-images, the second vibration mechanism shifting the imaging position of the sub-images along a vertical direction by a second distance in each frame time.

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