×

Light shielding member for a micro-mirror projection system

  • US 7,708,412 B2
  • Filed: 08/10/2006
  • Issued: 05/04/2010
  • Est. Priority Date: 08/12/2005
  • Status: Active Grant
First Claim
Patent Images

1. A micro-mirror projection system, comprising:

  • an optical engine unit including;

    optical parts configured to convert incident light into an image signal,a primary lens configured to transmit the image signal, andan engine cover configured to cover the optical parts and the primary lens;

    a DMD (digital micro mirror device) configured to reflect the image signal transmitted from the primary lens;

    a prism formed closely to the DMD and configured to adjust a path of light;

    a projection lens configured to project an on-beam of light from the prism toward a screen; and

    a light-blocking part provided on an incident side of the projection lens and configured to shield at least light of a flat state region located between the on-beam and an off-beam reflected from the DMD, such that only the on-beam passes through the projection lens,wherein the light-blocking part is formed by bending a part of the engine cover such that the light-blocking part is interposed between the prism and the projection lens.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×