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Device for adjusting light intensity for discharge lamp projectors

  • US 20050007560A1
  • Filed: 05/27/2004
  • Published: 01/13/2005
  • Est. Priority Date: 05/30/2003
  • Status: Active Grant
First Claim
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1. Device for adjusting light intensity for discharge lamp projectors comprising an optical assembly comprised of a discharge lamp and a spherical mirror, and of a Fresnel lens, provided in front of the lamp of said optical assembly, characterised in that an iris diaphragm is provided on said optical assembly, in front of the lamp, in correspondence of the focus of the optical assembly.

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