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Selectable mechanical and electronic pattern generating aperture module

  • US 5,113,332 A
  • Filed: 05/24/1989
  • Issued: 05/12/1992
  • Est. Priority Date: 05/24/1989
  • Status: Expired due to Term
First Claim
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1. A selectable aperture apparatus for use in a stage lighting system or the like, comprising:

  • base means;

    means for movably supporting said base means and having formed therein a first opening and a second opening;

    an electronic pattern aperture means disposed within said first opening in said supporting means for selectively forming a plurality of opaque patterns for modifying a beam of light travelling along an optical axis passed through said electronic pattern aperture means, said second opening being capable of allowing the transmission of a beam of light at substantially full intensity, with no significant attenuation therein; and

    drive means for controllably moving said supporting means in such a manner so that said first and second openings are selectively intersected by said optical axis.

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