Industry Patents

Patent: 5934794

Projection Gate Apparatus Having an Axially-Translatable Mount

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Patent Number:	5934794
Title:	Projection Gate Apparatus Having an Axially-Translatable Mount
Abstract:	An optical system for an image projector luminaire includes a variable-focus lens having a depth-of-field adjustable as to location along an optical axis, and two carriages each supporting at least one image pattern generator at separate locations along the optical axis, at least one of those carriages being adjustable as to location along the optical axis. The system is operable to bring either or both image pattern generators into focus. Each carriage may support pattern generator exchanger mechanisms for selecting one of a plurality of available patterns, and may also rotate the selected pattern. The movable carriage, the lens, and the pattern exchanger mechanisms may all be motorized and operable by remote or computer control.
Country of Issue:	US
First Named Inventor:	Hutton
Assignee:	Vari-Lite
Continuation or Divisional of:
International Classification:	F21V 21/28
US Classification:	362/283
Issue Date:	08-10-1999
Filing Date:	09-30-1997
Application :	08941172
Notes:
Link to Patent at freepatentsonline.com:	5934794 at Freepatentsonline
Link to World Patent Family¹:	World Patent Family at European Patent Office
Link to Google Patents¹:	5934794 at Google Patents

1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.

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