Industry Patents

Patent: 5608580

Rotary-Prism Refracting Device For Optical Equipment, Such as a Light Projector

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Patent Number: 5608580 
Title: Rotary-Prism Refracting Device For Optical Equipment, Such as a Light Projector 
Abstract: A device presenting a disk supporting two prisms and rotating about an axis offset in relation to the path of an incident beam. One of the two prisms is in the shape of part of a circle, and presents a series of faces in the form of parallel portions of the circle, and which are inclined, in relation to a plane perpendicular to their axis, by an angle increasing gradually towards the peripheral face of the prism. The disk and the two prisms are rotated by two electric motors via respective gear assemblies; and the disk is fitted to a shaft also fitted with a gear of the respective gear assembly. Each of the two prisms is integral with a ring gear, and the respective gear assembly presents a gear rotating on the shaft of the disk and meshing simultaneously with both ring gears.  
Country of Issue: US 
First Named Inventor: Quadri 
Assignee: Clay Paky 
Continuation or Divisional of:  
International Classification: G02B 5/04 
US Classification: 359/831 
Issue Date: 03-04-1997 
Filing Date: 03-23-1995 
Application : 409175 
Notes:  
Link to Patent at freepatentsonline.com: 5608580 at Freepatentsonline 
Link to World Patent Family1: World Patent Family at European Patent Office 
Link to Google Patents1: 5608580 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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