Industry Patents

Patent: 11649946

Lighting Device with Afocal Projection Optics and Corresponding Method of Operation

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Patent Number:	11649946
Title:	Lighting Device with Afocal Projection Optics and Corresponding Method of Operation
Abstract:	A lighting device includes a light source configured to emit a light beam through an afocal projection optics along a propagation path of the light beam from a negative lens to a positive lens. The lighting device includes a further negative lens interposed and mobile along the propagation path of the light beam from the negative lens to the positive lens. The lighting device also includes an optical element interposed in the propagation path of the light beam between the negative lens and the further negative lens. The optical element includes a cylindrical lens, a prism or an axicon.
Country of Issue:	US
First Named Inventor:	Frison, Alfier, Quadri
Assignee:	Clay Paky
Continuation or Divisional of:
International Classification:	F21V 5/04
US Classification:	F21V 5/04
Issue Date:	05-16-2023
Filing Date:	01-10-2022
Application :	17/572221
Notes:
Link to Patent at freepatentsonline.com:	11649946 at Freepatentsonline
Link to World Patent Family¹:	World Patent Family at European Patent Office
Link to Google Patents¹:	11649946 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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