Multilayer control of gobo shape

• US 20050206328A1
• Filed: 05/13/2005
• Published: 09/22/2005
• Est. Priority Date: 09/22/1999
• Status: Active Grant

• Current Assignee: Production Resource Group LLC
• Original Assignee: Production Resource Group LLC
• Inventors: Hunt, Mark A.
• Granted Patent: US 7,641,347 B2
• Time in Patent Office: Days
• US Class Current: 315/294
• CPC Class Codes: F21S 10/007 using rotating transparent or colored disks, e.g. gobo wheels
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: G09F 19/18 involving the use of optical projection means, e.g. projection of images on clouds projection apparatus per se G03B

Abstract

A control of gobos defend by records in the gobo. The gobos are formed by menued shapes.

Claims

1. A stage lighting system, comprising:

a source of light producing a light beam;

an electronic device in a path of the source of light, and which receives an electronic file representing an image to be used to shape the light beam, wherein said electronic file comprises a plurality of polygons which are defined as vectors.

2. A system as in claim 1, further comprising a digital signal processor, which carries out arithmetic operations on said vectors.

3. A device as in claim 2′

, wherein one of said arithmetic operations comprises rotating the image and thereby rotating a shaped beam of light which has been shaped by the image.

4. A device as in claim 2, wherein one of said arithmetic operations comprises matrix arithmetic carried out on the polygons.

5. A method of displaying light from a stage light, comprising:

projecting said light through a digital device which is digitally controllable to determine a shape of projected light based on a digital control signal; and

driving said digital device with a file that executes code to form said digital control signal, which changes at different times.

6. A method as in claim 5, wherein said code comprises an associated area to hold static values and variable portions, and further comprising modifying said variable portions.