Granted Patent B2

US 7,350,941 · App. 11/129,615 · Granted Apr 1, 2008

Abstract

Claims (8)

1. A method of forming a digital framing shutter, comprising:

defining aspects of a framing shutter, including four shutters, each of which have a straight line portion for framing the shutter, said straight portion being definable by its position in a light beam and its angle; and

defining a record for a gobo which simulates said framing shutters.

2. A method of forming a digital framing shutter, comprising:

defining aspects of a framing shutter, including four shutters, each of which have a straight line portion for framing the shutter, said straight portion being definable by its position in a light beam and its angle; and

defining a record for a gobo which simulates said framing shutters, wherein said framing shutter record includes multiple values for positions of each of four framing shutters including a value D representing a distance between a portion of the framing shutter and an edge of an original spot of a light beam, and a value theta defining an angle between the framing shutter and the specified angle.

3. A method as in claim 2 , further comprising defining an offset representing a distance between an edge and an ideal edge.

4. A method as in claim 3 , wherein said value D comprises a distance between an edge of the framing shutter and an edge of the original spot.

Assignments (10)