Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2001-06-15
2002-10-15
Ben, Loha (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C382S181000, C382S203000, C382S228000, C358S537000, C358S540000, C345S418000, C345S440000, C348S026000
Reexamination Certificate
active
06466357
ABSTRACT:
FIELD
The present invention relates to a system of controlling light beam pattern (“gobo”) shape in a pixilated gobo control system.
BACKGROUND
Commonly assigned patent application Ser. No. 08/854,353, now U.S. Pat. No. 6,188,933, the disclosure of which is herewith incorporated by reference, describes a stage lighting system which operates based on computer-provided commands to form special effects. One of those effects is control of the shape of a light pattern that is transmitted by the device. This control is carried out on a pixel-by-pixel basis, hence referred to in this specification as pixilated. Control is also carried out using an x-y controllable device. The preferred embodiment describes using a digital mirror device, but other x-y controllable devices such as a grating light valve, are also contemplated.
The computer controlled system includes a digital signal processor
106
which is used to create an image command. That image command controls the pixels of the x-y controllable device to shape the light that it is output from the device.
The system described in the above-referenced application allows unparalleled flexibility in selection of gobo shapes and movement. This opens an entirely new science of controlling gobos. The present inventors found that, unexpectedly, even more flexibility is obtained by a special control language for controlling those movements.
SUMMARY
The present disclosure defines a way of communicating with an x-y controllable device to form special electronic light pattern shapes. More specifically, the present application describes using a control language to communicate with an electronic gobo in order to reposition part or all of the image that is shaping the light.
REFERENCES:
patent: 5828485 (1998-10-01), Hewlett
patent: 5852443 (1998-12-01), Kenworthy
patent: 5878413 (1999-03-01), Agrawal et al.
patent: 5995660 (1999-11-01), Andoh et al.
patent: 6091852 (2000-07-01), Entleitner et al.
patent: 6185330 (2001-02-01), Hirao
patent: 6256136 (2001-07-01), Hunt
patent: 6272241 (2001-08-01), Tattersall
patent: 6285783 (2001-09-01), Isomura et al.
patent: 6317517 (2001-11-01), Lu
Ben Loha
Fish & Richardson P.C.
Light and Sound Design Ltd.
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