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US 6,412,972 B1Granted
Digital light protection apparatus with digital micromirror device and rotatable housing
AssigneeAltman Stage Lighting Co., Inc.
InventorsRoger A. Pujol, Thomas P. Tyler
Life of this patent
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Abstract
There is provided a digital light projection apparatus for projecting digitally selected light beams onto a stage display to create the effect of a continuously moving image. The apparatus has a fixed housing with a luminaire and a deformable micromirror device and a rotatable housing with a fixed mirror and a rotatable mirror. The deformable micromirror device directs selected light beams generated by the luminaire to the fixed and rotatable mirrors for projection to a stage display. Color may be achieved by use of color wheels, chromatic prisms, and/or lasers.
Claims33
A light display system comprising:
- a fixed first housing having a light source that generates a light beam and a first micromirror device that generates an digital light beam from said light beam and directs said digital light beam along a first optical path;
- a projection lens that directs said digital light beam along a second optical path;
- a rotatable second housing connected to and rotatable relative to said fixed first housing about a first axis, said rotatable second housing having a fixed reflector that directs said digital light beam along a third optical path, and a rotatable reflector that is rotatable about a second axis and adapted to direct said digital light beam along a fourth optical path onto a stage display;
- a digital signal controller that controls said micromirror device to reflect said digital light beam along said first optical path;
- means for rotating said rotatable second housing about said first axis;
- means for rotating said rotatable reflector about said second axis;
- and
- a substantially totally internally reflective prism between said first micromirror device and said projection lens.
5 more elements
Dependencies are inferred from the claim text.