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US 6,672,724 B1Granted
Projection system with integrated optical device
AssigneeInFocus Corporation
InventorsMark Peterson, Jeff Gohman
Life of this patent
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AssigneeInFocus Corporation
InventorsMark Peterson, Jeff Gohman
Estimating the term…
An integrated prism-based optical device for a projection system performs light integration, beam shaping, and input/output beam separation. The integrated optical device preferably includes a light integrator tunnel with a first lens located adjacent one end and a prism located adjacent an opposite end. A second lens is located adjacent another side. The individual elements are preferably secured together using an index matching adhesive to form a unitary optical device. The integrated optical device is compact and provides uniform, high intensity light to the display device. The integrator tunnel may have a wedge or frustum shape eliminating the need for the first lens. The integrated optical device allows for a projector that requires fewer parts, is lighter weight, more compact, less costly, and more easily assembled than prior projection systems.
An integrated optical device for use in an image projection system that includes a light source for emitting a light beam that propagates along an optical path through the integrated optical device and is received by a display device that produces a color image, comprising:
An integrated optical device for use in an image projection system that includes a light source for emitting a light beam that propagates along an optical path through the integrated optical device and is received by a display device that produces a color image, comprising:
An integrated optical device for use in an image projection system that includes a light source for emitting a light beam that propagates along an optical path through the integrated optical device and is received by a display device that produces a color image, comprising:
Dependencies are inferred from the claim text.