Projector for digital cinema
AssigneeTexas Instruments Incorporated
InventorDuane Scott Dewald
Life of this patent
Estimating the term…
Abstract
A digital cinema projection system (200) for projecting images onto a display screen. The projection system (200) comprises a lamp console (102) and a projector (202). The projector (202) receives digital image data, processes the digital image data to create an image data stream that is compatible with the chosen spatial light modulator, and uses the processed image data to modulate a beam of light from the lamp console (102). A primary projection lens (204) and lens adapter mounted on a rotatable turret (206) focus the modulated light onto a display screen. Alternatively, an integrated anamorphic projection lens is used to eliminate the need for a separate lens adapter.
Claims31
An optical projection system comprising:
- a lamp console, said lamp console comprising a lamp reflector and a lamp in said reflector, said lamp console for emitting a beam of light along a light path through an aperture in said console;
- and
- a projector disposed on said light path, said projector for selectively modulating said beam of light in response to an image signal, said projector comprising:
- a signal processor for receiving said image signal and formatting said image signal;
- at least one spatial light modulator for receiving said formatted image signal and said beam of light, said at least one spatial light modulator for selectively reflecting portions of said beam of light along a projection light path in response to said formatted image signal;
- optics for directing said beam of light onto said at least one spatial light modulator;
- and
- a primary lens for focusing light in said projection light path onto an image plane.
An image projection system comprising:
- a light source for projecting a beam of light along a light path;
- a spatial light modulator disposed on said light path, said spatial light modulator having a 5:4 aspect ratio and selectively modulating said beam of light;
- and
- an anamorphic lens disposed on said light path, said anamorphic lens having a magnification ratio of 1.5:1.
An optical system for selectively modulating a beam of light in response to an image signal, said optical system comprising:
- optics for receiving said beam of light directed along a first path and directing said beam of light onto said at least one spatial light modulator, said optics comprising:
- an integrator receiving light from said mirror;
- relay optics receiving light from said integrator;
- and
- a prism assembly receiving light from said relay optics and for splitting said beam of light into three monochromatic beams of light;
- a signal processor for receiving said image signal and formatting said image signal;
- at least one spatial light modulator for receiving said formatted image signal and said beam of light, said at least one spatial light modulator for selectively reflecting portions of said beam of light along a projection light path in response to said formatted image signal;
- and
- a primary lens for focusing light in said projection light path onto an image plane, said projection light path parallel to said first path.
An optical system comprising:
- a lamp console, said lamp console comprising a lamp reflector and a lamp in said reflector, said lamp console for emitting a beam of light along a light path through an aperture in said console;
- and
- a projector disposed on said light path, said projector for selectively modulating said beam of light in response to an image signal, said projector comprising:
- a signal processor for receiving said image signal and formatting said image signal;
- at least one spatial light modulator for receiving said formatted image signal and said beam of light, said at least one spatial light modulator for selectively reflecting portions of said beam of light along a projection light path in response to said formatted image signal;
- optics for directing said beam of light onto said at least one spatial light modulator, said optics comprising:
- an integrator in said light path for receiving light from said mirror;
- relay optics in said light path for receiving light from said integrator;
- and
- a prism assembly in said light path for receiving light from said relay optics and for splitting said beam of light into three monochromatic beams of light;
- and
- a primary lens for focusing light in said projection light path onto an image plane.
Dependencies are inferred from the claim text.