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US 6,886,943 B1Granted
High-resolution projection display system
AssigneeJDS Uniphase Corporation
InventorsMichael R. Greenberg, Matthew W. Bellis
Life of this patent
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Abstract
An image display system uses a polarizing beam splitter to direct light from a lamp to multiple spatial modulators. The spatial light modulators (“SLM”) each generate an image portion, which are stitched together on a display screen to obtain a high resolution image. In particular embodiment, image portions from two conventional SLMs, each controlling about two million pixels, are stitched together to form an image having about four million pixels. In another embodiment, two lamps are used with four SLMs to produce a resultant image having about eight million pixels.
Claims15
A display system comprising:
- a lamp providing a lamp output;
- a light integrator optically coupled to receive the lamp output from the lamp and for providing a homogenized light output;
- a beam splitter optically coupled to receive the homogenized light output from the light integrator and configured to provide a first light beam having a first polarization state and a second light beam having a second polarization state;
- a first imager optically coupled to receive the first light beam for producing a first modulated light beam, wherein the first imager is a first spatial light modulator;
- first projection optics optically coupled to receive the first modulated light beam and configured to expand the first modulated light beam to form a first display image portion;
- a second imager optically coupled to receive the second light beam and for producing a second modulated light beam, wherein the second imager is a second spatial light modulator;
- a second polarizing beam splitter disposed between the polarizing beam splitter and the first spatial light modulator;
- and
- a third polarizing beam splitter disposed between the polarizing beam splitter and the second spatial light modulator, and
- second projection optics optically coupled to the second light beam and configured to expand the second modulated light beam to form a second display image portion, wherein the first display image portion and the second image display portion are combined at a margin to form a display.
7 more elements
A display system comprising:
- a lamp providing a lamp output;
- a light integrator optically coupled to the lamp output from the lamp and providing a homogenized light output;
- a beam splitter optically coupled to the homogenized light output from the light integrator and configured to provide a first light beam and a second light beam;
- a first imager optically coupled to the first light beam and producing a first modulated light beam;
- first projection optics optically coupled to the first modulated light beam and configured to expand the first modulated light beam to form a first display image portion;
- a second imager optically coupled to the second light beam and producing a second modulated light beam;
- and
- second projection optics optically coupled to the second light beam and configured to expand the second modulated light beam to form a second display image portion on the display screen, wherein the first display image portion and the second image display portion are combined at a margin to form a display image, wherein the beam splitter is a polarizing beam splitter, the first light beam has a first polarization state, and the second light beam has a second polarization state, wherein the polarizing beam splitter is a wire-grid polarizing beam splitter, wherein the first imager is a first liquid-crystal-on-silicon spatial light modulator and the second imager is a second liquid-crystal-on-silicon spatial light modulator, and further comprising:
- a half-wave retarder plate disposed between the polarizing beam splitter and the first liquid-crystal-on-silicon spatial light modulator;
- a second polarizing beam splitter disposed between the half-wave retarder plate and the first liquid-crystal-on-silicon spatial light modulator;
- and
- a third polarizing beam splitter disposed between the polarizing beam splitter and the second liquid-crystal-on-silicon spatial light modulator.
9 more elements
Dependencies are inferred from the claim text.