PROJECTION DISPLAY DEVICES EMPLOYING FRUSTRATED TOTAL INTERNAL REFLECTION
First Claim
Patent Images
1. A projection display device comprising:
- an optical interface;
a microelectromechanical system including an array of movable elements corresponding to image pixels, each movable element being movable toward the optical interface to locally frustrate total internal reflection at the optical interface and movable away from the optical interface to not locally frustrate total internal reflection at the optical interface;
a light source arranged to illuminate the optical interface at an angle effective for producing total internal reflection at the optical interface; and
an optical projector system arranged to project one but not both of;
light from the light source that undergoes total internal reflection at the optical interface, andlight from the light source that is frustrated by the movable elements from undergoing total internal reflection at the optical interface.
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Accused Products
Abstract
An image forming device for use in an optical projection device includes an optical interface and an array of movable elements selectively movable toward or away from the optical interface to selectively locally frustrate total internal reflection at the optical interface such that light totally internally reflected at the optical interface defines an image. A projection display device includes an optical projector system including the image forming device.
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Citations
25 Claims
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1. A projection display device comprising:
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an optical interface; a microelectromechanical system including an array of movable elements corresponding to image pixels, each movable element being movable toward the optical interface to locally frustrate total internal reflection at the optical interface and movable away from the optical interface to not locally frustrate total internal reflection at the optical interface; a light source arranged to illuminate the optical interface at an angle effective for producing total internal reflection at the optical interface; and an optical projector system arranged to project one but not both of; light from the light source that undergoes total internal reflection at the optical interface, and light from the light source that is frustrated by the movable elements from undergoing total internal reflection at the optical interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An image formation device comprising:
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an optical interface; and a microelectromechanical system including an array of movable elements corresponding to image pixels, each movable element being movable toward the optical interface to locally frustrate total internal reflection at the optical interface and movable away from the optical interface to not locally frustrate total internal reflection at the optical interface. - View Dependent Claims (17)
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18. An apparatus comprising:
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an optical interface arranged to reflect a beam of light by total internal reflection; and a microelectromechanical system configured to spatially modulate the total internal reflection across the optical interface such that the beam reflected by total internal reflection defines an image. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A projection display device comprising:
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an image forming device including an optical interface and an array of movable elements selectively movable toward or away from the optical interface to selectively locally frustrate total internal reflection at the optical interface such that light totally internally reflected at the optical interface defines an image; and an optical projector system including the image forming device. - View Dependent Claims (25)
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Specification