Image projection apparatus for producing an image supplied by parallel transmitted colored light
First Claim
1. A projection apparatus comprising:
- a) a light source;
b) a filter that has an array of pixels that each pass selected colors of light and reflect other colors, each pixel being subpixelated so that a single pixel passes selected light rays for selected colors, each subpixel passing a selected color;
c) a display device that has an array of pixels, the number of pixels corresponding in number to the number of subpixels of the filter, wherein each pixel is individually energizable, the display device positioned adjacent to said filter; and
d) a controller for controlling the display device.
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Accused Products
Abstract
A projection apparatus provides a projection engine that supplies polarized light to a dielectric filter (or diffraction grating). The dielectric filter provides an array of pixels that each pass selected colors of light and reflect other colors. Each pixel is subpixelated (for example, red, green, and blue subpixels) so that a single subpixel passes a selected color (for example, red) and reflects the other colors (for example, green and blue). A digital micromirror device has an array of mirrors that correspond in number to the number of subpixels of the dielectric filter. Each of the mirrors provide "on" and "off" positions for selectively transmitting a desired color of light from the mirror to an image screen. The image screen receives light reflected by selected of the mirrors of the array of micromirrors when the selected mirrors are in the "on" position. The micromirror device can be controlled with a computer, television, signal, video signal, or the like.
106 Citations
23 Claims
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1. A projection apparatus comprising:
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a) a light source; b) a filter that has an array of pixels that each pass selected colors of light and reflect other colors, each pixel being subpixelated so that a single pixel passes selected light rays for selected colors, each subpixel passing a selected color; c) a display device that has an array of pixels, the number of pixels corresponding in number to the number of subpixels of the filter, wherein each pixel is individually energizable, the display device positioned adjacent to said filter; and d) a controller for controlling the display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification