The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1999
Filed:
Dec. 17, 1996
Mehdi Zeinali, Spring, TX (US);
Compaq Computer Corporation, Houston, TX (US);
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.