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:
Sep. 22, 2020
Filed:
Dec. 28, 2018
Texas Instruments Incorporated, Dallas, TX (US);
Zhongyan Sheng, Allen, TX (US);
Gregory Scott Pettitt, Sherman, TX (US);
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
In described examples, a digital light processing color projector includes light emitters configured to collectively emit light at multiple wavelengths, multiple light directing elements forming an illumination path having at least one aperture stop, a micromirror array coupled to a substrate, an aperture located at the aperture stop, and a filter with a selected color transmittance profile located at or near the aperture stop. The light directing elements are configured to direct light towards the micromirror array as illumination light. An aperture width determines a diameter of the illumination light. A micromirror on-state reflects the illumination light as on-state light. The substrate reflects the illumination light as flat-state light. The light directing elements direct on-state light through the aperture to a projector output. The filter filters flat-state light in an overlap region of the on-state light and flat-state light, or an illumination light portion corresponding to overlap region.