Invention Grant
- Patent Title: Laser illumination on phosphor for projection display
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Application No.: US14854260Application Date: 2015-09-15
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Publication No.: US09759991B2Publication Date: 2017-09-12
- Inventor: Zhongyan Sheng
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Michael A. Davis, Jr.; Charles A. Brill; Frank D. Cimino
- Main IPC: G03B21/20
- IPC: G03B21/20 ; G03B33/08

Abstract:
An embodiment of an apparatus for image projection includes a laser providing a first color light, a plurality of dichroic polarizing beam splitters (DPBSs), a plurality of switchable half-wave plates paired with a respective DPBS and positioned between the laser and the respective DPBS, a quarter-wave plate backed by a mirror and positioned to receive a first beam from a respective DPBS, and a plurality of static phosphor devices that are each positioned to receive either the first beam or the second beam from a respective DPBS and to emit light in a respective color. The emitted light from the phosphor devices and the beam that is reflected from the mirror are directed towards an output by one or more respective DPBSs. A method switches the switchable half-wave plates as necessary to provide separate images in a plurality of colors.
Public/Granted literature
- US20160077419A1 LASER ILLUMINATION ON PHOSPHOR FOR PROJECTION DISPLAY Public/Granted day:2016-03-17
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