Invention Grant
- Patent Title: Hybrid laser excited phosphor illumination apparatus and method
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Application No.: US14155009Application Date: 2014-01-14
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Publication No.: US09664892B2Publication Date: 2017-05-30
- Inventor: Philip Scott King , Gregory Scott Pettitt , Sajjad Ali Khan
- 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 ; G02B26/00 ; H04N9/31

Abstract:
Apparatus and methods are disclosed for generating blue color illumination for use in a projection system. Light from a blue laser light source is reflected off a dichroic filter sequentially onto different color emitting phosphor coated light non-transmissive segments and onto a cyan color emitting phosphor coated light transmissive segment of a rotating color wheel. The different color light and cyan color light emitted by the phosphor back to the filter is selectively transmitted by the filter along a projection path. Blue laser light and cyan color light emitted by the phosphor transmitted through the color wheel is directed along a wraparound optical path back to the filter for reflection along the projection optical path.
Public/Granted literature
- US20140253882A1 HYBRID LASER EXCITED PHOSPHOR ILLUMINATION APPARATUS AND METHOD Public/Granted day:2014-09-11
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