US Patent 7188955 Projection optical system
Patent 7188955 was granted and assigned to LG on March, 2007 by the United States Patent and Trademark Office.
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Patent Inventor Names
Ho Joong Kang0
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Patent abstract
A reflective lighting optical system minimizes a back focusing distance and a depth of the system, and improves a lighting efficiency by disposing a wire grid type PBS (Polarized Beam Splitter) at an oblique angle with respect to a short side of an imager.
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US Patent 07188955 Projection optical system US Patent 7188955 Projection optical system
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Patent Number
071889550
Patent Number
71889550
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Current Assignee
0
Patent Jurisdiction
Patent Number
071889550
Date of Patent
March 13, 2007
0Patent Application Number
108444510
Date Filed
May 13, 2004
0Official Website
Patent Primary Examiner
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US Patent 07188955 Projection optical system
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07188955
Date of patent
March 13, 2007
Patent application number
10844451
Date Filed
May 13, 2004
Patent primary examiner
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