US Patent 7441909 Optical assembly for a projection system
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Patent Inventor Names
Brett E. Dahlgren0
James W. Ring0
Scott Lerner0
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Patent abstract
An optical assembly for a projection system includes an objective lens and a retro-focus lens. Then objective lens and retro-focus lens share one or more lens elements. A method of projecting an image comprises directing light from a light source to one or more modulators and projecting a modulated light beam using an optical assembly that includes an objective lens and a retro-focus lens that share one or more lens elements.
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US Patent 07441909 Optical assembly for a projection system US Patent 7441909 Optical assembly for a projection system
Infobox
Patent Number
074419090
Patent Number
74419090
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Patent Jurisdiction
Patent Number
074419090
Date of Patent
October 28, 2008
0Patent Application Number
110403470
Date Filed
January 20, 2005
0Official Website
Patent Primary Examiner
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US Patent 07441909 Optical assembly for a projection system
Infobox
Is a
Patent jurisdiction
Patent number
07441909
Date of patent
October 28, 2008
Patent application number
11040347
Date Filed
January 20, 2005
Patent primary examiner
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