Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Scott Lerner0
Brett E. Dahlgren0
James W. Ring0
Date of Patent
October 28, 2008
0Patent Application Number
110403470
Date Filed
January 20, 2005
0Patent Primary Examiner
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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