US Patent 7249853 Unpolished optical element with periodic surface roughness
Patent 7249853 was granted and assigned to Eastman Kodak on July, 2007 by the United States Patent and Trademark Office.
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Patent abstract
An optical sub-system has an optical element having a curved surface featured with a plurality of recurring surface tooling marks. The depth of any surface tooling mark is less than 0.2 wavelengths, whereby light is diffracted on the curved surface. A spatial filter blocks the diffracted light and passes the undiffracted light.
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US Patent 07249853 Unpolished optical element with periodic surface roughness US Patent 7249853 Unpolished optical element with periodic surface roughness
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Patent Number
0724985300
Patent Number
724985300
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Current Assignee
Patent Jurisdiction
Patent Number
072498530
Date of Patent
July 31, 2007
0Patent Application Number
111057660
Date Filed
April 13, 2005
0Official Website
Patent Primary Examiner
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
072498530
Date of Patent
July 31, 2007
0Patent Application Number
111057660
Date Filed
April 13, 2005
0Official Website
Patent Primary Examiner
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US Patent 07249853 Unpolished optical element with periodic surface roughness
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07249853
Date of patent
July 31, 2007
Patent application number
11105766
Date Filed
April 13, 2005
Patent primary examiner
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