US Patent 7978408 Polarizing device and laser unit
Patent 7978408 was granted and assigned to Disco Corporation on July, 2011 by the United States Patent and Trademark Office.
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Patent abstract
A polarizing device for converting a circularly polarized light beam into a radial polarized light beam, wherein the circularly polarized light beam is obtained by passing a linearly polarized light beam oscillated from a laser oscillator through a quarter-wave plate. The polarizing device includes an axicon lens having a conical surface and a dielectric film formed on the conical surface of the axicon lens.
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Patent Inventor Names
Keiji Nomaru0
Taiki Sawabe0
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Patent Citations Received
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US Patent 07978408 Polarizing device and laser unit US Patent 7978408 Polarizing device and laser unit
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Patent Number
079784080
Patent Number
79784080
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
079784080
Date of Patent
July 12, 2011
0Patent Application Number
126164170
Date Filed
November 11, 2009
0Patent Primary Examiner
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US Patent 07978408 Polarizing device and laser unit
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07978408
Date of patent
July 12, 2011
Patent application number
12616417
Date Filed
November 11, 2009
Patent primary examiner
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