The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2011
Filed:
Nov. 11, 2009
Applicants:
Taiki Sawabe, Ota-ku, JP;
Keiji Nomaru, Ota-ku, JP;
Inventors:
Taiki Sawabe, Ota-ku, JP;
Keiji Nomaru, Ota-ku, JP;
Assignee:
Disco Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
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.