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:
Jun. 28, 2022
Filed:
Jul. 13, 2018
Applicants:
Autocloning Technology., Ltd., Sendai, JP;
Photonic Lattice, Inc., Sendai, JP;
Inventors:
Takayuki Kawashima, Sendai, JP;
Shojiro Kawakami, Sendai, JP;
Toshikazu Ijiro, Sendai, JP;
Takafumi Chiba, Sendai, JP;
Assignee:
Photonic Lattice, Inc., Miyagi, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01); G02B 5/30 (2006.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
G02B 5/30 (2013.01); G02B 27/0172 (2013.01); G02B 27/283 (2013.01);
Abstract
An optical element has a quarter-wave plate formed on the X-Y plane and laminated in the Z-axis direction in three-dimensional space X, Y, Z. The groove in the wave plate is curved, and the angle relative to the Y-axis varies continuously in the range of 0° to 180°. The optical element separates and converts incoming circularly polarized light into light passing therethrough and circularly polarized light reversely rotating a given angle toward the X axis from the Z axis, and outputs the light.