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:
Apr. 20, 2010
Filed:
Mar. 02, 2007
Hideo Takezoe, Tokyo, JP;
Byoungchoo Park, Tokyo, JP;
Myoung Hoon Song, Tokyo, JP;
Jisoo Hwang, Tokyo, JP;
Takehiro Toyooka, Yokohama, JP;
Suzushi Nishimura, Yokohama, JP;
Hideo Takezoe, Tokyo, JP;
Byoungchoo Park, Tokyo, JP;
Myoung Hoon Song, Tokyo, JP;
Jisoo Hwang, Tokyo, JP;
Takehiro Toyooka, Yokohama, JP;
Suzushi Nishimura, Yokohama, JP;
Tokyo Institute of Technology, Tokyo, JP;
Nippon Oil Corporation, Tokyo, JP;
Abstract
An optical diode. A cholesteric liquid crystal (CLC) layer has a selective reflection wavelength band with a left-handed helical structure, and a phase shifter for changing a phase difference between two intrinsic polarized light components of left-handed circularly polarized light having a wavelength within the selective reflection wavelength band of the CLC layer. When left-handed circularly polarized light having a wavelength within the selective reflection wavelength band of the CLC layer is incident on the phase shifter in the optical diode, the phase shifter turns the left-handed circularly polarized light into right-handed circularly polarized light, which can be transmitted through the CLC layer. When left-handed circularly polarized light having a wavelength within the selective reflection wavelength band of the CLC layer is incident on the CLC layer, it is selectively reflected by the CLC layer.