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. 15, 2010
Filed:
Jan. 19, 2007
Yoshiharu Ooi, Tokyo, JP;
Takuji Nomura, Koriyama, JP;
Toshimasa Kakiuchi, Koriyama, JP;
Mitsuo Oosawa, Koriyama, JP;
Yuzuru Tanabe, Tokyo, JP;
Yoshiharu Ooi, Tokyo, JP;
Takuji Nomura, Koriyama, JP;
Toshimasa Kakiuchi, Koriyama, JP;
Mitsuo Oosawa, Koriyama, JP;
Yuzuru Tanabe, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A liquid crystal lens element is provided, which does not produce change of transmission wavefront regardless of polarization state of incident light when it is off-state at a time of no voltage application, and which exhibits concave lens function for extraordinarily polarized incident light when it is on-state at a time of voltage application. In a liquid crystal lens elementcomprising a pair of transparent substratesandand a liquid crystal layersandwiched between the transparent substrates, which is configured to change convergent point of light transmitted through the element according to the magnitude of voltage applied to the liquid crystal layerthe liquid crystal lens elementfurther comprises a Fresnel lenshaving a concave-convex-shaped cross section formed on the transparent substrate, a first transparent electrodeformed on a flat surface of the transparent substrateon which the Fresnel lensis formed, and a second transparent electrodeformed on a flat surface of the other transparent substrate