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:
Sep. 15, 2015
Filed:
May. 02, 2013
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Masako Kashiwagi, Kanagawa-ken, JP;
Shinichi Uehara, Tokyo, JP;
Ayako Takagi, Kanagawa-ken, JP;
Yoshiharu Momonoi, Kanagawa-ken, JP;
Masahiro Baba, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A liquid crystal optical device includes a liquid crystal optical unit and a drive unit. The liquid crystal optical unit includes a first substrate unit, a second substrate unit, and a liquid crystal layer. The first substrate unit includes a first substrate, a plurality of first electrodes, and a second electrode. The second substrate unit includes a second substrate and a first opposing electrode. The drive unit applies a first voltage between the first opposing electrode and the first electrodes and applies a second voltage between the first opposing electrode and the second electrode in a refractive index distribution forming operation. The drive unit applies a third voltage between the first opposing electrode and the first electrodes and applies a fourth voltage between the first opposing electrode and the second electrode in a first preliminary operation prior to the refractive index distribution forming operation.