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:
May. 29, 2018
Filed:
Mar. 02, 2016
Kabushiki Kaisha Toshiba, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A liquid crystal lens device includes a first electrode unit, a counter electrode and a liquid crystal layer. The first electrode unit includes a first and a second electrode. The liquid crystal layer is provided between the first electrode unit and the counter electrode. A threshold voltage Vth of the liquid crystal layer, an absolute value Vof a potential difference between the first electrode and the counter electrode, a distance Pbetween a center of the first electrode and a center of the second electrode, a thickness dof the liquid crystal layer, an effective elastic constant kof the liquid crystal layer, a dielectric anisotropy Δε of the liquid crystal layer, and a dielectric constant ε0 of a vacuum satisfy1>×(1/2)/1,1<×(1/1), and(1/2)/1<ε0×(Δε/).