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:
Jan. 11, 2022
Filed:
May. 18, 2018
Applicant:
Kent State University, Kent, OH (US);
Inventors:
Assignee:
KENT STATE UNIVERSITY, Kent, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/29 (2006.01);
U.S. Cl.
CPC ...
G02F 1/29 (2013.01); G02F 1/294 (2021.01);
Abstract
Liquid crystal lenses of different apertures with suppressed chromatic aberration utilizing twisted vertical alignment configuration are demonstrated. A plurality of substrates are provided with electrodes, including a patterned electrode to generate a lens effect. The liquid crystal material is homeotropically aligned, such as via alignment layers. Setting the ratio between cell thickness and chiral pitch of the cholesteric liquid crystals provides correction of axial chromatic aberrations of electrically-tunable focal lengths in the device.