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:
Nov. 29, 2022
Filed:
Oct. 15, 2021
Jvckenwood Corporation, Yokohama, JP;
Takashi Nagoya, Yokohama, JP;
JVCKENWOOD CORPORATION, Yokohama, JP;
Abstract
A phase modulation device includes an image data generator, a controller, a light reception signal detector, and a liquid crystal element. The image data generator generates image data. The controller generates a gradation control signal based on the image data. The liquid crystal element includes a first substrate and a light receiver. The first substrate has a pixel region in which a plurality of pixel electrodes constituting pixels are arranged. The light receiver photoelectrically converts light with which the pixel region is irradiated to generate a light reception signal. The light reception signal detector generates a drive control signal based on the light reception signal. The liquid crystal element changes an inclination angle of a wavefront of the light with which the pixel region is irradiated by applying different driving voltages to the plurality of pixel electrodes based on the gradation control signal.