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Title:
VARIFOCAL LENS AND CONTROL METHOD OF VARIFOCAL LENS
Document Type and Number:
WIPO Patent Application WO/2022/163240
Kind Code:
A1
Abstract:
A varifocal gel lens 1 comprising an annular ultrasonic transducer 3, a transparent and elastic lens 4, and a drive unit 5 that applies an electric signal to the ultrasonic transducer 3 to generate an ultrasonic wave is characterized in that the ultrasonic transducer 3 includes four electrodes 31 to 34 divided into N in the circumferential direction, and the drive unit 5 has a traveling wave mode in which electric signals of different phases that increase or decrease in the circumferential direction are applied to the four electrodes 31 to 34 and an ultrasonic wave propagating in the circumferential direction of the lens 4 is generated to raise a peripheral portion of the lens 4.

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Inventors:
KOYAMA DAISUKE (JP)
SAKATA DAIKO (JP)
Application Number:
PCT/JP2021/047799
Publication Date:
August 04, 2022
Filing Date:
December 23, 2021
Export Citation:
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Assignee:
THE DOSHISHA (JP)
International Classes:
G02B26/00; G02B3/10; G02C7/06
Foreign References:
JP2018106127A2018-07-05
JP2020201396A2020-12-17
JP2013142867A2013-07-22
US20150268333A12015-09-24
Attorney, Agent or Firm:
MINORI PATENT PROFESSION CORPORATION (JP)
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