Title:
VARIABLE ND FILTER
Document Type and Number:
WIPO Patent Application WO/2021/220583
Kind Code:
A1
Abstract:
A variable ND filter 1 according to one embodiment is provided with a first transparent electrode 2, a second transparent electrode 3 facing the first transparent electrode 2 with a space S therebetween, an electrolytic solution 4 stored in the space S, and a drive circuit 5 for applying voltage to the first transparent electrode 2 and the second transparent electrode 3. Respective interfaces 2b, 3b with the electrolytic solution 4 of the first transparent electrode 2 and the second transparent electrode 3 have a flat shape. The first transparent electrode 2 and/or the second transparent electrode 3 comprises an FTO film that transmits achromatic light.
Inventors:
MOCHIZUKA TAKUO (JP)
Application Number:
PCT/JP2021/005492
Publication Date:
November 04, 2021
Filing Date:
February 15, 2021
Export Citation:
Assignee:
MURAKAMI CORP (JP)
International Classes:
G02F1/1523; G02F1/1506; G09F9/30
Domestic Patent References:
| WO2015093298A1 | 2015-06-25 | |||
| WO2012118188A2 | 2012-09-07 |
Foreign References:
| JP2019144330A | 2019-08-29 | |||
| JP2012203188A | 2012-10-22 | |||
| JP2018180351A | 2018-11-15 | |||
| JP2015082082A | 2015-04-27 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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