US 12,001,029 B2
Electrochromic element, and lens unit and imaging apparatus including the same
Kazuya Miyazaki, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 10, 2022, as Appl. No. 17/669,266.
Claims priority of application No. 2021-022450 (JP), filed on Feb. 16, 2021.
Prior Publication US 2022/0260848 A1, Aug. 18, 2022
Int. Cl. G02B 27/58 (2006.01); G02F 1/153 (2006.01); G02F 1/155 (2006.01); G03B 11/00 (2021.01); G02F 1/1514 (2019.01)
CPC G02B 27/58 (2013.01) [G02F 1/155 (2013.01); G03B 11/00 (2013.01); G02F 2001/15145 (2019.01); G02F 1/153 (2013.01); G02F 2203/48 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of assembling an electrochromic element comprising:
providing a pair of electrodes; and
providing an electrochromic layer disposed between the pair of electrodes, a shape of a light modulating region viewed from a normal direction of the electrode being circular,
wherein the pair of electrodes and the electronic layer are selected such that, when a sheet resistance of the electrode is rs (Ω), a resistance of the electrode is r (Ω), a diameter of the light modulating region is L (m), a distance between the pair of electrodes is d (m), the resistivity of the electrochromic layer is ρ (Ωm), and a resistance of the electrochromic layer is R (Ω), a resistance ratio (r/R) between the electrode and the electrochromic layer, as shown in equation (1), is 2 or more and 20 or less:

OG Complex Work Unit Math