US 11,914,231 B2
Lens, lens blank, and eyewear
Eiichiro Hikosaka, Nagoya (JP); Yoshinobu Okada, Niihama (JP); and Akifumi Aono, Nagoya (JP)
Assigned to Mitsui Chemicals, Inc., Tokyo (JP)
Appl. No. 17/280,205
Filed by Mitsui Chemicals, Inc., Tokyo (JP)
PCT Filed Sep. 26, 2019, PCT No. PCT/JP2019/037935
§ 371(c)(1), (2) Date Mar. 26, 2021,
PCT Pub. No. WO2020/067329, PCT Pub. Date Apr. 20, 2020.
Claims priority of application No. 2018-185321 (JP), filed on Sep. 28, 2018.
Prior Publication US 2021/0341759 A1, Nov. 4, 2021
Int. Cl. G02C 7/08 (2006.01); G02C 7/06 (2006.01)
CPC G02C 7/083 (2013.01) [G02C 7/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A lens, comprising:
a first substrate which is transparent;
a second substrate provided so as to face the first substrate in a thickness direction of the first substrate, the second substrate being transparent;
a first optical property changeable portion that is provided between the first substrate and the second substrate, wherein an optical property of the first optical property changeable portion is changed by electrical control; and
a second optical property changeable portion provided between the first substrate and the second substrate and provided so as to be shifted from the first optical property changeable portion in the thickness direction, wherein an optical property of the second optical property changeable portion is changed by electrical control.