US 11,886,048 B2
Lens and eyewear
Tsuyoshi Kamibeppu, Nagoya (JP); Hirofumi Asada, Niihama (JP); Akifumi Aono, Nagoya (JP); Akihiro Muramatsu, Marugame (JP); and Toshifumi Hino, Saijo (JP)
Assigned to Mitsui Chemicals, Inc., Tokyo (JP)
Filed by Mitsui Chemicals, Inc., Tokyo (JP)
Filed on Jan. 4, 2022, as Appl. No. 17/567,976.
Application 17/567,976 is a continuation of application No. 16/474,196, granted, now 11,249,327, previously published as PCT/JP2017/036555, filed on Oct. 6, 2017.
Claims priority of application No. 2016-253581 (JP), filed on Dec. 27, 2016; application No. 2016-253582 (JP), filed on Dec. 27, 2016; and application No. 2017-037313 (JP), filed on Feb. 28, 2017.
Prior Publication US 2022/0137434 A1, May 5, 2022
Int. Cl. G02C 7/08 (2006.01)
CPC G02C 7/083 (2013.01) 16 Claims
OG exemplary drawing
 
1. A lens that includes an electroactive region where an optical characteristic changes by electric control, the lens comprising:
a first transparent substrate;
a second transparent substrate disposed facing the first transparent substrate; and
an intermediate layer disposed between the first transparent substrate and the second transparent substrate and including a mark including information,
wherein:
the first transparent substrate is disposed on a position closer to a user of the lens than the second transparent substrate in a state where the lens is in use;
the intermediate layer includes a liquid crystal layer in a position which corresponds to the electroactive region; and
the mark is placed on a position closer to the second transparent substrate than the liquid crystal layer in the thickness direction of lens.