US 12,422,717 B2
Optical element
Kojiro Ikeda, Tokyo (JP); and Takeo Koito, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on May 22, 2024, as Appl. No. 18/671,439.
Application 18/671,439 is a continuation of application No. PCT/JP2022/037414, filed on Oct. 6, 2022.
Claims priority of application No. 2021-191218 (JP), filed on Nov. 25, 2021.
Prior Publication US 2024/0310679 A1, Sep. 19, 2024
Int. Cl. G02F 1/1343 (2006.01); G02F 1/1347 (2006.01)
CPC G02F 1/134381 (2021.01) [G02F 1/13439 (2013.01); G02F 1/1347 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical element comprising a first liquid crystal cell, a second liquid crystal cell, a third liquid crystal cell, and a fourth liquid crystal cell stacked in sequence, the first liquid crystal cell, the second liquid crystal cell, the third liquid crystal cell, and the fourth liquid crystal cell each comprising:
a first substrate on which a first transparent electrode and a second transparent electrode each extending in a direction having a first angle with respect to a first direction are alternately arranged in a second direction orthogonal to the first direction;
a second substrate on which a third transparent electrode and a fourth transparent electrode each extending in a direction having a second angle with respect to the second direction are alternately arranged in the first direction; and
a liquid crystal layer between the first substrate and the second substrate,
wherein the first angle is different from the second angle.