US 12,265,311 B2
Electro-optical device
Takashi Sakamoto, Tokyo (JP); Yuichi Akage, Tokyo (JP); Masahiro Ueno, Tokyo (JP); Sohan Kawamura, Tokyo (JP); and Soichi Oka, Tokyo (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/918,721
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Apr. 16, 2020, PCT No. PCT/JP2020/016788
§ 371(c)(1), (2) Date Oct. 13, 2022,
PCT Pub. No. WO2021/210145, PCT Pub. Date Oct. 21, 2021.
Prior Publication US 2023/0236470 A1, Jul. 27, 2023
Int. Cl. G02F 1/29 (2006.01); G02F 1/03 (2006.01)
CPC G02F 1/29 (2013.01) [G02F 1/0327 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electro-optical device comprising:
an electro-optic crystal configured to produce an electro-optic effect when incident light is incident thereon; and
a voltage-applying mechanism configured to apply a voltage to the electro-optic crystal, wherein the electro-optic crystal is arranged such that the incident light is made incident on an incident surface of the electro-optic crystal at an acute incident angle, and wherein a rotation axis of the acute incident angle of the incident light is parallel to a direction of an electric field generated by the voltage-applying mechanism;
wherein the incident light is configured to have power that causes breakage of the electro-optic crystal when the incident light is incident on the incident surface at an incident angle which is a predetermined incident angle or less; and
the incident light is configured to be made incident on the incident surface at an incident angle greater than an incident angle at which breakage of the electro-optic crystal is caused.