公开(公告)号：US20210063839A1

公开(公告)日：2021-03-04

申请号：US17095351

申请日：2020-11-11

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Masaki KOYAMA

IPC: G02F1/29

Abstract: An optical deflection apparatus includes a deflection element and an incidence plane limiting unit limiting incidence of a laser beam on a range of an incidence plane. The deflection element including first and second panels, which including first and second repeating units. Each panel includes first and second substrates, a liquid crystal layer, an electrode for each repeating unit, and a common electrode. The electrodes of the first and second panel in a same repeating unit include first ends coinciding with each other, and second ends different from each other. The range is included in a range from the second end of the first electrode of the first panel in the first repeating unit to the second end of the first electrode of the second panel in the second repeating unit.