Patent ID: 11963394
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An optical inspection method comprising:
preparing a display device including a light emitting element which emits light, wherein the display device outputs the light in a display direction;
preparing an optical inspection device which receives the light output from the display device;
locating the optical inspection device on a front surface of the display device; and
acquiring optical information of the display device, based on the light provided from the display device,
wherein the optical inspection device includes:
a main body including a light receiving part which receives light provided thereto, wherein the light receiving part includes a polarizer having a predetermined polarizing axis, and an image processor which acquires electrical information, based on the light provided to the light receiving part;
a lens part which receives light provided from an outside, wherein the lens part provides the light provided from the outside to the light receiving part; and
a phase film part having a phase difference of about 4000 nm,
wherein the optical inspection device includes a polarizing part having an absorption axis and a transmission axis, and
wherein an angle between the predetermined polarizing axis of the polarizer and one of the absorption axis and the transmission axis is in a range of about 25 degrees to about 65 degrees.