Patent ID: 11899135
Assignee: LG INNOTEK CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. An optical device comprising:
a beam transmitter configured to generate a first beam for photographing a certain area;
a beam receiver configured to sense a second beam returning from the certain area;
a beam splitter configured to separately transmit the first beam and the second beam; and
a detector configured to change the optical axis of the first beam by a first steering angle, transmit the first beam having the changed optical axis and receive the second beam; and
a quarter-wave plate (QWP) positioned between the beam splitter and the detector to prevent scattering of the first beam and the second beam,
wherein the beam transmitter comprises:
a collimation lens for collimating the first beam transferred from a light source device; and
an optical phase array for dispersing the collimated first beam to generate the first beam.