Light detection and ranging device
AssigneeLG Innotek Co., Ltd.
InventorsChang Hyuck Lee, Young Seop Moon
Life of this patent
Estimating the term…
Abstract
An optical device provided by the present invention can comprise: a light transmitting unit for generating a first beam for photographing a certain area; a light receiving unit for sensing a second beam returning from the certain area; a light separating unit for distinguishing and transmitting the first beam from the second beam; and a detection unit including a micro electro-mechanical system mirror (MEMS mirror) for transmitting the first beam by changing an optical axis up to a first steering angle, and for receiving the second beam.
Claims19
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;
- 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;
- a quarter-wave plate (QWP) positioned between the beam splitter and the detector to prevent scattering of the first beam and the second beam;
- and
- a reflector positioned between the QWP and the beam splitter.
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.
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;
- 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 lens assembly including one or more lenses and a mirror and for readjusting the steering angle in the range of 0 to ±100 degrees,
- wherein the beam splitter includes an aperture formed at the center of the beam splitter for passing the first beam through the beam splitter.
Dependencies are inferred from the claim text.