US 12,332,426 B2
Beam steering device
Hyungseok Bang, Seoul (KR); Seonghong Park, Seoul (KR); Sangchul Lee, Seoul (KR); and Chaedeok Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/630,300
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jul. 31, 2019, PCT No. PCT/KR2019/009537
§ 371(c)(1), (2) Date Jan. 26, 2022,
PCT Pub. No. WO2021/020622, PCT Pub. Date Feb. 4, 2021.
Prior Publication US 2022/0269066 A1, Aug. 25, 2022
Int. Cl. G02B 26/06 (2006.01); G02B 26/08 (2006.01); G02B 27/30 (2006.01)
CPC G02B 26/06 (2013.01) [G02B 26/0825 (2013.01); G02B 27/30 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A beam steering device, comprising:
a light source device irradiating parallel light; and
a phase control array controlling a reflection angle of the parallel light irradiated from the light source device,
wherein the phase control array includes:
a plurality of cells in a region thereof having the parallel light irradiated thereto, and
a common electrode provided to one end of each of the plurality of the cells and covering at least a portion of a front surface of the plurality of cells,
wherein the phase control array controls the reflection angle of the parallel light by individually controlling a phase of a portion of the light reflected by each of a plurality of the cells,
wherein the plurality of cells include:
a first cell; and
a second cell located by being spaced apart from the first cell, and
wherein the common electrode covers both at least a portion of a front surface of the first cell and at least a portion of a front surface of the second cell.