US 11,815,604 B2
Passive nano-antenna array receiver and three-dimensional imaging system
Zhongxiang Zhang, Shenzhen (CN)
Assigned to SHENZHEN LITRA TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 16/959,403
Filed by SHENZHEN LITRA TECHNOLOGY CO., LTD, Shenzhen (CN)
PCT Filed May 27, 2020, PCT No. PCT/CN2020/092576
§ 371(c)(1), (2) Date Jun. 30, 2020,
PCT Pub. No. WO2021/237506, PCT Pub. Date Dec. 2, 2021.
Prior Publication US 2023/0137561 A1, May 4, 2023
Int. Cl. G01S 17/89 (2020.01); G01S 7/481 (2006.01)
CPC G01S 17/89 (2013.01) [G01S 7/481 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A passive nano-antenna array receiver, comprising a receiving lens, a passive nano-antenna array at a receiving end, a focusing lens assembly, and an optical receiver; wherein
the receiving lens is configured to receive incident light and focus the incident light to the passive nano-antenna array at the receiving end;
the passive nano-antenna array is configured to deflect an angle of a light beam output by the receiving lens, and transmit outgoing light generated after an angle deflection to the focusing lens assembly, wherein an optical axis of the outgoing light is perpendicular to the passive nano-antenna array;
the focusing lens assembly is configured to focus an outgoing light output by the passive nano-antenna array to the optical receiver; and
the optical receiver is configured to convert a received optical signal into an electrical signal.