公开(公告)号：US12013495B2

公开(公告)日：2024-06-18

申请号：US18050789

申请日：2022-10-28

Applicant: Lumentum Operations LLC

Inventor： Srikanth Ramakrishnan ,  Jimmy Zheng

IPC: G01S7/48 ,  G01S7/484 ,  G01S7/4863 ,  G01S7/4913 ,  G01S7/493 ,  H03M1/12

CPC classification number: G01S7/4863 ,  G01S7/484 ,  G01S7/4913 ,  G01S7/493 ,  H03M1/126

Abstract: A light detection and ranging (lidar) receiver may include a first photodiode, a first amplifier connected to the first photodiode, and a first analog-to-digital converter (ADC) connected to an output of the first amplifier. The lidar receiver may include a second photodiode, a second amplifier connected to the second photodiode, and a second ADC connected to the second amplifier. The lidar may include a processor connected to an output of the first ADC and an output of the second ADC and a direct-current-to-direct-current converter connected to an output of the processor and to the first photodiode and the second photodiode. The processor may determine, based on the output of the first ADC and the output of the second ADC, a first bias to apply to the first photodiode and a second bias to apply to the second photodiode.

公开(公告)号：US11486981B2

公开(公告)日：2022-11-01

申请号：US16787604

申请日：2020-02-11

Applicant: Lumentum Operations LLC

Inventor： Srikanth Ramakrishnan ,  Jimmy Zheng

IPC: G01S7/48 ,  G01S7/4863 ,  G01S7/484 ,  G01S7/4913 ,  G01S7/493 ,  H03M1/12

Abstract: A light detection and ranging (lidar) receiver may include a first photodiode, a first amplifier connected to the first photodiode, and a first analog-to-digital converter (ADC) connected to an output of the first amplifier. The lidar receiver may include a second photodiode, a second amplifier connected to the second photodiode, and a second ADC connected to the second amplifier. The lidar may include a processor connected to an output of the first ADC and an output of the second ADC and a direct-current-to-direct-current converter connected to an output of the processor and to the first photodiode and the second photodiode. The processor may determine, based on the output of the first ADC and the output of the second ADC, a first bias to apply to the first photodiode and a second bias to apply to the second photodiode.

公开(公告)号：US11486980B2

公开(公告)日：2022-11-01

申请号：US16673197

申请日：2019-11-04

Applicant: Lumentum Operations LLC

Inventor： Srikanth Ramakrishnan ,  Barrie P. Keyworth

IPC: G01C3/08 ,  G01S7/4863 ,  G01S7/484 ,  G01S7/4913 ,  G01S7/493 ,  H03M1/12

Abstract: A light detection and ranging (lidar) receiver may include a first frequency filter to pass a first range of frequencies of an analog signal. The lidar receiver may include a second frequency filter to pass a second range of frequencies of the analog signal that is different from the first range of frequencies of the analog signal. The lidar receiver may include a first analog-to-digital converter (ADC) to derive a first digital signal based on the first range of frequencies of the analog signal using a first sampling rate. The lidar receiver may include a second ADC to derive a second digital signal based on the second range of frequencies of the analog signal using a second sampling rate that is different from the first sampling rate.