公开(公告)号：US20240201343A1

公开(公告)日：2024-06-20

申请号：US18556030

申请日：2021-04-21

Applicant: Ommatidia LIDAR S.L.

Inventor： Eduardo Margallo Balbás ,  José Luis Rubio Guivernau

IPC: G01S7/4913 ,  G01S7/493 ,  G01S17/50 ,  G01S17/89

CPC classification number: G01S7/4913 ,  G01S7/493 ,  G01S17/50 ,  G01S17/89

Abstract: A LIDAR system which reduces or suppress the frequency shift induced by the movement of objects in a scene relative to the LIDAR, and which comprises a light source, an input aperture (101), a splitter (2) configured to split a reflected light into a reference channel (4) and a first imaging channel (3), a first imaging optical IQ receiver (5) configured to obtain a first interference signal, a reference optical IQ receiver (6) configured to obtain a reference interference signal, an imaging oscillator (111), configured to be temporarily coherent with the reflected light, at least a mixer (12), connected to the first imaging optical IQ (5) and to the reference optical IQ (6) and configured to obtain a first intermodulation product with a higher frequency and an intermodulation product of interest with its Doppler Shift scaled.

公开(公告)号：US20230288638A1

公开(公告)日：2023-09-14

申请号：US18016788

申请日：2021-07-19

Applicant: Ommatidia LIDAR S.L.

Inventor： Eduardo Margallo Balbás ,  José Luis Rubio Guivernau

IPC: G02B6/26 ,  G02B6/293 ,  G02F1/01 ,  G02B6/32

CPC classification number: G02B6/262 ,  G02B6/29317 ,  G02F1/0115 ,  G02B6/32

Abstract: Multi-directional optical devices are disclosed. The optical device may employ a multiple input/multiple output optical coupling structure to determine propagation direction of received light (in receiver configuration), and/or control the propagation direction of transmitted light (in transmitter configuration). Propagation direction can be determined without the need for moving parts. In accordance with some embodiments, designs of solid-state photonic integrated circuits (PICs) are disclosed herein that utilize N×M star couplers to perform Fourier transformations to light traversing between the N ports and M ports such that light arriving at one or more of the N ports is distributed with a linear phase profile across the M ports. The slope of the linear phase profile is dependent on which of the N ports that light was received from. The light exits from waveguides coupled to the M ports at one or more propagation directions dependent on the linear phase profile.