公开(公告)号：US10670721B2

公开(公告)日：2020-06-02

申请号：US15609788

申请日：2017-05-31

Applicant: HRL Laboratories, LLC

Inventor： Oleg M. Efimov

IPC: G01S17/34 ,  G01S17/58 ,  H04B10/00 ,  G01R31/28 ,  H04L27/10 ,  H04L27/144 ,  G01S7/481 ,  G01S7/4912 ,  G01R35/00

Abstract: A lidar including a laser having a first frequency-modulated laser radiation and a second frequency-modulated laser radiation, a first waveguide coupled to the laser, wherein the first frequency-modulated laser radiation and the second frequency-modulated laser radiation are transmitted by the laser into the first waveguide, a second waveguide, a filter coupled between the first waveguide and the second waveguide, wherein the filter is configured to couple and pass the first frequency-modulated laser radiation through the filter to the second waveguide, and is configured to not couple or pass the second frequency-modulated laser radiation through the filter to the second waveguide, and a photodetector coupled to the second waveguide.

公开(公告)号：US10198790B1

公开(公告)日：2019-02-05

申请号：US15213228

申请日：2016-07-18

Applicant: HRL Laboratories, LLC

Inventor： Yuri Owechko ,  Daniel Yap ,  Oleg M. Efimov

IPC: G06T3/40 ,  G02B17/00 ,  G02B26/08 ,  G02B27/10 ,  G06T1/00 ,  H04N5/262 ,  G06T7/00

Abstract: Described in this disclosure is a space-variant Multi-domain Foveated Compressive Sensing (MFCS) system for adaptive imaging with variable resolution in spatial, polarization, and spectral domains simultaneously and with very low latency between multiple adaptable regions of interest (ROIs) across the field of view (FOV). The MFCS system combines space-variant foveated compressive sensing (FCS) imaging covered by a previous disclosure with a unique dual-path high efficiency optical architecture for parallel multi-domain compressive sensing (CS) processing. A single programmable Digital Micromirror Device (DMD) micro-mirror array is used at the input aperture to adaptively define and vary the resolution of multiple variable-sized ROIs across the FOV, encode the light for CS reconstruction, and adaptively divide the input light among multiple optical paths using complementary measurement codes, which can then be reconstructed as desired.

公开(公告)号：US09941661B1

公开(公告)日：2018-04-10

申请号：US14596960

申请日：2015-01-14

Applicant: HRL LABORATORIES LLC

Inventor： Oleg M. Efimov ,  Keyvan R. Sayyah

IPC: H01S5/068 ,  H01S5/42 ,  H01S5/0687 ,  H01S5/40 ,  H01S5/00 ,  G02B27/28

CPC classification number: H01S5/0687 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/4006 ,  H01S5/423

Abstract: A system for maintaining the locking range of an injection locked laser array within range of a frequency of a master laser includes first and second photodetectors. An injection locked laser array has a locking frequency range around a free running frequency controlled in response to a control signal. The laser array produces respective beams phase modulated at relative unique frequencies. A mask, has apertures with shapes, sizes, and positions identical to the shapes, sizes and positions of the lasers in the laser array. A first master laser produces a beam at a first frequency coupled to the laser array and illuminating the mask. A second master laser produces a beam at a second frequency separated from the first frequency by substantially the locking range of the laser array coupled to the laser array and illuminating the mask. Optics forms images of the reference beams of the first and second master lasers from the mask to the first and second photodetectors respectively, and forms images of the beams from the laser array to the same locations on the first and second photodetectors as the corresponding reference beams from the mask, A frequency controller, responsive to respective composite signals from the first and second photodetectors, detects modulation harmonics corresponding to each beam from the laser array from the first and second photodetectors and produces a frequency control signal.

公开(公告)号：US20190235163A1

公开(公告)日：2019-08-01

申请号：US16185855

申请日：2018-11-09

Applicant: HRL LABORATORIES, LLC

Inventor： Pamela R. Patterson ,  Raymond Sarkissian ,  Biqin Huang ,  Keyvan R. Sayyah ,  Oleg M. Efimov

IPC: G02B6/122 ,  G02F1/025 ,  G02B6/136

CPC classification number: G02B6/122 ,  G02B6/12004 ,  G02B6/1228 ,  G02B6/136 ,  G02B6/14 ,  G02B2006/12061 ,  G02F1/025

Abstract: A method of manufacturing an optical waveguide includes: aligning a silicon on insulator wafer and a target substrate, the target substrate including a benzocyclobutene layer; bonding a silicon layer of the silicon on insulator wafer with the benzocyclobutene layer of the target substrate by using heat and pressure; and removing the silicon on insulator wafer such that the silicon layer remains on the benzocyclobutene layer.