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公开(公告)号：US10684531B1
公开(公告)日：2020-06-16
申请号：US16283229
申请日：2019-02-22
Applicant: Analog Devices, Inc.
Inventor： Michael Ziemkiewicz , Tyler Adam Dunn , Michael Howard Anderson , Scott Robert Davis
Abstract: A light beam can be steered using a non-mechanical beam steerer structure. For example, a combination of sub-aperture and full-aperture beam steering structures can be used (e.g., corresponding to regions of controlled variation in an index of refraction). The sub-aperture elements can include tapered structures defining a saw-tooth or triangular footprint in the plane in which the in-plane steering is performed. Respective rows of sub-aperture tapered structures can be configured to controllably steer the light beam in the first in-plane direction, wherein at least one row of sub-aperture tapered structures defines a first base region edge that is tipped at a first specified in-plane angle relative to a second base region edge defined by another row. Use of the tipped configuration can simplify a configuration of the beam steerer structure, such as allowing a configuration lacking a compensation plate at the input.
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公开(公告)号：US20180292727A1
公开(公告)日：2018-10-11
申请号：US15479999
申请日：2017-04-05
Applicant: Analog Devices, Inc.
Inventor： Michael Ziemkiewicz , Scott R. Davis , Michael H. Anderson , Tyler Adam Dunn
IPC: G02F1/295
CPC classification number: G02F1/295 , G02F2201/06 , G02F2201/16 , G02F2203/24
Abstract: The present subject matter includes apparatus and techniques that can be used to reduce losses in systems that perform steering of a light beam. Such steering can be performed in a non-mechanical manner, such as using an electrically-controlled optical structure (e.g., an electro-optical structure). For example, a waveguide can be used to adjust an angle of a light beam (e.g., steer the light beam). The waveguide can include a core, a cladding including an electro-optic material, and electrodes defining an arrangement that, when selectively energized, adjusts an index of refraction of the electro-optic material. In particular, electrode arrangements as described herein can be used to reduce losses, such as losses that would occur due to diffraction.
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公开(公告)号：US10120261B2
公开(公告)日：2018-11-06
申请号：US15479999
申请日：2017-04-05
Applicant: Analog Devices, Inc.
Inventor： Michael Ziemkiewicz , Scott Robert Davis , Michael Howard Anderson , Tyler Adam Dunn
Abstract: The present subject matter includes apparatus and techniques that can be used to reduce losses in systems that perform steering of a light beam. Such steering can be performed in a non-mechanical manner, such as using an electrically-controlled optical structure (e.g., an electro-optical structure). For example, a waveguide can be used to adjust an angle of a light beam (e.g., steer the light beam). The waveguide can include a core, a cladding including an electro-optic material, and electrodes defining an arrangement that, when selectively energized, adjusts an index of refraction of the electro-optic material. In particular, electrode arrangements as described herein can be used to reduce losses, such as losses that would occur due to diffraction.
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公开(公告)号：US09983355B1
公开(公告)日：2018-05-29
申请号：US15685605
申请日：2017-08-24
Applicant: Analog Devices, Inc.
Inventor： Scott Robert Davis , Shrenik Deliwala , Michael Ziemkiewicz , Derek Gann , Andrew William Sparks , Michael Howard Anderson
CPC classification number: G02B6/262 , G02B6/26 , G02B6/27 , G02B6/2713 , G02B6/35 , G02B6/3536 , G02F1/365
Abstract: An optical coupler can be provided for coupling a light beam into a waveguide. The optical coupler can include a stepped structure, such as to reduce difficulties during manufacture, reduce expenses associated with manufacture, and additionally, to provide an increased acceptance angle of the optical coupler. The waveguide can include a guiding region where a cladding thickness can be increased relative to a coupling region, such as to reduce losses due to evanescent outcoupling in the guiding region.
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公开(公告)号：US11681199B2
公开(公告)日：2023-06-20
申请号：US16543060
申请日：2019-08-16
Applicant: Analog Devices, Inc.
Inventor： Michael Ziemkiewicz , Scott Robert Davis , Michael Howard Anderson , Bennett Sodergren , Radhika Marathe
CPC classification number: G02F1/313 , G01S7/4817 , G01S17/08 , G02B6/00 , G02B6/0001 , G02F1/011 , G02F1/1326 , G02F2/004 , G02F2203/24
Abstract: An optical system for receiving light scanned from different light origination locations in space can include a Liquid Crystal (LC) waveguide (LCW), including first and second LCW light ports. A beamsteering LC electrode can be included in or coupled to the LCW and can be configured to vary a receiving direction of light received at the second LCW light port in response to a varying electrical input signal applied to the LC electrode to scan receiving of light at the second LCW light port from different light origination locations in space. A photodetector can be optically coupled to the first LCW light port, such as to detect waveguided light from different light origination locations in space received in response to the varying electrical input signal applied to the first LC electrode. Ranger, bright-spot locking, laser detection, direct detect and coherent lidar, wavelength detection, and other techniques and use cases are possible.
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Patent Agency Ranking
公开(公告)号：US11169426B2
公开(公告)日：2021-11-09
申请号：US16358529
申请日：2019-03-19
Applicant: Analog Devices, Inc.
Inventor： Michael Ziemkiewicz , Michael Howard Anderson , Tyler Adam Dunn , David Edward Fish , Scott Dennis Rommel , Andrew William Sparks , Scott Robert Davis
IPC: G02F1/295
Abstract: A Liquid Crystal Waveguide (LCW) system can provide sub-aperture incoupling or outcoupling of light having an input wavelength and input beamsize defining an aperture characteristic of the system. A Liquid Crystal Waveguide (LCW) can include a generally planar LCW core to receive light via a light input zone for communication toward a light output zone. Sub-aperture interfacial light couplers can be planarly arranged in or parallel to the planar LCW core in the light input zone or the light output zone. Sub-aperture interfacial light couplers can include teeth, prisms, or facets, a photonic crystal metasurface, or a geometric-phased holograph (GPH)). Overall LCW thickness can be reduced, which can be helpful in space-limited applications or for reducing material costs.
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公开(公告)号：US10133083B1
公开(公告)日：2018-11-20
申请号：US15678741
申请日：2017-08-16
Applicant: Analog Devices, Inc.
Inventor： Michael Ziemkiewicz , Michael Howard Anderson , Scott Robert Davis , Benjamin Luey , Tyler Adam Dunn
Abstract: A non-mechanical beamsteerer can be provided to adjust an angle of a light beam, such as to scan the light beam over a field of regard. The non-mechanical beamsteerer can include a first collection of steering elements that are smaller than a size of a light beam. The first collection of steering elements can adjust the angle of the light beam by diffracting the light beam. The non-mechanical beamsteerer can also include a second collection of steering elements that are larger than a size of the light beam. The second collection of steering elements can adjust an angle of the light beam by refracting the light beam. The non-mechanical beamsteerer can operate without a compensation plate, such as to provide a reduced size of the beamsteerer and an increased acceptance angle of the beamsteerer.
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公开(公告)号：US11378689B2
公开(公告)日：2022-07-05
申请号：US16793505
申请日：2020-02-18
Applicant: Analog Devices, Inc.
Inventor： Tyler Adam Dunn , Andrew William Sparks , Michael Ziemkiewicz , Miles R. Bennett
IPC: G01C3/08 , G01S17/34 , G01S7/4914 , G01S7/4911
Abstract: A light detection and ranging (LIDAR) system comprises a laser diode; a laser diode driver circuit configured generate a laser beam using the laser diode and to frequency chirp the generated laser beam according to a frequency chirp period; a laser splitter to split the generated laser beam into N transmit laser beams pointed at different angles, wherein N is an integer greater than one, and a frequency chirp period of each of the N transmit laser beams is the frequency chirp period of the generated laser beam; and multiple return beam paths to receive N return beams and determine time of flight values for the N return beams in parallel.
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公开(公告)号：US20210278741A1
公开(公告)日：2021-09-09
申请号：US16543060
申请日：2019-08-16
Applicant: Analog Devices, Inc.
Inventor： Michael Ziemkiewicz , Scott Robert Davis , Michael Howard Anderson , Bennett Sodergren , Radhika Marathe
Abstract: An optical system for receiving light scanned from different light origination locations in space can include a Liquid Crystal (LC) waveguide (LCW), including first and second LCW light ports. A beamsteering LC electrode can be included in or coupled to the LCW and can be configured to vary a receiving direction of light received at the second LCW light port in response to a varying electrical input signal applied to the LC electrode to scan receiving of light at the second LCW light port from different light origination locations in space. A photodetector can be optically coupled to the first LCW light port, such as to detect waveguided light from different light origination locations in space received in response to the varying electrical input signal applied to the first LC electrode. Ranger, bright-spot locking, laser detection, direct detect and coherent lidar, wavelength detection, and other techniques and use cases are possible.
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公开(公告)号：US20210255324A1
公开(公告)日：2021-08-19
申请号：US16793505
申请日：2020-02-18
Applicant: Analog Devices, Inc.
Inventor： Tyler Adam Dunn , Andrew William Sparks , Michael Ziemkiewicz , Miles R. Bennett
IPC: G01S17/34 , G01S7/4911 , G01S7/4914
Abstract: A light detection and ranging (LIDAR) system comprises a laser diode; a laser diode driver circuit configured generate a laser beam using the laser diode and to frequency chirp the generated laser beam according to a frequency chirp period; a laser splitter to split the generated laser beam into N transmit laser beams pointed at different angles, wherein N is an integer greater than one, and a frequency chirp period of each of the N transmit laser beams is the frequency chirp period of the generated laser beam; and multiple return beam paths to receive N return beams and determine time of flight values for the N return beams in parallel.
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