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公开(公告)号：US20210341610A1
公开(公告)日：2021-11-04
申请号：US17369549
申请日：2021-07-07
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Shuai DONG , Xiaoping HONG , Huai HUANG
IPC: G01S17/18 , G01S7/484 , G01S7/486 , H01L31/107 , G01S7/481
Abstract: A ranging device includes a light source, a transceiver, a detector, and a light path changing element. The light source is configured to emit a light pulse. The transceiver is configured to collimate the light pulse and converge at least part of reflected light of the light pulse reflected by a detection object. The detector is configured to receive and convert the at least part of the reflected light into an electrical signal for measuring a distance between the detection object and the ranging device. The light path changing element is configured to combine emission light path and reception light path. The light path changing element includes an area configured to transmit or reflect part of the light pulse, and a reception solid angle of the area with respect to the light pulse is 20%-40% of a reception solid angle of the detector with respect to the reflected light.
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公开(公告)号：US20210293928A1
公开(公告)日：2021-09-23
申请号：US17339911
申请日：2021-06-04
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiongze MEI , Shuai DONG , Chenghui LONG , Xiaoping HONG
Abstract: A ranging apparatus includes an emitter, a scanner, a detector, and a controller. The emitter is configured to emit a light pulse sequence. The scanner is configured to change a transmission direction of the light pulse sequence to transmit in different directions in sequence to form a scan field. The detector is configured to receive a reflected light pulse sequence formed by an object reflecting the light pulse sequence and determine at least one of a distance or an orientation of the object relative to the ranging apparatus according to the reflected light pulse sequence. The controller is configured to control the emitter to emit the light pulse sequence at a first emission frequency when scanning the first region and at a second emission frequency higher than the first emission frequency when scanning the second region.
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3.发明申请公开(公告)号：US20210257815A1
公开(公告)日：2021-08-19
申请号：US17246370
申请日：2021-04-30
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang LIU , Shuai DONG , Xiaoping HONG
Abstract: A laser diode chip includes a substrate including a first surface and a second surface, and a laser diode array including at least two laser diodes formed at the substrate. Each of the at least two laser diodes includes a P electrode formed at the first surface of the substrate, an N electrode formed at the second surface of the substrate, and a light emitting region formed between the P electrode and N electrode. Adjacent N electrodes of adjacent laser diodes of the at least two laser diodes are isolated from each other.
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公开(公告)号：US20210208249A1
公开(公告)日：2021-07-08
申请号：US17194291
申请日：2021-03-07
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang LIU , Xiaoping HONG
IPC: G01S7/484 , G01S7/481 , G01S17/10 , G01S7/4861 , G01S17/933
Abstract: A laser distance measurement device includes a transmission circuit configured to emit at least two laser pulse sequences having different emission paths at different times, a receiving circuit configured to receive the at least two laser pulse sequences reflected by an object and perform photoelectric conversion on the at least two laser pulse sequences to obtain at least two electrical signals, a sampling circuit configured to sample the at least two electrical signals to obtain sampling results, and a processing circuit configured to determine a distance to the object to be detected according to the sampling results. Drive signals in the transmission circuit that correspond to the at least two laser pulse sequences share a device of the transmission circuit, and/or the at least two electrical signals share a device of the receiving circuit, a device of the sampling circuit, and/or a device of the processing circuit.
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公开(公告)号：US20230324549A1
公开(公告)日：2023-10-12
申请号：US18202309
申请日：2023-05-26
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Guoguang ZHENG , Xiaoping HONG , Mingyu WANG
CPC classification number: G01S17/10 , G01S7/4816 , G01S7/4817 , G01S7/484
Abstract: A sensor system can comprise a detector with a plurality of units, wherein the detector is configured to generate a first set of electrical signals based on received photon energy of a light beam that is reflected back from a first plurality of points on one or more objects, in a first configuration. Additionally, the detector is configured to generate a second set of electrical signals based on received photon energy of a light beam that is reflected back from a second plurality of points on one or more objects in a second configuration, wherein the first configuration and the second configuration are with a predetermined correlation. Furthermore, the detector can determine distance to each of the first plurality of points and the second plurality of points on the one or more objects based on the first set of electrical signals and the second set of electrical signals.
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Patent Agency Ranking
公开(公告)号：US20210293929A1
公开(公告)日：2021-09-23
申请号：US17339938
申请日：2021-06-04
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Shuai DONG , Chenghui LONG , Xiongze MEI , Xiaoping HONG , Fu ZHANG
Abstract: A ranging system includes a plurality of ranging apparatuses. Each of the plurality of ranging apparatuses is configured to emit a laser pulse sequence, receive a laser pulse sequence reflected by an object, and detect the object according to the laser pulse sequence emitted and the laser pulse sequence received. The two or more ranging apparatuses of the plurality of ranging apparatuses are configured to emit laser pulse sequence with different time sequences and/or to emit different laser pulse sequences.
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公开(公告)号：US20210239801A1
公开(公告)日：2021-08-05
申请号：US17214777
申请日：2021-03-26
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang LIU , Huai HUANG , Xiaoping HONG
IPC: G01S7/481
Abstract: A laser-ranging device includes an emitter, an optical assembly, a detecter, and a drive system. The emitter is configured to emit a laser pulse sequence. The an optical assembly includes a collimating lens and a converging lens. The collimating lens is configured to collimate the laser pulse sequence emitted by the emitter and emit the laser pulse sequence. The converging lens is configured to converge at least a part of return light reflected by a to-be-detected object. The detecter is configured to receive light converged by the converging lens, convert the light into an electrical signal, and determine a distance between the to-be-detected object and the laser-ranging device according to the electrical signal. The drive system is configured to drive the optical assembly to move in a plane perpendicular to an optical axis of the laser pulse sequence and/or along an optical axis direction of the optical axis.
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公开(公告)号：US20210215825A1
公开(公告)日：2021-07-15
申请号：US17216365
申请日：2021-03-29
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Huai HUANG , Jin ZHAO , Xiaoping HONG
IPC: G01S17/42 , G01S7/481 , G01S7/4865
Abstract: The present disclosure provides a distance detection device. The distance detection device includes a light source configured to emit pulse light beams sequentially; and a scanning module including a first optical module, a second optical module, and drivers. The first optical module and the second optical module are sequentially positioned on an optical path of the light beams emitted by the light source, the drivers drive the first optical module and the second optical module to move to sequentially project the light beams emitted by the light source to different directions and form a strip-shaped scanning range after being emitted from the scanning module.
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公开(公告)号：US20200371209A1
公开(公告)日：2020-11-26
申请号：US16990598
申请日：2020-08-11
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang LIU , Xiaoping HONG , Huai HUANG
Abstract: The present disclosure provides a ranging system. The system includes a first transmitter configured to emit a first optical signal to an object; a receiver corresponding to the first transmitter, configured to receive a reflected signal corresponding to the first optical signal; a second transmitter configured to emit a second optical signal to the object; a receiver corresponding to the second transmitter, configured to receive a reflected signal corresponding to the second optical signal; a controller configured to control the first transmitter to emit the first optical signal and the second transmitter to emit the second optical signal; and a measuring device configured to acquire indication information based on the received reflected signal corresponding to the first optical signal and the reflected signal corresponding to the second optical signal, and to determine a distance of the object based on the indication information.
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公开(公告)号：US20220003850A1
公开(公告)日：2022-01-06
申请号：US17406972
申请日：2021-08-19
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang LIU , Shuai DONG , Xiaoping HONG
IPC: G01S7/4865 , G01S17/10 , G01S7/497 , G01S7/481
Abstract: A ranging device includes a threshold determination circuit and a detection channel. The threshold determination circuit is configured to determine a candidate comparison threshold according to a threshold-influencing factor. The detection channel is configured to receive a light pulse signal reflected by an object, convert the light pulse signal into an electrical signal, compare the electrical signal with the candidate comparison threshold, obtain time information of the electrical signal triggering the candidate comparison threshold, and determine a distance between the object and the ranging device according to the time information.
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