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公开(公告)号：US20220082665A1
公开(公告)日：2022-03-17
申请号：US17456624
申请日：2021-11-26
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Yalin CHEN , Shuai DONG , Xiaoping HONG
Abstract: A method for controlling a scanning field of view (FOV) of a ranging apparatus includes emitting a light pulse sequence, changing the light pulse sequence to exit at different direction via at least three optical elements, wherein controlling the scanning FOV by controlling the at least three optical elements including at least one of controlling at least one of a scan patterns, a position, or a scanning density of the scanning FOV by controlling rotation speeds of the at least three optical elements, and/or controlling an extension direction of the scanning FOV by controlling initial phases of the at least three optical elements.
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2.发明申请公开(公告)号：US20210333401A1
公开(公告)日：2021-10-28
申请号：US17372056
申请日：2021-07-09
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Shuai DONG , Yalin CHEN , Fu ZHANG , Xiaoping HONG
Abstract: The present disclosure provides a distance measuring device. The distance measuring device is configured to detect a target scene to generate point cloud data, the point cloud data including a distance and/or an orientation of a detection object relative to the distance measuring device. An accumulation time of the point cloud data of one or more frames is greater than a time interval between outputting the point cloud data of adjacent frames.
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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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公开(公告)号：US20210281040A1
公开(公告)日：2021-09-09
申请号：US17330377
申请日：2021-05-25
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang LIU , Xiaoping HONG , Shuai DONG
IPC: H01S5/0237 , H01S5/068
Abstract: The present disclosure provides a laser diode package. The package includes a sealing body, a laser diode chip placed in the sealing body, and a shaping element disposed on an outer surface of the sealing body and configured to shape light emitted from the laser diode chip.
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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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Patent Agency Ranking
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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7.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：US20210333374A1
公开(公告)日：2021-10-28
申请号：US17371927
申请日：2021-07-09
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Shuai DONG , Li WANG , Xiongze MEI , Han CHEN
Abstract: A ranging apparatus includes an emitter and a detector. The emitter is configured to emit a light pulse sequence. The detector is configured to receive and convert a portion of return light reflected by an object into an electrical signal and determine at least one of a distance or an orientation of the object relative to the ranging apparatus according to the electrical signal. At least one of an anti-reflection material or a reflective surface with a predetermined inclined angle is arranged at a non-working surface off an emission optical path of the light pulse sequence and a reception optical path of the return light and is configured to reflect stray light to outside of the detector. The non-working surface includes a surface of the ranging apparatus that the light pulse sequence and the return light do not pass through.
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公开(公告)号：US20210333369A1
公开(公告)日：2021-10-28
申请号：US17371876
申请日：2021-07-09
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Shuai DONG , Xiaoping HONG , Xiang LIU , Yue YAN , Xiaoyi GUI
IPC: G01S7/481 , G01S17/08 , G01S17/894 , G01S7/48
Abstract: A ranging system includes at least two types of a first-type ranging apparatus, a second-type ranging apparatus, and a third-type ranging apparatus. Each of the first-type ranging apparatus and the second-type ranging apparatus includes a ranging device and a scanner. The ranging device includes a light source, a convergent lens, and a receiver. The third-type ranging apparatus includes a ranging device and a scanner. A FOV of the second-type ranging apparatus is smaller than a FOV of the first-type ranging apparatus. A diameter and a focal length of a convergent lens of the second-type ranging apparatus are greater than a diameter and a focal length of a convergent lens of the first-type ranging apparatus, respectively.
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公开(公告)号：US20210263303A1
公开(公告)日：2021-08-26
申请号：US17215654
申请日：2021-03-29
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Shuai DONG , Xiaoping Hong , Xiang Liu , Huai Huang , Jin Zhao
Abstract: Disclosed are techniques for scanning an optical beam in two dimensions (e.g. azimuth and elevation) and for increasing or decreasing a field-of-view (FOV) of the scanned beam. Scanning may be performed by various configurations of prisms, rotatable mirrors, and/or rotatable polygonal mirrors. In some configuration, changes to the FOV of the scanned beam may be performed by prisms positioned with a predetermined angular relationship and may include other optical components, as well. Depending on the predetermined angular relationship, the prisms can expand the FOV along one or more axis and/or may compress the FOV along one or more axis.
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