公开(公告)号：US20230012091A1

公开(公告)日：2023-01-12

申请号：US17934082

申请日：2022-09-21

Applicant: DENSO CORPORATION

Inventor： Noriyuki OZAKI ,  Yoshihiro MURAKAMI ,  Takehiro HATA ,  Yoshiaki HOASHI ,  Masato NAKAJIMA

IPC: G01S7/4865 ,  G01S7/484 ,  G01S17/10

Abstract: A rangefinder includes a light emitting part, a light receiving part, a calculating part that calculates the distance from a reflective object, and a control part. The calculating part has a received light intensity determining part, a peak detecting part, and a distance calculating part, and a distance determining part. The control part controls at least one of the intensity of the pulsed light, the sensitivity of the light receiving part to received light, and a position of the region of interest so that a first received light intensity is obtained as the received light intensity of each of the plurality of times of flight at least once, and a second received light intensity having a higher S/N ratio is obtained as the received light intensity of each of the plurality of times of flight at least once. The distance determining part determines the measurement target distance by using the first distance based on the first received light intensity and the second distance based on the second received light intensity.

公开(公告)号：US20210149026A1

公开(公告)日：2021-05-20

申请号：US17138699

申请日：2020-12-30

Applicant: DENSO CORPORATION

Inventor： Hitoshi YAMADA ,  Yoshiaki HOASHI ,  Fumiaki MIZUNO ,  Noriyuki OZAKI ,  Akifumi UENO

IPC: G01S7/481 ,  G02B27/30 ,  G02B26/12 ,  G02B5/10 ,  G01S7/484

Abstract: An optical distance measuring device includes a light emitting element in which a plurality of light emitting units 16 that emit light are arranged so that a gap is present between adjacent ones of the light emitting units, a transmission unit through which the light is transmitted, a drive unit that changes a positional relationship between the light emitting element and the transmission unit, and a light receiving unit that receives reflected light of the light. The drive unit changes the positional relationship between the light emitting element and the transmission unit, thereby changing an irradiation path of the light along an arrangement direction.

公开(公告)号：US20190025410A1

公开(公告)日：2019-01-24

申请号：US16069720

申请日：2016-11-28

Applicant: DENSO CORPORATION

Inventor： Yoshiaki HOASHI

IPC: G01S7/481 ,  G01S17/10 ,  G02B26/08 ,  G02B26/10

Abstract: An optical scanning device is provided in a pulse distance measurement radar apparatus. The optical scanning device includes reflectors that are arranged right outside a scanning angle of an optical beam, an optical detector that is arranged at a position where reflected light from the reflectors reaches, and a scanning angle detector that detects the scanning angle of the optical beam based on result of detection by the optical detector.

公开(公告)号：US20220268897A1

公开(公告)日：2022-08-25

申请号：US17663091

申请日：2022-05-12

Applicant: DENSO CORPORATION

Inventor： Akifumi UENO ,  Fumiaki MIZUNO ,  Yoshiaki HOASHI

IPC: G01S7/481 ,  G01S17/08 ,  G01D5/14

Abstract: A distance measuring device includes a deflecting mirror configured to reflect transmission waves, and a swing motor configured to swing the deflecting mirror round a swing shaft so that scanning with the transmission waves is performed within a predetermined scanning region. The swing motor is configured to swing the deflecting mirror within a range of a predetermined rotation angle from a reference position, which is a rotational position of the deflecting mirror that reflects the transmission waves in a direction to a substantial center of the scanning region. The deflecting mirror is configured to return to the reference position when a distance measuring process, in which scanning with the transmission waves is repeated, ends.

公开(公告)号：US20140078488A1

公开(公告)日：2014-03-20

申请号：US14028737

申请日：2013-09-17

Applicant: DENSO CORPORATION

Inventor： Yoshiaki HOASHI

IPC: G01S7/481

CPC classification number: G01S7/4817 ,  G01S7/4812 ,  G01S7/4876 ,  G01S7/499

Abstract: An optical radar device for scanning an object that reduces the effects of stray light is provided. The optical radar device has a light source, a light scanning section, a light path change section, a light receiver, and an opposite phase signal adder. The opposite phase signal adder adds an opposite phase signal to the output signal from the light receiver. A rise timing of the opposite phase signal is delayed by a predetermined time relative to an output timing of the pulse light, and the opposite phase signal has an opposite phase with respect to a phase of the reflected light.

Abstract translation: 提供了一种用于扫描物体以减少杂散光的影响的光学雷达装置。 光学雷达装置具有光源，光扫描部，光路改变部，光接收部和反相信号加法器。 反相信号加法器将相反相位信号加到来自光接收器的输出信号上。 相对相位信号的上升定时相对于脉冲光的输出定时被延迟预定时间，并且相反相位信号相对于反射光的相位具有相反的相位。

公开(公告)号：US20220137186A1

公开(公告)日：2022-05-05

申请号：US17647939

申请日：2022-01-13

Applicant: DENSO CORPORATION

Inventor： Masato NAKAJIMA ,  Yoshiaki HOASHI

IPC: G01S7/484 ,  H01S5/042 ,  G01S17/10

Abstract: A light-emitting element drive device for driving a light-emitting element includes a capacitor that is charged by a power supply and is for supplying a current to the light-emitting element, a first wire for allowing the current to flow from the capacitor to the light-emitting element, a second wire through which a current that is output from the light-emitting element flows, a first switch for switching a state of the capacitor between a charged state in which the capacitor is charged by the power supply and a discharged state in which the current is supplied from the capacitor to the light-emitting element, a diode that is reversely connected to the first wire and the second wire in parallel with the light emitting element, and a resistance element connected in series with the diode. The diode is a body diode included in a field-effect transistor.

公开(公告)号：US20220109285A1

公开(公告)日：2022-04-07

申请号：US17644707

申请日：2021-12-16

Applicant: DENSO CORPORATION

Inventor： Hitoshi YAMADA ,  Yoshiaki HOASHI

IPC: H01S5/042 ,  H01S5/40 ,  H01S5/02315

Abstract: A semiconductor laser light source module includes an emission unit provided with an upper electrode and a lower electrode, emitting a laser light in one direction; a laser diode having a plurality of emission units arranged in a state where emission directions of the laser light are aligned; a plurality of package side electrodes that supply current to respective emission units; and a plurality of first wires that electrically connect respective upper electrodes of the plurality of emission units with the package side electrodes corresponding to the upper electrodes individually. One first wire that connects one emission unit in the arranged emission units with one of package side electrodes corresponding to the one emission unit, and the other first wire that connects the other emission unit adjacent to the one emission unit with one of package side electrodes corresponding to the other emission unit are non-parallel in plan view.

公开(公告)号：US20210097324A1

公开(公告)日：2021-04-01

申请号：US17038264

申请日：2020-09-30

Applicant: DENSO CORPORATION

Inventor： Yoshiaki HOASHI

IPC: G06K9/32 ,  G06K9/00 ,  G06K9/46 ,  G01S7/497 ,  G01S17/931 ,  G01S17/86 ,  G05D1/02 ,  B60W30/095 ,  B60W50/14 ,  B60W60/00

Abstract: A detection apparatus detects a tilt of a LiDAR apparatus that is mounted to a vehicle. The detection apparatus includes a distance image acquiring unit, a surroundings information acquiring unit, and a detecting unit. The distance image acquiring unit acquires a distance image that is expressed by a detection point group that is detected by the LiDAR apparatus. The surroundings information acquiring unit acquires surroundings information on a periphery of a traveling route of the vehicle. The detecting unit that determines the tilt of the LiDAR apparatus based on the acquired distance image and the acquired surroundings information.

公开(公告)号：US20140078489A1

公开(公告)日：2014-03-20

申请号：US14028765

申请日：2013-09-17

Applicant: Denso Corporation

Inventor： Yoshiaki HOASHI

IPC: G01S7/481

CPC classification number: G01S7/481 ,  G01S7/4812 ,  G01S7/4817 ,  G01S7/499

Abstract: An optical laser device for scanning an object is provided. The optical radar device includes a light source that outputs a beam having an elliptical cross section. The beam is output towards a light scanning section that rotates a mirror plate about an axis for (i) reflecting the beam toward the object and (ii) reflecting a reflected light received from the object. The device also includes a light path change section that guides the beam toward the light scanning section and guides the reflected light from the light scanning section in a direction that is different from a direction of the light source. A light receiver receives the reflected light. Further, the elliptical cross section of the beam has a major axis and the major axis is substantially parallel to the axis of the mirror plate.

Abstract translation: 提供了一种用于扫描物体的光学激光装置。 光学雷达装置包括输出具有椭圆截面的光束的光源。 光束被输出到光扫描部分，该光扫描部分使镜板围绕轴旋转，以便（i）将光束反射到物体，和（ii）反射从物体接收的反射光。 该装置还包括光束改变部分，其将光束引导到光扫描部分，并且沿与光源的方向不同的方向引导来自光扫描部分的反射光。 光接收器接收反射光。 此外，梁的椭圆截面具有长轴，并且长轴基本上平行于镜板的轴线。