公开(公告)号：US20220268896A1

公开(公告)日：2022-08-25

申请号：US17653098

申请日：2022-03-01

Applicant: DENSO CORPORATION

Inventor： Akifumi UENO ,  Teiyuu KIMURA ,  Fumiaki MIZUNO

IPC: G01S7/481 ,  G02B26/08 ,  G01S7/497 ,  G05D3/12 ,  G01S17/42

Abstract: An optical distance measurement apparatus includes a casing, a light emitting unit, a mirror, a rotating unit, a light receiving unit, a window portion, and a reference angle marker. The light emitting unit emits laser light. The mirror is arranged inside the casing and reflects the laser light that is emitted from the light emitting unit. The rotating unit rotates the mirror. The light receiving unit includes a light receiving element for receiving incident light. The window portion is provided in the casing and is for emitting the laser light that is reflected by the mirror outside the casing. The reference angle marker is provided in at least either of the casing and the window portion, and is detected by the light receiving unit based on a rotation angle of the mirror being a reference rotation angle that is prescribed in advance.

公开(公告)号：US20210239840A1

公开(公告)日：2021-08-05

申请号：US16778781

申请日：2020-01-31

Applicant: DENSO CORPORATION

Inventor： Teiyuu KIMURA ,  Noriyuki OZAKI ,  Akifumi UENO

IPC: G01S17/93 ,  G02B26/10 ,  G01C3/08 ,  G01S7/481

Abstract: A LIDAR device for measuring a distance to an object in a scanning zone includes a light source, a light receiver, a rotatable mirror, a motor, an angle sensor, and a controller. The rotatable mirror is configured to reflect the light beam emitted from the light source toward the scanning zone. The motor is configured to rotate the mirror back and forth between a first position and a second position. The angle sensor is configured to detect a rotation angle of the mirror and to output a detection signal indicative of the rotation angle of the mirror at a plurality of predetermined angle intervals during each rotation cycle between the first position and the second position of the mirror. The controller is configured to output a control signal to the light source to emit a light beam upon receiving the detection signal from the angle sensor.

公开(公告)号：US20230273322A1

公开(公告)日：2023-08-31

申请号：US18303688

申请日：2023-04-20

Applicant: DENSO CORPORATION

Inventor： Teiyuu KIMURA ,  Noriyuki OZAKI ,  Akifumi UENO

IPC: G01S17/93 ,  G02B26/10 ,  G01C3/08 ,  G01S7/481

CPC classification number: G01S17/93 ,  G02B26/105 ,  G01C3/08 ,  G01S7/481

Abstract: A LIDAR device for measuring a distance to an object in a scanning zone includes a light source, a light receiver, a rotatable mirror, a motor, an angle sensor, and a controller. The rotatable mirror is configured to reflect the light beam emitted from the light source toward the scanning zone. The motor is configured to rotate the mirror back and forth between a first position and a second position. The angle sensor is configured to detect a rotation angle of the mirror and to output a detection signal indicative of the rotation angle of the mirror at a plurality of predetermined angle intervals during each rotation cycle between the first position and the second position of the mirror. The controller is configured to output a control signal to the light source to emit a light beam upon receiving the detection signal from the angle sensor.

公开(公告)号：US20220113408A1

公开(公告)日：2022-04-14

申请号：US17645016

申请日：2021-12-17

Applicant: DENSO CORPORATION

Inventor： Teiyuu KIMURA ,  Toshiaki NAGAI ,  Sakito MIKI ,  Akifumi UENO

IPC: G01S17/08 ,  G01S7/481 ,  G01S7/484 ,  G01S7/4865

Abstract: An optical distance measuring device using light includes a light-emitting part in which a first and second light-emitting elements that have a light-emitting region, in which a length in a first direction is longer than that in a second direction intersecting the first direction, are separated from each other in the second direction; two projection lenses that are respectively provided to correspond to the first and second light-emitting elements, and are separated from each other in the second direction and arranged at positions overlapping each other in the first direction; a scanner that scans a measurement region with emitted beams emitted from the light-emitting part and have passed through the projection lenses; a light receiving part that receives reflected light of the emitted beams emitted from the light-emitting part; and a measurement section measuring a distance to an object according to a time period from light emission to light reception.

公开(公告)号：US20210239803A1

公开(公告)日：2021-08-05

申请号：US16778263

申请日：2020-01-31

Applicant: DENSO CORPORATION

Inventor： Kazuhisa ONDA ,  Teiyuu KIMURA

IPC: G01S7/481 ,  G01S17/08 ,  G01S17/42

Abstract: A LIDAR device includes a light source, a mirror, a rotatable shaft, and a motor. The light source configured to emit a light beam having a predetermined light beam width for scanning a scanning zone. The rotatable shaft has a center axis parallel to a reflective surface of the mirror and is connected to a back surface of the mirror. The motor is configured to rotate the shaft to cause the mirror to swing between a first position and a second position. The light source and the mirror are arranged to have a positional relationship such that a mirror center is aligned with the light beam center when the mirror is at the first position, and the mirror center shifts within a motion area when the mirror is swinging between the first position, non-inclusive, and the second position, inclusive.