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1. WO2022044317 - DISTANCE MEASUREMENT DEVICE

Publication Number WO/2022/044317
Publication Date 03.03.2022
International Application No. PCT/JP2020/032857
International Filing Date 31.08.2020
IPC
G01S 7/481 2006.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
481Constructional features, e.g. arrangements of optical elements
G02B 26/10 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
10Scanning systems
CPC
G01S 7/481
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
481Constructional features, e.g. arrangements of optical elements
G02B 26/10
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
10Scanning systems
Applicants
  • 三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP]/[JP]
Inventors
  • 本田 菜月 HONDA, Natsuki
  • 大牧 正幸 OMAKI, Masayuki
  • 中原 彰太 NAKAHARA, Shota
Agents
  • 特許業務法人深見特許事務所 FUKAMI PATENT OFFICE, P.C.
Priority Data
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) DISTANCE MEASUREMENT DEVICE
(FR) DISPOSITIF DE MESURE DE DISTANCE
(JA) 測距装置
Abstract
(EN) This distance measurement device (1) comprises a light source (10), a sweeping mirror (20), and a light reception optical system (30). The light source (10) emits a light beam (12). The sweeping mirror (20) sweeps the light beam (12). The light reception optical system (30) receives return light (26). The light reception optical system (30) comprises a light collecting optical system (31), a light reception element (36), and an aperture (32) between the light collecting optical system (31) and the light reception element (36). The aperture (32) is disposed on the focal plane of the light collecting optical system (31). The angle of view of the light reception optical system (30) is smaller than the angle of divergence of the light beam (12).
(FR) Ce dispositif de mesure de distance (1) comprend une source de lumière (10), une unité de balayage (20) et un système optique de réception de lumière (30). La source de lumière (10) émet un faisceau lumineux (12). Le miroir de balayage (20) balaye le faisceau lumineux (12). Le système optique de réception de lumière (30) reçoit une lumière de retour (26). Le système optique de réception de lumière (30) comprend un système optique de collecte de lumière (31), un élément de réception de lumière (36), et une ouverture (32) entre le système optique de collecte de lumière (31) et l'élément de réception de lumière (36). L'ouverture (32) est disposée sur le plan focal du système optique de collecte de lumière (31). L'angle de vision du système optique de réception de lumière (30) est inférieur à l'angle de divergence du faisceau lumineux (12).
(JA) 測距装置(1)は、光源(10)と、走査ミラー(20)と、受光光学系(30)とを備える。光源(10)は、光ビーム(12)を出射する。走査ミラー(20)は、光ビーム(12)を走査する。受光光学系(30)は、戻り光(26)を受光する。受光光学系(30)は、集光光学系(31)と、受光素子(36)と、集光光学系(31)と受光素子(36)との間にあるアパーチャ(32)とを含む。アパーチャ(32)は、集光光学系(31)の焦点面上に配置されている。受光光学系(30)の視野角は、光ビーム(12)の発散角より小さい。
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