JP2019124924A - ポリゴンスキャナ及び監視領域内の物体の検出方法 - Google Patents
ポリゴンスキャナ及び監視領域内の物体の検出方法 Download PDFInfo
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- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4817—Constructional features, e.g. arrangements of optical elements relating to scanning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/4808—Evaluating distance, position or velocity data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/486—Receivers
- G01S7/4865—Time delay measurement, e.g. time-of-flight measurement, time of arrival measurement or determining the exact position of a peak
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
- G02B26/124—Details of the optical system between the light source and the polygonal mirror
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/10—Mirrors with curved faces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10554—Moving beam scanning
- G06K7/10594—Beam path
- G06K7/10683—Arrangement of fixed elements
- G06K7/10702—Particularities of propagating elements, e.g. lenses, mirrors
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/42—Simultaneous measurement of distance and other co-ordinates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
- G01S7/4812—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver transmitted and received beams following a coaxial path
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Abstract
Description
Claims (15)
- 監視領域(22)内の物体(24)を検出するためのポリゴンスキャナ(10)であって、前記監視領域(22)内へ光線(16)を送出するための発光器(12)と、前記監視領域(22)内の物体(24)により反射される光線(26)を受光するための受光器(30)と、前記受光器(30)の受信信号を評価するための評価部(32)と、前記光線(16)を周期的に方向転換させる回転可能な鏡ユニット(20)であって、複数のファセット(34)を有し、以て前記監視領域(22)として角度部分を該鏡ユニット(20)の1回転あたり複数回、それぞれのファセット(34)で走査する鏡ユニット(20)とを備え、前記ファセット(34)の少なくともいくつかが互いに異なる湾曲を有しているポリゴンスキャナ(10)において、
前記ファセット(34)の少なくとも1つが自由形状面として構成されており、該自由形状面の湾曲が、前記鏡ユニット(20)の回転の間に変化する該ファセット(34)への前記送出光線(16)の入射角に適応化されていることを特徴とするポリゴンスキャナ(10)。 - 前記自由形状面が、変化する入射角に対して同じ焦点位置がセットされるように湾曲していることを特徴とする請求項1に記載のポリゴンスキャナ(10)。
- 前記自由形状面が前記光線(16)の走査平面から傾いていることを特徴とする請求項1又は2に記載のポリゴンスキャナ(10)。
- 前記自由形状面が、前記送出光線(16)の走査領域(40a〜b)が真っ直ぐになるように湾曲していることを特徴とする請求項1〜3のいずれかに記載のポリゴンスキャナ(10)。
- 鏡ユニット(20)の回転位置を監視するための角度測定部(32、34a、42)を備えており、前記評価部(32)が前記回転位置を利用して各時点で作動中のファセット(34)を識別するように構成されていることを特徴とする請求項1〜4のいずれかに記載のポリゴンスキャナ(10)。
- 各ファセット(34)での走査の開始の度に前記送出光線(16)を検出する開始センサ(42)を備えており、少なくとも1つのファセット(34)が改変(34a)を備えており、該改変が、前記送出光線(16)が前記開始センサ(42)内で生じさせる開始信号から該ファセット(34)を識別することを可能にすることを特徴とする請求項1〜5のいずれかに記載のポリゴンスキャナ(10)。
- 前記ファセット(34)が改変として、特に公差の差異により、異なる大きさを有していることを特徴とする請求項6に記載のポリゴンスキャナ(10)。
- 前記評価部(32)が、前記開始信号の時間的な連続を基準として学習し、駆動時に前記開始信号の時間的な連続を該基準と比較することにより各時点で作動中のファセット(34)を識別するように構成されていることを特徴とする請求項7に記載のポリゴンスキャナ(10)。
- 前記ファセット(34)が改変として、前記開始信号を生成する開始領域(34a)内において他のファセット(34)とは異なる反射性及び/又は湾曲を有していることを特徴とする請求項6〜8のいずれかに記載のポリゴンスキャナ(10)。
- 前記開始領域(34a)に反射性の異なる複数の領域から成るパターンが設けられていることを特徴とする請求項9に記載のポリゴンスキャナ(10)。
- 前記角度測定部(32)に前記鏡ユニット(20)を回転させるための駆動部のタコ信号が供給されていることを特徴とする請求項5〜10のいずれかに記載のポリゴンスキャナ(10)。
- 前記評価部(32)が、検知された物体(24)までの距離を前記受信信号から光伝播時間法で測定するように構成されていることを特徴とする請求項1〜11のいずれかに記載のポリゴンスキャナ(10)。
- 前記評価部(32)が、異なるファセット(34)からの受信信号を互いに比較し、最も鮮明な受信信号を評価するように構成されていることを特徴とする請求項1〜12のいずれかに記載のポリゴンスキャナ(10)。
- バーコードスキャナとして構成されていること、及び、その評価部(32)がバーコード復号器を備えていることを特徴とする請求項1〜13のいずれかに記載のポリゴンスキャナ(10)。
- 監視領域(22)内の物体(24)を検出するための方法であって、光線(16)が送出されて前記監視領域(22)内の物体(26)の表面で反射された後で再び受光されて評価され、前記監視領域(22)の角度範囲が、複数のファセット(34)を有する回転可能な鏡ユニット(20)のファセット(34)の表面で前記光線(16)が方向転換されることにより周期的に走査され、前記光線(16)が、走査の異なる周期において、前記ファセット(34)の少なくともいくつかの異なる湾曲により、異なる態様で集光される、という方法において、
前記光線(16)が、或る走査周期内で、自由形状として形成された湾曲したファセット(34)により、該ファセット(34)の回転の間に変化する該ファセット(34)への前記送出光線(16)の入射角に適応化された方法で、集光されることを特徴とする方法。
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EP (1) | EP3486833B1 (ja) |
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- 2018-11-19 JP JP2018216273A patent/JP2019124924A/ja active Pending
- 2018-11-19 KR KR1020180142784A patent/KR20190058331A/ko not_active Application Discontinuation
- 2018-11-20 US US16/196,567 patent/US11353560B2/en active Active
- 2018-11-21 CN CN201811392106.5A patent/CN109815756B/zh active Active
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Also Published As
Publication number | Publication date |
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US20190154807A1 (en) | 2019-05-23 |
DE102017127420A1 (de) | 2019-05-23 |
EP3486833B1 (de) | 2020-04-22 |
CN109815756B (zh) | 2022-04-08 |
KR20190058331A (ko) | 2019-05-29 |
US11353560B2 (en) | 2022-06-07 |
CN109815756A (zh) | 2019-05-28 |
EP3486833A1 (de) | 2019-05-22 |
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