JP2006105802A - 距離測定装置 - Google Patents
距離測定装置 Download PDFInfo
- Publication number
- JP2006105802A JP2006105802A JP2004293360A JP2004293360A JP2006105802A JP 2006105802 A JP2006105802 A JP 2006105802A JP 2004293360 A JP2004293360 A JP 2004293360A JP 2004293360 A JP2004293360 A JP 2004293360A JP 2006105802 A JP2006105802 A JP 2006105802A
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- Prior art keywords
- light
- light receiving
- signal
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- measurement
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/02—Details
- G01C3/06—Use of electric means to obtain final indication
- G01C3/08—Use of electric radiation detectors
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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
- G01S7/481—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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
機械的な光路切替えを無くし、測距光の受光信号と内部参照光の受光信号との電気的な分別を可能とし、高速での測距を可能としドリフトの影響を無くして測定精度を向上させ、又測距光の受光信号と内部参照光の受光信号との分別の態様を変更可能とすることで、測定の一層の高速化、更に不要対象物による誤測定の防止等を可能とする。
【解決手段】
測定対象物にパルスレーザ光線を照射し、測定対象物で反射された外部光と内部光とを受光回路に於ける受光素子9によって受光検出し、外部光と内部光との受光に基づき測距を行う距離測定装置に於いて、前記受光回路40が非検出状態を形成し、該非検出状態が内部光の受光タイミングの前又は後に形成される。
【選択図】 図4
Description
5 内部参照光路
6 レーザ光源
9 受光素子
11 測定対象物
31 制御演算部
32 測距部
41 発信器
47 発光受光タイミング制御部
51 受信信号発生器
55 リセット信号
56 レディ信号
60 発光タイミング回路
64 リセット信号発生器
65 レディ信号発生器
66 受光モード設定器
Claims (4)
- 測定対象物にパルスレーザ光線を照射し、測定対象物で反射された外部光と内部光とを受光回路に於ける受光素子によって受光検出し、外部光と内部光との受光に基づき測距を行う距離測定装置に於いて、前記受光回路が非検出状態を形成し、該非検出状態が内部光の受光タイミングの前又は後に形成されることを特徴とする距離測定装置。
- 測定対象物にパルスレーザ光線を照射し、測定対象物で反射された外部光と内部光とを受光し、外部光と内部光との受光に基づき測距を行う距離測定装置に於いて、発光命令に基づきパルスレーザ光線を射出するレーザ光源と、外部光と内部光を受光可能な受光素子と、外部光と内部光とが同時に該受光素子に入射する様にした光学系と、前記受光素子の受光状態を制御する受光制御部と、前記発光命令に基づきレディ信号を発する発光受光タイミング制御部とを具備し、前記受光制御部はレディ信号に基づき前記受光素子がレディ信号以降に入射する最初のパルスレーザ光線を受光可能とし、前記発光受光タイミング制御部は前記受光素子が内部光を受光する時間の前又は後にレディ信号を発生する様構成されたことを特徴とする距離測定装置。
- 前記レディ信号は前記受光素子が内部光を受光する時間の前と後に交互に発せられる請求項2の距離測定装置。
- 前記レディ信号は前記受光素子が内部光を受光する時間の前に発せられるレディ信号に対して後に発せられるレディ信号を多くした請求項2の距離測定装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004293360A JP4761751B2 (ja) | 2004-10-06 | 2004-10-06 | 距離測定装置 |
US11/243,262 US7327441B2 (en) | 2004-10-06 | 2005-10-04 | Distance measuring system |
EP05256215A EP1645845A3 (en) | 2004-10-06 | 2005-10-05 | Distance measuring system |
CNB2005101137820A CN100422762C (zh) | 2004-10-06 | 2005-10-08 | 距离测量装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004293360A JP4761751B2 (ja) | 2004-10-06 | 2004-10-06 | 距離測定装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006105802A true JP2006105802A (ja) | 2006-04-20 |
JP4761751B2 JP4761751B2 (ja) | 2011-08-31 |
Family
ID=35517264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004293360A Active JP4761751B2 (ja) | 2004-10-06 | 2004-10-06 | 距離測定装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7327441B2 (ja) |
EP (1) | EP1645845A3 (ja) |
JP (1) | JP4761751B2 (ja) |
CN (1) | CN100422762C (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008076212A (ja) * | 2006-09-21 | 2008-04-03 | Topcon Corp | 光波距離測定方法、距離測定プログラム及び距離測定装置 |
JP2008083001A (ja) * | 2006-09-29 | 2008-04-10 | Topcon Corp | 光波距離測定方法、距離測定プログラム及び距離測定システム |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100362366C (zh) * | 2006-04-30 | 2008-01-16 | 太原理工大学 | 光纤激光器混沌激光测距装置及方法 |
JP5150329B2 (ja) * | 2008-03-26 | 2013-02-20 | 株式会社トプコン | 測量装置及び測量システム |
US9335220B2 (en) * | 2012-03-22 | 2016-05-10 | Apple Inc. | Calibration of time-of-flight measurement using stray reflections |
CN104221059B (zh) | 2012-03-22 | 2017-05-10 | 苹果公司 | 基于衍射感测镜子位置 |
EP2741049A1 (de) * | 2012-12-05 | 2014-06-11 | Leica Geosystems AG | Laserstrahlhorizontalitätstreue- Überprüfvorrichtung und ebensolches Verfahren |
WO2014203138A1 (en) * | 2013-06-17 | 2014-12-24 | Primesense Ltd. | Calibration of time-of-flight measurement using stray reflections |
DE102013212640A1 (de) * | 2013-06-28 | 2014-12-31 | Robert Bosch Gmbh | Vorrichtung zum Emittieren von elektromagnetischer Strahlung |
US9823352B2 (en) * | 2014-10-31 | 2017-11-21 | Rockwell Automation Safety Ag | Absolute distance measurement for time-of-flight sensors |
WO2016079870A1 (ja) * | 2014-11-21 | 2016-05-26 | 富士通株式会社 | 水量計測装置及び水量モニタリングシステム |
US10012831B2 (en) | 2015-08-03 | 2018-07-03 | Apple Inc. | Optical monitoring of scan parameters |
JP6533005B2 (ja) * | 2016-02-23 | 2019-06-19 | 富士フイルム株式会社 | 距離情報取得装置及び距離情報取得方法 |
US10557965B2 (en) * | 2016-12-02 | 2020-02-11 | Stmicroelectronics (Grenoble 2) Sas | Device, system, and method for detecting human presence |
JP6741039B2 (ja) * | 2018-04-04 | 2020-08-19 | 株式会社デンソー | 光測距装置 |
CN112601979A (zh) * | 2018-09-03 | 2021-04-02 | 松下知识产权经营株式会社 | 距离测定装置 |
US11681019B2 (en) | 2019-09-18 | 2023-06-20 | Apple Inc. | Optical module with stray light baffle |
US11506762B1 (en) | 2019-09-24 | 2022-11-22 | Apple Inc. | Optical module comprising an optical waveguide with reference light path |
CN111322982A (zh) * | 2020-03-23 | 2020-06-23 | 四川中保维新科技发展有限公司 | 基于激光光斑的沉降位移测量方法及装置 |
US20220091234A1 (en) * | 2020-09-24 | 2022-03-24 | Argo AI, LLC | Systems and methods for pre-blinding lidar detectors |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02181689A (ja) * | 1988-12-30 | 1990-07-16 | Topcon Corp | パルス方式の光波距離計 |
JPH1184003A (ja) * | 1997-09-04 | 1999-03-26 | Nikon Corp | 光波測距装置 |
JPH11326515A (ja) * | 1998-05-15 | 1999-11-26 | Nikon Corp | 光波測距定装置 |
JP2001124855A (ja) * | 1999-10-26 | 2001-05-11 | Matsushita Electric Works Ltd | 距離計測方法およびその装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US3649124A (en) * | 1968-12-05 | 1972-03-14 | Tokyo Shibaura Electric Co | Foreground object locating device |
US4167329A (en) * | 1977-12-12 | 1979-09-11 | Raytheon Company | Focussed doppler radar |
US4589070A (en) * | 1982-10-25 | 1986-05-13 | R & D Associates | Airborne wind shear response system |
US4920412A (en) * | 1988-12-22 | 1990-04-24 | Sperry Marine Inc. | Atmospheric obscurant penetrating target observation system with range gating |
CA2038818A1 (en) * | 1990-03-30 | 1991-10-01 | Akio Nagamune | Distance measuring method and apparatus therefor |
CN1094515A (zh) * | 1993-02-24 | 1994-11-02 | 新典自动化股份有限公司 | 一种激光测距方法及装置 |
EP1118208B1 (en) * | 1998-09-28 | 2004-11-10 | 3DV Systems Ltd. | Measuring distances with a camera |
JP4465671B2 (ja) * | 1999-07-19 | 2010-05-19 | 株式会社トプコン | 電子式測量機 |
JP4317631B2 (ja) * | 1999-11-24 | 2009-08-19 | 株式会社トプコン | 測量機の自動焦点装置 |
EP1382979B1 (en) * | 2001-04-25 | 2008-03-05 | Nikon Corporation | Range finder, range finding method, and photoelectric transducing circuit |
US6829042B1 (en) | 2002-06-10 | 2004-12-07 | Matsushita Electric Works, Ltd. | Distance measuring apparatus and method using a pulsed electromagnetic wave |
JP2004085529A (ja) * | 2002-06-25 | 2004-03-18 | Matsushita Electric Works Ltd | レーザー測距装置及び方法 |
JP4786856B2 (ja) * | 2002-10-25 | 2011-10-05 | 株式会社トプコン | メンテナンス予告検出手段内蔵型測量機 |
-
2004
- 2004-10-06 JP JP2004293360A patent/JP4761751B2/ja active Active
-
2005
- 2005-10-04 US US11/243,262 patent/US7327441B2/en active Active
- 2005-10-05 EP EP05256215A patent/EP1645845A3/en not_active Withdrawn
- 2005-10-08 CN CNB2005101137820A patent/CN100422762C/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02181689A (ja) * | 1988-12-30 | 1990-07-16 | Topcon Corp | パルス方式の光波距離計 |
JPH1184003A (ja) * | 1997-09-04 | 1999-03-26 | Nikon Corp | 光波測距装置 |
JPH11326515A (ja) * | 1998-05-15 | 1999-11-26 | Nikon Corp | 光波測距定装置 |
JP2001124855A (ja) * | 1999-10-26 | 2001-05-11 | Matsushita Electric Works Ltd | 距離計測方法およびその装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008076212A (ja) * | 2006-09-21 | 2008-04-03 | Topcon Corp | 光波距離測定方法、距離測定プログラム及び距離測定装置 |
US7609365B2 (en) | 2006-09-21 | 2009-10-27 | Kabushiki Kaisha Topcon | Electro-optical distance measuring method, distance measuring program and distance measuring device |
JP2008083001A (ja) * | 2006-09-29 | 2008-04-10 | Topcon Corp | 光波距離測定方法、距離測定プログラム及び距離測定システム |
US7474387B2 (en) | 2006-09-29 | 2009-01-06 | Kabushiki Kaisha Topcon | Electro-optical distance measuring method, distance measuring program and distance measuring system |
Also Published As
Publication number | Publication date |
---|---|
EP1645845A2 (en) | 2006-04-12 |
EP1645845A3 (en) | 2008-11-12 |
US7327441B2 (en) | 2008-02-05 |
US20060072100A1 (en) | 2006-04-06 |
JP4761751B2 (ja) | 2011-08-31 |
CN100422762C (zh) | 2008-10-01 |
CN1758071A (zh) | 2006-04-12 |
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