JP4533147B2 - 近接センサ - Google Patents
近接センサ Download PDFInfo
- Publication number
- JP4533147B2 JP4533147B2 JP2004550804A JP2004550804A JP4533147B2 JP 4533147 B2 JP4533147 B2 JP 4533147B2 JP 2004550804 A JP2004550804 A JP 2004550804A JP 2004550804 A JP2004550804 A JP 2004550804A JP 4533147 B2 JP4533147 B2 JP 4533147B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- proximity sensor
- mask
- detector
- field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- G01S17/04—Systems determining the presence of a target
Description
図1は、単純な近接センサとして使用される、本発明による本発明の実施形態を示している。スポット投影器2は、場にスポットのアレイを投影する。レンズ4は、場から反射された光を集め、検出器8上のマスク6を通してその焦点を合わせる。検出器8は、アラーム12を制御する閾値回路10に接続される。
Claims (11)
- 光のスポットのアレイで場を照明するための照明手段、
前記場から反射された光を受け取るように配置された検出器、及び、
前記場から前記検出器までの光の光路内に置かれたマスク
を備える近接センサであって、
前記マスクが、透過部及び非透過部を有し、使用されるとき、前記センサからの第一の範囲の距離内のターゲットから反射された光は、前記マスクを通して前記検出器に伝播され、第二の範囲の距離からの光は、前記マスクを通して伝播されないように、前記照明手段及び検出器とともに配置され、
前記照明手段は、光導波路の入力面の一部を照明するように配置された光源を備え、前記光導波路は、実質的に反射性の側面を持つ管を備え、前記場に向けて前記光源の別個の映像のアレイを投影するように、投影光学系とともに配置される
ことを特徴とする近接センサ。 - 前記照明手段が、前記場を赤外光のスポットで照明する
ことを特徴とする請求項1に記載の近接センサ。 - 前記照明手段が、所定の周波数で変調され、該所定の周波数においてフィルタが前記検出器に適用される
ことを特徴とする請求項1又は2に記載の近接センサ。 - 前記マスクは、前記センサからの複数の範囲の距離を定め、各距離範囲内のターゲットからの異なる量の反射光を伝播するようにされた
ことを特徴とする請求項1〜3のいずれか1項に記載の近接センサ。 - 前記照明手段は、複数のスポットを異なる変調周波数で投影するようにされ、前記マスクは、各範囲の距離において異なる変調周波数を前記検出器に伝播するようにされた
ことを特徴とする請求項4に記載の近接センサ。 - 前記マスクは、複数の透過ウィンドウを持つ実質的に非伝播性の材料を備える
ことを特徴とする請求項1〜5のいずれか1項に記載の近接センサ。 - 前記光導波路が、正方形断面を持つ管を備える
ことを特徴とする請求項1〜6のいずれか1項に記載の近接センサ。 - 前記管が、反射内部表面を持つ中空管を備える
ことを特徴とする請求項1〜7のいずれか1項に記載の近接センサ。 - 前記管が、固体材料を備え、該管の材料と周辺材料との間のインターフェースにおける実質的な量の入射光が内部全反射されるように配置された
ことを特徴とする請求項1〜7のいずれか1項に記載の近接センサ。 - 前記光源がLEDを備える
ことを特徴とする請求項1〜9のいずれか1項に記載の近接センサ。 - 前記光源がLEDのアレイを備える
ことを特徴とする請求項1〜10のいずれか1項に記載の近接センサ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0226243A GB2395262A (en) | 2002-11-11 | 2002-11-11 | Optical proximity sensor with array of spot lights and a mask |
PCT/GB2003/004861 WO2004044619A2 (en) | 2002-11-11 | 2003-11-11 | Proximity sensor |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006505783A JP2006505783A (ja) | 2006-02-16 |
JP2006505783A5 JP2006505783A5 (ja) | 2006-12-28 |
JP4533147B2 true JP4533147B2 (ja) | 2010-09-01 |
Family
ID=9947579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004550804A Expired - Fee Related JP4533147B2 (ja) | 2002-11-11 | 2003-11-11 | 近接センサ |
Country Status (7)
Country | Link |
---|---|
US (1) | US7459670B2 (ja) |
EP (1) | EP1561125A2 (ja) |
JP (1) | JP4533147B2 (ja) |
CN (1) | CN100340868C (ja) |
AU (1) | AU2003283542A1 (ja) |
GB (1) | GB2395262A (ja) |
WO (1) | WO2004044619A2 (ja) |
Families Citing this family (20)
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US9148995B2 (en) * | 2010-04-29 | 2015-10-06 | Hagie Manufacturing Company | Spray boom height control system |
CN102401901B (zh) * | 2010-09-16 | 2014-09-10 | 原相科技股份有限公司 | 测距系统及测距方法 |
US8599018B2 (en) | 2010-11-18 | 2013-12-03 | Yael Debra Kellen | Alarm system having an indicator light that is external to an enclosed space for indicating the time elapsed since an intrusion into the enclosed space and method for installing the alarm system |
US8624735B2 (en) | 2010-11-18 | 2014-01-07 | Yael Debra Kellen | Alarm system having an indicator light that is external to an enclosed space for indicating the specific location of an intrusion into the enclosed space and a method for installing the alarm system |
US20120162636A1 (en) * | 2010-12-23 | 2012-06-28 | Silicon Laboratories, Inc. | Proximity detector including anti-falsing mechanism |
US8892163B2 (en) * | 2012-03-06 | 2014-11-18 | Omni Vision Technologies, Inc. | Image sensor having a pulsed mode of operation |
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US8946620B2 (en) | 2012-10-16 | 2015-02-03 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Proximity sensor device with internal channeling section |
US9151865B2 (en) * | 2013-02-04 | 2015-10-06 | Fraba Nv | Method and system for sensing light reflective surfaces in a reflective photo-electric sensing system including a light channeling device and a foreground suppression performance |
US9772398B2 (en) * | 2014-06-26 | 2017-09-26 | Intersil Americas LLC | Optical proximity sensors with reconfigurable photodiode array |
US9921297B2 (en) * | 2014-11-24 | 2018-03-20 | The Boeing Company | Range enhancement for LIDAR system and IR camera systems |
JP6607709B2 (ja) * | 2015-06-08 | 2019-11-20 | ローム株式会社 | 近接センサ |
US10502830B2 (en) | 2016-10-13 | 2019-12-10 | Waymo Llc | Limitation of noise on light detectors using an aperture |
US11561284B2 (en) * | 2018-11-02 | 2023-01-24 | Waymo Llc | Parallax compensating spatial filters |
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-
2002
- 2002-11-11 GB GB0226243A patent/GB2395262A/en not_active Withdrawn
-
2003
- 2003-11-11 JP JP2004550804A patent/JP4533147B2/ja not_active Expired - Fee Related
- 2003-11-11 AU AU2003283542A patent/AU2003283542A1/en not_active Abandoned
- 2003-11-11 WO PCT/GB2003/004861 patent/WO2004044619A2/en active Application Filing
- 2003-11-11 US US10/534,494 patent/US7459670B2/en not_active Expired - Fee Related
- 2003-11-11 EP EP03775516A patent/EP1561125A2/en not_active Withdrawn
- 2003-11-11 CN CNB2003801084767A patent/CN100340868C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN100340868C (zh) | 2007-10-03 |
GB0226243D0 (en) | 2002-12-18 |
WO2004044619A2 (en) | 2004-05-27 |
JP2006505783A (ja) | 2006-02-16 |
US7459670B2 (en) | 2008-12-02 |
WO2004044619A3 (en) | 2004-08-05 |
GB2395262A (en) | 2004-05-19 |
CN1735817A (zh) | 2006-02-15 |
US20060163455A1 (en) | 2006-07-27 |
AU2003283542A8 (en) | 2004-06-03 |
AU2003283542A1 (en) | 2004-06-03 |
EP1561125A2 (en) | 2005-08-10 |
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