JP6002458B2 - 光学式エンコーダ、及び、そのレンズ固定機構 - Google Patents
光学式エンコーダ、及び、そのレンズ固定機構 Download PDFInfo
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- JP6002458B2 JP6002458B2 JP2012132315A JP2012132315A JP6002458B2 JP 6002458 B2 JP6002458 B2 JP 6002458B2 JP 2012132315 A JP2012132315 A JP 2012132315A JP 2012132315 A JP2012132315 A JP 2012132315A JP 6002458 B2 JP6002458 B2 JP 6002458B2
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- lens
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- housing
- optical
- optical system
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- 230000003287 optical effect Effects 0.000 title claims description 73
- 230000007246 mechanism Effects 0.000 title claims description 6
- 238000001514 detection method Methods 0.000 claims description 14
- 238000003384 imaging method Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 238000003491 array Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- HIZCTWCPHWUPFU-UHFFFAOYSA-N Glycerol tribenzoate Chemical compound C=1C=CC=CC=1C(=O)OCC(OC(=O)C=1C=CC=CC=1)COC(=O)C1=CC=CC=C1 HIZCTWCPHWUPFU-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
- G01D5/34715—Scale reading or illumination devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Transform (AREA)
Description
12…2トラックスケール
20…検出ヘッド
22…入側レンズアレイ
23…接着面
24…出側レンズアレイ
26…筐体
30…レンズホルダ
32…基準ピン
22A、24A…ボス
26A、30A…ボス孔
26B、30B…長穴
26C、28A、28B、30C…基準ピン用ボス孔
26D…取り付け部
30D…基準ピン用長穴
P1…中心対称面
P2…体積2等分面
Claims (3)
- スケール上のトラックを、レンズとアパーチャ板を有する結像光学系を用いて受光素子に結像して検出する光学式エンコーダにおいて、
光軸を挟んで両側にボスを一体成型したプラスチックレンズと、
レンズ用ボス孔と基準ピン用ボス孔とが中心対称面上に設けられ、取り付け部が対称的に設けられた筐体と、
アパーチャ開口を挟んで両側に基準ピン用ボス孔が設けられたアパーチャ板と、
レンズ用ボス孔と基準ピン用ボス孔が中心対称面上に設けられたレンズホルダと、
該レンズホルダ及びアパーチャ板を前記筐体に対して位置決めするための基準ピンとを有し、
前記ボス及び基準ピンを基準として、光学系の光軸を合わせるようにされた検出ヘッドを備えると共に、前記プラスチックレンズの筐体又はレンズホルダに対する固定面を、前記プラスチックレンズの体積を2等分する面上に設けたことを特徴とする光学式エンコーダ。 - 前記トラックが複数設けられ、前記プラスチックレンズが、各トラックに対応する複数のレンズが並設されたレンズアレイとされていることを特徴とする請求項1に記載の光学式エンコーダ。
- プラスチックレンズの筐体又はレンズホルダに対する固定面を、前記プラスチックレンズの体積を2等分する面上に設けたことを特徴とする光学式エンコーダのレンズ固定機構。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012132315A JP6002458B2 (ja) | 2012-06-11 | 2012-06-11 | 光学式エンコーダ、及び、そのレンズ固定機構 |
EP13170340.7A EP2674730B1 (en) | 2012-06-11 | 2013-06-04 | Optical encoder and lens fixing mechanism thereof |
US13/913,025 US9097560B2 (en) | 2012-06-11 | 2013-06-07 | Optical encoder including scale having track and detection head for detecting the track |
CN201310231668.2A CN103487075B (zh) | 2012-06-11 | 2013-06-09 | 光学编码器及其透镜固定机构 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012132315A JP6002458B2 (ja) | 2012-06-11 | 2012-06-11 | 光学式エンコーダ、及び、そのレンズ固定機構 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013257186A JP2013257186A (ja) | 2013-12-26 |
JP6002458B2 true JP6002458B2 (ja) | 2016-10-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012132315A Active JP6002458B2 (ja) | 2012-06-11 | 2012-06-11 | 光学式エンコーダ、及び、そのレンズ固定機構 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9097560B2 (ja) |
EP (1) | EP2674730B1 (ja) |
JP (1) | JP6002458B2 (ja) |
CN (1) | CN103487075B (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10520710B2 (en) * | 2015-05-28 | 2019-12-31 | Mitutoyo Corporation | Telecentric optical apparatus |
JP6883939B2 (ja) | 2015-09-14 | 2021-06-09 | 株式会社ミツトヨ | 光電式エンコーダ |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4662735A (en) * | 1985-01-16 | 1987-05-05 | Minolta Camera Kabushiki Kaisha | Plastic lens elements supporting structure |
JPH07119865B2 (ja) * | 1985-01-16 | 1995-12-20 | ミノルタ株式会社 | プラスチックレンズの取り付け構造 |
US5233382A (en) * | 1991-04-03 | 1993-08-03 | Fuji Photo Film Company, Ltd. | Range finding device unaffected by environmental conditions |
JPH09281374A (ja) * | 1996-04-11 | 1997-10-31 | Canon Inc | 光学系鏡筒におけるレンズ保持方法並びに光学系鏡筒及びそれを用いた光学機器 |
JPH11271097A (ja) * | 1998-03-25 | 1999-10-05 | Citizen Watch Co Ltd | 相対変位測定装置 |
JP3743426B2 (ja) * | 2002-02-13 | 2006-02-08 | オムロン株式会社 | 光学式エンコーダ |
DE10229246B4 (de) | 2002-06-28 | 2004-05-27 | Stegmann Gmbh & Co. Kg | Optoelektronische Winkelmessgerät sowie Verfahren zu dessen Herstellung |
US6867412B2 (en) * | 2002-11-12 | 2005-03-15 | Mitutoyo Corporation | Scale structures and methods usable in an absolute position transducer |
CN2618179Y (zh) * | 2003-05-16 | 2004-05-26 | 金志良 | 激光准直光源 |
US6905258B2 (en) * | 2003-08-27 | 2005-06-14 | Mitutoyo Corporation | Miniature imaging encoder readhead using fiber optic receiver channels |
JP5186091B2 (ja) | 2006-06-23 | 2013-04-17 | 株式会社ミツトヨ | 光電式エンコーダ |
JP2008003466A (ja) * | 2006-06-26 | 2008-01-10 | Mitsutoyo Corp | レンズ光学系及び光電式エンコーダ |
JP2008003014A (ja) | 2006-06-26 | 2008-01-10 | Matsushita Electric Ind Co Ltd | 超音波検査方法と超音波検査装置 |
JP3971784B1 (ja) * | 2006-08-29 | 2007-09-05 | シャープ株式会社 | 光学式エンコーダおよびそれを用いた電子機器 |
JP5457742B2 (ja) | 2009-07-01 | 2014-04-02 | 株式会社ミツトヨ | 光電式エンコーダ |
JP2011059055A (ja) | 2009-09-14 | 2011-03-24 | Mitsutoyo Corp | 光電式エンコーダ |
JP2012032295A (ja) | 2010-07-30 | 2012-02-16 | Mitsutoyo Corp | 光電式エンコーダ |
-
2012
- 2012-06-11 JP JP2012132315A patent/JP6002458B2/ja active Active
-
2013
- 2013-06-04 EP EP13170340.7A patent/EP2674730B1/en active Active
- 2013-06-07 US US13/913,025 patent/US9097560B2/en active Active
- 2013-06-09 CN CN201310231668.2A patent/CN103487075B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
EP2674730A2 (en) | 2013-12-18 |
US9097560B2 (en) | 2015-08-04 |
US20130327930A1 (en) | 2013-12-12 |
EP2674730B1 (en) | 2016-11-23 |
CN103487075A (zh) | 2014-01-01 |
JP2013257186A (ja) | 2013-12-26 |
EP2674730A3 (en) | 2015-01-28 |
CN103487075B (zh) | 2017-07-28 |
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