IN171487B - - Google Patents
Info
- Publication number
- IN171487B IN171487B IN118/CAL/89A IN118CA1989A IN171487B IN 171487 B IN171487 B IN 171487B IN 118CA1989 A IN118CA1989 A IN 118CA1989A IN 171487 B IN171487 B IN 171487B
- Authority
- IN
- India
Links
Classifications
-
- 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
- G01D5/36—Forming the light into pulses
- G01D5/38—Forming the light into pulses by diffraction gratings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
- Length Measuring Devices By Optical Means (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN49CA1992 IN172570B (es) | 1989-02-08 | 1992-01-27 | |
IN48CA1992 IN172929B (es) | 1989-02-08 | 1992-01-27 | |
IN583CA1992 IN174120B (es) | 1989-02-08 | 1992-08-11 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2203188 | 1988-02-22 | ||
JP1988130027U JPH07888Y2 (ja) | 1988-02-22 | 1988-10-04 | 光学式変位検出器 |
Publications (1)
Publication Number | Publication Date |
---|---|
IN171487B true IN171487B (es) | 1992-10-31 |
Family
ID=26359189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN118/CAL/89A IN171487B (es) | 1988-02-22 | 1989-02-08 |
Country Status (6)
Country | Link |
---|---|
US (2) | US5026164A (es) |
JP (1) | JPH07888Y2 (es) |
CN (1) | CN1015407B (es) |
DE (1) | DE3904898C2 (es) |
GB (1) | GB2216256B (es) |
IN (1) | IN171487B (es) |
Families Citing this family (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2239088B (en) * | 1989-11-24 | 1994-05-25 | Ricoh Kk | Optical movement measuring method and apparatus |
US5204524A (en) * | 1991-03-22 | 1993-04-20 | Mitutoyo Corporation | Two-dimensional optical encoder with three gratings in each dimension |
US5198663A (en) * | 1991-04-03 | 1993-03-30 | Mitutoyo Corporation | Angular velocity sensor with displacement scale and sensor means |
DE4206544A1 (de) * | 1992-03-02 | 1993-09-09 | Lpkf Cad Cam Systeme In Thueri | Zweikoordinaten-wegmesssystem |
US5390022A (en) | 1992-04-07 | 1995-02-14 | Canon Kabushiki Kaisha | Displacement information detection apparatus for receiving a divergent light beam |
WO1993021639A1 (en) * | 1992-04-09 | 1993-10-28 | Mitutoyo Corporation | X-y table apparatus |
JPH06160114A (ja) * | 1992-11-26 | 1994-06-07 | Ono Sokki Co Ltd | エンコーダ |
JP3210111B2 (ja) * | 1992-12-24 | 2001-09-17 | キヤノン株式会社 | 変位検出装置 |
JPH06194123A (ja) * | 1992-12-24 | 1994-07-15 | Canon Inc | 変位検出装置 |
JP3005131B2 (ja) * | 1992-12-28 | 2000-01-31 | キヤノン株式会社 | 変位検出装置 |
US5652426A (en) * | 1993-04-19 | 1997-07-29 | Ricoh Company, Ltd. | Optical encoder having high resolution |
DE4323712C2 (de) * | 1993-07-15 | 1997-12-11 | Heidenhain Gmbh Dr Johannes | Lichtelektrische Längen- oder Winkelmeßeinrichtung |
JP2965444B2 (ja) * | 1993-10-01 | 1999-10-18 | 株式会社ミツトヨ | 定圧型測定機 |
JP3196459B2 (ja) * | 1993-10-29 | 2001-08-06 | キヤノン株式会社 | ロータリーエンコーダ |
JP3256628B2 (ja) * | 1994-05-23 | 2002-02-12 | 株式会社リコー | エンコーダ装置 |
JP3808516B2 (ja) * | 1994-12-27 | 2006-08-16 | シグマテック株式会社 | 位置決め装置 |
JPH08178702A (ja) * | 1994-12-27 | 1996-07-12 | Canon Inc | 光学式センサ |
DE19527287C2 (de) * | 1995-07-26 | 2000-06-29 | Heidenhain Gmbh Dr Johannes | Fotoelektrisches Weg- und Winkelmeßsystem zum Messen der Verschiebung zweier Objekte zueinander |
JP3631551B2 (ja) * | 1996-01-23 | 2005-03-23 | 株式会社ミツトヨ | 光学式エンコーダ |
US5955727A (en) * | 1996-09-10 | 1999-09-21 | Harmonic Drive Systems, Inc. | Optical encoder having a shade layer made from photosensitive material |
JP3429961B2 (ja) * | 1996-11-05 | 2003-07-28 | 株式会社ミツトヨ | 光学式エンコーダ |
DE19726935B4 (de) * | 1997-06-25 | 2014-06-12 | Dr. Johannes Heidenhain Gmbh | Optische Positionsmeßeinrichtung |
DE19754595B4 (de) | 1997-12-10 | 2011-06-01 | Dr. Johannes Heidenhain Gmbh | Lichtelektrische Positionsmeßeinrichtung |
EP1028309B1 (de) | 1999-02-04 | 2003-04-16 | Dr. Johannes Heidenhain GmbH | Optische Positionsmesseinrichtung |
DE19918101A1 (de) * | 1999-04-22 | 2000-10-26 | Heidenhain Gmbh Dr Johannes | Optische Positionsmeßeinrichtung |
US6279248B1 (en) | 1999-09-22 | 2001-08-28 | Central Purchasing, Inc. | Digital measuring system having a multi-row encoder disk |
JP4658452B2 (ja) * | 2003-02-07 | 2011-03-23 | オリンパス株式会社 | 光学式エンコーダ |
DE112004002777B4 (de) * | 2004-03-03 | 2013-11-07 | Mitsubishi Denki K.K. | Optischer Codierer |
JP4880893B2 (ja) * | 2004-11-08 | 2012-02-22 | 株式会社ミツトヨ | 光電式エンコーダ |
EP1701138B1 (en) * | 2005-03-11 | 2016-02-17 | Mitutoyo Corporation | Photoelectric encoder |
CN100346186C (zh) * | 2005-09-13 | 2007-10-31 | 浙江大学 | 多模干涉型光学逻辑编码器 |
JP5113000B2 (ja) * | 2008-09-19 | 2013-01-09 | 株式会社ミツトヨ | 光電式エンコーダ |
JP5562076B2 (ja) * | 2010-03-10 | 2014-07-30 | キヤノン株式会社 | 光学式エンコーダおよび変位計測装置 |
WO2011112760A2 (en) * | 2010-03-11 | 2011-09-15 | Stratasys, Inc. | Optical encoder |
DE102011082570A1 (de) * | 2011-09-13 | 2013-03-14 | Dr. Johannes Heidenhain Gmbh | Rotatorische Positionsmesseinrichtung |
US8997369B2 (en) | 2012-05-15 | 2015-04-07 | Mitutoyo Corporation | Fast rotary drive for a handheld micrometer |
US8739428B2 (en) | 2012-07-03 | 2014-06-03 | Mitutoyo Corporation | Constant force spring actuator for a handheld micrometer |
US9377282B2 (en) | 2013-09-03 | 2016-06-28 | Mitutoyo Corporation | Method for validating a workpiece measurement in a dimensional metrology hand tool |
CN111089612B (zh) * | 2014-09-24 | 2022-06-21 | 原相科技股份有限公司 | 光学传感器及光学感测系统 |
US9482509B2 (en) | 2014-12-12 | 2016-11-01 | Mitutoyo Corporation | Ergonomic micrometer including two modes of adjustment |
CN104783762A (zh) * | 2015-04-23 | 2015-07-22 | 天津大学 | 一种位置正弦波频率编码的成像光测量装置 |
US9689715B2 (en) * | 2015-05-19 | 2017-06-27 | Mitutoyo Corporation | Light source array used in an illumination portion of an optical encoder |
JP6664155B2 (ja) | 2015-06-11 | 2020-03-13 | 株式会社ミツトヨ | 光学式エンコーダ |
CN105547162A (zh) * | 2016-01-18 | 2016-05-04 | 梁磊 | 一种集成式称重卷尺测量工具及其测量方法 |
CN105973287B (zh) * | 2016-05-04 | 2018-07-06 | 广东工业大学 | 一种多轨绝对光栅尺图像编码解码方法 |
US11422292B1 (en) * | 2018-06-10 | 2022-08-23 | Apple Inc. | Super-blazed diffractive optical elements with sub-wavelength structures |
US11754767B1 (en) | 2020-03-05 | 2023-09-12 | Apple Inc. | Display with overlaid waveguide |
US20210348954A1 (en) * | 2020-05-08 | 2021-11-11 | Canon Kabushiki Kaisha | Optical encoder and control apparatus |
WO2022197339A1 (en) | 2021-03-17 | 2022-09-22 | Apple Inc. | Waveguide-based transmitters with adjustable lighting |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3768911A (en) * | 1971-08-17 | 1973-10-30 | Keuffel & Esser Co | Electro-optical incremental motion and position indicator |
US3812352A (en) * | 1972-08-28 | 1974-05-21 | Itek Corp | Encoder readout system |
US3842261A (en) * | 1973-12-20 | 1974-10-15 | Itek Corp | Optical encoder using diffraction imagery in a reflective mode |
US4049965A (en) * | 1975-03-06 | 1977-09-20 | National Research Development Corporation | Measurement apparatus |
GB1516536A (en) * | 1975-08-22 | 1978-07-05 | Ferranti Ltd | Measuring apparatus |
DE2826213B2 (de) * | 1978-06-15 | 1980-06-04 | Dr. Johannes Heidenhain Gmbh, 8225 Traunreut | Photoelektrisches inkrementales Längen- und Winkelmeßsystem |
FR2433949A1 (fr) * | 1978-08-25 | 1980-03-21 | Commissariat Energie Atomique | Substrat hydrophobe apte a liberer une substance chimique |
JPS57157115A (en) * | 1981-03-24 | 1982-09-28 | Mitsutoyo Mfg Co Ltd | Photoelectric type encoder |
JPS57157118A (en) * | 1981-03-24 | 1982-09-28 | Mitsutoyo Mfg Co Ltd | Photoelectric type displacement detecting device |
GB8413955D0 (en) * | 1984-05-31 | 1984-07-04 | Pa Consulting Services | Displacement measuring apparatus |
JPS6142416U (ja) * | 1985-07-04 | 1986-03-19 | 株式会社ミツトヨ | 光電型エンコ−ダ |
GB8615196D0 (en) * | 1986-06-21 | 1986-07-23 | Renishaw Plc | Opto-electronic scale reading apparatus |
GB2195179B (en) * | 1986-09-11 | 1991-05-15 | Synergy Computer Graphics | Registration system for a moving substrate |
-
1988
- 1988-10-04 JP JP1988130027U patent/JPH07888Y2/ja not_active Expired - Lifetime
-
1989
- 1989-02-08 IN IN118/CAL/89A patent/IN171487B/en unknown
- 1989-02-10 US US07/308,465 patent/US5026164A/en not_active Expired - Lifetime
- 1989-02-17 DE DE3904898A patent/DE3904898C2/de not_active Expired - Fee Related
- 1989-02-20 GB GB8903837A patent/GB2216256B/en not_active Expired - Fee Related
- 1989-02-22 CN CN89101853.0A patent/CN1015407B/zh not_active Expired
-
1990
- 1990-12-27 US US07/634,545 patent/US5067816A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07888Y2 (ja) | 1995-01-11 |
US5067816A (en) | 1991-11-26 |
DE3904898A1 (de) | 1989-08-31 |
GB2216256A (en) | 1989-10-04 |
GB8903837D0 (en) | 1989-04-05 |
JPH01180615U (es) | 1989-12-26 |
GB2216256B (en) | 1992-08-19 |
DE3904898C2 (de) | 1997-11-27 |
CN1015407B (zh) | 1992-02-05 |
US5026164A (en) | 1991-06-25 |
CN1036633A (zh) | 1989-10-25 |