TW200628764A - Light receiving device for optical encoder, and optical encoder - Google Patents
Light receiving device for optical encoder, and optical encoderInfo
- Publication number
- TW200628764A TW200628764A TW094134028A TW94134028A TW200628764A TW 200628764 A TW200628764 A TW 200628764A TW 094134028 A TW094134028 A TW 094134028A TW 94134028 A TW94134028 A TW 94134028A TW 200628764 A TW200628764 A TW 200628764A
- Authority
- TW
- Taiwan
- Prior art keywords
- optical encoder
- receiving device
- light receiving
- photodiodes
- light shielding
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title abstract 3
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
- G01D5/347—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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004329704A JP2006138775A (ja) | 2004-11-12 | 2004-11-12 | 光学式エンコーダ用受光素子及び光学式エンコーダ |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200628764A true TW200628764A (en) | 2006-08-16 |
TWI303709B TWI303709B (en) | 2008-12-01 |
Family
ID=36385281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW094134028A TWI303709B (en) | 2004-11-12 | 2005-09-29 | Light receiving device for optical encoder, and optical encoder |
Country Status (4)
Country | Link |
---|---|
US (1) | US7145128B2 (zh) |
JP (1) | JP2006138775A (zh) |
CN (1) | CN100420919C (zh) |
TW (1) | TWI303709B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI456174B (zh) * | 2011-10-12 | 2014-10-11 | Hermes Microvision Inc | 相位偵測器 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006153753A (ja) * | 2004-11-30 | 2006-06-15 | Olympus Corp | エンコーダ |
GB2430123B (en) * | 2005-09-09 | 2008-01-23 | Toshiba Res Europ Ltd | A quantum communication system |
JP2008076064A (ja) * | 2006-09-19 | 2008-04-03 | Olympus Corp | 光学式エンコーダの信号処理回路 |
KR101030263B1 (ko) * | 2006-11-30 | 2011-04-22 | 고쿠리츠 다이가꾸 호우진 시즈오까 다이가꾸 | 반도체 거리 측정 소자 및 고체 촬상 장치 |
JP2008286631A (ja) * | 2007-05-17 | 2008-11-27 | Sharp Corp | 光学式エンコーダおよびそれを備える電子機器 |
US8097842B2 (en) * | 2009-05-31 | 2012-01-17 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | High resolution single track optical encoder |
JP5651982B2 (ja) * | 2010-03-31 | 2015-01-14 | ソニー株式会社 | 固体撮像装置、固体撮像装置の製造方法、及び電子機器 |
JP5974329B2 (ja) * | 2012-02-15 | 2016-08-23 | 株式会社ミツトヨ | 光電式エンコーダ |
US11237024B2 (en) * | 2018-10-08 | 2022-02-01 | Pixart Imaging Inc. | Optical encoder with covered photo diode |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4691101A (en) * | 1985-06-19 | 1987-09-01 | Hewlett-Packard Company | Optical positional encoder comprising immediately adjacent detectors |
US4904861A (en) * | 1988-12-27 | 1990-02-27 | Hewlett-Packard Company | Optical encoder using sufficient inactive photodetectors to make leakage current equal throughout |
JP3375578B2 (ja) | 1999-09-28 | 2003-02-10 | シャープ株式会社 | 光電式エンコーダ |
JP2004309387A (ja) * | 2003-04-09 | 2004-11-04 | Toshiba Corp | 光学式エンコーダ |
JP4350417B2 (ja) * | 2003-05-13 | 2009-10-21 | 株式会社ミツトヨ | 光電式エンコーダ |
-
2004
- 2004-11-12 JP JP2004329704A patent/JP2006138775A/ja active Pending
-
2005
- 2005-02-18 US US11/060,546 patent/US7145128B2/en not_active Expired - Fee Related
- 2005-09-29 TW TW094134028A patent/TWI303709B/zh not_active IP Right Cessation
- 2005-11-14 CN CNB2005101254203A patent/CN100420919C/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI456174B (zh) * | 2011-10-12 | 2014-10-11 | Hermes Microvision Inc | 相位偵測器 |
Also Published As
Publication number | Publication date |
---|---|
TWI303709B (en) | 2008-12-01 |
US7145128B2 (en) | 2006-12-05 |
CN1773222A (zh) | 2006-05-17 |
CN100420919C (zh) | 2008-09-24 |
US20060102832A1 (en) | 2006-05-18 |
JP2006138775A (ja) | 2006-06-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |