JP6407502B1 - アブソリュートエンコーダ - Google Patents
アブソリュートエンコーダ Download PDFInfo
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- JP6407502B1 JP6407502B1 JP2018540177A JP2018540177A JP6407502B1 JP 6407502 B1 JP6407502 B1 JP 6407502B1 JP 2018540177 A JP2018540177 A JP 2018540177A JP 2018540177 A JP2018540177 A JP 2018540177A JP 6407502 B1 JP6407502 B1 JP 6407502B1
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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
- 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
-
- 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
- G01D5/34776—Absolute encoders with analogue or digital scales
-
- 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
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Abstract
Description
図1は、本発明の実施の形態1にかかるアブソリュートエンコーダの構成を示す図である。アブソリュートエンコーダ1は、測定対象物である回転体の回転角度を検出する装置であり、光学式スケール2と、モジュールパッケージ300と、制御部4とを備えている。アブソリュートエンコーダ1が検出する回転角度は、絶対回転角度である。なお、図1では、光学式スケール2に対向する側の面であるモジュールパッケージ300の上面を下側に図示し、モジュールパッケージ300の底面を上側に図示している。
2×tanθ1×L3>L4・・・(1)
の関係が成立すれば、受光素子32と光透過性樹脂33Aとの間で多重反射した光が受光面320に入射することを防ぐことができる。なお、上述したように、角度θ1は、距離L1,L2,L3を用いて算出できるので、上述の(1)の関係は、
(L2/L1)×L3>L4・・・(2)
に書き換えることができる。
つぎに、図17および図18を用いてこの発明の実施の形態2について説明する。実施の形態2では、光透過性樹脂の上面を受光素子32の受光面320に対して傾斜させることによって、光透過性樹脂で反射された光線が受光素子32の受光面320に入射することを抑制する。
Claims (5)
- 光学パターンを有する光学式スケールと、
前記光学式スケールに光を照射する発光素子および前記光学式スケールからの反射光を受光する受光素子を光透過性樹脂で覆ったモジュールパッケージと、
前記受光素子が前記反射光に応じて出力する信号に基づいて、前記光学式スケールの絶対回転角度を演算する制御部と、
を備え、
前記モジュールパッケージは、
前記受光素子の前記発光素子側の端部に照射される光線の角度をθ1とし、前記受光素子の受光面から前記光透過性樹脂の上面までの距離をL3とし、前記受光素子の前記発光素子側の端部から前記受光面の前記発光素子側とは反対側の端部までの距離をL4とした場合に、2×tanθ1×L3>L4が成り立つように形成されている、
ことを特徴とするアブソリュートエンコーダ。 - 前記モジュールパッケージには、
前記光透過性樹脂の前記光学式スケールに対向する面で露出し且つ前記発光素子の発光面の中心と、前記受光素子の受光面の中心との中間位置を通る遮光部が配置されている、
ことを特徴とする請求項1に記載のアブソリュートエンコーダ。 - 前記光透過性樹脂は、前記光学式スケールに対向する面である上面が、前記受光素子の受光面に対して傾斜している、
ことを特徴とする請求項1または2に記載のアブソリュートエンコーダ。 - 前記モジュールパッケージは、前記発光素子および前記受光素子が実装されるパッケージ基板をさらに有し、
前記遮光部は、前記パッケージ基板が掘り込まれた領域および前記光透過性樹脂が掘り込まれた領域に配置されている、
ことを特徴とする請求項2に記載のアブソリュートエンコーダ。 - 前記パッケージ基板は、ガラエポ基板であり、
前記光透過性樹脂および前記遮光部は、エポキシ系樹脂である、
ことを特徴とする請求項4に記載のアブソリュートエンコーダ。
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PCT/JP2018/006018 WO2019162998A1 (ja) | 2018-02-20 | 2018-02-20 | アブソリュートエンコーダ |
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JP6407502B1 true JP6407502B1 (ja) | 2018-10-17 |
JPWO2019162998A1 JPWO2019162998A1 (ja) | 2020-04-02 |
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JP (1) | JP6407502B1 (ja) |
KR (1) | KR102037786B1 (ja) |
CN (1) | CN110392820B (ja) |
TW (1) | TWI660159B (ja) |
WO (1) | WO2019162998A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPWO2020246159A1 (ja) * | 2019-06-04 | 2020-12-10 | ||
JP2021076452A (ja) * | 2019-11-07 | 2021-05-20 | キヤノンプレシジョン株式会社 | 反射型センサおよびこれを備える光学式エンコーダ |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2020208773A1 (ja) * | 2019-04-11 | 2020-10-15 | 三菱電機株式会社 | エンコーダ |
JP2023143023A (ja) * | 2022-03-25 | 2023-10-06 | 浜松ホトニクス株式会社 | エンコーダ用光モジュール、エンコーダ、及びエンコーダ用光モジュールの製造方法 |
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- 2018-02-20 JP JP2018540177A patent/JP6407502B1/ja active Active
- 2018-02-20 KR KR1020197004840A patent/KR102037786B1/ko active IP Right Grant
- 2018-02-20 WO PCT/JP2018/006018 patent/WO2019162998A1/ja active Application Filing
- 2018-02-20 CN CN201880003297.3A patent/CN110392820B/zh active Active
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JP2021076452A (ja) * | 2019-11-07 | 2021-05-20 | キヤノンプレシジョン株式会社 | 反射型センサおよびこれを備える光学式エンコーダ |
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TW201934963A (zh) | 2019-09-01 |
JPWO2019162998A1 (ja) | 2020-04-02 |
TWI660159B (zh) | 2019-05-21 |
CN110392820B (zh) | 2020-05-01 |
KR102037786B1 (ko) | 2019-10-29 |
CN110392820A (zh) | 2019-10-29 |
KR20190102172A (ko) | 2019-09-03 |
WO2019162998A1 (ja) | 2019-08-29 |
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