JP6039299B2 - エンコーダ、レンズ装置、および、カメラ - Google Patents
エンコーダ、レンズ装置、および、カメラ Download PDFInfo
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- JP6039299B2 JP6039299B2 JP2012176385A JP2012176385A JP6039299B2 JP 6039299 B2 JP6039299 B2 JP 6039299B2 JP 2012176385 A JP2012176385 A JP 2012176385A JP 2012176385 A JP2012176385 A JP 2012176385A JP 6039299 B2 JP6039299 B2 JP 6039299B2
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- 238000001514 detection method Methods 0.000 claims description 37
- 230000003287 optical effect Effects 0.000 claims description 32
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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
- G01D5/3473—Circular or rotary encoders
-
- 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
- G01D5/347—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
- G01D5/34792—Absolute encoders with analogue or digital scales with only digital scales or both digital and incremental scales
- G01D5/34794—Optical encoders using the Vernier principle, i.e. incorporating two or more tracks having a (n, n+1, ...) relationship
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lens Barrels (AREA)
- Studio Devices (AREA)
Description
26 駆動リング(円筒部)
27 連結キー(連結部)
35 フィルムスケール(スケール部)
36 センサヘッド(検出部の構成要素)
37 センサホルダ(検出部の構成要素)
38 ガイドコロ(支持部の構成要素)
44 センサフレキ(検出部の構成要素)
46 圧縮コイルバネ(支持部の構成要素)
Claims (8)
- ベース部と、
前記ベース部に対して円周方向に回転可能な円筒部と、
前記ベース部に対して前記円筒部を回転可能に支持するとともに、前記ベース部に対して回転可能な回転手段を有する少なくとも3つの支持部と、
前記円筒部に設けられ、前記少なくとも3つの支持部のうち互いに隣り合う2つの支持部の間の第1の範囲内で回転可能であるとともに、レンズユニットを回転させる部材と係合する連結部と、
スケール部と、
前記スケール部を用いて、前記ベース部に対する前記円筒部の位置を検出する検出部と、を有し、
前記検出部は、前記第1の範囲と異なる第2の範囲内に配置されている、ことを特徴とするエンコーダ。 - 前記連結部の位置と、前記検出部の位置とは、前記円筒部の中心に対して互いに対称であることを特徴とする請求項1に記載のエンコーダ。
- 前記少なくとも3つの支持部のうち少なくとも一つは、
前記回転手段を前記ベース部の方向に付勢する付勢手段と、を有することを特徴とする請求項1または2に記載のエンコーダ。 - 前記円筒部は、内径スライド型を用いて、該円筒部の内周壁が形成される射出成型品であり、
前記円筒部の前記内周壁のうち、前記少なくとも3つの支持部が前記円筒部の位置を規制する領域のそれぞれは、前記内径スライド型の1つのスライドコアにより形成されていることを特徴とする請求項1乃至3のいずれか1項に記載のエンコーダ。 - 前記円筒部の前記内周壁のうち、前記スケール部の検出範囲における面は、前記内径スライド型の1つのスライドコアにより形成されていることを特徴とする請求項4に記載のエンコーダ。
- 前記円筒部は、
前記スケール部を保持する固定保持部と、
前記円筒部の前記円周方向に移動可能に構成され、前記スケール部を保持するスケール保持部と、
前記スケール保持部を介して前記スケール部を前記固定保持部の側に向って付勢することによって、前記スケール部を前記円筒部の内周壁に取り付けるスケール付勢部と、を有する、ことを特徴とする請求項1乃至5のいずれか1項に記載のエンコーダ。 - 光軸方向に移動可能な前記レンズユニットと、
請求項1乃至6のいずれか1項に記載のエンコーダと、を備える、ことを特徴とするレンズ装置。 - 請求項7に記載のレンズ装置と、
前記レンズ装置からの被写体像の光電変換を行う撮像素子と、を備える、ことを特徴とするカメラ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012176385A JP6039299B2 (ja) | 2012-08-08 | 2012-08-08 | エンコーダ、レンズ装置、および、カメラ |
US13/959,852 US9121735B2 (en) | 2012-08-08 | 2013-08-06 | Encoder, lens apparatus, and camera capable of detecting position of object |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012176385A JP6039299B2 (ja) | 2012-08-08 | 2012-08-08 | エンコーダ、レンズ装置、および、カメラ |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2014035438A JP2014035438A (ja) | 2014-02-24 |
JP2014035438A5 JP2014035438A5 (ja) | 2015-09-24 |
JP6039299B2 true JP6039299B2 (ja) | 2016-12-07 |
Family
ID=50065936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012176385A Active JP6039299B2 (ja) | 2012-08-08 | 2012-08-08 | エンコーダ、レンズ装置、および、カメラ |
Country Status (2)
Country | Link |
---|---|
US (1) | US9121735B2 (ja) |
JP (1) | JP6039299B2 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6399799B2 (ja) * | 2014-05-12 | 2018-10-03 | キヤノン株式会社 | 光学機器および撮像装置 |
JP6486097B2 (ja) * | 2014-12-19 | 2019-03-20 | キヤノン株式会社 | 位置検出装置、レンズ装置、撮像システム、工作装置、位置検出方法、プログラム、および、記憶媒体 |
JP6602025B2 (ja) | 2015-03-03 | 2019-11-06 | キヤノン株式会社 | 光学機器 |
JP6584252B2 (ja) * | 2015-09-14 | 2019-10-02 | キヤノン株式会社 | 電子機器および撮像装置 |
EP3690544A4 (en) | 2017-09-30 | 2020-11-25 | Hangzhou Hikmicro Sensing Technology Co., Ltd. | IMAGING DEVICE AND LENS FOCUSING METHOD |
US10739552B2 (en) * | 2018-02-21 | 2020-08-11 | Panavision International, L.P. | Internally slotted cam for lens system |
JP6746629B2 (ja) * | 2018-03-13 | 2020-08-26 | キヤノン株式会社 | 回転力伝達装置、並びにそれを備えたレンズ装置および撮像装置 |
CN114174884B (zh) * | 2019-07-24 | 2023-08-01 | 富士胶片株式会社 | 镜筒 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4703176A (en) * | 1985-06-04 | 1987-10-27 | Plus Development Corporation | Compact polyphase optical position encoder |
JPH02253213A (ja) * | 1989-03-28 | 1990-10-12 | Canon Inc | レンズ鏡筒 |
JP3466680B2 (ja) * | 1993-10-26 | 2003-11-17 | キヤノン株式会社 | 光学式エンコーダ |
JP3809239B2 (ja) * | 1997-01-17 | 2006-08-16 | 株式会社Neomax | 寸法測定装置 |
JP2000289281A (ja) * | 1999-04-08 | 2000-10-17 | Seiko Epson Corp | リニアエンコーダ用スケールの取付け構造 |
JP5043318B2 (ja) * | 2005-08-12 | 2012-10-10 | キヤノン株式会社 | 光学機器 |
JP5044210B2 (ja) * | 2006-12-28 | 2012-10-10 | 株式会社タムロン | レンズ駆動装置 |
JP2009169052A (ja) | 2008-01-16 | 2009-07-30 | Canon Inc | レンズ鏡筒及びそれを有する撮像装置 |
JP2010054645A (ja) * | 2008-08-27 | 2010-03-11 | Ricoh Co Ltd | レンズ駆動装置およびカメラ |
JP5574696B2 (ja) * | 2009-12-21 | 2014-08-20 | キヤノン株式会社 | レンズ鏡筒 |
JP5574899B2 (ja) * | 2010-09-24 | 2014-08-20 | キヤノン株式会社 | ロータリーエンコーダ及びこれを備えた光学機器 |
JP2012122771A (ja) | 2010-12-06 | 2012-06-28 | Mitsutoyo Corp | 円筒型スケールの作製方法、円筒型スケール、及びロータリーエンコーダ |
US9052569B2 (en) * | 2011-06-23 | 2015-06-09 | Olympus Imaging Corp. | Optical instrument, and control method for optical instrument |
JP2013007906A (ja) * | 2011-06-24 | 2013-01-10 | Olympus Imaging Corp | レンズ鏡筒及びカメラシステム |
JP2013104920A (ja) * | 2011-11-10 | 2013-05-30 | Canon Inc | 光学素子駆動装置および光学機器 |
DE102011121021B4 (de) * | 2011-12-13 | 2022-12-01 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Bedieneinheit |
-
2012
- 2012-08-08 JP JP2012176385A patent/JP6039299B2/ja active Active
-
2013
- 2013-08-06 US US13/959,852 patent/US9121735B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20140043526A1 (en) | 2014-02-13 |
US9121735B2 (en) | 2015-09-01 |
JP2014035438A (ja) | 2014-02-24 |
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