JPH0312118U - - Google Patents

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Publication number
JPH0312118U
JPH0312118U JP7238389U JP7238389U JPH0312118U JP H0312118 U JPH0312118 U JP H0312118U JP 7238389 U JP7238389 U JP 7238389U JP 7238389 U JP7238389 U JP 7238389U JP H0312118 U JPH0312118 U JP H0312118U
Authority
JP
Japan
Prior art keywords
light
optical fiber
reflection section
light reflection
numerical aperture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7238389U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP7238389U priority Critical patent/JPH0312118U/ja
Priority to US07/540,006 priority patent/US5038031A/en
Priority to DE4019794A priority patent/DE4019794C2/en
Priority to KR1019900009298A priority patent/KR910002136A/en
Publication of JPH0312118U publication Critical patent/JPH0312118U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案による光反射型ロータリーエン
コーダを示す斜視図、第２図はその要部を示す拡
大図、第３図及び第４図は従来の光反射型ロータ
リーエンコーダを示す断面図である。 符号の説明、１…パルススケール、２…光反射
部、３…発光用光フアイバ、４…受光用光フアイ
バ、５…ホトセンサ、６…ハウジング。 Fig. 1 is a perspective view showing a light reflection type rotary encoder according to the present invention, Fig. 2 is an enlarged view showing its main parts, and Figs. 3 and 4 are sectional views showing a conventional light reflection type rotary encoder. . Explanation of symbols: 1... Pulse scale, 2... Light reflecting section, 3... Optical fiber for light emission, 4... Optical fiber for light reception, 5... Photo sensor, 6... Housing.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 円周方向に沿つてコードパターンＣを成す光反
射部２が所定間隔で形成されたパルススケール１
の回転により、前記光反射部２に照射される光が
断続されて、その回転角に応じた光パルス信号を
出力するように成された光反射型ロータリーエン
コーダにおいて、前記パルススケール１の片面側
に対向して、その光反射部２に光を照射する発光
用光フアイバ３の端面３ａと、当該光反射部２か
ら反射した光を受光する受光用光フアイバ４の端
面４ａが配され、その状態で、これら両光フアイ
バ３，４がハウジング６に一体的に取り付けて固
定されると共に、発光用光フアイバ３が、小径で
且つ開口数ＮＡの低い光フアイバに選定され、受
光用光フアイバ４が、発光用光フアイバ３よりも
大径で且つ開口数ＮＡの高い光フアイバに選定さ
れていることを特徴とする光反射型ロータリーエ
ンコーダ。 A pulse scale 1 in which light reflecting portions 2 forming a code pattern C are formed at predetermined intervals along the circumferential direction.
In a light reflection type rotary encoder, the light irradiated to the light reflection section 2 is interrupted by the rotation of the light reflection section 2, and a light pulse signal corresponding to the rotation angle is outputted. An end surface 3a of a light-emitting optical fiber 3 that irradiates light to the light reflection section 2 and an end surface 4a of a light-receiving optical fiber 4 that receives light reflected from the light reflection section 2 are arranged opposite to each other. In this state, both of these optical fibers 3 and 4 are integrally attached and fixed to the housing 6, and the light emitting optical fiber 3 is selected as an optical fiber with a small diameter and a low numerical aperture NA, and the light receiving optical fiber 4 is selected as an optical fiber with a small diameter and a low numerical aperture NA. A light reflective rotary encoder characterized in that an optical fiber having a larger diameter and a higher numerical aperture NA than the light emitting optical fiber 3 is selected.
JP7238389U 1989-06-22 1989-06-22 Pending JPH0312118U (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7238389U JPH0312118U (en) 1989-06-22 1989-06-22
US07/540,006 US5038031A (en) 1989-06-22 1990-06-19 Optical rotary encoder having large and small numerical aperture fibers
DE4019794A DE4019794C2 (en) 1989-06-22 1990-06-21 Optical angle encoder
KR1019900009298A KR910002136A (en) 1989-06-22 1990-06-22 Optical Rotary Encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7238389U JPH0312118U (en) 1989-06-22 1989-06-22

Publications (1)

Publication Number Publication Date
JPH0312118U true JPH0312118U (en) 1991-02-07

Family

ID=31610269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7238389U Pending JPH0312118U (en) 1989-06-22 1989-06-22

Country Status (1)

Country Link
JP (1) JPH0312118U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007191890A (en) * 2006-01-18 2007-08-02 Sekisui Chem Co Ltd Rainwater storage and infiltration facility
JP2011106200A (en) * 2009-11-19 2011-06-02 Maeda Kogyo Kk Rainwater cleaning device and rainwater cleaning system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137816A (en) * 1983-01-27 1984-08-08 Natl Aerospace Lab Reflection type photo detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137816A (en) * 1983-01-27 1984-08-08 Natl Aerospace Lab Reflection type photo detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007191890A (en) * 2006-01-18 2007-08-02 Sekisui Chem Co Ltd Rainwater storage and infiltration facility
JP2011106200A (en) * 2009-11-19 2011-06-02 Maeda Kogyo Kk Rainwater cleaning device and rainwater cleaning system

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