光电编码器英文资料Word文件下载.docx

光电编码器英文资料Word文件下载.docx

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HiroatsuMori 

Agents:

RANKIN,HILL&

CLARKLLP 

Assignees:

Origin:

WILLOUGHBY,OHUS 

IPC8Class:

AG01D5347FI 

USPCClass:

Publicationdate:

02/10/2011 

Patentapplicationnumber:

20110031382

Abstract:

Aphotoelectricencoderincludes:

ascale;

adetectionhead;

fibersthroughwhichlightthatistobeirradiatedonthescaleandlightreflectedbythescalepropagates;

firstandsecondcableseachhavingaspaceinwhichthefibersarepartiallydisposed;

andacasethatenclosesalightsourcethatsupplieslighttooneofthefibersandalight-sensitiveelementthatreceivesthereflectedlightpropagatingthroughtheothersofthefibersandconvertsthereceivedlightintoanelectricsignal.Thefirstcable,thesecondcable,andthecasearedisposedinthisorderinthedirectionofpropagationofthereflectedlight.Thepositionsofthefibersarefixedrelativetooneanotherinsidethefirstcableinthedirectionorthogonaltothedirectionoflengthofthefibersandvariablerelativetooneanotherinsidethesecondcableintheorthogonaldirection.

Claims:

1. 

Aphotoelectricencodercomprising:

ascalethathasadiffractiongratingformedatapredeterminedpitchinameasurementaxisdirection;

adetectionheadthatirradiatesthescalewithlightandreceiveslightreflectedbythescale;

apluralityoffibersthroughwhichthelightthatistobeirradiatedonthescaleandthelightreflectedbythescalepropagates;

afirstcablethathasaninnerspaceinwhichthepluralityoffibersispartiallydisposed;

asecondcablethathasaninnerspaceinwhichthepluralityoffibersispartiallydisposed;

andaframeunitinsidewhichalightsourceandalight-sensitiveelementareprovided,thelightsourcesupplyinglighttothepluralityoffibersoratleastoneofthepluralityoffibers,thelight-sensitiveelementreceivingthereflectedlightpropagatingthroughthepluralityoffibersortheothersofthepluralityoffibersandconvertingthereceivedlightintoanelectricsignal,whereinthefirstcable,thesecondcable,andtheframeunitaredisposedinthisorderinadirectionofpropagationofthelightreflectedbythescalethroughthepluralityoffibersortheothersofthepluralityoffibers,thepluralityoffibersispartiallydisposedintheinnerspaceofthefirstcableinsuchamannerthatthepositionsofthefibersarefixedrelativetooneanotherinadirectionorthogonaltoadirectionoflengthofthefibers,andthepluralityoffibersispartiallydisposedintheinnerspaceofthesecondcableinsuchamannerthatthepositionsofthefibersarevariablerelativetooneanotherinthedirectionorthogonaltothedirectionofthelengthofthefibers. 

2. 

Thephotoelectricencoderaccordingtoclaim1,whereinthepluralityoffibersispartiallydisposedintheinnerspaceofthesecondcableinsuchamannerthatpositionsofthefibersarerandomrelativetooneanotherinthedirectionorthogonaltothedirectionofthelengthofthefibers. 

3. 

Thephotoelectricencoderaccordingtoclaim1,whereinthepluralityoffibersispartiallydisposedintheinnerspaceofthesecondcableinsuchamannerthateachofthefibershasslack. 

4. 

Thephotoelectricencoderaccordingtoclaim1,whereinthepluralityoffibersispartiallydisposedintheinnerspaceofthefirstcableinsuchamannerthateachtwoofthefibersoneofwhichisdisposedadjacenttotheotherinthedirectionorthogonaltothedirectionofthelengthofthefibersareincontactwitheachother. 

5. 

Thephotoelectricencoderaccordingtoclaim1,whereinaninsidediameterofthesecondcableislargerthananinsidediameterofthefirstcable. 

6. 

Thephotoelectricencoderaccordingtoclaim1,whereinthesecondcableismoreflexiblethanthefirstcable. 

7. 

Thephotoelectricencoderaccordingtoclaim1,whereinthesecondcablehasafirstconnectorprovidedatoneendinthedirectionofthelengthofthefibersandasecondconnectorprovidedattheotherendinthedirectionofthelengthofthefibers. 

8. 

Thephotoelectricencoderaccordingtoclaim7,whereinthefirstcablehasaconnectorthatcanbecoupledtothefirstconnector;

andtheframeunithasaconnectorthatcanbecoupledtothesecondconnector. 

9. 

Thephotoelectricencoderaccordingtoclaim7,whereinthesecondcablecomprisesapluralityofcablepieces;

eachofthecablepieceshasthefirstconnectorandthesecondconnector;

thefirstconnectorcanbecoupledtothesecondconnector;

andthefirstconnectorofonecablepieceofthesecondcableiscoupledtothesecondconnectorofanothercablepieceofthesecondcable. 

10. 

Thephotoelectricencoderaccordingtoclaim1,whereinthepluralityoffiberscomprisesalightemissionfiberthroug