Encoder, motor with encoder, and servo system

An optical module includes: a light source configured to emit diffusion light to tracks; one light receiving array and another light receiving array which are arranged across the light source in a width direction substantially vertical to the measurement direction; a light receiving array arranged b...

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Bibliographische Detailangaben
Hauptverfasser:	Harada Masanobu, Yoshidomi Shiro, Arinaga Yuji, Yoshida Yasushi, Takada Hiroshi, Kondo Hiroki, Matsutani Yasuhiro, Murokita Ikuma
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	An optical module includes: a light source configured to emit diffusion light to tracks; one light receiving array and another light receiving array which are arranged across the light source in a width direction substantially vertical to the measurement direction; a light receiving array arranged between the one light receiving array and the light source, and configured to receive light which is reflected at the tracks having a first incremental pattern; and a light receiving array arranged between the another first light receiving array and the light source, and configured to receive light which is reflected at the tracks having a second incremental pattern which pitch is longer than a pitch of the first incremental pattern.