ENCODER AND ATTACHING METHOD

An encoder (10) includes: an emitter (40) that emits light; a rotary plate (20) that rotates and includes an annular region (26) that reflects the light emitted from the emitter (40), the annular region (26) being provided surrounding a rotation axis (A) of the rotary plate (20); and a light receive...

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Bibliographische Detailangaben
Hauptverfasser:	SHIRAISHI, Masaru, MURAKAMI, Kimihiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	An encoder (10) includes: an emitter (40) that emits light; a rotary plate (20) that rotates and includes an annular region (26) that reflects the light emitted from the emitter (40), the annular region (26) being provided surrounding a rotation axis (A) of the rotary plate (20); and a light receiver (50) that receives light emitted from the emitter (40) and arriving via the annular region (26). The light receiver (50) includes: a first set that includes a first light-receiving region (55) and a second light-receiving region (56) that are arranged side by side in a first direction (E) intersecting a rotation direction (C) of rotary plate (20); and a second set that includes a third light-receiving region (57) and a fourth light-receiving region (58) that are arranged side by side in a second direction (F) intersecting the rotation direction (C) and that is provided side by side with the first set in the rotation direction (C).