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Encoder, lens apparatus, and camera | Kodierer, Linsenvorrichtung, und Kamera | Codeur, appareil avec lentille et caméra

Patentnummer:EP2657655B1
IPC Hauptklasse:G01D0005347
Anmelder:
Erfinder:Igaki, Masahiko (0)
; c/o Canon Kabushiki Kaisha, 30-2, Shimomaruko 3-chome, ; Ohta-ku, Tokyo, JP
Anmeldung:25.04.13
Offenlegung:27.04.12
Patenterteilung:13.03.19

Abstract / Hauptanspruch
An encoder (100) includes a cylindrical body (10), a sensor unit (7) configured to detect a displacement of the cylindrical body (10) in a circumferential direction of the cylindrical body (10), and a scale (2) that is attached to the cylindrical body (10) using a holder (12) and a holder (13) and that has a signal detection effective region (14) used to detect the displacement by the sensor unit (7), and a region (17) that has a stiffness smaller than a stiffness of the signal detection effective region (14) in the circumferential direction of the cylindrical body (10) is provided on an outside of the signal detection effective region (14) and on at least one side of the first holder (12) and the second holder (13).

EP2657655B1


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