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ENCODER, PRINTER, AND ROBOT | CODIERER, DRUCKER UND ROBOTER | CODEUR, IMPRIMANTE ET ROBOT

Patentnummer:EP3396328B1
IPC Hauptklasse:G01D000534
Anmelder:Seiko Epson Corporation (0)
4-1, Nishishinjuku 2-chome, ; Shinjuku-ku, Tokyo 163-0811, JP
Erfinder:
Anmeldung:24.04.18
Offenlegung:25.04.17
Patenterteilung:19.08.20

Abstract / Hauptanspruch
An encoder includes an optical scale including a scale portion that is constituted with a polarizer, a light emitting portion which emits light, an optical element unit which divides the light into first light and second light and makes the first and second lights incident onto the scale portion, and a light receiving portion which receives the first light and the second light from the scale unit and outputs a signal corresponding to intensities of the received first light and second light, and in which the first light and the second light overlap each other within a plane of the scale portion.

EP3396328B1


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