patentverein.de - Patente
Patentethik
Überwachung
Beispielhaft
Trivial
Kurios
Unverständlich
Zurück Original-Dokument
Europäisches Patentamt

DISPLACEMENT DETECTING DEVICE | VERSCHIEBUNGSERKENNUNGSVORRICHTUNG | DISPOSITIF DE DÉTECTION DE DÉPLACEMENT

Patentnummer:EP3124923B1
IPC Hauptklasse:G01D000538
Anmelder:Mitutoyo Corporation (0)
20-1, Sakado 1-chome, ; Takatsu-ku, ; Kawasaki, Kanagawa 213-0012, JP
Erfinder:
Anmeldung:28.07.16
Offenlegung:28.07.15
Patenterteilung:12.09.18

Abstract / Hauptanspruch
A displacement detecting device (100) includes a main scale (110) and a detecting head unit (130). The detecting head unit (130) includes a light source, a light receiving unit (132), and an index scale group (140) that is disposed in the middle of a light path from the main scale (110) to the light receiving unit (132). The index scale group (140) includes two or more index scales including diffraction gratings, respectively. A positive s-th order diffracted light and a negative s-th order diffracted light of diffracted lights from the main scale are used as the signal lights. The displacement detecting device satisfies a first condition and a second condition, the first condition being expressed as follows: λ × (u1 - u2) × (mN ÷ g) = 2 × sinα, the second condition being expressed as follows:

EP3124923B1


Kommentare zu diesem Patent schicken Sie bitte an .
Datenschutzerklärung