Omron Corporation

Ikuo Takeda

Arata Nakamura

Kazuyoshi Kamekawa

Seiichi Manabe

Hirokazu Yauchi

Hiroshi Iguchi

Benjamain Davoult

Human information sensor

An optical encoder including a graduation plate inscribed with a graduation line along a predetermined direction and an optical reader for optically reading the graduation line on the graduation plate in which a corresponding electric signal is outputted from the optical reader in accordance with movement of the graduation plate and the optical reader relative to each other, the optical reader includes a light projecting optical system for irradiating light from a light projecting source to the graduation plate and a light receiving optical system for focusing light from the graduation plate to a light receiving portion and the light receiving optical system is constituted by a telecentric optical system to thereby enable to be fabricated at low cost by dispensing with high integrating accuracy.

Optical encoder having telecentric optical system

Growing community of inventors

Osaka, Japan

Ikuo Takeda