Optical encoder

Details Optical encoder Optical encoder

Category

G - Physics

Subcategory

01

Subsubcategory

D

IPC codes

G01D 5/347 (2006.01)

Type

Patent

Patent number

CA 2726133

Description

The invention relates to optical encoders providing binary logic signals representing increments of relative position of two elements (10, 11) of the encoder, the two elements being mobile with respect to one another. The encoder comprises at least one pair (14, 15) formed of a luminous emitter (14e, 15e) and of a luminous detector (14r, 15r) which are secured to the fixed element, the emitter (14e, 15e) producing a luminous radiation that the detector (14r, 15r) can detect, and at least one mark (20) secured to the movable element (10), during the motion of the movable element (10) with respect to the fixed element (11), the mark (20) being able to place itself in the path of the luminous radiation so as to be detected by the detector (14r, 15r). According to the invention, the encoder furthermore comprises a plane printed circuit (13), secured to the fixed element (11) and on which the pair (14, 15) of emitter (14e, 15e) and of detector (14r, 15r) is arranged.

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