Title:
OPTICAL ENCODER
Document Type and Number:
WIPO Patent Application WO/2015/162987
Kind Code:
A1
Abstract:
An optical encoder includes: first, second, and third light-receiving elements (A, B, C) arranged in order and adjacent to each other; and a detection signal generator (50) for outputting a detection trigger (Ts) when the output level of the second light-receiving element (B) for which light incidence is delayed relative to the first light-receiving element (A) is higher than the output level of the first light-receiving element (A), and outputting a non-detection trigger (Te) when the output level of the third light-receiving element (C) for which light incidence is delayed relative to the second light-receiving element (B) is higher than the output level of the second light-receiving element (B).
Inventors:
OKADA NORIKAZU
TSUJI MASAKI
TAKADA TOSHIYUKI
SATOH KATSUNORI
TAKAOKA TAKASHI
TSUJI MASAKI
TAKADA TOSHIYUKI
SATOH KATSUNORI
TAKAOKA TAKASHI
Application Number:
PCT/JP2015/054864
Publication Date:
October 29, 2015
Filing Date:
February 20, 2015
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
G01D5/36
Foreign References:
| JPH11101661A | 1999-04-13 | |||
| JP2009063332A | 2009-03-26 | |||
| JP2003065802A | 2003-03-05 |
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
Mutsumi Sameshima (JP)
Mutsumi Sameshima (JP)
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