Title:
ENCODER AND ENCODER-EQUIPPED MOTOR
Document Type and Number:
WIPO Patent Application WO/2016/092638
Kind Code:
A1
Abstract:
[Problem] To provide an encoder capable of improving detection accuracy, and an encoder-equipped motor. [Solution] This encoder comprises: patterns SA1, SA2 along a measurement direction C; a light source 131 that emits light to the patterns SA1, SA2; and light reception arrays PA1, PA2 each arranged along the measurement direction C and receiving light emitted from the light source 131 and reflected by the respective patterns SA1, SA2. A plurality of light reception elements provided in each light reception array PA1, PA2 each have the same maximum outer dimension TPA2 in the measurement direction C and the same maximum outer dimension WPA2 in a width direction R perpendicular to the measurement direction, and the light reception elements provided at different distances from the light source 131 have different shapes such that the light reception amount of each light reception element becomes the same.
Inventors:
YOSHIDA YASUSHI (JP)
MATSUTANI YASUHIRO (JP)
KONDO HIROKI (JP)
MUROKITA IKUMA (JP)
HARADA MASANOBU (JP)
MURAOKA JIRO (JP)
MATSUTANI YASUHIRO (JP)
KONDO HIROKI (JP)
MUROKITA IKUMA (JP)
HARADA MASANOBU (JP)
MURAOKA JIRO (JP)
Application Number:
PCT/JP2014/082597
Publication Date:
June 16, 2016
Filing Date:
December 09, 2014
Export Citation:
Assignee:
YASKAWA DENKI SEISAKUSHO KK (JP)
International Classes:
G01D5/347
Foreign References:
| JP4945674B2 | 2012-06-06 | |||
| JP2007010426A | 2007-01-18 | |||
| JPS6073418A | 1985-04-25 | |||
| JP2000241198A | 2000-09-08 | |||
| JP2012167949A | 2012-09-06 | |||
| JP2013083673A | 2013-05-09 | |||
| JPH0360019U | 1991-06-13 |
Attorney, Agent or Firm:
MASUDA Hirofumi et al. (JP)
Hirofumi Masuda (JP)
Hirofumi Masuda (JP)
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