Title:
REFLECTION TYPE ENCODER
Document Type and Number:
WIPO Patent Application WO/2016/195056
Kind Code:
A1
Abstract:
[Problem] To provide an encoder that easily achieves stable operation and that can perform high-quality analog displacement output. [Solution] An interference optical system having a collimating lens, with a diffraction grating placed on the flat surface thereof, is sandwiched between a substrate on which a laser oscillator and a light receiving section are provided and a scale. Thereby, it is possible to provide a reflection type encoder that easily improves signal quality while keeping to a minimum portions requiring highly accurate assembly and machining and that can perform analog displacement output by interference within the interference optical system.
Inventors:
SAWADA RENSHI (JP)
NAKAMURA MOTOICHI (JP)
ISHIKAWA MASANORI (JP)
KUGOU TOMOYUKI (JP)
OKAMOTO CHIHIRO (JP)
AOYAGI TOMOHIDE (JP)
NAKAMURA MOTOICHI (JP)
ISHIKAWA MASANORI (JP)
KUGOU TOMOYUKI (JP)
OKAMOTO CHIHIRO (JP)
AOYAGI TOMOHIDE (JP)
Application Number:
PCT/JP2016/066536
Publication Date:
December 08, 2016
Filing Date:
June 03, 2016
Export Citation:
Assignee:
NAMIKI PRECISION JEWEL CO LTD (JP)
ADAMANT KK (JP)
SAWADA RENSHI (JP)
ADAMANT KK (JP)
SAWADA RENSHI (JP)
International Classes:
G01D5/347; G02B13/00; G02B5/18
Foreign References:
| JPH06341861A | 1994-12-13 | |||
| JP2005283357A | 2005-10-13 | |||
| JP2009105106A | 2009-05-14 | |||
| JPH07294214A | 1995-11-10 | |||
| JPH06300520A | 1994-10-28 |
Attorney, Agent or Firm:
NAMIKI SEIMITSU HOUSEKI KABUSHIKI KAISHA (JP)
Namiki precision jewelry incorporated company (JP)
Namiki precision jewelry incorporated company (JP)
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