Title:
MARKER
Document Type and Number:
WIPO Patent Application WO/2017/163778
Kind Code:
A1
Abstract:
A marker according to the present invention is formed of a translucent material, and comprises at least: a plurality of protruding surfaces arranged in a first direction; and a plurality of portions to be detected which are arranged at positions on the reverse side to the plurality of protruding surfaces and which are projected, as optically detectable images, onto the plurality of protruding surfaces. Each of the cross-sectional shapes of the plurality of protruding surfaces in a cross section in the height direction of the marker along the first direction is a curved line having a curvature radius which increases with increase in a distance from the vertex of the curved line.
Inventors:
SAITO TOMOHIRO
Application Number:
PCT/JP2017/007601
Publication Date:
September 28, 2017
Filing Date:
February 28, 2017
Export Citation:
Assignee:
ENPLAS CORP (JP)
International Classes:
G01B11/00; G01B11/26; G02B3/00; G03B35/00
Domestic Patent References:
| WO2008111579A1 | 2008-09-18 |
Foreign References:
| JP2016536645A | 2016-11-24 | |||
| JP2011176715A | 2011-09-08 | |||
| JP2000321509A | 2000-11-24 | |||
| JP2013025043A | 2013-02-04 | |||
| US6369949B1 | 2002-04-09 |
Other References:
See also references of EP 3435025A4
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
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