Title:
MARKER
Document Type and Number:
WIPO Patent Application WO/2017/212853
Kind Code:
A1
Abstract:
The marker according to the present invention comprises: a first surface which includes a plurality of convex surfaces arranged at least in a first direction; and a second surface which is arranged in an upper-lower position with respect to the first surface, and which is projected on the plurality of convex surfaces as an optically detectable image. The second surface includes a plurality of first areas and a plurality of second areas that are optically mutually identifiable, wherein the interval between the centers of the plurality of first areas with respect to the first direction is greater than the interval between the apexes of the plurality of convex surfaces with respect to the first direction. The plurality of first areas are arranged farther from the convex surfaces than a focal position of the plurality of convex surfaces. When external parallel light is made incident on the convex surfaces in an upper-lower direction, the width with respect to the first direction of a light bundle formed by the convex surfaces at a height at which the first areas are arranged is not more than the width with respect to the first direction of the first areas.
Inventors:
SAITO TOMOHIRO
Application Number:
PCT/JP2017/017700
Publication Date:
December 14, 2017
Filing Date:
May 10, 2017
Export Citation:
Assignee:
ENPLAS CORP (JP)
International Classes:
G01B11/00; G02B27/18; G03B35/00
Foreign References:
| JP2006267879A | 2006-10-05 | |||
| JP2012145559A | 2012-08-02 | |||
| JP2013025043A | 2013-02-04 | |||
| JP2002311509A | 2002-10-23 | |||
| JP2010534352A | 2010-11-04 | |||
| US6369949B1 | 2002-04-09 |
Other References:
See also references of EP 3470771A4
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
Download PDF:
Previous Patent: ORGANIC ELECTROLUMINESCENT ELEMENT AND LIGHTING FIXTURE FOR VEHICLES
Next Patent: MODE SWITCHING NOTIFICATION DEVICE
Next Patent: MODE SWITCHING NOTIFICATION DEVICE