Title:
INVISIBLE MARKER, INVISIBLE MARKER SYSTEM, AND PROGRAM FOR INVISIBLE MARKER SYSTEM
Document Type and Number:
Japanese Patent JP2023174038
Kind Code:
A
Abstract:
To provide an invisible marker, an invisible marker system, and a program for an invisible marker system which can retain marker functions while ensuring the displayed figure is not visible to the human eye.SOLUTION: An invisible marker 1 includes a concealment layer 50 that is opaque to visible light but has transparency to near-infrared light, and a display layer 30 that displays at least figures. The figures of the display layer 30 include at least one of three or more marks 2 observable as independent shapes, and an identification mark that allows for identification of unique information.SELECTED DRAWING: Figure 2
Inventors:
KASHIMA KEIJI
OKAWA KOJIRO
FURUKAWA TADASHI
OKAWA KOJIRO
FURUKAWA TADASHI
Application Number:
JP2022086648A
Publication Date:
December 07, 2023
Filing Date:
May 27, 2022
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
G01C15/06; G01B11/00; G01B11/02
Attorney, Agent or Firm:
Masayuki Shobayashi
Tetsuo Shiba
Kazuyoshi Hayashi
Tetsuo Shiba
Kazuyoshi Hayashi