PROJECTION DEVICE, DETECTION DEVICE, AND METHOD FOR DESIGNING RANDOM DOT PATTERN

Title:

PROJECTION DEVICE, DETECTION DEVICE, AND METHOD FOR DESIGNING RANDOM DOT PATTERN

Document Type and Number:

Japanese Patent JP2022112299

Kind Code:

A

Abstract:

To provide a projection device, a detection device, and a method for designing a random dot pattern capable of specifying an accurate position and reducing an arithmetic load.SOLUTION: A projection part 10 is a projection device which projects a random dot pattern. The random dot pattern is a pattern in which one dot is randomly arranged in each arrangement area having a predetermined size centered at an intersection point position of a square lattice arranged at regular intervals n. The shortest distance between dots is arranged so as to be equal to or more than a predetermined interference distance d.SELECTED DRAWING: Figure 4

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Inventors:

INAZUKI YUICHI
SATO MASASHI
TOYAMA NOBUTO
YOSHIOKA HIDENORI
MIYAZAKI YUICHI
OYAGI YASUYUKI
UEDA TOMOAKI

Application Number:

JP2021008071A

Publication Date:

August 02, 2022

Filing Date:

January 21, 2021

Export Citation:

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Assignee:

DAINIPPON PRINTING CO LTD

International Classes:

G01B11/25

Attorney, Agent or Firm:

Masayuki Masabayashi
Tetsuo Shiba
Hayashi Kazuyoshi

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