DISCRIMINATION PATTERN, AND ARTICLE WITH DISCRIMINATION PATTERN

摘要

PROBLEM TO BE SOLVED: To provide a discrimination pattern that can be read in a general-purpose device such as a mobile phone and a tablet terminal, is difficult to visually recognize, and is difficult to forge and alter.SOLUTION: A discrimination pattern 10 includes a formation region Rs of a minute projection group 2, and a non-formation region Rm of the minute projection group 2. Minute projections 2u are closely arranged in the formation region Rs of the minute projection group 2. An average projection distance Dave of the adjacent minute projections 2u is equal to or less than the minimum wavelength Λmin in a wavelength band of an electromagnetic wave, which reads the discrimination pattern 10.