Marker

Abstract

The present invention provides a marker that allows a viewing direction to be determined from a detected image. A marker (100) according to the present invention includes a lens main body (110) including a plurality of lens units (111). The plurality of lens units (111) are arranged successively in a planar direction. Each of the lens units (111) includes, on one surface side of the lens main body, a light-condensing portion (121) and a non-light-condensing portion (122) that are provided along an arrangement direction in which the lens units (111) are arranged successively. The lens main body (110) includes, on the other surface (140) side of the lens main body (110), a plurality of detectable portions (141) that can be detected from the one surface side. A pitch of the plurality of lens units (111) is different from a pitch of the plurality of detectable portions (141).

Dependencies are inferred from the claim text.