Marker
AssigneeEnplas Corporation
InventorTomohiro SAITO
Life of this patent
Estimating the term…
Abstract
A marker (10) includes a plurality of convex surface portions (13) which are formed using a translucent material and are arranged side by side in the X-direction. Each convex surface portion (13) is inclined in one direction in the X-direction. Optical axes (OA1) of each of the convex surface portions (13) intersect at an optical reference point (OP) on a product optical axis (PA), and each also intersect a bottom surface of a groove (15). Each groove (15) is arranged in such a way that the distance thereof from a central axis (CA) of each convex surface portion (13) increases with increased distance from the product optical axis (PA) in the X-direction. A colored portion (16) is accommodated in each groove (15).
Claims5
A marker, comprising:
- a multi-lens part including a plurality of optically transparent convex lens parts arranged along at least one arrangement direction,
- wherein each convex lens part includes:
- a convex surface part,
- a detection object part disposed corresponding to the convex surface part and configured to be projected on the convex surface part as an optically detectable image, and
- an optical axis passing through the convex surface part and the detection object part corresponding to the convex surface part,
- wherein a plurality of optical axes of the plurality of convex lens parts include first optical axes and a second optical axis, the first optical axes being outermost in the arrangement direction and intersecting each other, the second optical axis being represented by a straight line that bisects an angle between the first optical axes and passes through the multi-lens part,
- wherein at least two of the plurality of the convex lens parts are tilted in the same orientation and at the same angle with respect to the arrangement direction,
- wherein at least one of a plurality of detection object parts of the plurality of convex lens parts is disposed such that the greater a distance of at least one of the convex lens parts including the at least one of the plurality of the detection object parts from the second optical axis in the arrangement direction increases, the greater a distance of the at least one of the plurality of the detection object parts from a central axis of the convex surface part corresponding to the at least one of the plurality of the detection object parts in the arrangement direction, and
- wherein at least one of the plurality of the optical axes of the plurality of convex lens parts is set such that the greater a distance of at least one of the convex lens parts including the at least one of the plurality of the optical axes from the second optical axis in the arrangement direction, the greater an intersection angle of the at least one of the plurality of the optical axes and a central axis of the convex surface of the at least one of the convex lens parts.
Dependencies are inferred from the claim text.