US 10,295,336 B2 · Element provided with portion for position determination and measuring method

Abstract

The element according to the present invention has a first plane (201) and a second plane (203) forming a prescribed angle with the first plane. The second plane is provided with at least three portions for position determination (101A 101B, 101C, 101D) arranged on the second plane sufficiently spaced apart from each other, allowing the identification of the second plane. Each portion for position determination is formed in a convex shape with respect to the second plane. A tangential plane (TL) to the surface of each portion for position determination at a point on a border line between the second plane and the surface forms a single plane and tangential planes of the portions for position determination are parallel to one another.

Claims19

Dependent claims

An element having a first surface and a second surface, the second surface being at an angle with the first surface of the element, wherein:

the second surface is provided with at least three portions for position determination thereon, the portions for position determination being arranged such that spacing between the portions for position determination is great enough to locate the second surface, and wherein
each of the portions for position determination has a convex shape on the second surface and is configured such that a tangential plane of a surface of each portion for position determination at any point on a border line with the second surface and the surface forms a single plane, an angle formed by the tangential plane and the second surface is in a range from 20 degrees to 70 degrees, and wherein the tangential planes on the border lines of the at least three portions for position determination are parallel to one another.

A measuring method for measuring a position of a target surface provided with plural portions for position determination,

wherein the portions for position determination have a convex shape on the target surface and each of the portions for position determination is configured such that a tangential plane of a surface of each portion for position determination at any point on the border line with the target surface forms a single plane, and tangential planes on the border lines of the plural portions for position determination are parallel to one another, and
wherein the method includes the steps of:
determining positions of the border lines of the plural portions for position determination from an image of the target surface;
and
determining the position of the target surface from the positions of the border lines of the plural portions for position determination.

2 more elements

Dependencies are inferred from the claim text.

Element provided with portion for position determination and measuring method

Life of this patent

Element provided with portion for position determination and measuring method

Life of this patent

Abstract

Claims19