| 摘要 |
Arrangement for measurement arrangements with a laser 3 for emitting laser light on a path 5. A camera 4 is positioned so as to receive light from measurement surfaces 8-10 on measurement objects 7 positioned along the path within a longitudinal region of the same. Behind an objective 12 in the camera, there is an array 26 of light-sensitive elements which is elongate and has a longitudinal direction and a transverse direction. Positioned between the objective 12 and the array 26 is a lens 27 curved in one plane, preferably a cylindrical lens, the axis of curvature of which extends in the longitudinal direction of the array. The objective 12 is positioned in such a manner that its focal plane is located in the main in the surface of the array and the focal plane of the lens curved in one plane is located at a distance from the surface of the array, preferably in front of the same. The light which comes from that part of the measurement surface 8-10 illuminated by the laser light and which passes through the objective is spread by the lens 27 in the transverse direction of the array into a linear form, while the light focused towards the surface of the array 26 is not spread in the longitudinal direction of the array, along which the axis of curvature of the lens extends. <IMAGE> |
