Abstract: According to the present method of optical measurement of shape of oblong objects, a reflector with a light source in front of it is placed to the opposite side of the object relative to the camera. The reflector is provided with a cross section shaped so that the rays emitted by the light source and reflected from a mirror converge at a focal point. The camera is placed to this point or an optically equivalent point, whereby the rays emitted by the light source and reflected from the mirror are aimed to enter the lens of the camera. According to the most advantageous embodiment of the invention, to the opposite side of the object relative to the camera is placed an elliptical reflector having the light source placed at its first focal point. The camera is placed to the other focal point of the ellipse or an optically equivalent point, whereby the rays emitted by the light source and reflected from the elliptical reflector via the mirror are aimed to enter the lens of the camera.

Abstract: An apparatus for optical measurement of the shape of oblong objects. The apparatus having a measurement base for an object to be measured, a camera, and image processing means connected to the camera for processing the images information received from the camera into control data. A mirror is positioned at a distance from the measurement base for reflecting the image of the object located on the measurement base to the optics of the camera. The reflecting face of the mirror has a curvedness that is different in the longitudinal direction the object as compared with the width direction so that the image of the object, reflected to the optics of the camera is reduced in the longitudinal direction as compared with the width direction.