Apparatus for optical measurement of the shape of oblong objects

Details Apparatus for optical measurement of the shape of oblong objects Apparatus for optical measurement of the shape of oblong objects

1985-01-08

1988-09-13

Rosenberger, R. A.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

356383, G01B 1102

Patent

active

047705370

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. A slot disc is included in the optics of the mirror and provided with a narrow slot-shaped opening arranged so that component beams of light depicting the length of the object to be measured can pass through the optics only within an area corresponding to the width of the opening, whereas component beams of light depicting the width of the object can pass through the optics within an area corresponding to the length of the entire opening.

REFERENCES:
patent: 4021119 (1977-05-01), Stauffer
patent: 4351437 (1982-09-01), Long

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