NON-CONTACTING METHOD AND INSTRUMENT FOR MEASURING DISTANCE AND ATTITUDE

摘要

PROBLEM TO BE SOLVED: To simplify the constitution of a non-contacting distance and attitude measuring instrument and reduce the cost of the instrument by receiving mark light containing two nonparallel segments which cross each other at one point and are projected upon the surface of an object and computing the distance to the object and the attitude of the object. ;SOLUTION: The surface 2 to be measured of an object 1 to be measured is irradiated with slit light rays 23a and 23b and mark light 3a containing straight lines L₁ and L₂ is projected upon the surface 2. The light 3a is reflected by the surface 2 and condensed through an image forming lens 4 so that the light 3 can form a mark light image on an image forming surface 7 provided with primary photosensors 6a and 6b. The sensors 6a and 6b detect the light intensity of picture elements at the crossing point of the mark light image formed on the image forming surface 7 and the intensity is transferred to a memory 14 after amplification 12a and 12b and A/D conversion 13a and 13b. A processor 16 computes the distance to the surface 2 and attitude of the surface 2 from the light intensity signal inputted from the memory 14 and displays the computed results on a displaying section 17.;COPYRIGHT: (C)1997,JPO