光切断法を用いた3次元形状の測定

抄録

A new method based on an analysis of optical cut image for measuring 3-dimensional shape of inside and outside surfaces of an object has been described. To obtain a sectional image for applied slit ray of light (ray in a form of slit), a substance is thinly coated on the surfaces of the object. We suppose the substance of object to be transparency, and the applied ray can penetrate the object. The coated substance and the intensity of light are selected so that a part of ray is reflected randomly at the coated substance (the most of ray penetrate the coated substance), and the reflected ray at all surfaces may be caught outside the object. When the slit ray is applied to this object, a sectional image can be obtained by using proper lenses.
It is shown that the 3-dimensional shape of surfaces, expressed as a set of dots in this system, is obtained from the analysis of the images and their corresponding positions of (slit ray) plane.