| 摘要 |
PURPOSE:To obtain adequate moire fringes of contour lines necessary for measurement by controlling and driving respectively independently zooming and focusing with respect to the respective lenses on a projection side and a photographing side. CONSTITUTION:The signal obtd. by an image pickup means 5 is processed through an electron grating, whereafter moire fringes are projected on the image screen of a monitor TV 7. The zoom lenses 3 and 6 which are controlled by a microcomputer 8 are moved respectively independently. The size of the image of a projected grating 2 and the pitch of the projected grating are changed by the lens 3 on the projection side and the size and photographing range of an object 1 are changed by the lens 6 on the photographing side. Thus the device is made capable of changing the range of magnification and image pickup, deciding the ruggedness of the object, changing the angle of inclination of contour planes, and changing accuracy with ease. |
