Patent Number: 6,480,678

Title: Light transmitting member driving device for a contour measuring apparatus

Abstract: A three-dimensional measuring apparatus or similar contour measuringapparatus of the present invention includes a projector for emittinglight, a lattice film or similar light transmitting member, and a camera.Light issuing from the projector is transmitted through the lattice filmto illuminate an object to be measured. The lattice film is movable to aplurality of projecting positions in a preselected direction. The camerashoots the object being illuminated by the light. A driving device fordriving the lattice film includes a cam follower associated with thelattice film, and a cam for guiding the cam follower. The cam has a camsurface including a plurality of contiguous, insensitive portions each forcausing the lattice film to remain in a halt at a particular position whenthe cam follower contacts the insensitive portion.

Inventors: Matsushima; Takaaki (Tokyo, JP)


International Classification: G01B 11/24 (20060101); G01B 11/25 (20060101); G03B 015/03 (); G03B 021/00 (); G01B 011/25 (); H04N 007/18 ()

Expiration Date: 11/12014