Cylindrical device for optical quality control of a strip-like material

摘要

PCT No. PCT/DE96/00752 Sec. 371 Date Jan. 28, 1998 Sec. 102(e) Date Jan. 28, 1998 PCT Filed May 1, 1996 PCT Pub. No. WO96/35113 PCT Pub. Date Nov. 7, 1996The invention is for a device for sensing radiation directed from a radiation source on a travelling strip-like sample and radiation reflected from or transmitted through the sample with a rotary cylindrical roller having at least one radiation-transparent sensing point at the periphery of the roller, a central radiation-transparent decoupling point at one end and a central radiation-transparent point at the other end. Inside the roller, there are light guides to guide the radiation from the coupling point to the sensing point(s) and from there to the decoupling point.