Register mark sensor for illumination of register marks in processing machine, has two optical units aligned together at angle of larger than zero degree, and third optical unit formed as transmission unit and/or reception unit

摘要

The sensor (100) has an evaluation unit (130) connected with a measuring head (110), which is equipped with three optical units (111-113). Two of the optical units are aligned together at angle of larger than 0 degree. Another optical unit is a transmission unit and/or a reception unit. The optical units are connected together with the evaluation unit and/or light sources in the evaluation unit at the measuring head by optical fibers (121-123). The optical units are formed as a combined transceiver unit, and an angular position of one of the optical units is changed. Independent claims are also included for the following: (1) a method for determining a position or color of register marks on a material in a processing machine (2) a computing unit for performing a method for determining a position or color of register marks on a material in a processing machine.