Colour measuring station for flat samples - has bunches of optical fibres illuminating sample and carrying back reflected light

摘要

The station has a table lifting the sample. a test head (2) is suspended on the device frame (1), and the sample table (3) is below it. The test head consists of an opaque case (31) and a cylindrical chamber open at the bottom and covered by a glass plate. A first optical fibre bunch (32) is inserted along the cylinder axis for the sample illunination. Several holes are made in the chamber sides for fibre bunches (34) carrying light diffusely reflected from the sample (33). Their axes intersect on the cylinder axis. The sample is pressed by the lifting table (3) to the glass plate, with the pressure controlled by a spring (29).