Image of a cutaneous replica by laser profilometry';
Cutaneous microrelief measurement
The cutaneous microrelief is analysed by a de-location laser probe. Its optical measuring head is a controlled system that uses the transmitter-receiver principle. A laser diode (transmitter) emits a light beam onto the surface to be measured and the reflected signal is sent back to a set of 4 photodiodes (receiver).
The diameter of the laser on a flat surface is 1 µm, this diameter varies when projected onto a rough surface. During measurement, the variation in laser diameter initiates an automatic focus search by moving the lens vertically. An attached system registers the focus height, which is the topographic signal.