Special features of Laser Modules Type 13LR/13LRM
Chain of equidistant dots
The laser diode beam sources of type13LR/13LRM have a fan angle, a constant line width and an approx. uniform intensity distribution along the laser line.
However, the fine-structure is a chain of equidistant dots.
Due to this special intensity profile the lasers of type 13LR and 13LRM are not suitable for stray light photometry.