"The detection range can be significantly improved by adding fast-axis-collimator (FAC) lenses in front of the four lasers to narrow the laser beam vertical divergence from 15° of 1°."
Is there something wrong about the angle above described.
From the datasheet of splll 90-3,the fast-axis divergence angle is 30° and from picture of lens placed ,the lens was used to collimate the fast-axis.
