Laser Line geometries

Laser Line Geometries

Machine Vision Laser Line series 13LR
Machine Vision Laser Line series 13LR

Lasers with fan angle

Lasers with fan angle show an increasing line length with increasing working distance. Lasers are avilable with a fan angle with up to 84° so that they can provide a long line length in a rather short working distance. The longer the line length, the smaller the power density in the focal plane. Please note that each laser has a defined focussing range, in which the laser line can be focussed. If you need a large depth of focus, there is always a corresponding macro line laser (with an extended depth of focus).

Machine Vision Laser Line series 13LT
Machine Vision Laser Line series 13LT

Semi-telecentric

Semi-telecentric lasers have no fan angle and have a constant line length along the beam path. The line length is usually smaller than for lasers with fan angle. However, a semi-telecentric line is often chosen for a reflection based measurement technique and a glossy surface. The constant line length then allows a camera (with an aperture larger than the line length of course) to capture the whole reflected line even if the camera is placed further apart.