The low noise laser diode beam sources series LNC-5LT-1/LNC-5LTM-1 and LNC-5LT-2/LNC-5LTM-2 produce semi-telecentric laser lines with a Gaussian intensity distribution along the laser line. They differ in their line length and line width.
LNC-5LT-1 vs. LNC-5LT-2
The laser diode beam sources series LNC-5LT-1 produce a semi-telecentric laser line with a line length in the range of 4.8 mm. For most laser diodes the intensity profile is Gaussian in line direction clipped by an aperture at line length 4.8 mm with an edge intensity of typ. <40%. In some cases the line length is slightly smaller. In this case the line length is given on the 13.5%-level and the beam is Gaussian in line direction and truncated at 4.8 mm. The line width is constant along the laser line. Across the laser line the intensity distribution is Gaussian for series LNC-5LT-1 and approx. Gaussian for series LNC-5LTM-1.
The laser diode beam sources series LNC-5LT-2 produce a semi-telecentric laser line in the range of 2 mm line length. The line length is given on the 13.5%-level. The intensity profile is Gaussian in line direction. The line width is constant along the laser line. Across the laser line the intensity distribution is Gaussian for series LNC-5LT-2 and approx. Gaussian for series LNC-5LTM-2.
Micro and Macro lasers
The lasers of series LNC-5LT-1 and LNC-5LT-2 are Laser Micro Line Generators designed to produce lines with small line width. They have a small depth of focus (in this case the depth of focus is the Rayleigh range). Laser Macro Line Generators like the corresponding lasers of series LNC-5LTM-1 and LNC-5LTM-2 have common basic optical features but are designed to generate laser lines with an extended depth of focus.
The lasers are low noise (typ. < 0.1 % of Po* (RMS, Bandwidth < 1 MHz)) and operate mode-hopping free. Due to the reduced coherence length the speckle contrast is lowered. However this effect is smaller for smaller lines. (* Po is the maximum specified output power.)
The laser has integrated electronics for control of the laser output power. The output power can be controlled using the modulation input ports (TTL and analog) or manually using the potentiometer.
Adjusting the working distance
For lasers of series LNC-5LT-1 and LNC-5LT-2 the working distance is fixed. A fine-adjustment of the distance between laser and target is recommended for fine-focusing in order to achieve minimal line width.
The laser series LNC-5LT-1/LNC-5LTM-1 as well as LNC-5LT-2/LNC-5LTM-2 are also available as a standard version 5LT-1 (Micro), 5LTM-1 (Macro), 5LT-2 (Micro) and 5LTM-2 (Macro). Please note that these have a different electronics type, but are also available with RS232 interface.
These high quality lasers can e.g. be used for machine vision applications, laser triangulation or laser light sectioning.