Low Noise Laser Micro Line Generator LNC-5LT+56CR

Low noise semi-telecentric laser line with constant line length 4,8 mm / 2,4 mm

The beam-shaping optics define the beam parameter line length, the optimum working distance and the focussing range. The chosen laser module defines the wavelength and the power output and, thereby, the laser safety class.

The line lengths and line widths in the technical data are valid for the nominal working distance of the line optics. Any working distance changes do require refocussing within the available focussing range, with line width increasing in direct proportion with greater working distance. The beam however is not telecentric anymore

The new low noise laser diode modules from Schäfter+Kirchhoff have reduced power noise, reduced coherence length and low speckle contrast as a result of internal RF-modulation. The low noise (<0.1% RMS, @<1 MHz) and the mode-hopping free laser operation makes these laser diode modules ideal for particle measurements or advanced medical and biotechnological applications. Due to the reduced coherence length, speckle contrastmight be lowered. This effect, however, becomes smaller for thinner lines.

Performance Features

  • Low noise laser module (< 0.1% RMS,@<1 MHz)
  • Reduced coherence
  • Mode hopping free laser operation
  • Fan angle 0° (semi-telecentric)
  • IIntensity profile [X2]: Gaussian in line direction clipped by an aperture with typically 40% edge intensity
  • Spectral range 405–980 nm
  • Line width starting at 26 μm (1/e²) as a function of working distance
  • Constant line lengths of 4.8 or 2.4 mm
  • Laser power up to 42 mW, adjustable using potentiometer
  • Supply voltage: 5V DC
  • External modulation: TTL up to 100 kHz and analog up to 100kHz
  • Integrated power control <1-100%


Laser Micro Line Generator LNC-5LT+56CR, dimensions
Schäfter + Kirchhoff GmbH - specialists for optical sensors and measurement technology
Kieler Str. 212, D-22525 Hamburg, Tel. +49(0)40 85 39 97-0, Fax +49(0)40 85 39 97-79