Back lights with a Very Low Height

For Cramped Conditions

Polytec offers lighting systems with a height of 8.5–10 mm for bright, even and homogeneous object illumination. These models come as back lights for checking contours or as shadow-free, diffuse front lights (with breakthroughs for gripper assembly). Custom products can also be developed.

A distinction is made between the following two models:

Sled back light:

  • Continuous and switching mode
  • Max. current is already regulated internally for each LED series
  • Very flexible configurations can be created; min. 40 x 40 mm to max. 800 x 800 mm (also rectangle shapes)
  • Colors: white (5,000 K) and red
  • Height: 10 mm


  • Works with pulse-width modulation (PWM), approx. 275 Hz +– 20% dimming
  • Available both for manual adjustment using a control knob and for remote control via an interface
  • Suitable for manual inspection stations or machine vision tasks where the PWM frequency is not disturbing

LLUB back light:

  • Continuous and switching mode
  • External controller optional
  • Configurations: min. 20 x 20 mm up to max. 400 x 200 mm
  • Colors: white, red
  • Height: 8.5 mm

Related product groups

LED-Leuchtfelder für Bildverarbeitung

Oversized Back Lights

For applications such as those carried out in slimline machines, Polytec offers you light fields with up to three edgeless sides in sizes of 2 x 2 mm up to 1,200 x 1,900 mm. The standard design height is 21 mm. Camera breakthroughs can be created with ease.