Cold light source with brightness control, 20 W


Cold light source with mechanical brightness control KL5120

Cold light source with mechanical brightness control KL5120

Key features
Key features

Brightness control without color change

The KL5120 places the light where you need it. It is a mechanically adjustable cold light source without color change with long-lasting halogen lamp. The mains voltage automatically switches between 110 and 230 V. Various light guides are available separately for this cold light source.

  • Brightness adjustable without color change
  • 20 W halogen lamp
  • Color temperature of 3050 K
  • Automatic switching of the mains voltage from 110 to 230 V
  • Built-in adapter for spectroscope illumination
  • Various light guides available

Model specifications

ILLUMINATIONHalogen lamp 8 V, 20 W, adjustable
DIMENSIONS200 x 118 x 186 mm
WEIGHT2000 g
EQUIPMENTBuilt-in adapter for spectroscope illumination, without fiber optic light conductor

Passende Lichtleiter für diese Kaltlichtquelle

One-arm light conductor, optical fibre
500 mm for all cold light sources
Available in our Gemmo shop

Twin-arm light conductor, optical fibre
500 mm for all cold light sources
Available in our Gemmo shop



The A.KRÜSS gemmology shop offers a wide range of analysers for professional use in gemology. Both the cold light sources and the matching accessories can be purchased directly from our Gemmo shop.

Besuchen Sie unseren Gemmo-Shop

What are the advantages of a cold light source?

The ambition of any scientific examination is to discover some truth about the sample being investigated, but too often the simple act of examination actually changes the sample before the research is completed. A case in point is the examination of biological samples under a microscope, where the radiant energy from the illumination can cause damage and even premature cell death. This problem, particularly noted with old-fashioned incandescent lamps, is effectively solved through the use of a fibre-optic cold light source.

By directing the visible light, without unwanted infra-red (heat) energy, sample illumination need no longer be a trade-off between being able to see the subject and being able to keep it alive. A steady colour temperature is another important consideration for the microscopist, so that delicate fluorescence effects are not altered by simply changing the brightness level of the illumination.

Cold light sources also offer advantages to the cost-conscious and environmentally-aware laboratory, promising long lamp life and low energy consumption with less maintenance requirement and lower power consumption.

Any Questions?

We will be glad to help.

A.KRÜSS Optronic GmbH
Alsterdorfer Str. 276-278
22297 Hamburg | Germany

Tel. +49 40 5143 17-0
Fax +49 40 5143 17-60