FiberLight® D2 Portfolio

UV-Vis Light Source for high measurement consistency

FiberLight® D2 is a compact UV-Vis light source designed for mobile spectroscopy applications and all types of handheld devices that require a low power consumption. It has a continuous spectrum covering the whole range from vacuum UV to near Infrared.

The FiberLight® D2 System is a complete UV-Vis light source, combining a deuterium lamp, with a 0.25 Watt tungsten lamp, a shutter, optical system and a SMA 905 connector. All elements are mounted on a printed circuit board. Both lamps and the shutter can be separately controlled by a TTL signal. FiberLight requires an external 12 VDC / 600 mA supply.

It is the only light source on the market with such a small size, integrated power supply and a smooth spectrum in the whole UV-VIS range. FiberLight® D2 is easy to integrate and handle. With the flexibility of the product and design Noblelight can meet the customers’ needs.




For an easy integration in your measurement device you can choose different features like:

  • Aperture Size
  • Window material
  • Connection
  • Light output
  • Shutter

Your advantages

The features of this light source open the way for new solutions in small spectroscopy equipment and UV-Vis optics:

  • Compact size
  • Low power consumption
  • Instant on and instant stability
  • Cyclic operation
  • Extended service life of up to 3 years
  • Separate control of both lamps and shutter
  • Easy coupling to optical fibers, measuring cells and capillaries
  • External control
  • Low heat dissipation

Application areas


FiberLight® D2 is it the ideal light source for applications with limited space in the equipment, whether stationary, portable / handheld or even battery-driven instruments. Low power consumption, small dimensions and ease of operation open up new possibilities for instrument designers.

  • Laboratory: UV-Vis Spectroscopy
  • Environment: Water Quality Monitoring, Waste Water Analysis, Marine Chemistry, Biological Measurements, Air Quality Monitoring
  • Process control

Technical Data


FiberLight® D2
Spectral distribution
200 – 1100 nm, optional 185 – 1100 nm
Power consumption
6 Watt
Power requirements 12 Vdc / 0.6 Adc
Operating ambient temperature 5 – 35°C
Relative humidity max. 90%, non condensing
Dimensions (L × W × H) 157 × 55 × 37 mm
Weight 130 g
Shutter Yes
Tungsten Lamp Yes
External control Lamp (D2, W-Lamp) ON/OFF independently, shutter open/close,
green LED is lit when the 12 Vdc supply voltage is applied
Light exit Focused or collimated beam
Optical fiber diameter 1.0 mm: 200-1000μm
0.5 mm: 100-600μm
Optical fiber connector SMA 905
Numerical aperture NA D2 lamp 0.245, W-lamp 0.057
Cooling Not required
Deuterium lamp
Spectral distribution 200 – 400 nm line free, optional 185 – 1100 nm
Window material Fused quartz, fused synthetic silica
Light output (radiant intensity) ≥ 5 × 10-8 W/sr @ 240nm
Stability ≤ 1 × 10-3 AU
Drift ≤ 0.25 %/h
Exciting frequency 250 kHz
Operation voltage Approx. 1kV
Life* ≥ 1000 h @ 240 nm (50 % intensity loss)
Tungsten Lamp
Spectral distribution 400 – 1100 nm
Voltage 5 Vdc
Current 45 mAdc
Typical Lifetime ≥ 2000 h