DSP 200 – ultra-fast measurements of spatial light distributions with the goniophotometers

The DSP 200 photometer sets a benchmark with regard to precision, linearity, measurement speed, and has an impressively broad range of possible applications in various different measurement distances, depending on the sample and application. It satisfies the requirements of accuracy class L according to DIN 5032-7 (2017) and EN 13032-1 for laboratory measurement of the photometric data of lamps and luminaries.

It distinguishes itself in particular through its ability to measure modern specimens with pulse-width modulated LEDs and LED modules, as well as samples with traditional light sources such as incandescent, halogen, fluorescent and discharge lamps. This is made possible by a unique combination of high-precision analog technology and state-of-the-art digital signal processing. A cooled silicon photo element adjusted to the brightness sensitivity of the human eye is used as a detector, achieving outstanding stability and precision.

An extensive range of accessories is available for the DSP 200. For example, it incorporates stray light tubes adjusted to the measurement distance and sample size, stands, ceiling mounts and optical benches.


  • Class L photometers conforming to DIN 5032-7 (2017), CIE 69, CIE 121 and EN 13032-1
  • Wide measuring range of 0.1 mlx (display resolution) to 200 klx for all standard light sources, including PWM LED
  • Consistent display of measurements (device display, connected system components and software)
  • Excellent stability and lowest noise level due to detector cooling
  • System integration via CAN bus, integrated color display with touchscreen

    The DSP detector

    The newly-developed DSP 200 photometer uses a silicon photo sensor as a detector that achieves outstanding stability and the highest degree of accuracy due to integrated innovative cooling to 0°C. The silicon photodiode is precisely adjusted to V (λ) and has a light-sensitive surface of only 6 x 6 mm. This ensures an excellent local resolution that pays off, in particular with light sources with sharp gradients and new applications such as glare-free headlights, pixel headlights and scans due to the cut-off line.