Goniophotometer robogonio: One System. Six Advantages.

  1. Maximum Flexibility – Goniophotometry in near and far field…
  2. Extremely quick scans – fast Class L photometer shortens…
  3. Variable size: robogonio in numerous sizes…
  4. Maximum precision – highest angle repeatability…
  5. Intuitive operation - easy to use...
  6. All-round carefree package – your partner from start to finish…

Ten machine sizes - multiple goniophotometer configurations

robogonio combines the flexibility of a KUKA industrial robot with the precision of the opsira light measurement technique. Depending on the request, different detectors can be combined with robogonios of various sizes.

The crucial configuration attributes are

  • size and payload of the robogonio
  • detector equipment

This opens up countless possibilities for the configuration of your own robogonio. The choice of goniophotometer is facilitated by the three product lines with clearly defined detector equipment.

Many goniophotometer types - one device

With its six axes, the robogonio combines multiple goniophotometer types into one device, defined in the following standards:

  • DIN 5032-1
  • DIN EN 13032-1
  • CIE 121
  • CIE S 025

Especially type 1.1, 1.2 and 1.3 are a piece of cake for the robogonio. In these types, the detector stays stationary while the sample (light source, luminaire, display, LED …) rotates around its axes, entirely conform to the latest standardization DIN EN 13032-4, CIE S 025.

  • robogonio alpha line

    The goniophotometer robogonio

    Three product lines - numerous varieties


    • Detector: Standard photometer frc-f
    • The alpha line is equipped with the solid photometer frc‘3 for luminous intensity measurements. Measurements of the luminous intensity distribution are conducted step by step with the desired measurement resolution. A typical LID measurement takes approximately 100 minutes.
    • Example configuration: robogonio alpha 8
  • robogonio pro line

    The goniophotometer robogonio

    Three product lines - numerous varieties

    • Detector: very fast Class L photometer
    • The pro line impresses with a high-quality and very fast Class L photometer. The luminous intensity distribution of a light source or luminaire is measured in minutes with high precision.
    • Example configuration: robogonio pro 18
  • robogonio top line

    The goniophotometer robogonio

    Three product lines - numerous varieties

    • Detector: fast photometer with a spectrometer
    • The top line combines the fast photometer with a spectrometer. Luminous intensity distribution and spectral distribution with an angle (color over angle) are measured easily and direct.
    • Example configuration: robogonio top 26

Limitless Combinations

robogonio alpha 8

Detector equipment: solid standard photometer frc-f

Detector equipment: high-quality and speedy high-class photometer frc-f-l

Detector equipment: fast pro-line photometer and spectrometer for spectral- and color measurements

Example :
robogonio alpha 8

The robogonio alpha line is equipped with the solid photometer frc’3 for precise measurements of luminous intensity distributions.

Example :

The pro line is equipped with the fast class L photometer frc-f-l. This photometer allows high-resolution measurements of the luminous intensity distribution in no more than two minutes at an extremely high precision.

Example :

The top line works with the photometer frc-f-l as well as with an additional spectrometer which enables measurements of spectral distributions from UV to NIR. Colorimetrical values in the visible spectral range are generated directly according to CIE and are saved in a measurement report.

Technical Specifications - Product Details

Flexibility in size and payload

Six axes in one device

Far field: EULUMDAT and IES

Luminance measurement

Light source mounted on the robogonio

Detector mounted on the robogonio

Luminous flux integrator

robogonio BSDF

Module for fast spectrally resolved scatter light measurement

Current developments in photonics use new materials to combine light conversion and light scattering. High power density, small dimensions and the mutual influence of conversion and scattering make a simulation of light conversion and light scattering impossible. Spectrally resolved scattered light measurements are a crucial prerequisite for the development of even more efficient light sources.

The standard measurement method for determining the BSDF (bidirectional scattering distribution function) / BRDF (bidirectional reflectance distribution function) is goniophotometry. The sample is mounted on a specimen fixture. Lighting and a detector are positioned relatively around the sample. Scattered light goniophotometers have a complex and expensive setup and are slow. In the project, a new, fast and cost-effective solution for scattered light measurement was developed. Thus, a new module is added to the proven opsira robotic goniophotometer (robogonio) to enable fast and cost-effective spectrally resolved scattered light measurements.

The robogonio is a very versatile system to realize the relative solid angles and distances between the DUT (luminaire, lamp) and the detector system required for photometric measurements in a very wide range.

The aim of the project was to develop an additional module for the robogonio, which realizes the need of at least 2 more axes without an additional device, but as an additional "claw" attached to the robogonio.  

The new robogonio BSDF will be presented during the next Light+Building Tade Show from October 2nd to 6th, 2022 in Frankfurt/Main in Germany, opsira Stand F70 – Hall 8.0.

This Project is supported by the Federal Ministry for Economic Affairs and Climate Action (BMWK) on the basis of a decision by the German Bundestag.



In the automotive industry, two aspects of photometric measurement are of particular importance: Results need to be delivered extremely quick and authoritative and the measurements have to be executed with the finest angular resolutions so that the tests comply with the applicable standards.
The robogonio meets both of these criteria perfectly. The speedy high-end-photometer reduces the time required for classic goniometric measurements to a few minutes. Moreover, the robogonio permits angular resolutions of 0.01°, thus enabling precise observance of the cut-off line.

fast scan automotive headlight measurement


Constantly launching new variants of luminaires, easily providing light planners with far field data (IES or EULUMDAT), and quickly generating the requiredc LED data. The robogonio stands for a measuring solution that fulfills all these requirements with ease.
The optional spectrometer also enables color-over-angle measurements. Optic designers can now determine how the color changes at certain angles and whether unwanted color effects occur.
Another important aspect is the measurement of the total luminous flux in relation to the consumed electrical power. Luminous flux efficiency in lumen/watt as well as energy efficiency classes can be determined directly.

fast scan LED luminaire measurement

Signal lights

Luminous intensity distribution is an essential factor for measuring traffic lights, railway signals, beacons or signal towers for production lines. Some applications present the additional challenge of the front and back light exit windows having to emit the exact required quantity of light.
Here, the robogonio impresses with its flexibility since it can measure the luminous intensity distribution in both directions using arbitrary cebtres of rotation in space.
Standard-relevant testing areas are covered automatically by the robogonio.
For fast and efficient work, the robogonio enables integrating user-defined measuring processes.

fast scan signal light measurement

More applications

Goniophotometry: fast scan LED light fixture measurement

fast scan LED bulb measurement

Goniophotometry: fast scan flash beacon measurement

fast scan flash beacon measurement

Goniophotometry: fast scan LED bulb measurement

fast scan LED light fixture measurement

TÜV SÜD: Luminaire test with goniophotometer robogonio

Luminaire test with goniophotometer

User Report - Goniophotometry with LED Linear


The LED market is fast-moving, and the trend goes to increasingly small luminaires with continuously improved optics. The light lab of LED Linear, the specialist for linear illumination systems, has been accredited by the DAkkS in acc. with DIN ISO/IEC 17025 since the middle of 2018 and is designed for precisely these challenges.

Dino Iavarone, head of measuring technology, explains how LED Linear does it: "We use the most modern measuring technology. Also, the robogonio goniophotometer allows us to perform measurements very fast and precisely. Speed is worth real money nowadays." In addition, the color spectrum and temperature can even be measured in the outmost angle of radiation. "Making these values quantifiable is becoming increasingly important in optics development." The product development at LED Linear
profits from all these advantages just as much as smaller manufacturers without an accredited lab, because all services are also available to external customers.

Planning stress tests for luminaires and optics: anything can be measured.

Compact, fast, standard compliant: The power of a goniophotometer.

The robogonio: One system for many applications

More about LED Linear


opsira offers multiple configurations and add-ons plus accessories.

Photometer and auxiliary photometer. Flexible and powerful. frc'3.
The High-End-Photometer. Highest precision. Quick scans. frc-f-l.
The spectroradiometer. Complete solution for light and color. spr'3.
The spectrometer. Quick and extensive. spec'3.
The luminance camera. High dynamics and flexibility. luca.
The colorimetry camera. Luminance and color distribution. luca'color.

Customized configuration

Goniometer size and configuration as per your needs and sprecial requirements.



Detectors / Systems

-fGoniophotometer (far field, included in the alpha line)Photometer frc’3
-lGoniophotometer (far field, included in the pro and top line)fast High-End-Photometer (class L) frc-f-l
-spcGoniospectrometerSpectrometer spec'3
-sprGoniospectroradiometerSpectroradiometer spr’3
-siNear field goniophotometer
(near field, far field, ray data)
Luminance measuring camera luca
Photometer frc'3
-sicRay data goniophotometer
(near field, far field, ray data, polychromatic)
Luminance and colorimetry camera luca'color and spectroradiometer spr'3
-rrGoniophotometer system for measuring the retro-reflectionHigh-end photometer (class L) frc-f-l, projector
-hAuxiliary photometer according to DIN EN 13032-4Photometer frc'3 (small design)
-phi-fLuminous intensity and luminous flux measurement with a stationary light sourcePhotometer frc'3 with 7th axis
-phi-lLuminous intensity and luminous flux measurement with a stationary light sourcefast High-End-Photometer
(class L) frc-f-l with 7th axis
-fisGoniophotometric flash measurement
(effective flash light strength according to Blondel-Rey or Schmidt-Clausen)
only available in conjunction with an -l robogonio

Add-on Options

lmgPower measuring devices (current, voltage, power, efficiency Im/W)
klsClimate sensors (temperature, air pressure, relative humidity)
tesTemperature sensors (e.g. PCB or light source temperatures)


Welcome to your own all-round carefree package with robogonio. The wide range of accessories includes integrated power supplies, power measuring devices, multiplexers, electrified mounting adapters and thermal sensors for luminaires. 

Switchboard and multiplexer.
Excellent integration.
Mounting adapter and thermal sensors.
Simplified connection and measuring.
Software- and reporting functions.
At a glance.

Further questions or requests?

Please contact General Manager
Jürgen P. Weißhaar:
Phone +49 751 561890