GL Gonio Photometer GLG A 50-1800

A new model of Type A goniophotometer providing photometric characterization of lamps in H, V axis coordinates.

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Automotive lighting measurements


Automotive and other vehicle lighting product compliance testing becomes a challange for many engineers in the industry. It’s mainly because the cost optimization and increasing speed of new products introduction onto the market puts additional pressure to measure more, faster and better.

The GLG A 50-1800 goniophotometer has been designed for every day application in R&D laboratories and product compliance testing center labs where dependable data is provided by truly user friendly photometric instruments system.

Following the industry standards this goniophotometer system is ready to photometric testing of vehicle LED and other types of lamps luminous intensity distribution in H,V coordinates. Robust design, user friendly interface and top level accuracy available for fast developing industry.

Standards compliance

The GLG A 50-1800 goniophotometer systems are designed for conformance testing of lamps and signals to UN/ECE and SAE /FMVSS Regulations. These are type A systems compliant with the CIE 121-1996 and IESNA LM-75-01 standards for far-field photometric and colorimetric measurement systems.

Reliable and accurate

The system uses tried-and-tested mechatronic components to provide fast, accurate and reliable measurements of automotive, rail and other vehicle headlamps. Additionally, it can be used for photo-metric characterization of traffic signal lamps and airfield lighting systems. This goniophotometer system is designed for lamps of up to 50 kg and the x,y translation stage surface size is 400 x 400 mm.

Controllable and programmable

Depending on the application the system can be paired with the following measuring instruments:
GL PHOTOMETER 3.0 LS + Flicker
A selection of peripheral devices for tests of vehicle headlamps is available.

GLG A 50-1800 Usage

Larger capacity

Production and development teams constantly improving lamps and fixtures make more efforts to provide specifications of their products and verify compliance. This creates increasing demand for faster and more flexible light measuring systems. As changes in the industry are speeding up and products are getting more sophisticated, the need for testing and verification becomes more critical.

This type A GL Goniophotometer can be used in factory laboratories as well as in accredited laboratories and deliver fast and reliable results for the measurements of small and lager lamps. Mechanical design includes increased load capacity up to 50kg, large 400x400mm mechanical stage and 3 motorized axis featuring absolute encoders for improved accuracy.

With easy to use software, precise alignment protocols and extensive automation capabilities, the system offers a new level of performance and usability.

Speedier lamp testing

Default measuring instrument included in the system is the GL PHOTOMETER 3.0 LS + Flicker which has been designed for On Fly ( non stop ) measurements of automotive and other lamps on goniophotometer.

High sampling rate combined with high sensitivity HAMAMATSU sensor allows for continuous measurement of LED during smooth movement of DUT ( Device Under Test ) Thanks to absolute encoder readings the required data can be obtained in much shorter time.

With this super fast measuring instrument, additional light modulation characterization for turn lights and emergency signals is available using the flicker measurement functionality.

Need to measure color?

The GL goniospectrophotometer design offers a turn-key LED light measurement system which can be equipped with one of our optional spectroradiometers to add full color measurement capability.

The GL SPECTIS 5.0 can be used for advanced systems covering extended spectral analysis also outside the visible range from UV to NIR sources angular distribution in a variety of applications.

Our basic instrument GL SPECTIS 1.0 LS is a high sensitivity version of our popular spectroradiometer optimized for fast photometric & colorimetric measurements.

GLG A 50-1800 Features

A Standard Goniometer System Includes:

  • Programmable, robust and accurate Type A goniometer with 3 mechanized H,V and Z axes and DUT moving x,y mechanical mounting table
  • A preconfigured, turn-key system including all instruments with software and a dedicated PC which is tested prior to shipment to customer
  • Unique laser alignment system with mirrors and system control options helps to calibrate system vertical and horizontal alignment and also faster photometric positioning of DUT*
    On-fly measurements available with this new optional instrument combined with optical flicker characterization of DUT*

Optional peripheral devices


High sensitivity version of our popular spectroradiometer optimized for fast photometric & colorimetric measurements


for extended spectral analysis outside the visible range from UV to NIR sources angular distribution in a variety of applications


Choose form available power supplies and current sources for a full electrical characterization of DUT. Advanced power meters and fast current sources from leading suppliers available on demand


TEC controllers and mounts for LED modules thermal stabilization and measurements during goniometric tests are available

  • Support & Installation

Online and On-site extensive know-how support for end-users to help them manage their complex measurements

GLG A 50-1800 Metrics

Photometric Quantities

  • Luminous Intensity Distribution Diagrams
  • Luminous Flux
  • IEC, IES and LTD Formats
  • Centre Beam Intensity

Colorimetric Quantities

  • Correlated Color Temperature – CCT and Duv
  • Color Rendering Indices – Ra, CRI, R1 to R15, TM-30
  • MacAdam Ellipses
  • Angular Color Uniformity

Other Quantities

  • Luminous Efficacy (lm/w)
  • Power Factor
  • Temperature

GLG A 50-1800 Specifications

CIE Goniometer typeFar Field Type A compliant with IES LM-75-01 and CIE 121-1996. 5 axis servo motors with absolute position encoders
H axis movementAngular range ± 100°. Nominal torque 555Nm. Speed up to 10 °/s
H axis resolution0.002°
H axis reproducibility0.05°*
V axis movementAngular range ± 180°. Nominal torque 98Nm. Speed up to 50 °/s
V axis resolution0.002°
V axis reproducibility0.05°*
Z axis movementLinear range 0-800mm. Lifting capability up to 1500N
Z axis reproducibility70 μm
X, Y axis movementLinear range ± 150 mm. Speed up to 40 mm/s
X, Y axis reproducibility70 μm
DUT mounting plateSquare 400×400 mm. Multiple M6 mounting holes
DUT maximum dimension≤ 1800 mm (symmetrically positioned)
Goniometer dimensions1990(L) x 810(W) x 2020(H) mm
Optical axis height1350 mm
Minimum room height2600 mm
Minimum room width4000 mm
Maximum load50 kg
Goniometer weight450 kg
Power supplyAC 110-230V, 3000 W
ControllersInternal controller for all motors. PC connectivity over LAN network. Remote manufacturer support capability. 7 inch LCD touch display on the body of goniometer. Manual all axis controller for operations during DUT fixing.
SafetyEmergency stop button on both sides of goniometer. Optional safety devices with laser scanner or light fence.

*at nominal load

Note: Instrument, firmware and software specification are subject to change without prior notice. All information included in GL OPTIC datasheets and product information available in any form are carefully prepared and included information believed to be true. Please note that discrepancies may occur due to text and/or other errors or changes in the available technology. We advise to
contact GL Optic before the use of the product to obtain the latest product specification.


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