Improve your time to market. Automated laboratory level gonio spectrometer now available for everyone.

gonio spectrometer laboratory goniometer light measurement goniospectrometer

Accelerate your time to market

Traditional photometry labs are a thing of the past. The performance of LED based luminaires is highly angular dependent and requires a new level of sophistication for complete characterization. GL GONIO SPECTROMETER GLG 30-1800 combines the functionality of a goniophotometer with the features of a spectroradiometer to measure brightness and to check angle dependence luminous intensity distribution.
Specifically engineered for lighting manufacturers who want to stay ahead of the competition and take control of their product development earlier, the GLG 30-1800 light goniometer offers exceptional value. For many companies, the payback period is less than 5 years when they compare the purchase of a system vs. sending lamps to an external lab. It also leads to more frequent characterization resulting in better products that reach the market faster.

Simplicity in design

The GLG 30-1800 gonio spectrometer removes the dependency on highly skilled technicians to deliver reliable results. With easy to use software, precise alignment protocols and extensive automation capabilities, the system offers a new level of performance and usability.

One click photometric file output

While this goniospectrophotometer generates spectral and color data at any angle, it remains true to its primary use – generating IES/LDT output files, simply and with the click of a button.

A wide range of luminaires

With an extended max load up to 30 kg and 1800 mm diameter max dimension, the GL GONIO SPECTROMETER GLG 30-1800 will cover most of the demand for testing. Have a range of small and large fixtures? No problem. The system can accurately characterize big and small fixtures without any mechanical changes.


Highly competitive LED lighting market

LED manufacturers need to make additional efforts to continuously improve their products and deliver specifications of their products to light designers requiring testing in a photometric lab. As your business grows and the number of products in your portfolio increases rapidly, the need for testing and verification becomes more critical. At GL Optic, we ensure manufacturers and developers are prepared with an ability to control and improve the lighting quality from initial component purchase though product development, and up to the final product testing.


When you simply have too many lamps and luminaires to test, it becomes expensive and time-consuming to continue sending lamps to an external laboratory. Not only you can control this process yourselves, you can save time and money in the end while also building up important knowledge inside the company that will benefit future products.

How do you choose the optimal light measurement goniometer?

We understand that many customers have concerns about how complicated it is to set up and operate a goniometer system in their own laboratory. This was a driving force behind the design of the GL gonio spectrometer – create an easy to use system for any technical person without any compromise in accuracy or reliability. The GL goniospectrophotometer design offers a turn-key LED light measurement system which can be easily installed and operated by every lighting manufacturer or laboratory.


A standard GL GONIO SPECTROMETER system includes:

  • C type goniometer in C-γ coordinate
  • Optical axis in horizontal direction
  • Angular luminous intensity measurements
  • Luminous flux measurements
  • LDT and IES file generation
  • Optional features

  • Class A laboratory photometer
  • Current or power sources and power meter
  • TEC Control or temperature measurement

    Photometric quantities

  • Light intensity distribution
  • C-gamma diagram
  • Cone diagram
  • Luminous Flux
  • IES and LDT Formats
  • Maximum luminous 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 (i.e. cos φ)
  • Temperature
  • GL GONIO SPECTROMETER GLG 30-1800 Specifications

    Large LED modules and large luminaires
    Compliance with the following: CIE121-1996, CIE S 025/E:2015
    CIE Goniometer typeFar Field Type C with horizontal optical axis
    DUT moving
    3 axis stepper motors with worm drive gear boxes
    Total position encoders directly on axis
    Angular range C axis± 180°
    Angular range γ axis± 180° theoretical (usable depending on geometry due to shadowing)
    Angular positioning precision0.1°
    Reproducibility C axis0.004°
    Reproducibility γ axis0.004°
    Angular speed C axisup to 45°/s
    Angular speed γ axisup to 45°/s
    DUT photometric center positioning700 mm, stepper motor operated
    Photometric distance9 m – 27 m Distance >= largest DUT dimension x (5 to 15) (CIE S 025/E:2015)
    DUT mounting plateRound d=250 mm
    (bread board)Fixing: multiple mounting holes: M3, M4, M5, M6; chuck with sliding blocks
    Maximum DUT dimension≤ 1800 mm (diameter or diagonal)
    Goniometer dimensions800 x 1714 x 968 mm (W x H x D)
    Maximum operating footprint diameter2400 mm
    Maximum load30 kg
    Goniometer weight360 kg
    Power supply and max. consumptionPC connection by Ethernet; 110-230 V 600 W
    Sensor typeGL OPTIC Spectrometer range:
    GL SPECTIS 1.3 LS (recommended)
    GL SPECTIS 1.0 Touch + Flicker
    GL SPECTIS 4.0
    GL SPECTIS 5.0 Touch
    GL PHOTOMETER 3.0 LS + Flicker

    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.

    Below you will find materials ready for download. Click on the file that interests you to download it.

    Related products


    GL PHOTOMETER 3.0 + Flicker is a high sensitivity and high sampling rate photometer capable of extensive measurements of light flicker in addition to regular photometry.


    GL SPECTROSOFT M is an analytical PC-based software designed for laboratory applications, field work, production quality control and for general light assessment purposes.

    GL SPECTIS 4.0 M

    Precise testing of special UV VIS NIR lamps and sources.

    Get quote