GL Gonio Spectrometer GLG_2-300

GL Gonio Spectrometer GLG_2-300

The newest GL Gonio Spectrometer for DUT up to 300 mm!

ENTER THE WORLD OF THE GONIOSPECTROMETER
GL Optic’s latest innovative product combines the functionality of a goniophotometer with the features of a spectroradiometer to measure brightness and to check angle dependence luminous intensity.

MEETING THE DEMANDS OF THE MARKET
Traditional goniometers use a photometer as a measuring probe. However, contemporary SSL (Solid State Lighting) such as LED and/or OLED lamps and luminaires require the use of spectroradiometers. This is because LEDs are narrow-banded sources and simple systems based on photodiodes can cause additional errors (due to the LED spectral curve which is limited to a small spectral range).

To find more information about the advantage of our goniometer over other instruments (which measure luminous intensity along with colorimetric values like colour, colour temperature and CRI of LED-based luminaires), please read the article.

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Unique features

The new GLG-2-300 is a table top model specifically designed for LED modules and component testing. This setup can also be used for smaller lamp measurements. The system connected to a PC holds devices up to 2-3kg and 300mm diameter. Angular resolution of 0.1° and C-plane and λ angle +/- 180° make this instrument a universal solution for different applications.

WHAT DOES A GONIOSPECTROMETER MEASURE?

Use a goniospectrometer to check the angle dependence luminous intensity along with colorimetric values like color, color temperature and CRI.

A STANDARD GONIOMETER SYSTEM INCLUDES:

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

OPTIONAL FEATURES

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

GONIOMETRIC MEASUREMENT PRINCIPLE

The luminaire is rotated around the horizontal and vertical axis and at each position the photometric signal is measured at a fixed photometer location in the far field of radiation. The C-plane in which the luminous intensity is measured is controlled by the horizontal axis. In each C-plane, the angular luminous intensity distribution of the luminaire under test (LUT) is measured as a function of γ angle by turning the LUT with the vertical axis.

HOW DO YOU CHOOSE THE OPTIMAL GONIOMETER?

The dimensions and luminous area shape of a luminaire and required accuracy determine the size of the goniometer. The instrument needs to be adjustable to position the photometric center of luminaires with varying thicknesses (distance from its back surface to the photometric center) to the turning axes. For measurement of luminaires with an upward radiation, the maximum γ angle of the goniometer and luminaire mounting should be such that the dead angle is minimized and the total radiation angular range is covered.
  GLG-2-300
CIE Goniometer type Far Field Type C with horizontal optical axis DUT moving; 2 axis stepper motors; Belt drive system
Angular range C axis ± 180°
Angular range γ axis ± 180° theoretical (usable depending on geometry due to shadowing)
Angular positioning precision 0.1°
Reproducibility C axis 0.1°
Reproducibility γ axis 0.1°
Angular speed C axis up to 45°/s
Angular speed γ axis up to 45°/s
DUT photometric center positioning 0 to 170 mm via hand crank
Photometric distance 1.5 m - 4.5 m Distance >= largest DUT dimension x (5 to 15) (CIE_S025/E:2015)
DUT mounting plate (bread board) Square 80 x 80 mm; Fixing: Multiple M6 mounting holes
Maximum DUT dimension ≤ 300 mm (diameter or diagonal)
Goniometer dimensions 530(L) x 400(W) x 345(H)mm
Maximum operating footprint diameter 1100 mm (when vertical axis is fully extended)
Maximum load 2 kg
Goniometer weight 5.5 kg
Power supply and max. consumption PC connection by USB A-B; 110-230 V; 40W
Sensor type GL Optic Spectrometer range: GL Spectis 1.0; GL Spectis 1.0 Touch; GL Spectis 5.0 Touch;
The new GLG-2-300 is a table top model specifically designed for LED modules and component testing. This setup can also be used for smaller lamp measurements. The system connected to a PC holds devices up to 2-3kg and 300mm diameter. Angular resolution of 0.1° and C-plane and λ angle +/- 180° make this instrument a universal solution for different applications.

WHAT DOES A GONIOSPECTROMETER MEASURE?

Use a goniospectrometer to check the angle dependence luminous intensity along with colorimetric values like color, color temperature and CRI.

A STANDARD GONIOMETER SYSTEM INCLUDES:

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

OPTIONAL FEATURES

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

GONIOMETRIC MEASUREMENT PRINCIPLE

The luminaire is rotated around the horizontal and vertical axis and at each position the photometric signal is measured at a fixed photometer location in the far field of radiation. The C-plane in which the luminous intensity is measured is controlled by the horizontal axis. In each C-plane, the angular luminous intensity distribution of the luminaire under test (LUT) is measured as a function of γ angle by turning the LUT with the vertical axis.

HOW DO YOU CHOOSE THE OPTIMAL GONIOMETER?

The dimensions and luminous area shape of a luminaire and required accuracy determine the size of the goniometer. The instrument needs to be adjustable to position the photometric center of luminaires with varying thicknesses (distance from its back surface to the photometric center) to the turning axes. For measurement of luminaires with an upward radiation, the maximum γ angle of the goniometer and luminaire mounting should be such that the dead angle is minimized and the total radiation angular range is covered.

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