Products > Light measurement > Goniophotometric measurement system > GP series
The display technology required in the display market is becoming more and more advanced. In line with this, the GP series measures the goniophotometric characteristics of large displays, Micro-LEDs, and OLEDs up to 2,400mm. It can handle a wide range of lighting fixtures from room lighting to floodlights and is customizable to meet your multi-purpose needs.
Up to 2,400mm of LED lightings can be measured
Compatible with Micro-LED, OLED and large display's goniophotometric measurement
By automatically controlling a biaxial goniometer to measure spectral distribution at every angle, spectral total radiant flux, total luminous flux, chromaticity, color temperature, etc. can be obtained
The newly adopted detector has a wide dynamic range
Compliant with IESNA LM-75 and CIE121
Model | GP-500 | GP-1100 | GP-2000 |
*Optics | type C | type C | type B, type C |
Optical path length | < 500mm | 500 ~ 1,500mm | 1,500 ~ 12,000mm |
Measurable sample | LED chip | Micro-LED, Mini-LED panel | general lighting incl. fluorescent tube |
Detector | array spectrometer | ||
Wavelength | **360 ~ 830nm |
*two-axis goniometer
**wavelength for the detector can be adjustable
Types of the coordinate system in light distribution measurement(JIS C 8105-5)
Coordinate system | Vertical angle | Horizontal angle | IESNA LM-75 | ||
Mark | Range | Mark | Range | ||
αβ | α | -90° ≦ α ≦ 90° | β | -180° ≦ β ≦ 180° | type B |
θφ | θ | 0° ≦ θ ≦ 180° | φ | 0° ≦ φ ≦ 360° | type C |
Angular distribution(light distribution)
Spectral radiant flux(spectrum)
Chromaticity(u,v) 〔CIE 1960UCS〕
Spectral radiant intensity(spectrum)
Chromaticity(u’,v’) 〔CIE 1976UCS〕
Chromaticity(x,y) 〔JIS Z 8724〕
Dominant wavelength and Excitation purity 〔JIS Z 8701:1999〕
Correlated color temperature and Duv 〔JIS Z 8725〕
Color rendering index(Ra, R1 ~ R15) 〔JIS Z 8726〕
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