The GS-1164 View Angle Display Spectrometer system is designed to measure color and luminance at four different angles. Color and Luminance measurements are made simultaneously at 0, 30, 45 and 60 degrees. The GS-1164 integrates four spectrometers into one module for high speed and accurate spectral measurements of Displays. A flicker measurement system is also included. The platform’s cutting edge technology is superior to filter based colorimeters and not susceptible to filter matching errors. It delivers true spectral based measurement accuracy required for high color saturation and wide color gamut OLED, micro LED, and quantum dot displays.

Accurate and Repeatable Display Measurement

Cutting Edge and Precise Design

  • Simultaneous luminance & color measurements at 4 angles
  • Integrated flicker sensor: 100K samples/second
  • Luminance, CCT, CIE x, y, u’, v’ and spectrum
  • Contrast, white balance and color gamut determination
  • Auto darkness correction
  • USB 2.0 and RS-232 SCPI command compliant and SDK/API library support

In addition to our exceptional technical and functional capabilities, each GS-1164 is fully calibrated and traceable through Gamma Scientific’s ISO/IEC 17025 accreditation by NVLAP (lab code 200823-0).

Measurement System


CMOS linear image sensor

Wavelength Range

380 to 780 nm

Wavelength Data Increment

1 nm

Number of Angles

4 angles, 0/30/45/60 degree

Measurement Spot Size

12 nm at 65 mm distance at 0 degrees

Wavelength Reproductibility

± 1nm *1

Spectrum – Single Angle Measurement Specifications

Luminance *2*3Measurement range0.05~5,000 cd/m2
Accuracy± 2% 100 to 5,000 cd/m2
± 3% 0.2 to 100 cd/m2
± 4% 0.05 to 0.2 cd/m2
Repeatability (2σ)0.2%  100 to 5,000 cd/m2
0.5% 0.2 to 100 cd/m2
0.8% 0.05 to 0.2 cd/m2
Color *2*3Measurement range0.05~50,000 cd/m2
Accuracy±0.002 in CIE 1931 x,y for white 100 to 5,000 cd/m2
±0.003 in CIE 1931 x,y for white 0.2 to 100 cd/m2
±0.005 in CIE 1931 x,y for white 0.05 to 0.2 cd/m2
Repeatability (2σ)0.0005 in CIE1931 x,y for white 100 to 5,000 cd/m2
0.001 in CIE 1931 x,y for white 0.2 to 100 cd/m2
0.002 in CIE 1931 x,y for white 0.05 to 0.2 cd/m2

Stray Light

-25 dB max *4
Polarized Error

< 2%

Integration Time Range

100 μs to 5,000 ms (fast mode/normal mode)
Measurement Speed *51 to 2 samples/S for Y at 0.5 cd/m2
15 to 30 samples/S for Y at 10 cd/m2
20 to 30 samples/S for Y at 50 cd/m2
20 to 30 samples/S for Y at 100 cd/m2

Digital Resolution

16 bits


Measurement Range5 to 5,000 cd/m2
Sampling Rate100k sample/sec (adjustable)
ContrastAccuracy±1% (30Hz AC/DC 10% sine wave)
±2% (60Hz AC/DC 10% sine wave)
Reproductibility1% (20 to 65 Hz AC/DC 10% sine wave)
JEITAAccuracy±0.5dB (30Hz AC/DC 10% sine wave)
Reproductibility±0.3dB (30 Hz AC/DC 10% sine wave)
Capture FunctionOne time/Continuous
Operation Mode1. USB 2.0: High speed device, using LightTouch uSpectrum library
2. RS-232: For PC and embedded purposes, using SCPI command
Integration ModeAuto/Manual
Dark CalibrationYes (auto)
Measuring Parameters (Flicker)

Max/Min, Average, RMS, Frequency, JEITA, VESA, Flicker Percentage (IES), and Flicker Index (IES)

System Configuration
Dimensions247 x 194 x 64 mm (H x W x D)
Weight2.5 ± 0.2 kg

*1    Input source must be a stable light source
*2    Measure in normal mode with temperature 23±2 °C and relative humidity 50% or less
*3    Repeatability test is based on the status of shutter opening
*4    Input the 550nm monochromatic light and measure the stray light ratio at 550nm ± 40nm
*5    Testing condition: Sync mode at 60Hz. Sample speed depends on the measured sample. If the sample uses PWM, it will take longer