GS-1164 4-Angle Display Color Spectroradiometer

The GS-1164 display spectrometer system is designed to measure color and luminance at 4 simultaneous viewing angles and 1 flicker sensor. 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 displays.

The GS-1164 integrates four GS-1160B spectrometers into one module. All 4 spectrometers operate at the same time during measurement. It delivers the accuracy of spectrometers that are >4x the cost, while having the ability to measure at a much higher speed compared to other spectrometers. 


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Accurate and Repeatable Display Measurement

Cutting Edge and Precise Design

  • Simultaneous luminance & color measurements at 4 angles
  • Integrated flicker sensor
  • Powerful internal MCU for high speed measurements
  • RS-232 serial interface and USB 2.0 Type B interface
  • Gamma Scientific LightTouch uSpectrum 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

Acceptance Angle

1 degree

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*3 Measurement range 0.05~5,000 cd/m2
Accuracy ± 2%
Repeatability (2σ) 0.2% 
Color *2*3 Measurement range 0.05~50,000 cd/m2
Accuracy ±0.002 in CIE 1931 x,y
Repeatability (2σ) 0.0005 in CIE1931 x,y 

Stray Light

-25 dB max *4
Polarized Error

< 2%

Integration Time Range

100 μs to 5,000 ms (fast mode/normal mode)
Measurement Speed *5 1 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 Range 5 to 5,000 cd/m2
Sampling Rate 100k sample/sec (adjustable)
Contrast Accuracy ±1% (30Hz AC/DC 10% sine wave)
±2% (60Hz AC/DC 10% sine wave)
Reproductibility 1% (20 to 65 Hz AC/DC 10% sine wave)
JEITA Accuracy ±0.5dB (30Hz AC/DC 10% sine wave)
Reproductibility ±0.3dB (30 Hz AC/DC 10% sine wave)

*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