Solutions
QRAD provides instrumentation solutions for test and calibration in the field of photometry and radiometry based on the technologies transferred from KRISS.
- Detector Test Systems
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Measurements of optical detector properties such as spectral responsivity, non-linearity, dynamic range, sensitivity, and spatial/angular/temporal response characteristics can be realized with high accuracy and reliability.
Spectral Responsivity Systems (SRS)
: Testing Photodiodes- Fully automated instrument for testing the spectral characteristics of optical detectors
- Wavelength range from 300 nm to 1600 nm
- Traceable to KRISS with uncertainty of 0.6 % ~ 1.8 % (k = 2)
- Customized solution provided with a software
- Model variations:
- SRS: Basic model with a collimated or focused beam for spectral power responsivity
- SRS-IS: System with an integrating sphere for spectral irradiance responsivity
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CMOS Test Systems (CTS)
: Testing Image Sensors- Automated measurement of conversion efficiency of a CMOS image sensor at a selected source (monochromatic or white)
- Uniform irradiation on the whole image sensor area > 20 mm x 20 mm
- Sensor input calibrated and monitored for radiance (W/m2sr) or irradiance (W/m2)
- Customized instrumentation solution including a software
- Model variations:
- CTS: Basic model
- CTS-QE: Spectrally tunable QE measurement
- CTS-PTC: PTC Measurement in high dynamic range
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SPAD Test System (STS)
: Testing Single-photon Detectors- Easy and fast test of key performances of a SPAD at a selected wavelength
- Dark counts, dead time, after-pulsing probability
- Detection efficiency (based on photon irradiance calibration)
- Customized instrumentation solution including a software
- Model variations:
- STS-IS: Integrating sphere-based flux source
- STS-GM: Geiger-mode operation module for APDs
- STS-AC: FPGA-based auto-correlation measurement unit
- STS-SP: Spectrally tunable detection efficiency measurement in free space
- STS-SP-F: Spectrally tunable detection efficiency measurement in fiber
