Auto EL wafer testing system
Application for 2"
4" 6" LED GaN Epi
9 point auto testing
integrate with Weimin tester for Electronic/Optical parameter testing
Specification of Photometer
Amperes 1.999E-09 to 1.999E-03
Watts 1.999E-09 to 1.999E-03
Joules 1.999E-09 to 1.999E-06
Lux 1.999E-02 to 1.999E+04
Lux-Seconds 1.999E-02 to 1.999E+01
Ft-Candle 1.999E-03 to 1.999E+03
Footlamberts 1.999E-01 to 1.999E+05
Nits 1.999E-01 to 1.999E+05
Specification of spectrometer:
Detector: 2048-element linear silicon CCD array
Effective range: 200-1100nm
nmDynamic range: 2 x 108
Sensitivity (estimate):
•86 photons/count; also, 2.9 x 10-17
joule/count
•2.9 x 10-17 watts/count (for 1-second
integration)
Signal-to-noise: 250:1 (at full signal)
Dark noise: 2.5-4.0 (RMS)