Sciencetech's Solar Simulator Concentrator (FSSC) is a well designed, compact and robust source of very high intensity solar irradiance with high uniformity of testing and characterizing solar cells and other devices up to 5cm x 5cm in size.
It may be operated vertically with the normal (61cm x 61cm) mounting base and included sample holder requiring a total height of 82cm or, optionally, with the base removed the smaller dimensions of 36cm x 36cm x 78cm permit the FSSC to be easily mounted to other equipment. A 75mm x 75mm removable Air Mass Filter and a spectrally neutral 8.3:1 mesh attenuator are included with the FSSC.  Additional spectrally neutral attenuators up to 100:1 are available from Sciencetech at additional cost. Contact sales at Sciencetech for more info. 
Irradiance may be set by power control in 50 steps of approximately +/- 7% of the current level from about 225 Suns minimum without the mesh attenuator or 27 Suns minimum with the attenuator in place under the air mass filter. Note: Irradiance is specified at the flash peak
The Uniformity is better than 2% at the exit plane. Acceptable uniformity may be obtained at working distances of 1mm to 5mm from the FSSC exit plane with uniformity measured and specified at 3mm distance. 
Sciencetech also provides the electronics to generate your I,V curve for your cell (Sold separately). The present system can be operated with one flash per point or with all points taken during a single flash. Depending on the measurements standards a maximum of 48 points can be obtained for the I,V curve using a single flash.
 
Specifications
Target size: 5cm x 5cm
Working Distance: 3mm
Angle of Exit: 47.5 degrees max 30 degrees typical (50%)
Uniformity: +/- 3% +/- 2% typical 
Irradiance: 225 - 4000 Suns (Less than 225 suns possible with attenuator)
Repeatability: +/- 5% +/- 3% typical
Pulse width: 0.8 ms (90% peak), 2.7 ms (50% peak)
Flash interval: 5 sec (<600 Suns) , 2 sec minimum
Energy Setting: 75 - 2400 joules  (2^3.5 - 2^8.5 in 50 steps)
Duty Cycle:  6750/Sun FPM avg (Flashes/Minute average)
Lamp Life: 20,000 shots @ 2000 Suns estimated, 100,000 @ 400 Suns
Reference Output: 5.377uA/Sun  11.0mA typical peak @ 2000 Suns
Note:Exceeding the specified maximum duty cycle may damage the air mass filter and lamp support structure of the light collecting optical system.
Reference Detector output into 10 ohms measured @ 2400 suns peak

Power Requirements
120v version: 100-140 vac 50/60 Hz, 25 Amp surge on fast charge, 10 Amp surge slow charge
230v Version:  200-245 vac 50/60 Hz, 16 Amp surge on fast charge, 6 Amp surge slow charge