LED Solar Simulator
LumiSun™ 50

Precision Sunlight Emulation in Benchtop Format

Compact and Flexible Solar Simulation Technology for Research Labs

An innovative benchtop LED solar simulator, LumiSun™ 50 is perfect for measuring photovoltaic cells’ efficiency and spectral response in research labs. Photochemistry, photobiology, materials testing – all these use cases benefit from LumiSun™ 50’s performance

Featuring the same LED array and optics architecture as Innovations in Optics’ OEM solar simulators favored by leading PV manufacturers worldwide. LumiSun™ 50 lives up to Class AAA IEC 60904-9 Ed. 2, ASTM E927-19, and JIS C 8904-9 standards for spectral match, uniformity of irradiance, and temporal stability.

LED Solar Simulator
LED solar simulator LumiSun™

LumiSun™ 50 LED Solar Simulator Highlights:

LumiSun™ 50 LED Solar Simulator Overview

Innovations in Optics’ patented light collection and projection optics certainly benefit LumiSun™ 50’s performance: It provides a 50 X 50 mm illumination field with excellent uniformity, outshining other LED-based designs on the market today. Unlike conventional solar simulators equipped with discharge lamps, LumiSun™ 50 incorporates a multi-wavelength array of long-lasting LEDs.

This unit features three preset solar reference spectra that emulate sunlight with remarkable accuracy. You can also configure user-defined spectra by controlling all installed LEDs individually and adjust LumiSun™ 50’s irradiance from 0.1 to 1.5 SUNS.

Setting up the LumiSun™ 50 solar simulator is an exercise in convenience. The LED light source sits in a freely rotatable air-cooled housing. A converging pair of red dots from integrated laser pointers helps you find the optimal working distance. An RS-485 interface with Modbus RTU communication protocol is built in to enable remote control.

LED Solar Simulator
LED solar simulator LumiSun™: Exposure field

LumiSun™ 50 LED Solar Simulator Output

Irradiance Spectrum at 1 SUN

LED Solar Simulator LumiSun: Spectral Power
Wavelength [nm]Irradiance [W/m2]Share [%]
400 - 50018620.5
500 - 60018520.4
600 - 70015917.5
700 - 80012814.1
800 - 90010111.1
900 - 110014916.4

1The total solar irradiance of the AM1.5 Global Spectrum (AM1.5G) is defined as 1,000 W/m2 integrated over a 0 – 4,000 nm wavelength interval. The above total of 908 W/m2 is an abridged definition of 1 SUN irradiance when integrating over the 400 – 1,100 nm interval. See the ASTM G173−03 (2020) reference solar spectrum.

System Properties and Specifications

ComplianceClass AAA (IEC 60904-9 Ed. 2, ASTM E927-19, JIS C 8904-9)
Irradiance0.1 - 1.5 SUNS
Spectrum400 - 1,100 nm
Output control
  • Solar reference spectra presets
  • Output of individual LEDs is fully adjustable
Illumination field50 X 50 mm
Working distance151 mm (light source exit aperture to test plane)
Operation modesSteady-state and pulsed (external trigger, 200 μsec minimum pulse width)
Warm-up time5 minutes from cold start
Long-term instability≤ 0.3% for 60 hours (after 5-minute warm-up)
Operating environment20 - 40°C, < 85% relative humidity (non-condensing)
Thermal managementAir cooling with sensors for safety shutdown
Communication interfacesSerial (RS-485)
Dimensions (W H D)116 X 21 X 10 cm6.3 X 8.1 X 3.7"
Weight10.5 kg1.1 lbs
Power supply24 VDC / 100 W

1Without rack and pinion mounting hardware

Let your solar simulation shine!