I am designing a LED-based solar simulator for a small area of 1cm square for 365 nm to 1050 nm range. Can anybody suggest how to homogenize all the wavelength together on a sample plane? the power density needed at the sample is 1 Sun.
Thanks for your reply, why to use a lens in front of each led, already the light from led is diverging in nature and just by placing the LEDs in a plane and mixing the divergence of each led would not be sufficient.