The Researchment Of A Small Collimated Solar Simulator

The solar simulator is a kind of equipment about experimental and testment, which simulated the sun radiation property,its simulate a light source about the radiation、 uniformity and collimated stability similarity to the really sun light on ground.The solar simulator application is widely,it play an important role in aspect of energy solar utilization the measurement calibration of solar sensor remote sensing technology and new materials measurement.The article proposed the design scheme of coaxial transmission optical system,and emphasized on the optimized designment of the solar simulator optical system.In order to evaluate the overall performance of the solar simulator optical system,based on the concept of the etendue of the imaging optics,the article considered that the whole system from the illumination system that xenon lamp、ellipsoid condensor and optical integrator to projection imaging system that collimation system must be matching,and analyse the energy transfer of the whole system in the angle of lagrange invariant,concluded the best matching relationship of the relative aperture between ellipsoid condenser、optical integrator and collimated object lens,the relative aperture between these are equal,and satisfied the pupil connected principle,and verifyed that the lagrange invariant is conserved from object surface to image surface,we can obtain the best property of the whole system to increase the overall system performance.Through the illumation design software of Lighttools, we modelled the whole sysytem of the solar simulator and simulated by the Monte Carlo,and verifyed the feasibility of the proposal,and theoretical analysed that the system satisfyed the technical requirement of the radiation not uniformity≤±5%.