Complex technical requirements
• The solar simulator was required to match the solar spectrum with a Class A spectral match in the near infrared region from 700 nm to 1100 nm.
• The optical system was required to produce a uniform field of light over a relatively large 3-dimensional volume (1.5×1.5 x 0.5 m3).
• Limitations of the lab space were an additional constraint on system design.
• The customer required the light to illuminate a vertical target plane from an off-axis angle. This is due to their internal set-up which required free space directly in front of the target plane. Having the light come at an angle was the most intuitive solution.
• Extensive research and development was required from Sciencetech’s engineering team to illuminate the target plane from the requested off-axis angle while still maintaining the three dimensional volume uniformity.
• The appropriate light source, optical set-up and filtering scheme to achieve the required spectral shape had to be configured and determined.
• The solar simulator system was also required to maintain the overall temperature, given the constraints of the room it would be placed in.
• Also the customer requested for a sound level limitation which required extra testing and redesigning work involving the internal workings of the solar simulator system.
• The necessary output irradiance had to be attenuated in increments down to 10% of the maximum power output. Further redesigning and research was required to achieve the attenuation of the light source(s) while maintaining uniformity.