⁣Sun patents

Simulating certain environmental conditions from outer space patent -
https://patents.google.com/patent/US3010220A/en
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-artificial sun radiator -
https://patents.google.com/patent/US3118065A/en
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Solar simulator-
https://patents.google.com/patent/US3247367A/en
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Laboratory sun simulator -
https://patents.google.com/patent/US3202811A/en
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Illumination system including virtual light source -
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https://patents.google.com/patent/US3239660A/en

Official nasa illumination system including virtual light source document -
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https://ntrs.nasa.gov/api/citations/19710020816/downloads/19710020816.pdf