https://www.youtube.com/watch?v=z3YMxM1_S48
This should be an array of lenses,whom can catch more than 180° of light (infrared) or4Pi stereoradiants... You can see. Seems sensible.
Post scriptum: To let a point be hotter than ambient,with the environment temperature
Post post scriptum: LibreEnergia,what do you think?