Brilliant deduction !!

there would be 16 dots of 3,000 F heat transferring into the
collector plate.

overall the collective amount of heat that would be transferring
into the collector plate would be 48,000 F

the overall temperature of the collector plate could never
achieve a temperature above 3,000 F

but with heat transfer the entire plate could achieve a temperature really close to 3,000 F and this would depend
only on the material and thickness of the collector plate
and the amount of heat that is transferring away from the collector plate via some type of heat sink that is utilized
to collect the heat energy.

such as an array of TEG devices or a fluid tubing system to
circulate the heated fluid to another location for energy conversion or storage such as zeolite.

http://www.extremetech.com/extreme/13052...heat-than-water

also the tiny dots of 3,000 F can be adjusted to larger dots
that will transfer a lower amount of heat to the collector
plate so that you can have 16 larger dots of say 1,500 F
or 212 F etc by adjusting the distance from the lenses to the
collector plate.



3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.