This is a really cool concept! The term used for connecting mirrors to rotate together is a ganged heliostat. Most papers about ganged heliostats don't do anything fancy like what you describe, but there are some patents that show a nice way of connecting the rods to give the correct angles using a slightly different concept than what you are describing [1]. I previously made a visualization of how that concept works (click and drag the sun) [2].
I've not seen exactly what you describe published anywhere, but it sounds very smular to something I thought about as well. See this 2d illustration [2]. Is this the same as what you are describing?
I had a masters student try to make it mechanically. It turns out that though it's an elegant concept, you still end up with quite a few moving parts so it's a bit tricky.
[1] https://patents.google.com/patent/US20060060188
[2] https://folk.ntnu.no/haakonjj/ganged_heliostat_illustration....