Very cool Iris Door/Diaphragm.
Found this link, Frank Zhao, still studying it.
https://eleccelerator.com/3d-printed-mechanical-iris-dome-all-one-piece/

and:
https://cad.onshape.com/documents/ce2b47eea2aecc8a5af6d089/w/0dd07bf8a5f9c8a8d7210b5c/e/6c2bb5a57e74b49452e98e1f

- Brian