Dr. Robert James Lang is an origami master specializing in technical folding. He is a pioneer in technical origami and is known for his very complex designs, especially insects. He currently resides in California. His origami books include
He has done several collaborations with John Montroll, another origami master.
One of his most famous models is the Black Forest Cuckoo Clock. It is extremely detailed and folding it can take hours or even days. If you pull the bottom handle the cuckoo pops out, just like a real cuckoo clock.