Rotating prisms for scanning lasers are old technology, they were used extensively in photo imagers used to produce film artwork for the printing industry, the

Rotating prisms for scanning lasers are old technology, they were used extensively in photo imagers used to produce film artwork for the printing industry, the most famous of which was the Lasercomp. I was working with these devices in the early 80's. I suspect there is a lot of precident patents and prior art. https://www.prepressure.com/prepress/history/events-1976 https://www.prepressure.com/prepress/history/events-1976