thanks for the math and sanity checking!

Originally Posted by
rns0504
Interesting notes...
The Chinese have implemented a setback finally!
I see them advertising these as 85 degree wide angle scanners
They havent specified a beam size yet but there appears to be two mirrorsets, one with a 8.5mm x 8.5mm X mirror, and another with a 10.5mm x 10.5mm X mirror.
Some quick math shows:
FOR THE 8.5 MM MIRROR
(8.5 mm) / sec(66.25 deg) =
3.42334686 millimeters is the largest beam which can scan 85 degrees
FOR THE 10.5 MM MIRROR
(10.5 mm) / sec(66.25 deg) =
4.22884024 millimeters is the largest beam which can scan 85 degrees
Again, they didn't specify beam sizes but looking at the mirrors, 85 degrees is believeable. But for the small mirrors, the largest the beam diameter can be is about 3.5mm, and for the larger mirrors, about 4.25mm
(If anyone is wondering where those numbers come from... 45 degrees is nominal at rest. 85 degrees optical is 42.5 mechanical peak to peak, or 21.25 degrees in either direction, from nominal. 45 degrees (nominal, at rest), plus 21.25 is the 66.25 used above. This would be the maximium mechanical angular excursion needed to reach 85 optical.)
suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.