Originally posted by TomK Oh, RioRico, I can see it now.
Photographer arrested for shining laser at planes taking off and landing at small local airport.
My ancient (2004) Sony DSC-V1 has what's called Hologram AF,
"an AF fill light system that applies laser holograms to enable you to still shoot images in dark places. The Hologram AF system uses gentler radiation than conventional high-brightness LEDs or lamps, thus satisfying Laser Class 1 specifications and maintaining higher safety for human eyes." The manual says it's safe to look at close-up but may be dazzling. I've used it at airports and I'm not in jail. Yet.
It looks like the trick is, instead of a single laser beam, it emits a matrix -- I'll guess a sub-milliwatt laser is diffracted into numerous ultra-low-powered beams. Anyway, Sony had this system up for a few years, then stopped, and I don't know why. Such ranging seems like a good idea to me. Just don't hack it for high-power output to blind rude drivers.