From: grarpamp <grarpamp@gmail.com> On 3/3/16, jim bell <jdb10987@yahoo.com> wrote:>> It would have made an excellent jammer. Presumably, better ones exist today.
Plates and lights leaves left only how much beams back from micro scratches in windshields? Probably very little. The emitted laser power of the unit I had the documentation foremitted 15 watts. Most of that would have hit the car, but only a tiny fraction wouldhave been reflected back to the laser gun. Google search "Lambertian". https://en.wikipedia.org/wiki/Lambertian_reflectance (The reflectance of a piece ofwhite paper is primarily 'lambertian': It doesn't act like a mirror;nor does it act like a retroreflector.
And of course that even consumer flat black spray paint seems to still return some fraction of a real laser beam. I didn't and don't expect that anybody was going to re-paint their car for thispurpose. Disabling the retro-reflectors is relatively easy.
Some locales do have laws regarding plate visibility and or modification [via overlays / surrounds]. And some makers do advertise those 3M-like structures in their plate cover products, some even specifying visibility width angles in degrees. I understood that some of these modifications might arguably be called in violation of the law. The main one, covering the license plate, seemsto be a minor issue.
But the headlight / retroreflector thing is uncaptured market at the moment. So like with the plate guys, you should go for it if you can solve the problem of production for and application to all the 3d shapes of those lights / retros on vehicle models. I don't know how big the laser radar market currently is. When I did the research in 1990-91, it was not clear how big an issue it would eventuallybe.