My shrouded lights are aiming directly at the ground on either side of an outside door, directly downward at a 90* angle. It's a direction that has been super secret technology from the 18th century (and earlier). My neighbors don't like there being light in my backyard. Rather than my lights being aimed down at the ground, they'd like them to shine away from the ground and at the opposing neighbors house. That technology isn't going to happen, 18th century or otherwise, no matter how super secret that technology is.
Lights should for sure point down. The last apartment we lived in had a spot light pointing at a tennis court. We lived on the opposite of the tennis court and across the street, 100 yards away easily. However, this light would blast into our window. Blinds helped, a black out shade would have been no problem, but having the window open at night was a problem. I only mention this as one might be surprused how annoying a light can be from over 100 yards away when pointed directly at you. Pointing down is no issue though, as there were street lamps much closer that were not a bother at all.
"There are no finger prints under water."
Is that guy related to asmo's neighbor?
There are ordinances against light pollution just like noise pollution in many parts of the country and there are more created everyday. They serve two basic purposes. One, to help keep the night sky dark. Everybody likes to see the stars. And two, to protect homes from "light trespass". The codes address both by either limiting the amount of light or limiting the direction of the light. Street lights are common items that people complain about and codes in some areas require municipalities or businesses to install house side shields to keep the light from leaving the property. However a private home is another story all together. If someone wants to regulate their neighbor's lighting, they should live somewhere with an HOA. This guy should drive through the Midwest where every county home has a 750 watt barn light blazing away on the garage/shop/barn.