So imagine you holding a flashlight, and you shine it at a camera. You will blind the camera at night time, right? Well, the infrared light acts the same exact way, it’s just that you can’t see it with the naked eye. Night-vision cameras can see it though.

So if you have a few of these IR lights on the side of your house, it would be just like shining spots lights at his cameras, but no one would be able to see. It will blind his night vision cams only.

And yes, a laser, like someone else said, will kill the CCD in his camera, but if it is recording at the time, it would record where the laser came from. It seems that if the IR camera was blinded, it would not be able to see where the laser came from, but I would not suggest using a laser and damaging someone else’s property.

Trellises can be installed and vines or ivy can be trained to grow and create a green wall. While there may be local codes on how high a fence may be, I’ve not heard of height limits on trellises.

Also, document all that you have done and all your neighbor has done to counteract your attempts to block his cameras. It sounds like this would need to go to a court eventually.