They aren't nearly as accurate past 1000ft. New Jersey has a set requirement at 1000ft without expert testimony. No other state does this, they've bought into the LIDAR infallibility propaganda.
You can bring up in court what the "recommended range" is that they are taught during training. It could be up to 1500, 2000 - never over 2000. Ask what percent are written under 1000ft. Ask if anything over 1000ft is unusual. They are valid questions.
Some departments will use LIDAR up to 2900ft, then they'll get mad when you bring it up. The distance argument is not always going to work, but there is no reason not to bring it up.
The prosecutor may argue you aren't a PhotoOptics expert and have no business arguing lasers. It's really up to the individual judge. Either way, asking about the distance will get the judge's attention.

