Is it leagal or moral for a police officer to blind you with the spotlight when he is on radar patrol to sig?

He blinded me with his spotlight while I was traveling by him on the highway, he lying in wait in the median U-turn, at 1:30am on the interstate. If his intentions are to pull out and pull me over anyways. I was the only car in sight and his car was unmarked at least no reflective decals..