Was there a focused beam emitted from a round deflector dish on any Star Trek ship?

mira

Member
I have an image in my mind of a deflector dish, with light moving from the top down both "sides", meeting at the bottom, forming a cone and then a focused beam from the point of the cone. I am NOT talking about the Death Star in Star Wars. If there is one, which ship, which episode of which series or which movie?
I am actually looking for an image of the cone and beam.
 
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