A 2/3-inch lens will do this if the lens is in a wide open setting-the iris is full open. Light rays will bounce all around between the rear of the lens and the MOS sensors.If you can stop the lens down a stop or two, the problem will usually go away or at lease minimize. Dial filter #1 into position to let the maximum amount of light into the camera. If you are using it outdoors on a sunny day, use filter 2 or 3 to avoid too small of an f-stop. The “sweet spot” for 2/3-inch lenses on a 370 seems to be around f5.6-f8. Performance will also depend on the speed (minimum f-stop) of that particular lens. Generally the faster the lens, the more light it can gather and the smaller the f-stop you can use in dim light.
Light your scene as best you can and stop the lens down to f2.8-f4 and it will look much better.
Not my monkeys. Not my circus.