The wine glass

Your answer is correct.

The closer the wine glass moves to the screen, the smaller is the illuminated area until only a narrow line is illuminated particularly brightly. The closer the wine glass is moved towards the screen then, the bigger becomes the illuminated area again. Thus there must be a distance at which most of the light is focussed onto a small area.

Is energy produced when focussing the light?

b) No, the additional light in this area has been deflected from the surrounding.

a) Yes, the narrow, focussed light area is clearly brighter than a common candle could shine.