PUZZLE 020 In the Spotlight

There is a silhouette of someone standing on a pitc-black stage.
They're waiting for the lights to come on so they can dazzle the audience.
Can you light up the whole stage using only four spotlights?
The lights change direction if they hit a mirror.
Touch a light to switch it on or off, and illuminate every single square with the spotights.

Hint 1

You only need to turn on four lights.
To illuminate the entire stage, switch on two lights on the right and two on the left.

Hint 2

Switch on one of the uppermost lights.
Figure out for yourself whether it should be the one on the left or right.

Hint 3

Switch on one of the lights on the middle row.
Decide for yourself whether it should be the one on the left or right.

Super Hint

Switch on a light two down from the top and another light two up from the bottom.
Should you go for the left or the right?

Answer for 'In the Spotlight'

The answer is as follows.

1. The top on the left.
2. The second from the bottom on the left.
3. The second from the top on the right.
4. The fourth from the top on the right.