Camera Flash in Blender Game Engine

I m trying to make a camera flash when my object comes in to contact with an other object. I know how to use the collision sensor, but I don’t know which actuator should I use with the lamp to give that effect.

animate your lamp energy going from 0.0 to a big number, then fade back to 0.0 over a few frames. then use an action actuator in “Play” mode. dont forget to set the start and end.

Works perfectly!