Lantern

Changes 1.13 : Now it starts using last light selected.

APK Description:

Lantern is a minimalist application: only a white screen with maximum brightness and a slider button to turn on the flash. Simple as that. No more annoying options.
If you want a little light without dazzle with only your screen on, this is your application. Start it and you have light.
But if you still need more light turn on the camera flash.

Screenshots: