aBacklighter (App Backlighter)

How to minimize the brightness upto 0% on any rooted Android

Screen Filter | Lower Screen Brightness Below Default

Power Reduction on Android Platform using the OSCAR Compiler

How it works: Brightness Level

How to lower your brightness on Android

Elite-Source.com Presents Android GB/ICS Useful App #3 - Screen Filter

How to save or increase battery life on your mobile phone [Read Description]