Original construction is proposed to collimate light into a narrow beam. The solution is very compact and provides high efficiency. Two elements are used. Freeform reflector and a plate of PMMA with a special pyramid structure on the first surface. LED source is mounted in a plastic plate and emits light into opposite direction. After reflection from freeform reflector light beam suffers TIR in plastic plate and is collimated with a very high efficiency into desired direction. Thickness of proposed design is about 5 mm. Efficiency and divergence depends on the size of emitting area and diode's package size. For diode with a size of emitting area of 2 mm and a package size of 6 mm last ones were 88% and 7 degree.© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.