HOLOEYE´s Spatial Light Modulator (SLM) systems are based on translucent or reflective liquid crystal microdisplays. These devices can modulate light spatially in amplitude and phase, so they act as a dynamic optical element. The optical function or information to be displayed can be taken directly from the optic design software or an image source and can be transferred by a computer interface. Implementation is accomplished using the VGA or DVI port of a standard PC graphics card. The Spatial Light Modulator can be used just like an external plug & play monitor. In many cases no additional optics are necessary. The Spatial Light Modulator can be incorporated in existing optical setups and devices. To guarantee the best performance, optical characterization measurements (e.g. phase modulation) are performed by HOLOEYE for each individual device.