As a world leading company within the semiconductor industry SiTek Electro Optics AB develops, manufactures and sells high quality position sensing detector ( PSD). SiTek offer a wide range of standard PSDs and customised PSDs perfectly adjusted for the customer applications. With soon 40 years of experience within the PSD-technology gives SiTek great opportunity to customize the PSD according to the customer wishes. Analogue and unique method for determination of the position of a laser spot. Examples of applications are measurements for motions, distance, thickness, vibrations, straightness and surface measurements. The newest development is SEEPOS the best optimising tool for your PSD system, extremely versatile, perfcect for development.