Line Scan Bar is a CMOS-based sensor for optical image capture. The image is captured line-by-line, and this data is then composited into a complete image by an external frame grabber card. The light reflected by an object through a lens is recorded in the Line Scan Bar and directed to a photodiode. This converts the incoming light into an electrical signal whose strength is proportional to the light intensity. In an analogue to digital converter, the signal is finally converted into an 8- or 10-bit value. An essential part of the Line Scan Bar is the ‘Grin lens’ - a gradient-index lens, allowing distortion-free 1:1 representation of the object on the sensor surface, thereby crucially contributing to the high image recording quality without any optical distortions. The sensor is also a trilinear sensor, i.e. it has a separate sensitive area for red, green and blue light. It is therefore a true colour sensor that records true-colour images. For applications that do not require a RGB image, the sensor is also available in a monochrome version that only detects gray values.