TEM Messtechnik ALIGNA 4D Modular Laser Pointing Beam Alignment and Stabilization System BeamLock PSD C NIR Used in good shape. Powers on and connects. Includes the following components: •Aligna controller system •Two MoPiA Motorized and Piezo hybrid mirror mount actuators (Labelled M1 and M2 in the photos) each with elliptical mirrors •PSD 4D C position sensitive detector (labelled as NIR optical range) •Laser diode •Beamsplitter •Two aiming targets •Plastic snap-together track The controller system has the following modules: •uC 68332 interface board module •SPM cw/pulse module •8 channel pizeo driver module •4 channel motor driver module •Powerblock power block module (accepts 115v or 230v depending on setting) Nothing else is included other than what is shown in the photos. Does not include control computer or software, or any extension cords or extra cables. From the manufacturer: "The laser beam pointing stabilization system Aligna® compensates for all of these disturbances. The laser beam position and its angle are measured by the 4D position sensitive detector PSD 4D in four degrees of freedom (two beam positions “X” and “Y”, and two angles “alpha” and “beta”). The position of a (collimated) laser beam is characterized by these four values, like a line in space. The measured deviation signals of the laser axis with respect to the reference axis are processed continuously by the Aligna® electronics. Herein control signals for four piezo actuators of the BeamScan mirrors and/or motorized mirror mounts (Aligna60, e.g.) are generated. Two 2D movable mirrors, which control these four degrees of freedom in four fast closed lock loops keep the laser beam exactly at the reference axis. Aligna® is a modular system, consisting of different elements, which can be adapted to the individual application: Different types of scanners (with various values of displacement, beam diameters, mirror types, movement speeds) and different types of PSDs (Position Sensitive Detectors) with various types of sensors (wavelength, beam diameter, resolution, dimensions, QUAD detectors, duo/tetra lateral PSDs, or CCD CMOS cameras) are available. Aligna® also can be controlled by a PC or by other electronic devices within a control system. In this case both the 2D beam position and the 2D beam direction can be set by the control system; a very precise stabilized 2D or 4D fast scanning of the laser beam is possible. Via the USB or serial interface, the following parameters can be set and controlled: -Switching each servo channel on or off -Control of the set points (position X, Y, and angle alpha, beta) -Gain of the PSD amplifiers (sensor sensitivity)"
