Changchun Institute of Optics and Fine Mechanics (the Changchun Institute of Optics) was founded in 1952, is China's optics, precision mechanics, electronics, integrated research and development bases. Changchun Institute of Digital Technology Co., Ltd.-ray machine is part of Changchun Institute of Optics of professional research, design and manufacturing, mass production of linear displacement transducer and grating grating angular displacement sensor family of high-tech entities. Product direction: lines, angular displacement sensor and precision and extended use of this technology related to precision measuring instruments. Existing linear displacement sensor grating, grating angular displacement sensor, resistive wire displacement sensors, optical coordinate measuring instrument, suc.. (more>>)