With the elevated speed and precision in the area of measurement, non-contact measurement is replacing traditional contact measurement in many fields due to its good accuracy, real-time and no damage. As a semiconductor device that use single charge as its sensor signal, Liner CCD can easily achieve very high accuracy under suitable drive circuit, and
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The cleanliness level on the surface of optic elements is critical to the laser system, nowadays, the methods employed to inspect the surface quality of highly precise optics are mainly conducted by eyes, whose disadvantages are that consequences are directly correlated with the inspector’s experience and the efficiency is low. Especially, when facing the situation
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Photoelectrical shaft encoder is an angle displacement photoelectrical sensor. It is a digital angle measurement device in which optics, mechanics and electricity are integrated. With photoelectrical technology, the physical measurements such as angle information,line displacement, velocity, acceleration are transformed into electronic signal. The signal is sent to computer to accomplish the dynamics measurement and real
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