Manufacturing a compact scanner head is necessary in the laser beam application development. As the first time proposed the scanner with deflection two laser sources beam just by one reflective element – polygon mirrors. This work will take a new look and comprehensive on polygon scanners. In terms of theoretical understanding, the 2D analysis of the scanner head needs to be addressed. This first step will give us the optical characteristics of the polygon scanner as well as give the future user a list of equations to design their own needed polygon scanner (desired scanning length, focusing length, size of polygon, number of facets. Although our main purpose in this study is to design a polygon scanner with two laser sources, we also examine the feasibility of using our polygon scanner for surface cleaning applications and optimize the scanner parameters to improve the efficiency of laser cleaning. We believe that we will design an innovative solution for ultrahigh-speed scanner.
Polygon mirror scanners are widely considered to be a vital factor in high-power laser scanners because of their rapid speed and large scanning area. However, one limitation of the polygon mirror design is that back reflection of the laser damages the laser source. This work will perform a detailed analysis of the scanner head, leading to a design that avoids back reflection. This design produces a scan area with a scanning length of up to 305 mm and a width of 6.6 mm. Moreover, the scanning speed can reach 30.5 m/s. Finally, a paint stripping experiment demonstrated the efficacy of the polygon mirror for potential use in commercial applications.
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