Optical lenses design and experimental investigations of a dynamic focusing unit for a CO2 laser scanning system
文献类型：会议论文
| 作者 | Wei Chen; Yue Xu; Huaxin Zhang; Peng Liu; Guohua Jiao |
| 出版日期 | 2016 |
| 会议名称 | SPIE-Optics+Photonics 2016 |
| 会议地点 | San Diego，美国 |
| 英文摘要 | Laser scanners are critical components in material processing systems, such as welding, cutting, and drilling. To achieve high-accuracy processing, the laser spot size should be small and uniform in the entire objective flat field. However, traditional static focusing method using F-theta objective lens is limited by the narrow flat field. To overcome these limitations, a dynamic focusing unit consisting of two lenses is presented in this paper. The dual-lens system has a movable plano-concave lens and a fixed convex lens. As the location of the movable optical elements is changed, the focal length is shifted to keep a small focus spot in a broad flat processing filed. The optical parameters of the two elements are theoretical analyzed. The spot size is calculated to obtain the relationship between the moving length of first lens and the shift focus length of the system. Also, the Zemax model of the optical system is built up to verify the theoretical design and optimize the optical parameter. The proposed lenses are manufactured and a test system is built up to investigate their performances. The experimental results show the spot size is smaller than 450um in all the 500*500mm~2 filed with CO2 laser. Compared with the other dynamic focusing units, this design has fewer lenses and no focusing spot in the optical path. In addition, the focal length minimal changes with the shit of incident laser beam. |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/10059]  |
| 专题 | 深圳先进技术研究院_集成所 |
| 作者单位 | 2016 |
| 推荐引用方式 GB/T 7714 | Wei Chen,Yue Xu,Huaxin Zhang,et al. Optical lenses design and experimental investigations of a dynamic focusing unit for a CO2 laser scanning system[C]. 见:SPIE-Optics+Photonics 2016. San Diego，美国. |
入库方式： OAI收割
来源：深圳先进技术研究院
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