[1] J P M Pragana, R F V Sampaio, I M F Bragança, et al. Hybrid metal additive manufacturing: A state-of-the-art review. Advances in Industrial and Manufacturing Engineering, 2, 100032(2021).
[2] Y Chen, X Peng, L B Kong, et al. Defect inspection technologies for additive manufacturing. International Journal of Extreme Manufacturing, 3, 022002(2021).
[3] R Mercado, A Rojas. Additive manufacturing methods: techniques, materials, and closed-loop control applications. The International Journal of Advanced Manufacturing Technology, 109, 17-31(2020).
[4] C P Ma, Y C Guan, W Zhou. Laser polishing of additive manufactured Ti alloys. Optics and Lasers in Engineering, 93, 171-177(2017).
[5] S W Ganapathy, W S Schmult. Analysis and design considerations for a real-time system for non-destructive evaluation in the nuclear industry. Ultrasonics, 20, 249-256(1982).
[6] Fernez A G, Grottker S, Emmelmann C, et al. Insitu quality assurance of surface roughness using an onaxis photodiode [C]Fraunhofer Direct Digital Manufacturing Conference, DDMC, 2020: 032059.
[7] Venkata K N, Sebastian A A, Jakob S N, et al. Considerations f interpreting insitu photodiode sens data in pulsed mode laser powder bed fusion [C]Proceedings of the Joint Special Interest Group Meeting between Euspen ASPE Advancing Precision in Additive Manufacturing, 2019.
[8] M Bisht, N Ray, F Verbist, et al. Correlation of selective laser melting-melt pool events with the tensile properties of Ti-6Al-4V ELI processed by laser powder bed fusion. Additive Manufacturing, 22, 302-306(2018).
[9] M M Pavlov, I S Doubenskaia. Pyrometric analysis of thermal processes in SLM technology. Physics Procedia, 5, 523-531(2010).
[10] J Schwerdtfeger, R F Singer, C Körner. In situ flaw detection by IR-imaging during electron beam melting. Journal of Rapid Prototype, 18, 259-263(2012).
[11] S Shrestha, K Chou. Single track scan ing experiment in laser powder bed fusion process. Procedia Manufacturing, 26, 857-864(2018).
[12] Zur J J, Kleszczynski S, Schneider D, et al. Highresolution imaging f inspection of laser beam melting systems [C]IEEE International Instrumentation Measurement Technology Conference, 2013: 707712.
[13] G Marco, L Vittorio, S Quirico, et al. In-process monitoring of selective laser melting: Spatial detection of defects via image data analysis. Journal of Manufacturing Science and Engineering, 139, 051001(2017).
[14] C Millon, A Vanhoye, A F Obaton, et al. Development of laser ultrasonics inspection for online monitoring of additive manufacturing. Welding in the World, 62, 653-661(2018).
[15] Qiangguo Zhou, Zhiming Huang, Wei Zhou. Research progress and application of polarization imaging technology. Infrared Technology, 43, 817-828(2021).
[16] Liu Zheng. Research of the target detection technology based on visible light polarization imaging[D]. Beijing: University of Chinese Academy of Sciences, 2016. (in Chinese)
[17] Hongtao Ma, Xiaohui Zhang, Bing Han. Design of telescope system with a wide spectrum, large field and small distortion. Infrared and Laser Engineering, 42, 1755-1757(2013).
[18] D Cheng, Y T Wang, L Yu, et al. Optical design and evaluation of a 4 mm cost-effective ultra-high-definition arthroscope. Biomedical Optics Express, 5, 8(2014).
[19] Jing Guifen. Design of optical system f moniting based on optical fiber[D]. Changchun: Changchun University of Science Technology, 2019. (in Chinese)
[20] G W Forbes. Shape specification for axially symmetric optical surfaces. Optics Express, 15, 5218-5226(2007).
[21] Y Tian, W Yang, J Wang. Image fusion using a multi-level image decomposition and fusion method. Applied Optics, 60, 7466-7479(2021).
[22] X Peng, L B Kong. Design of a real-time fiber-optic infrared imaging system with wide-angle and large depth of field. Chinese Optics Letters, 20, 011201(2022).
[23] Jianfa Chen, Zhifeng Pan, Helong Wang. Design of infrared optical lens with large field of view. Infrared and Laser Engineering, 49, 20190443(2020).
[24] Xiangdong Zhou, Jian Bai. Small distortion panoramic annular lens design with Q-Type aspheres. Acta Optica Sinica, 35, 0722003(2015).