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DU Kaikai 杜凯凯 CEO, Moldnano (Hangzhou) Technology Co., Ltd CEO，慕德微纳（杭州）科技有限公司 |
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讲师简介 / Speaker Bio Dr. DU Kaikai is from Moldnano (Hangzhou) Technology Co., Ltd. Dr. Du is focused on the design and fabrication of micro-nano optical devices. He is the co-founder and CEO of Moldnano, which is the first company in China to provide with AR waveguide hard masters. He has developed NIL masters with slanted grating, blazed grating and gradual depth gratings for AR waveguide, accelerating the progress of AR market. His interested areas also contain meta-optics, DOE and Fresnel lenses, helping with the miniaturization and performance of optical devices and equipment. 摘要 / Abstract AR is the next generation of mobile computing platform because of its ability to combine virtual images with the real world. AR is last wearable products and the best carrier of AI computing. It attracts great interests from both academic community and industrial community. There are many optical solutions for AR devices including Birdbath, freeform lens, reflective waveguide and diffractive waveguide. Diffractive waveguide is the potential choice of consumer device considering its optical performance, productivity and light weight. However, consumer devices demand extreme weight and thickness and rainbow effect is unacceptable. By applying semi-insulated type SiC as the substrate of AR waveguide, the grating period can be selected under 300nm, decreasing the rainbow effect. By using the high refractive index of SiC, a low refractive index protecting layer can be adopted on the waveguide, resulting in the ultra thin and light waveguide. The Fresnel prescription lenses are adopted for the vision correction to decrease the thickness and cost. Besides, the SiC waveguide with designed film layers can help with heat dissipation to reduce the risk of overheat crash of light engine. |
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