摘要：This study presents a new method for designing algorithm for a triplet lens with one or two elements that are made of a gradient index medium (GRIN). This method is based upon considering a well-known designed triplet lens (Cooke triplet lens) as a target lens for designing of the Hybrid Triplet lens (HTL). Our design was based upon keeping the total optical path length for the axial ray fixed for each case of design. The results showed that several designs for the HTL have the same total powers of the target lens. These designs depend on the variation of the GRIN element parameter values and the order of the GRIN element position in the system. These HTL designs have been evaluated by considering several optical merit functions, i.e., the root mean square (RMS) spot radius, wave front error and the spherical aberration. To achieve the optimal design, these functions are compared for the target lens and the HTL designs through a wide range of field angles.

摘要：Utility of microwave bootlace lens is well established. For broadband and wide scanning network, it is required to op-timize and use features of this lens for better communication and scanning device. This report presents the design of a compact 2D bootlace lens with five focal feed for multiple beam forming. This design will help in reducing phase error and will provide power efficiency and better resolution during target tracking. This design will provide better aperture efficiency and scanning angle.

摘要：A quasi-optical dielectric lens used for W-band focal plane array passive imaging has been developed. The imaging system requires the lens to form beam spot with 3 dB width less than 35 mm at distance of 3500 mm. The powerful optical design software ZEMAX was utilized to design the contours of the lens, and numerical method based on ray tracing and Huygens’ Principle was processed to verify the design result. Measurement result shows that the 3 dB width of the beam spot formed by the lens is 34 mm at distance of 3460 mm, and the beam pattern on imaging plane are equally arranged and the intensity decreases only 0.55 dB while the object lateral deviation increases to 300 mm.

摘要：梯度变折射率透镜（Grin lens）又称自聚焦透镜，是指折射率分布沿一定方向渐变的光学透镜，光纤通信中常用的是圆柱形径向梯度变折射率透镜。它的研制成功不仅促进了变折射率光学理论的迅猛发展。而且因其具有体积小、易与光纤对接耦合、光纤通信中插入损耗小等优点，基于其制作的多种微小光学器件在远距离光纤通信、

摘要：超有逼格的外挂镜头，一方面可以提升你的手机拍照体（bi）验（ge），另—方面它也可以独立使用从而带来更多的趣味和创意玩法。

摘要：LOMOGRAPHY总是惊喜连连。这位时髦的复古专家开发了一系列产品，用于塑料的入门相机、即时成像相机、适合各种画幅的古怪胶片，还帮助经典镜头型号获得重生。

摘要：2019年4月3日至5日,由欧盟委员会(ERASMUS+高等教育能力建设项目)支持的第三届lens可持续设计国际会议在米兰(意大利)、北京(中国)、班加罗尔(印度)、开普敦(南非)、墨西哥城(墨西哥)和库里提巴(巴西)5大洲6个国家会场同时举办。可持续设计国际会议是lensin可持续设计国际学习网络项目(the International Learning Network of networks on Sustainability)的重要组成部分。lensin项目由欧盟委员会(ERASMUS+高等教育能力建设项目)支持,全球36所大学参与其中。其目标是促进新一代设计师和设计教育工作者,有能力为全方位向可持续社会转型做出贡献。

摘要：为什么选择了电容屏·人机界面友好,操作流畅,可以单点触摸、多点触摸;·节省空间,显示屏就是用户接口;·设计美观,生产工艺成熟。

摘要：Worldwide, ESSILOR International provides customers with Progressive Addition lenses (PAL), which replace bifocal lenses. Thermal replication is one process to produce glass moulds for PAL, using sagged glass on a ceramic slumping block. In this paper, thermal replication for producing PAL glass moulds is developed through 3D modelling and experimentation. Our numerical approach is validated by comparing it with experimentation on the global 3D topology of the sagged glass. It is also validated by using more severe optical comparison criteria, developed by ESSILOR International to analyze the conformity of their products. Through modelling, the thermal replication is analyzed by studying the evolving contact between the sagged glass and the ceramic slumping block during the thermal cycle and the glass flow on the upper side of the sagged glass.

摘要：AT：2015年微软发布了令人震撼的Holo lens以及被称为Holograms的技术,能具体介绍一下吗？目前,Holo lens主要应用在哪些领域？微软：我们对微软Holo lens所能实现的可能性感到非常兴奋,也很高兴看到已经有很多用户的使用案例。我们相信,开发者、商业机构、设计师、创意者和寻求全新娱乐方式的人将从微软Holo lens中发现独一无二的价值。