大变倍比中波红外变焦系统的小型化设计

基于中波红外320240制冷型探测器,采用机械正组补偿方式,引入衍射光学元件（DOE）,并采用折叠光路,实现大变倍比中波红外变焦光学系统的小型化设计。利用变焦原理和Zemax光学设计软件给出系统结构参数,并对设计结果进行像质评价,对凸轮曲线求解等。设计与分析结果表明:系统使用6片透镜在3.7 m~4.8 m波段实现了18 mm~360 mm连续变焦,满足100 %冷光阑匹配,在空间频率16 lp/mm处MTF值均大于0.5。该系统具有大变倍比、变焦轨迹平滑等特点,可应用于机载光电侦察设备中。     

碘量法测定葡萄糖含量的小量化与绿色化研究与实践

碘量法是测定葡萄糖含量的常规分析方法,也是定量分析化学实验常开设的综合性实验。对传统教材中的碘量法测定葡萄糖含量实验内容进行了小量化改造,并研究了氢氧化钠用量及滴加速度、反应温度、放置时间、酸的用量、滴定震荡速度及淀粉加入时刻等影响因素对碘量法测定葡萄糖含量的影响。实验结果表明,小量化滴定能够达到常量滴定分析要求的精密度与准确度,可大幅度降低实验消耗、节省实验经费80%以上,使学生树立绿色化学思想和环境保护意识,全面提高人才的培养质量和效益。     

新型小型化牙科扫描仪探头的光学系统设计

为解决牙科扫描探头小型化问题,基于结构光三维重建算法,创新性地设计出一种投影与成像共孔径设置的小型化牙科三维扫描仪探头光学系统。系统采用分视场共孔径技术,部分视场用于实现投影功能,另一部分视场用于实现成像功能,投影区域和成像区域存在公共区域。仿真实验给出了在扫描范围为46×35mm2内的系统性能,借助LightTools软件做了照明分析仿真,证明了系统光路的可行性。     

高功率激光装备小型化轻量化技术

自激光器问世以来,激光在各领域的需求和应用非常广泛,而随着高功率激光装备输出功率不断提高,重量与体积已成为制约高功率激光装备应用与发展的关键问题之一。由于当前高功率激光装备仍将提高输出功率作为其发展目标,加之高功率激光装备结构功能复杂、能量转换效率低等特点,制约了高功率激光装备小型化、轻量化的实现。本文在介绍高功率激光装备的特点及其小型化、轻量化技术约束的基础上,综述了装备常用小型化、轻量化技术应用、新型高功率激光技术应用、提高能量转换效率及散热效率等高功率激光装备小型化、轻量化实现途径,以及各种技术途径在高功率激光装备中已有的应用。根据高功率激光装备现状及特点,其在小型化、轻量化方面具有很大的发展空间及应用前景。     

Nanolasers Enabled by Metallic Nanoparticles: From Spasers to Random Lasers

Owing to exotic optical responses, metallic nanoparticles and nanostructures are finding broad applications in laser science, leading to numerous design variations of plasmonic nanolasers. Nowadays, two of the most intriguing plasmonic nanolasing devices are spasers and random lasers. While a spaser is based on a single metallic nanoparticle resonator with the optical feedback provided by the localized surface plasmon resonance, the operation of a random laser relies on multiple light scattering within randomly distributed metallic nanoparticles. In this paper, an up‐to‐date review on the applications of metallic nanoparticles in spasers and random lasers is provided. Principles of a random spaser, a device combining the features of a spaser and a random laser, are briefly discussed as well. The paper is focused on major theoretical and experimental approaches to control the core metrics of lasing performance, including threshold, resonant wavelength, and emission directionality. The applications of spasers and random lasers in the fields of sensing and imaging are also mentioned. Finally, the challenges and future perspectives in this area of research are discussed.     

一种小型光谱色彩分析仪的设计

为解决目前颜色测量仪器测速慢、体积大的问题，采用先进的颜色测量方法——光电摄谱法，建立了一个测色的数学模型，设计了一种全自动测色的小型光谱色彩分析仪。仪 器由照明系统、光电摄谱仪、信号采集与处理电路、测色软件四部分组成。详细阐述了照明系统和光电摄谱仪的设计。光电摄谱仪采用平场凹面光栅分光，线阵CCD接收，缩小了仪 器体积。利用此仪器测量7块标准色板，色品坐标测量不确定度小于0.01，测试周期为1秒。结果表明，此仪器不仅精度高，还满足了工业生产中对测色的速度和准确度要求。     

Compact zoom lens unit for camera phones

We present a novel approach to the miniaturization of an imaging system with high resolution and high optical magnification for camera phones. An optical zoom system with a mechanical shutter has been designed and developed, the mechanical shutter being necessary to assure high image quality. The shutter is integrated with the zooming lens group, which allows the zoom lens unit to be downsized. Performance of the zoom lens unit accommodates an image sensor of over five-mega-pixels and fulfills all the requirements of a camera phone.     

绿色简易法制备纯二氧化氮气体

设计了一种在密闭容器中制备纯二氧化氮气体的绿色简易方法。该方法实现了气体制备、收集、尾气处理的一体化，不仅可用于课堂演示实验，也为深入研究二氧化氮溶于水的定量实验奠定物质基础。另外，此方法也可用于无氧环境下其他物质的制备。     

An Ozone Generator of Miniaturization and Modularization with the Narrow Discharge Gap

The method of ionization discharge has a key action on the process of the ionization and decomposition of O₂ molecule as well as the re-decomposition of O₃ molecule. In this paper, an ozone generation of miniaturization which was fabricated by stacking discharge modules with rectangle is introduced, only volume of 23.0×53.0×42.0 cm³ for ozone production capacity of 1 kg/hr. In addition, the ozone concentration and its production efficiency are significantly improved in comparison with a conventional ozone generator, which have the highest ozone concentration of 308 g/Nm³ and the production efficiency of 118 g/kWh at ozone concentration of 200 g/Nm³.     

Engineering Design,Implementation, and Sensing Mechanisms of Wearable Bioelectronic Sensors in Clinical Settings

Wearable sensing devices have transformed the hourly analysis of events such as body signals and environmental risks into real-time monitoring in minutes or seconds. Wearable sensors have facilitated the ability to obtain useful data by monitoring the physiological parameters and activities of an aided and a healthy individual. Wearable devices employ detectable biomarkers in the human body, such as in tears, saliva, interstitial fluid, sweat, and so on. These can deliver relevant information on human health, online activity monitoring, and therapeutic treatments. This section outlines the significance of sample types and associated biomarkers as indicators in the development and manufacturing of wearable biosensors. We have emphasized the most recent advances of wearables based on skin-like and textile, giving attention to personalized health monitoring to record signals of motion and physiological and body fluid investigation. Furthermore, this review categorizes wearable biosensors based on the sensing mechanism, electrochemical, optical, and mechanical. Additionally, the recent wearables related to the detection of the newly havoc-causing pandemic, COVID-19, and the future perspective for the development of much more advanced and potent wearable biosensors have been highlighted. The final section highlights unmet difficulties and gaps in wearable sensors in personalized therapy.