车载抬头显示光学系统塑料元件反射膜的研制

为了提高抬头显示系统中投影镜和反射镜的耐环境性和光学性能,以聚碳酸酯(PC)作为基底,采用电子束蒸发技术,使用过渡层和连接层技术以及渐增式离子源工艺,解决了薄膜与基底的附着力问题;利用真空退火,改善了环境测试过程中薄膜的膜裂现象;通过调节最外层SiO₂的离子源工艺,改善了水煮测试过程中薄膜因水汽渗透而导致的反射率下降的问题。制备了耐环境性能强的平均反射率大于95%的金属-介质结构的高反射膜。实际样品满足抬头显示系统的要求,并通过了多项环境测试。     

WDM用微镜片分光膜的镀制

主要介绍了光纤波分复用（WDM）中用的分光膜的批量镀制工艺。在大量实验基础上，对比不同膜系及膜料的选择，重点介绍了工艺流程中的镀制、监控、检测等主要环节。制备的微镜片性能稳定，已经完全达到用户的需求。     

LED背景光源反射棱镜的设计

全站仪反射棱镜在暗环境中测量会影响照准精度,为了实现全站仪反射棱镜能够在暗环境中正常使用,对全站仪反射棱镜进行了改进．在反射棱镜中引入LED发光二极管作为背景光源的装置,并通过实验验证了这种装置的可行性．首先,介绍了反射棱镜的结构构造以及工作原理;然后说明了LED发光二极管的优势及改进装置电路的设计;最后,通过实验验证了这种改进装置应用的可行性,实验选择从温度、距离两方面检验该装置对测量工作是否产生影响．2次不同室温温度测试结果证明了该装置产生的温度不会对测量产生影响;距离测试结果证明该装置不会对距离测量产生影响．由以上实验结论证明了这种改进装置的可行性．     

塑料镀膜用涂料的制作

塑料镀膜用涂料的制作与金属材料相比，塑料价格低廉，易加工，因而被大量用作装饰材料，但是塑料表面光泽低，花色品种少，配色难，用作装饰材料又受到一定的限制。应用真空镀膜技术在塑料底材上镀膜，可大大提高塑料的表面光泽，而且又易于喷涂各色涂料，配色方便，装饰...     

基于Zigbee的全站仪反射棱镜遥控装置研究

针对全站仪检定过程中,移动棱镜不方便的问题,研制出一种基于Zigbee的遥控反射棱镜装置。装置通过Zigbee实现无线传输,选取ATMEGA16作为控制芯片,通过按键以及无线传输将指令发送给接收端,接收端通过ATMEGA16芯片控制步进电动机的转动,从而实现对各个棱镜的控制。     

全站仪反射棱镜遥控指挥系统的研制

针对全站仪检定过程中人工移动反射棱镜的费时低效问题,研制了一种全站仪反射棱镜遥控指挥系统。文章首先介绍了遥控装置工作原理与组成,然后详细介绍了反射棱镜机械部分设计和基于Zigee协议的遥控反射接收模块软硬件设计,最后给出了实验结果。     

光盘光学头整形棱镜光学系统的设计

针对激光光盘系统的特点，重点讨论在单块整形棱镜优化设计中的光学问题。     

镀制汽车灯具的工艺探讨

镀制汽车灯具的工艺探讨杨洪森（核工业西南物理研究院车灯厂）ＳｔｕｃｄｏｎｔｈｅＰｒｏｃｅｓｓＧｏａｔｉｎｇＭｏｔｏｒＬｉｇｈｔｅｒｓ￥ＹａｎｇＨｏｎｇｓｅｎ（ＭｏｔｏｒＬｉｇｈｔｅｒＦａｃｔｏｒｙ，ＮｕｃｌｅａｒＩｎｄｕｓｔｒｙｓｏｕｔｈｗｅｓｔｅｒ...     

角锥棱镜不同方位反射光束的能量分布

推导了入射光束和角锥棱镜处于不同方位时，反射光束的能量计算公式，计算结果表明，当角锥棱，当角锥棱镜处于正常工作状态时，光束垂直弦面入射时的反射光束能量最大，而最小反射光能量趋近于零。     

Determining thin film parameters by prism coupling technique

A new method for determining the absorption coefficients, refractive indices, and thicknesses of thin films is proposed. The method is based on the measurement of the angular dependence of the energy reflection coefficient of a light beam upon excitation of the waveguide or leaky modes by a prism coupler. The features of determination of the parameters of SiO_x films on silicon and glass substrates are considered.     

All graphene-based thin film transistors on flexible plastic substrates

High-performance, flexible all graphene-based thin film transistor (TFT) was fabricated on plastic substrates using a graphene active layer, graphene oxide (GO) dielectrics, and graphene electrodes. The GO dielectrics exhibit a dielectric constant (3.1 at 77 K), low leakage current (17 mA/cm(2)), breakdown bias (1.5 × 10(6) V/cm), and good mechanical flexibility. Graphene-based TFTs showed a hole and electron mobility of 300 and 250 cm(2)/(V·s), respectively, at a drain bias of -0.1 V. Moreover, graphene TFTs on the plastic substrates exhibited remarkably good mechanical flexibility and optical transmittance. This method explores a significant step for the application of graphene toward flexible and stretchable electronics.     

Nonlinear totally reflecting prism coupler: thermomechanic effects and intensity-dependent refractive index of thin films

Starting with an accurate linear electromagnetic theory of a totally reflecting prism coupled to a dielectric waveguide, we implement a numerical technique to take into account optogeometric perturbations in stratified media. We calculate both the reflected fields in intensity on the prism base (near field) and in infinity (far field) for an incident Gaussian beam. The study of the variations of the intensity in the reflected beam (near and far fields) versus light power shows thermoinduced dilation of the prism and an intensity-dependent refractive index of thin films composed of tantalium pentoxyde and titanium dioxide.     

中国塑料薄膜覆盖农业

全面论述了塑料薄膜覆盖农业的研究与应用。地膜覆盖对我国传统覆盖技术产生重大突破，近20年以来，由于地膜覆盖的应用使我国农业产生了许多重大变革：扩大了适种区，调整了作物布局，提高了复种指数，促进了干旱、半干旱和盐碱地区的农业发展。地膜覆盖的增产机理是：提高土壤温度，保蓄土壤水分，稳定土壤环境，提高光、热利用效率和促进作物根系发育。提出了塑料薄膜覆盖的问题与展望。     

Ion-based methods for optical thin film deposition

The optical properties of the dielectric oxide films SiO₂, Al₂O₃, TiO₂, ZrO₂, CeO₂ and Ta₂O₅ produced by ion-based techniques have been reviewed. The influence of ion bombardment during deposition is discussed in some detail and the various production techniques are described. Recent results on the deposition and properties of diamond-like carbon films are also reviewed. Finally, some examples of the practical applications of high quality dielectric oxide films are given.     

Studies on thin film materials on acrylics for optical applications

Deposition of durable thin film coatings by vacuum evaporation on acrylic substrates for optical applications is a challenging job. Films crack upon deposition due to internal stresses and leads to performance degradation. In this investigation, we report the preparation and characterization of single and multi-layer films of TiO₂, CeO₂, Substance2 (E Merck, Germany), Al₂O₃, SiO₂ and MgF₂ by electron beam evaporation on both glass and PMMA substrates. Optical micrographs taken on single layer films deposited on PMMA substrates did not reveal any cracks. Cracks in films were observed on PMMA substrates when the substrate temperature exceeded 80°C. Antireflection coatings of 3 and 4 layers have been deposited and characterized. Antireflection coatings made on PMMA substrate using Substance2 (H2) and SiO₂ combination showed very fine cracks when observed under microscope. Optical performance of the coatings has been explained with the help of optical micrographs.     

超薄地膜企业标准合理性的探讨

超薄地膜因其没有国家或行业标准,企业依据企业标准生产。很多企业标准中的指标或方法不合理,超薄地膜的质量也差强人意。本文通过对24份搜集到的不同地区不同企业的企业标准进行对比、统计与分析,找出其性能指标和检验方法的合理性的部分,从而引导企业制定科学的企业标准,促进超薄地膜产品质量的提高。     

Surface acoustic wave reflection from diamond-like carbon thin film reflecting arrays on LiNbO3 substrates

Surface acoustic wave (SAW) reflection from diamond-like carbon (DLC) strip reflecting arrays on Y-Z LiNbO₃ is investigated. The reflection from DLC strips with triangular cross section has been observed. Reflection increases in alternating DLC and Al strips in 90° reflecting arrays in comparison with pure Al structures. The values of reflection coefficient per period in the slanted reflecting arrays are estimated to be about 1.0% for pure DLC strips (height to wavelength ratio equal to 0.02), 2% for uniform Al coating on DLC reflecting arrays, and 3.5% for alternating DLC and Al strips. This value is higher than that for pure Al strips by about 0.7%. Reflection properties are briefly discussed, and preparation technique is presented     

HMDSO plasma polymerization and thin film optical properties

Thin films were deposited from hexamethyldisiloxane (HMDSO) in a glow discharge supplied with radiofrequency (rf) power. Actino-metric optical emission spectroscopy was used to follow trends in the plasma concentrations of the species SiH (414.2 nm), CH (431.4 nm), CO (520.0 nm), and H (656.3 nm) as a function of the applied rf power (range 5 to 35 W). Transmission infrared spectroscopy (IRS) was employed to characterize the molecular structure of the polymer, showing the presence of Si-H, Si-O-Si, Si-O-C and C-H groups. The deposition rate, determined by optical interferometry, ranged from 60 to 130 nm/min. Optical properties were determined from transmission ultra violet-visible spectroscopy (UVS) data. The absorption coefficient , the refractive index n, and the optical gap E₀₄ of the polymer films were calculated as a function of the applied power. The refractive index at a photon energy of 1 eV varied from 1.45 to 1.55, depending on the rf power used for the deposition. The absorption coefficient showed an absorption edge similar to other non-crystalline materials, amorphous hydrogenated carbon, and semiconductors. For our samples, we define as an optical gap, the photon energy E₀₄ corresponding to the energy at an absorption of 10⁴ cm⁻¹. The values of E₀₄ decreased from 5.3 to 4.6 as the rf power was increased from 5 to 35 W.