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- Fleet Fresnel Lens Optical Practice 飞机弗雷斯内尔透镜光学系统引导着舰实习
- Fresnel Lens Optical Practice 费雷斯内尔透镜光学系统引导着陆实习
- Field Fresnel Lens Optical Platform 野战弗雷斯内尔透镜光学平台
- Fresnel Lens Optical Landing System 费雷斯内尔透镜光学着陆系统
- Portable Fresnel Lens Optical Landing System 轻便型菲涅耳透镜光学着陆系统
- Laterally Compounded Fresnel Lens Optical Landing System 横向复合屈折反光透镜光学着陆系统
- Analyois of Fresnel lens transmissivity and research of design[J]. 引用该论文 陈杰;李湘宁;叶宏伟.
- A kind of diffraction element modulating phase information by LC space light modulator to get a zoom fresnel lens, as well as the using of said element to optical imaging system, is introduced. 本文介绍一种以液晶空间光调制器作为调制位相信息的衍射元件,获得可变焦长的菲涅耳透镜,以及该元件在光学成像系统中的应用。
- Imaging characteristic of Fresnel lens for parallel incident rays is analyzed by ray tracing and experiments. 利用光线追迹与实验的方法,对菲涅耳透镜在平行光照明时的成像特性进行了分析。
- HD100-B1 LED lantern is composed of plastic Fresnel lens,super-bright LEDs,flasher,sunswitch and alloy aluminum case. B1 LED航标灯由塑料菲涅耳透镜、超高亮LED、闪光器、日光开关和铸铝合金外壳组成。
- HD160-B1 LED Lantern is composed of acrylic Fresnel lens, super-high-intensity LED, flasher, sunswitch and cast alloy aluminum case. HD160-B1 LED 航标灯由丙烯酸塑料菲涅耳透镜、超高亮LED、闪光器、日光开关和铸铝合金外壳组成。
- HD160-B1 LED Lantern is composed of acrylic Fresnel lens ,super-high-intensity LED ,flasher,sunswitch and cast alloy aluminum case. B1 LED航标灯由丙烯酸塑料菲涅耳透镜、超高亮LED、闪光器,日光开关和铸铝合金外壳组成。
- In the erosive gas environment, combined with host computer, decoding the host signal and controlling the pan with lens optic, zoom, focus and other auxiliary function. 用于接触腐蚀性气体的场合,与主机配套使用的一种远程前端设备,对主机信号进行译码,可控制云台的运行和控制摄像镜头光圈、变焦、聚焦及辅助功能控制等操作。
- Based on the theory of scalar diffraction and on the Fourier optics, a formula of the diffractive efficiency with alignment error for the 4 step Fresnel lens is obtained. 摘要基于标量衍射理论,在傅立叶光学的基础上,首先得出存在对准误差情况下4台阶菲涅耳透镜衍射效率的解析式;
- IOL opacification may be divided into three patterns, i.e. deposition on the external optical surface, within the lens optic and both of them simultaneously. 多种材料的人工晶状体均可发生混浊,混浊类型主要有表面型、内部型和混合型3种。
- The light efficiency and irradiance uniformity of Fresnel lens sheet and semi-circular diffuser sheet which composed of diffuser and prism function are also discussed here. 并结合扩散板与稜镜片功能,设计一菲涅尔透镜与半圆灯罩式扩散片,取代传统扩散板,讨论其光使用效率与光均匀性。
- The lensometers is also called measural lens dioptre instrument,to measure spherical lens dioptre,cylindric lens dioptre and axis,prism dioptre,and lens optical center etc. 顶焦度计又称对光机、查片机,可用来测量球光镜镜度、散光镜镜度、棱镜镜度以及散光轴线和光学中心点等,是眼镜片冷加工中必不可少的检测仪器。
- In the explosive and hazardous environment, combined with host computer, decoding the host signal and controlling the pan with lens optic, zoom, focus and other auxiliary function. 用于作业环境有爆炸性危险的场合,与主机配套使用的一种远程前端设备,对主机信号进行译码,可控制云台的运行和控制摄像镜头光圈、变焦、聚焦及辅助功能控制等操作。
- A refracting panel consisting of one or more, usually cylindrical, fresnel lenses. 由一个或多个圆柱形菲涅尔透镜组成的折射系统。
- This should be of concern to those busy optical practices in Asia where some practitioners judge the suitability of a lens solely based on the `comfort'levels and without fitting assessment. 结论: 亚洲之外设计的镜片,如根据个体差异进行适当选择再作验配,对于华人来说是比较适合的。
