| 释义 |
Fres·nel lens 英frəˈnel美frəˈnɛlAHDfrə-nĕlʹ 短语¹³¹⁶²⁰⁺³
基本英英例句
菲涅耳透镜
Noun:
lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal lengthAnalyois ofFresnel lenstransmissivity and research of design;.引用该论文 陈杰;李湘宁;叶宏伟.
Imaging characteristic ofFresnel lensfor 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 plasticFresnel 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 acrylicFresnel 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 acrylicFresnel 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。
Based on the theory of scalar diffraction and on the Fourier optics, a formula of the diffractive efficiency with alignment error for the 4 stepFresnel lensis 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； |