常見例句Analyois of Fresnel lens transmissivity and research of design[J]. 引用該論文 陳杰;李湘寧;葉宏偉.Imaging characteristic of Fresnel lens for parallel incident rays is analyzed by ray tracing and experiments. 利用光線追跡與實驗的方法，對菲涅耳透鏡在平行光照明時的成像特性進行了分析。HD100-B1 LED lantern is composed of plastic Fresnel lens,super-bright LEDs,flasher,sunswitch and alloy aluminum case. B1 LED航標燈由塑料菲涅耳透鏡、超高亮LED、閃光器、日光開關(guān)和鑄鋁合金外殼組成。HD160-B1 LED Lantern is composed of acrylic Fresnel lens, super-high-intensity LED, flasher, sunswitch and cast alloy aluminum case. HD160-B1 LED 航標燈由丙烯酸塑料菲涅耳透鏡、超高亮LED、閃光器、日光開關(guān)和鑄鋁合金外殼組成。HD160-B1 LED Lantern is composed of acrylic Fresnel lens ,super-high-intensity LED ,flasher,sunswitch and cast alloy aluminum case. B1 LED航標燈由丙烯酸塑料菲涅耳透鏡、超高亮LED、閃光器，日光開關(guān)和鑄鋁合金外殼組成。Based on the theory of scalar diffraction and on the Fourier optics, a formula of the diffractive efficiency with alignment error for the 4 step Fresnel lens is obtained. 摘要基于標量衍射理論，在傅立葉光學的基礎(chǔ)上，首先得出存在對準誤差情況下4臺階菲涅耳透鏡衍射效率的解析式； 返回 fresnel lens