optical focusing 中文意思是什麼
optical focusing
解釋
光聚焦-
The optical near - field distribution and propagation properties of solid immersion lens system are analyzed in detail when illuminated by linearly polarized focusing gauss beam. the change of the optical intensity and beam dimension at the bottom of solid immersion lens with different refractive index and different distance are discussed. the simulated results reveal that the higher the refractive index is, the stronger the optical intensity and the smaller the beam dimension at the bottom of the solid immersion lens will be
編制了對固體浸沒透鏡近場超高密度光存儲系統進行模擬的二維時域有限差分程序，實現了對固體浸沒透鏡光存儲系統的數值模擬；著重研究了線偏振的高斯光束通過固體浸沒透鏡的光傳輸和近場光場分佈特性；分析了固體浸沒透鏡底面出射光強、光斑直徑隨固體浸沒透鏡折射率的變化、光透過固體浸沒透鏡后的強度、光斑直徑隨離開固體浸沒透鏡底面距離的變化。 -
Optical waveguides and micro - mirrors were successfully induced inside fused silica glass and k9 glass, respectively, by focusing femto - second pulse laser. the change of refractive index was determined to be 0. 001 to 0. 008 in the fused silica glass and 0. 006 in the k9 glass
用聚焦的飛秒激光成功地在石英玻璃中寫入了條型光波導，並首次在k9玻璃中寫入了微反射鏡。 -
In this thesis, the work on automatic alignment system is as follows : firstly, after the methods and optical systems for alignment whose are used commonly now are discussed, a new die leveling method based on auto - focus is presented for the flip chip bonder. auto - focus is completed by estimating from images ; die leveling is completed by focusing for several feature locations
本文針對倒裝貼片機的自動對準系統開展了以下幾方面的工作:首先在討論了現有的對準方法和自動貼片機的對準光路系統基礎上，針對貼片機實際應用環境，提出基於多點自動對焦的晶元調平方法。 -
A sil flying head is designed to keep the distance between sil and recording medium in near - field range. a sil optical data storage system is built up when the recording head is combined with sil flying head. meanwhile, using astigmatic focusing error detection technology and twin optical pick - up heads, a novel nontouching nanometer measurement method is developed to measure the flying height of sil, and provides us with a powerful tool to optimize the design of sil fly head
在sil存儲技術研究方面，首先提出一種光學玻璃熱熔加工製作sil的新方法，該方法克服了小半徑球透鏡加工的難題，成功製作出了半球固體浸沒透鏡；設計了sil飛行頭系統，並利用光學頭像散法聚焦誤差檢測原理，設計出一種雙光學頭sil飛行高度測量方案，實現了sil飛行頭飛行高度的測量。 -
The focusing properties of gaussian beams through a compound optical system are discussed. based on the matrix optical method, formulae of the beam width at the focal plane and imaging distance of focused gaussian beams through the system are derived
討論高斯光束經復合光學系統的聚焦特性，利用矩陣光學方法，推導出了高斯光束經復合光學系統聚焦后束腰寬度和像距的計算公式。 -
The historical review is given about the research on the induced focusing of optical beams in self - defocusing nonlinear media
在此基礎上對三維自散焦介質中由交叉相位調制效應誘導的光束聚焦進行系統研究。 -
In chapter 2, the basic theory on the simultaneous propagation of two optical beam in nonlinear media is given briefly, and a couple of parameters for describing the focusing of a beam are introduced as well
全文共六章，各章內容如下：第一章，介紹了自散焦介質中的光束誘導聚焦現象及其研究進展。第二章，簡述了雙光束傳輸的基本理論，並且引進了描述光束聚焦過程的幾個參量。 -
Firstly, optical trigonometry measurement principle and wok principle of linear ccd are introduced, which are based on to design optical focusing and imagery system with he - ne laser instrument as illuminant. secondly, peripheral circuit of linear ccd is designed in theory and experiment. finally non - contact thickness measurement instrument is constructed, using ccd as photoelectric transformation element and microprocessor as the controller
本文首先介紹了光學三角法測量原理，並對線陣ccd的工作原理進行了研究，以此為基礎採用氦氖激光器為光源，設計了光學聚焦及成像系統，對線陣ccd外圍電路的設計進行了理論設計和實驗研究，最後設計了以ccd為光電轉換元件，以微處理器為控制核心的非接觸式厚度測量儀及其系統。 -
Chapter 2 : using a so - called variance matrix, we studied the propagation and the focusing characteristics of the paraxial light beams. the quantities characterizing the gross features for a paraxial optical beam, such as the beam width, the divergence, the curvature radius of the wavefront, the complex beam parameter q. and the beam quality factor, are related by using variance matrix
第二章：闡述了常數折射率介質中光束的傳輸和聚焦，建立了表徵傍軸光束總的特徵的量，如：束寬、衍射發散角、波前曲率半徑、復光束參數q與變換矩陣的關系，得到了光束質量因子和變換矩陣行列式的定量關系。 -
In this thesis, focusing on high precision pointing and tracking system in optical intersatellite communication, vibration suppression and performance improving used advanced control algorithms are researched, and then the simulation results are given
本文基於星間光通信高精度指向跟蹤系統，研究了星間光通信衛星平臺振動抑制方法和利用先進控制演算法對系統的性能進行改善，並對所設計的內容進行了模擬驗證。 -
Self - focusing and self - defocusing have their origin in the intensity dependence of the refractive index of the nonlinear medium. the picture becomes more complicated when two copropagating optical beams affect each other through nonlinear cross - phase modulation
當兩光束共同在非線性介質中傳輸時，兩光束由於交叉相位調制效應將會相互作用，其物理機制變的比較復雜。 -
The ray equation and the self - focusing character of light signal in the optical fibre
光纖中信號的射線方程及其自聚焦性質 -
Recently focusing of optical beams and pulse beams by cross - phase modulation has been considered both theoretically and experimentally
近年通過交叉相位調制效應使光束和脈沖光束壓縮的研究較多。
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