波像差 的英文怎麼說
中文拼音 [bōxiàngchā]
波像差
英文
wave aberration-
The excimer laser diopter correction and aberration correction have been proved efficiency and safety. based on cad / cam, applied optics, ophthalmology, biomedicine and computer techonlogy, this paper studied the principle of excimer laser aberration correction. the conception, cause of formation and representation of wavefront aberration are introduced
準分子激光治療屈光不正及消除像差的有效性和安全性已被證實,本學位論文將cad 、眼科視光學、波前像差技術、生物醫學技術與計算機技術等多學科理論交叉結合,系統敘述了人眼波前像差理論,包括波前像差概念、表示方法、測量方法和產生的原因等。The visx star star 4 combines the technologies of customvue wavescan aberrometer, activetrak 3 - d active eye tracking, iris registration, variable spot scanning and variable repetition rate to provide customized wavefront treatment. in the past, standard lasik corrects refractive errors, such as myopia, hyperopia and astigmatism which are so - called low order aberrations
威視visx star 4是結合前波前像差分析儀3d眼球主動追蹤系統虹膜定位系統ir iris registration及智慧型超微光斑等技術去提供個人化激光矯視療程。在過去,標準lasik可解決近視遠視及散光等所謂低階像差問題。According to the geometry of slope measurements for the subjective wavefront optometer, a wavefont reconstruction model using zernike polynomial with normalization factor is put forward. based on householder transformation and gram - schmidt orthogonalization method, two methods for working out unknown zernike coefficients are bring forward. the error propagation parameter for the wavefront reconstruction model is deduced
深入研究了帶標準化因子的zernike多項式的性質;針對主觀式像差儀波前斜率采樣方案,提出了採用帶標準化因子的zernike多項式對眼測試波前進行重建的數學模型;提出了兩種求解方法,即基於householder變換求解法和基於gram - schmidt正交化求解法,用於確定重建模型中的未知模式系數;推導出了該波前重建模型對斜率測量誤差的傳遞系數。The wave - deviation methods are concerned, basing on the relations between the wave - deviation and spherical aberration, wave - color - deviation and color deviation. after the equation of optical system, initial structure resolved, the glass catalog having been allocated in the computer, the original solution can be worked out for the doublet and air - spaced doublet, triplet and air - spaced triplet rapidly and precisely. after a little modification by the computer, the satisfied results will be obtained
論文由波像差與球差的關系,波色差與色差的關系推導出了波差法求解光學系統初始結構的方程式,再配以玻璃庫程序,可以較快、較準確地求解出雙膠合、雙分離、三膠合、三分離物鏡的初始解,然後再進計算機稍加校正,就可以得到滿意的結果。Modern corneal laser surgery has been one of the effective methods for wavefront aberration correction in recent years
近年來準分子激光角膜技術迅速發展,人眼波前像差的矯正成為該領域研究的熱點問題。Currently the measurement and correction of aberration is a focus points in the field of ophthalmology. the examination of wave - front aberration is a main method that is used to observe optical system of the human eye
人眼波前像差測量與矯正是目前眼科領域的研究熱點之一,而波前像差測量是觀察人眼光學系統是否完備的一種比較全面的方法。Excimer laser corneal refractive surgery and wavefront technology have developed rapidly these yeas. now, wavefront - guided laser vision correction becomes the hotspot in corneal refractive surgery. applying the technology of cad / cam, this paper has studied modeling technologies in excimer laser vision correction
近年來準分子激光角膜屈光手術、眼波前像差的測量技術迅速發展,當前波前像差引導的個體化切削技術成為研究的熱點問題。The object of the paper is wavefront aberrometer produced by nanjing university of aeronautics and astronautics and su zhou 66 vision - tech co., ltd. the principle of aberrometer are detailedly introduced, image processing and automatic track techniques are also researched. according to research result, relevant control software has been developed in this paper, the conceptions of aberration are firstly described, synchronously, image processing and automatic track system are analyzed
論文以南京航空航天大學與蘇州六六視覺科技股份有限公司合作研製開發的人眼波前像差儀為研究對象,系統論述了人眼波前像差儀原理,重點對其中的關鍵技術? ?圖像處理與自動跟蹤進行了詳細研究,並開發出了相應的系統控制軟體。A model made up of pulse compression grating pair with wavefront aberration is applied to calculate the effect of the wavefront aberration on pulse compression
理論分析結果表明:脈沖壓縮光柵系統最大波像差不大於/ 4時,脈沖壓縮比的最大變化率約為2 % 。The preliminary conclusion shows that the maximum rate of compression ratio changes is about 2 % and the change rate is less when the peak - to - valley value of wavefront aberration is less than a quarter of wavelength and incident angle is properly
脈沖壓縮光柵對系統達到衍射極限時,在選擇適當的入射角度時,光柵波像差所引起的脈沖壓縮比變化並不大。Based on the relationship between the change of the cornea thickness and optical path length, the ablation profile for the correction of wavefront aberration is presented and simulated on computer. the process of scanning - spot excimer laser is studied and simulated on computer. models for calculation of residual wavefront aberration on situations of lateral decentration and torsional misalignment are brought up
使用改變光程的方法建立起波前像差與角膜切削量之間的關系,並對像差矯正模型進行計算模擬;深入研究了小光斑準分子激光飛點掃描模型,對飛點掃描過程進行計算模擬;提出了中心偏移和旋轉情況下剩餘像差計算模型,為定量研究切削中心定位精度對像差矯正的影響提供了依據。The numerical work gives out lot of results of different aberrations. the effects of the fundamental wave ' s aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed
研究結果表明位相失配和走離效應是影響諧波位相的重要因素;像差在非線性光學過程中傳遞結果不是線性疊加的,而是非線性的。A method used for designing a flat - field awg is also presented based on the mspm. in this design, the images of all the channels are on the same line. this greatly simplifies the structure of an awg and makes it much easier to integrate with other devices
在多點消像差方法的基礎上,實現了平場型awg器件的設計,使得所有通道波長的成像位置都在同一條直線上,簡化了器件的結構,有利於器件集成,使awg器件的設計更加靈活。In fact, hartmann - shack wavefront sensor is affected by the noise of ccd and the constructed error too. in our compare, a bridge is setup, which is the original wavefront composed by zernike polynomial, we transform the original wavefront into far field. then we can compare the accuracy of hartmann - shack wavefront sensor with the accuracy of the system of far field diagnosis in detecting the farfield, using diffraction limit and encircle energy
我們在進行兩者相互比較的過程中,搭建了一個比較的橋梁,即由zernike多項式組成的各種原始像差波前,將它也變換到遠場作為原始理想遠場光斑,然後,以它的衍射極限和環圍能量曲線作為評價標準,比較hartmann - shack波前傳感器和遠場測量系統在光束質量診斷中的探測精度。And we simulate the thing by different spatial frequency hartmann - shack wavefront sensor which is used in detecting the far field of laser beam, and we get the result that if magnitude of wave aberration is lower the dynamic range of sub - aperture of wavefront sensor, the more the spatial frequency of hartmann - shack wavefront sensor is, the more the accuracy of hartmann - shack wavefront sensor in detecting high frequency aberration is
並且波前像差在hartmann - shack波前傳感器子孔徑動態范圍之內,空間解析度高的hartmann - shack波前傳感器對高階像差波前探測時,其光束質量診斷精度高於空間解析度低的hartmann - shack波前傳感器的光束質量診斷精度。Testing technology for aspheric wavefront aberration
非球面波像差的檢測技術Finally, the schwarzschild objective of euvl is assembled and aligned on the common - axis illuminated structure with the wfe of 0. 0202x ( a, = 632. 8nm ) rms. using an off - axis circular subaperture of the full annular pupil, the wfe of the schwarzschild objective is 0. 0144a, ( x = 632. 8nm ) rms
最終對euvl系統中的schwarzschild微縮投影光學系統進行裝調,驗證了系統裝調的收斂性,裝調后系統的最終波像差為0 . 0144 rms ( = 632 . 8nm ) 。Wave - front aberration
波陳面像差The main contents can be listed as follows : 1. after analyzing the properties of the natural illuminating system, a region - based background and natural illumination model is set up using the histogram of image difference and rls filter. on the basis of that model, we propose an adaptive algorithm of judging and updating background image
基於戶外自然光照系統的特點,建立了基於圖像差分直方圖和遞推最小二乘濾波( recursiveleastsquarefilter ,簡稱rls濾波器)的局域化背景和光照變化模型,提出了自適應的背景判斷和更新演算法。The relation between form errors of the flat mirror under test and wave - front aberrations, i. e., influence function, can be obtained through sampling the pupil plane
摘要通過在光瞳面上取點的方法,找出被檢平面鏡面形誤差與檢驗系統波像差之間的相互關系,即影響函數。分享友人