lens power 中文意思是什麼

One often speaks of this succession of shapes having the same power as exemplifying lens bending.

我們常常舉出這樣一系列形狀不同，然而具有相同光焦度的透鏡，作為透鏡的配曲調整的例子。

The feasibility and some advantages of employment of sil have been discussed. the numerical aperture are calculated when laser pulse is defocusing. in contrast with traditional microscopy objective, the employment of solid immersion lens can effectively increase the numerical aperture of the recording system ; thereby it can increase the volumetric density and decrease the demand of the incident laser power

當脈沖聚焦點相對于固體浸沒透鏡底面離焦時，對系統的有效數值孔徑進行了計算，結果表明採用固體浸沒透鏡離焦的方式進行記錄，系統的有效數值孔徑最低可增大到固體浸沒透鏡插入前的折射率倍，其數值孔徑的理論極限值為存儲介質的折射率。

According to this, the phase - matching conditions, effective nonlinear coefficients, acceptances of angle and wavelength for biaxial " crystals have been discussed in detail. thermal lens effect is an important factor which affects the quality of laser beam and the amount of output power

實驗上，採用了雙軸晶體lbo作為倍頻晶體，因此對雙軸晶體相位匹配、有效非線性系數的計算、允許角、允許波長給出了較完整的分析。

Compared with current instruments, the setup can decrease disturbance of disorder radiation by using double layer refractive index sample matching vessel, and it can increase collecting and transmitting efficiency of radiation by adopting single mode fiber with gradient refractive index lens. with a low power laser, the sample has a low scathe, and the laser and the measurement system can be integrated conveniently

與現有的同類型儀器相比，該儀器採用雙層折射率樣品匹配池減少了雜散光的干擾；採用帶梯度折射率透鏡的單模光纖接收、傳輸散射光信號提高了散射光的收集傳輸效率；用低強度的激光避免了對樣品的輻射損傷，同時可以使激光器和系統集成在一起，整個系統小型實用。

Hence, the cause of destruction lies in the cause of an alliance " s beginning. only through a comprehensive lens can we get a complete explanatory picture of the rise and fall of seato and the power that pushes the institutionalization of the alliance

文章通過對東南亞條約組織的建立和失敗過程的分析和其制度化進程的分析，運用現有的制度化安全合作理論和同盟理論，試圖用一種綜合現實主義，制度主義和建構主義的角度來分析東南亞條約組織制度化的過程。

A truly versatile zoom lens with a range that extends from wide - angle to high - power telephoto

此鏡頭為真正的多功能變焦鏡頭，其變焦范圍可從廣角延伸至高效能遠攝。

Based on the generalized huygens - fresnel diffraction integral and in consideration of the effect introduced by astigmatism, the transformation properties of gaussian beams passing an astigmatic lens are studied analytically, the beam quality of astigmatic gaussian beams is analyzed in terms of the beam propagation factor ( m2 - factor ) and power in the bucket ( pib ), and illustrated with numerical examples

基於廣義惠更斯-菲涅爾衍射積分，並考慮了像散的影響，對高斯光束通過像散透鏡后的傳輸特性作了解析研究，以光束傳輸因子和桶中功率為參數分析了像散高斯光束的光束質量，並以數值計算例加以說明。

According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。

Polonium - 210 can be used to eliminate static electricity in machinery, remove dusts from photographic film and camera lens, and provide heat energy for thermoelectric power devices in space applications

釙210可消除機器所產生的靜電去掉照片底片和攝影機鏡頭上的污塵及在太空工業上為恆溫發電機提供熱能。

Resolving power test charts for projection lens

放映鏡頭解像能力測試標板

Once unleashed, the power channels through a positively charged continuous energy lens at the center of the handle

能量一旦釋放，就會通過一個連續沖入正電的能量水晶導向劍柄中心。

The errors of intraocular lens power calculation may be caused by inaccurate axial length measurement or unstable keratometric reading

摘要造成人工水晶體度數計算之誤差的主要因素為不正確眼軸長及角膜曲度之測量。

The laryngoscope lense is equipped with a 3v power supply. the switch controlled by a spring touch - point requires nothing about the assorted lens handle power supply

麻亮爽鏡體自帶3v電源，使用時採用彈簧觸點控制開關，對所配套的鏡柄電源沒有任何要求。

In this paper, some investigation and design as following. have been carried out on er - yb codoped phosphate glass waveguide laser first, three primary performance parameters of er - yb waveguide laser pump threshold power ; output power and slope efficiency have been commulated and analysed theoretically based on er ~ ( 3 + ) - yb ~ ( 3 + ) energy configuration ; rate equation of stable state and transmitting equation. the influences of er - yb ions concentration ; enabled waveguide length ; light dot radius of signal light and pump light ; reflectivity of output lens on three above parameters have been researched

首先，從er ~ （ 3 + ） - yb ~ （ 3 + ）能級結構出發，結合激光穩態速率方程與傳輸方程，對鉺鐿波導激光器的三個主要性能參數:閾值功率、輸出功率、斜率效率作了理論計算分析，並研究了鉺、鐿離子濃度、光波導激活長度、信號光與泵浦光光斑半徑比例、輸出耦合鏡反射率對這三個關鍵性能參數的影響。

If a nd : yag laser runs at high pump power, laser resonator will generate multimode beam due to thermal lens of active rod. the higher pump power is, the bigger divergence occurs and the smaller rayleigh range is

當nd ： yag激光器工作在高泵浦功率下時，由於nd ： yag激光器工作物質的熱透鏡效應導致了諧振腔輸出多模激光，隨著泵浦功率的升高激光光束發散角增大，焦深減小。

Zero - power lens

零屈光度透鏡

As mentioned above, to image the diffraction pattern it is necessary to reduce the power of the diffraction lens by altering the current through the lens coils from the value used to form an enlarged image of the first image

如上所言，要成像衍射模型就必須縮減衍射透鏡的能量，通過改變從已有形態到形成第一映像的放大映像過程中穿過透鏡圈的能量實現。

Outside the series the multi - purpose safety mask may install the belt to decide burnt or the zoom lens ccd camera, the roof panel opens the type for the spring assistance before, behind connects with the lock catch ; the base has the electric cable gland which two may adjust, facilitates installs the power source and the video frequency line

Kl - 8012系列室外多功能防護罩可安裝帶定焦或變焦鏡頭的ccd攝像機頂蓋為彈簧輔助前開式，後部用鎖扣連接底部有兩個可調節的電纜密封套，方便安裝電源和視頻線。

The influence of using different methods to measure corneal refractive powers in determining the power of intraocular lens

不同儀器測量角膜曲率計算人工晶體屈光度的可行性分析

These data were used to calculate the error of predicted postoperative refraction with srkii intraocular lens power formulas

我們採用了srk人工水晶體度數之計算公式來預估術后之屈光狀態。