concave-sphere 中文意思是什麼
concave-sphere
解釋
球鏡-
The diameter of a sphere is four times the focal length of a concave mirror cut from it
凹面鏡如果是從圓球上切下來的，圓球的直徑會是凹面鏡焦距的四倍。 -
The prototype is made by a concave sphere primary and a plane secondary deposited the mo / si multilayer on the fused quartz substrates. the reflectivity peak and the reflectivity uniformity of the multilayer mirrors are respectively 25 % and around + 2. 5 % at 17. 1nm
望遠鏡主鏡為球面，次鏡為平面，所用反射鏡為在熔石英基底上鍍制mo si多層膜的euv波段反射鏡，在17 . 1nm的反射率25 ，反射率的均勻性2 . 5 。 -
To my knowledge, no such concave mirrors made by reversing a glass sphere survive in museum collections, and no contemporary documentary evidence indicates that anyone made concave mirrors by reversing blown glass spheres
據我所知，目前博物館里，沒有任何利用玻璃球內面製造的凹面鏡，也沒有任何那個時代的文件證據指出，有人製造過利用玻璃球內面做成的凹面鏡。 -
Point diffraction interferometer - a physical idea, is invented by smartt and strong in 1972, advanced by smartt and steel, and used to test astronomical telescope, it has simple structure and has not special demand to source. recently. with the development of fiber ' s manufacture and coupling technology. the simple modern fiber ' s center is smaller than before, this make it possible to progress fiber point diffraction interferometer ( pdi ), in addition to test convergent wavefront, it can test the reflective concave. the excellence of pdi is that it does not need standard mirror. in intereference testing, the standard mirror is the main reason which limit the improvement of precision, pdi can avoid difficulty to provide the wide future for high precision testing. pdi, which produce the standard sphere wavefront, is an instrument which realize the phase shifting with piezoelectric transducer ( pzt ), and collect the interferogram with ccd, in this paper, a adjusting methord is described, then data processing is obtained
點衍射干涉儀這一物理思想，早在1972年smartt和strong就已發明，由smartt和steel做了進一步發展，並成功的用於檢測天文望遠鏡，它結構簡單，對光源沒有特殊要求，近年來，由於光纖製造工藝以及耦合技術的發展，單模光纖纖芯不斷縮小，為光纖點衍射干涉儀得以發展提供了前提條件，該干涉儀由激光照明，除了檢測會聚波前外，還可以用來檢測反射凹球面，進而應用到單個面形的檢測；另外，光纖點衍射干涉儀最大的優點是不需要標準鏡，在干涉檢測中，標準鏡是檢測精度受限的很大原因，光纖點衍射干涉儀能繞開這一難度，為進行高精度的光學檢測提供了廣闊的前景。 -
The interferometric zone plate is the essential of hoes, which is the interference between plane wave and sphere wave, can focus the light beam by diffraction, instead of the way which conventional lens or concave mirrors do
摘要干涉式波帶板系由平面波和球面波兩道光波干涉而成，為研究全像光學元件的基礎，其可經由繞射作用達到聚焦效果，猶如使用傳統凸透鏡或凹面鏡所產生的效果。 -
It is able to enter concave shape area and has larger sphere of action
而且， gvfsnake改進了一般變形模型無法進入凹形區域，作用范圍小的弊病。
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