primary mirror 中文意思是什麼
primary mirror
解釋
主鏡-
The primary mirror is 80 cm in diameter, a respectable size even for an observatory on the ground.
主鏡的直徑為80厘米，這一口徑即使在地面天文臺也是很可觀的。 -
Step 3 : center your primary mirror ' s sweet spot in the eyepiece ' s field of view
把主鏡的甜點調整到目鏡視場中。 -
The research result indicated : for the strip primary mirror discussed in this article, the hexagon light - weighted cell has the best structural rigidity quality, the square cell is a little worse, the triangle cell is the worst ; there is an optimum on primary mirror thickness ; on condition of 1g gravity load combining with 4 centigrade uniform temperature rising, the thinner and higher of the flexible support reed, the better of the primary mirror surface figure. the decision of the structural parameters of the flexible support reed must take static rigidity, dynamic rigidity, static strength and dynamic strength of primary mirror assembly into account
研究結果表明：對于本文的長圓形主鏡，採用正六邊形輕量化孔，鏡體結構剛性品質最好，正方形次之，正三角形最差；主鏡鏡體厚度存在最佳值；主鏡組件在1g重力、均勻溫升4共同作用的工況下，主鏡柔性支撐簧片厚度越小、高度越高，主鏡綜合面形誤差（ p - v值）越小，但同時主鏡組件的剛體位移增大、固有頻率下降，因此柔性支承結構參數的確定要綜合考慮主鏡的綜合面形誤差和主鏡組件靜態剛度、動態剛度、靜態強度和動態強度等因素。 -
In this paper, the target radiate characteristics and waveband selection of the infrared system reviewed briefly ; the suppression of the stray radiation in the infrared sub - system is discussed ; the material selection, the support structure and optimization of the primary mirror in the infrared sub - system of the theodolite, every factor which will affect the surface figure of the mirror is discussed in detail and get the result that in the circumstance of shooting range, the primary factor which affects the surface figure of the mirror in the infrared sub - system is temperature changing, this ca n be resolved by using material of low expansion coefficient and using same material in the mirror and the mirror seat
本文將對紅外系統的目標輻射特徵分析和波段選擇進行簡要回顧，討論紅外系統中雜散輻射的抑制，並詳盡分析經緯儀紅外光學系統設計中所涉及到的反射鏡的材料、支撐、結構和優化設計等問題，認真討論和分析影響主鏡的面形精度的各種可能因素。並指出：在靶場環境下影響經緯儀紅外分系統主鏡面形精度的主要原因是溫度的變化，這種情況可通過選擇低線膨脹系數的材料並且使鏡座和反射鏡採用相同的材料予以解決。 -
The unfocused aspherical surface system is one of the main structure of large emiting system. in the system, the more large the relative aperture of primary mirror, the more small the focal length and the tube of system, and the more light the weigth
這個系統中的主反射鏡的相對孔徑越大，其焦距就越短，相應地系統筒長就越短，重量就越輕，這樣就越能滿足車載或機載系統的實戰要求。 -
This paper is a part of the project : research of manufacturing technology for unfocused aspherical surface system of large relative aperture, sponsored by national high technology 863 - 802. the purpose of this paper is deeply research the testing methods of primary and second mirror for unfocused aspherical surface, and to present the testing methods of primary mirror of the large relative aperture and transmission and reflected second mirror. the beam path diagrams and the relative design results are given in this paper
本文是國家高技術項目863 - 802的子課題「大相對孔徑無焦非球面系統製造技術研究」的一部分，其目的是對大相對孔徑無焦非球面系統的主鏡和次鏡檢驗方法進行深入研究，提出大相對孔徑主鏡和透射式及反射式次鏡檢驗方法，並給出檢驗方案和相關的設計結果。 -
It is also an important consideration in the structural design of the primary mirror assembly whether the primary mirror assembly can withstand the effect of dynamic load from the ground transport and the space launch process
計算表明，在發射過載條件下，主鏡組件不會失穩。主鏡組件能否經受住地面運輸和空間發射階段動力環境的考驗，是主鏡組件設計校核的一個重要方面。 -
At the same time, this paper pointed that the topological optimization method can be used in the lightweight design of the back contour of the primary mirror
同時本文還提出，可用拓撲優化的方法進行主反射鏡鏡背的輕量化設計。 -
The primary mirror. this is the paraboloidal mirror at the bottom of the tube. it has an aluminized surface that reflects starlight to form an image at the focal plane
主鏡。是位於鏡筒底部的一塊拋物面鏡。表面鍍鋁膜，將星光反射到焦平面上成像。 -
The dynamic analysis indicates that the design of the primary mirror assembly is good. the design of the primary mirror assembly meets requirements
主鏡組件有限元模型動力學分析表明，本文設計的主鏡組件足以抵抗動力學環境載荷的影響。 -
That is, by the calculation of the anti - thermal deformation quality factor and synthetic quality factor of some typical primary mirror materials, the primary mirror material is selected scientifically and rationally. by the finite element method and the conception of structure rigidity quality factor, researching the relation between the light - weighted cell shape, the mirror thickness and mirror structural rigidity quality. by the force - thermal coupling analysis of the primary mirror assembly, the relations between the thickness, height of the flexible support reed and primary mirror synthesis surface figure error ( p - v ) have been researched
即，通過對常用主鏡材料的抗熱變形品質因數和綜合品質因數的定量分析，科學地完成了主鏡的選材；應用有限元分析方法，藉助于結構剛性品質因數的概念，研究了主鏡輕量化孔的形狀和主鏡厚度對鏡結構剛性品質的影響；通過對主鏡組件的力熱耦合分析，研究了主鏡柔性支撐簧片厚度與高度對主鏡面形的影響。 -
The mathematic model of the ultra - thin spherical mirror is to be treated as elastic thin shell. then the predigested model, i. e., bended beam, used in qualitative analysis was proposed, and its deflection and stress formulas under the freely supported condition were set up. based on an off - axis aspherical primary mirror, the relationship of aspherical surface error ( rms ) in tangential plane with bended beam ’ s radius r, position s of concentrated load p and geometry length l of arc was analyzed
根據這一設想，本文建立了超薄鏡的數學模型?薄殼，並提出了強制力作用下超薄鏡的簡化模型?曲梁，推導了曲梁在簡支情況下受力變形的撓度公式，並結合一個實例，計算出曲梁變形后與所需非球面的面形殘差（ rms ）在子午方向與曲梁弧長l 、曲梁半徑r及集中力位置s的關系及滿足面形精度的r和s范圍，分析了弧矢方向的rms ，得出了同時滿足子午和弧矢方向面形要求的l 、 r和p 。 -
Around design requirements of the primary mirror, the article mainly introduces the process of the primary mirror material selection and some structure parameter ' s decision
圍繞主鏡的設計約束條件，本文主要介紹了主鏡材料的選擇和幾個典型結構參數的確定。 -
For the flexible support reed is very thin ( 1. 3mm ), it ' s necessary to study the buckle of the primary mirror assembly. the calculation indicates that when space camera is launched, the primary mirror assembly would work well
為了滿足主鏡的設計約束條件，主鏡柔性支撐簧片厚度設計的較薄（ 1 . 3mm ） ，因此有必要對主鏡組件的結構穩定性進行校核。 -
To minimize harmful diffraction effects, the secondary, or diagonal, mirror is generally only large enough to let the central portion of the focal plane receive light from the whole primary mirror
為減小不利的衍射效應，副鏡，或平面鏡的大小隻是剛夠把主鏡在焦平面的像反射就行了。 -
Because the strip mirror ' s dimension is large in this article, the design is more difficult. naturally, the primary mirror design is becoming a key task of space camera development
本文研究的主鏡尺寸較大且外形呈長圓形，若要保證其高的面形精度、位置精度，難度更有所增加。 -
Manufacturing of large aspherical primary mirror is one of the key technologies for optics
大口徑非球面主鏡的加工是光學製造里的關鍵技術之一。 -
It used to apply only to reflecting telescopes in which the primary mirror was a paraboloid, and thus capable of forming an image all by itself
它過去只用在拋物面反射望遠鏡上，這種鏡子只用主反射鏡就能成像。 -
Before long, astronomers found that the images sent back by hubble were blurred due to a mistake in the grinding of the primary mirror
可是不久，天文學家即發現哈勃拍攝出來的影像模糊。原來哈勃的主鏡片在磨製時出現誤差。 -
Each primary mirror will focus its photons onto a separate, 1. 1 - meter secondary reflector, a thin membrane attached to 672 actuators
每一面主鏡都會將光聚焦在另一面直徑1 . 1公尺的次要反射鏡上，反射鏡是接有672個調節器的一片薄膜。
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