長焦距 的英文怎麼說
中文拼音 [zhǎngjiāojù]
長焦距
英文
long focus-
Discussion about off - focus influence on mtf for long focus aerial camera
長焦距航天遙感相機離焦對傳遞函數的影響To reduce the marking distortion, using the vertical 2 - dimension galvanometer distributing and f field lens focalize, the distance of the second galvanometer to the machining plane is the focus f. to avoid too hign temperature to distroy the resonance cavity because of too long marking time, cooling system and self - protector is used in the design
為減少打標畸變，採用垂直二維振鏡分佈， f物鏡聚焦，將激光束經第二個振鏡反射後到加工平面的距離為焦距f ，為了避免打標時間過長，溫度過高破壞諧振腔，在設計中加上冷卻系統和自我保護裝置。The unsteadiness of air becomes prohibitive only if instruments with large focal length are used.
只有在使用長焦距的儀器時，才不允許空氣的不穩定。Correct under the guiding of route, we successfully design and have trial - produced the one kind of new long large - scale camera of focal distance
在正確路線的指引下，我們成功地設計和試制了一種新型長焦距大型照相機。The company develops the production the panoramic camera to use 120 or220 roll films, the lens focal distance scope : 28 - 300mm, the fuselageuses the pure metal numerical control processing, but preciselyestablishes the shooting angle, the entire automatic attire volume, receives the volume, and may control remotely the photography, in thephotography may the automatic compensation exposure ; the panoramicpicture enlarger and bright room panoramic picture making anenlargement machine may use in 80 cm length the panoram negative, extremely conveniently manufactures each kind of width the panoramicpicture
公司研製生產的全景照相機使用120或220膠卷，鏡頭焦距范圍: 28 - 300mm ，機身採用全金屬數控加工，可精確設定拍攝角度，全自動裝卷收卷，並可遙控拍攝，拍攝中可自動補償曝光全景照片放大機和明室全景照片擴印機可用cm長度內的全景底片，非常方便地製作各種寬度的全景照片。If the objective lens is further away from the compact disk than the focal length of the object lens, then the cylindrical lens again creates an elliptical image on the photodetector array
如果物鏡與光盤之間的距離長於物鏡的焦距，柱面透鏡也會使在光電探測器陣列上的成像變成橢圓影像。Because the air - borne imaging system is required a far acting distance and the focal length of its optical system is long. influenced by the unsteady or moving platform mounted on plane, the change between the frames of image sequence is more. problems of image fuzziness and instability tend to be striking out, which becomes a bottleneck restricting the air - borne reconnaissance, collimation, evaluating beat effect
機載光電成像系統，由於要求作用距離遠，故其光學系統焦距長，受其載體姿態變化和振動的影響，圖像序列幀間變化過大，造成觀察者覺得模糊、不穩定，己成為制約空中偵察、瞄準、打擊效果評估等功能的瓶頸。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 describes a new method to select these parameters, including to determine the focus length, relative aperture and field of view of new optical system in design by means of making reference to previous star sensors and their optical systems ; to forecast the acquiring probobility of star sensor in accordance with selected param eters ; to determine the principal design wavelength and spectral coverage by means of integrat ing the spectrum of stars
本文介紹一種確定光學系統參數的新方法，包括通過參考比較已有星敏感器及其光學系統特性來選取新光學系統焦距、相對孔徑和視場；根據所選取的參數預計星敏感器的捕獲概率；採用綜合恆星光譜方法確定光學系統中心波長和光譜范圍。Based on studying a long focus oblique real - time aerial camera, this paper studys the reason of being out of focus systematically, and points that the primary reason of being out of focus is due to the change of environment ( temperature > atmospheric pressure ) and oblique photographic distance, and according to the three factors, talk about the effect on being out of focus of camera, the simple maths equation is presented in order to calculate out of focus
基於一種長焦距斜視實時航空相機的研製，深入地探討了導致相機離焦的原因，指出環境（溫度、大氣壓力）變化和照相距離的變化是導致相機離焦的主要原因，分別從溫度、大氣壓力、照相距離這三個方面的變化對相機離焦的影響進行研究，給出了計算相機離焦量的簡化數學模型。Taking photographs of these small deep sky objects require a lens of longer focal length, sometimes a telescope is used instead
拍攝這些細小的深空天體，必須用較長焦距鏡頭，甚至要用一支望遠鏡作為鏡頭。For example, a photographer will choose a long - focal - length, or telephoto, lens to zoom in on a baseball pitcher to make his image large ; he will use a short - focal - length wide - angle, or “ fisheye, ” lens to zoom out, revealing the fans throughout the stadium
例如攝影師會選擇長焦距的鏡頭，即遠距照相鏡，來拍攝棒球投手，使投手的影像放大；他會用短焦距的廣角鏡頭，甚至所謂的魚眼鏡頭，來拍出運動場周圍看臺上的球迷。Effect of temperature on measuring system of long focal length
溫度對長焦距測量精度的影響This is a long focus lens
這是個長焦距鏡頭。Long focal lengh lenses
長焦距鏡頭Connecting the camera to the telescope with a suitable adaptor enables the telescope to become a long telephoto lens
直接焦點法將攝影機接駁在一支望遠鏡后，把望遠鏡作為一支長焦距鏡頭使用。However, during a total solar eclipse, when the sun is fully blocked by the moon, you can photograph it with a telephoto lens or even a telescope
但在日全食出現時，即太陽完全被月球遮蓋著，則可利用長焦距鏡頭或望遠鏡進行拍攝。The choice of lens depends on the size and brightness of the celestial body photographed. lenses ranging from fisheye to super telephoto can all be used
鏡頭的選擇視乎所拍攝天體的范圍大小與光暗而定，魚眼鏡頭乃至超長焦距鏡頭都可派上用場。High resolusion optical systems including refractors, catadioptric lens and reflectors used to observation from the satellites to the earth is presented and the problems in design is discussed
摘要對用於衛星對地觀測用各種高解析度長焦距光學系統，如折射系統，折反射系統和反射系統等各種形式和設計問題進行了分析和討論。The necessity and possibility to estimate and compensate camera rotation in the long focus imaging system is proposed according to characteristics of airborne imaging system. and choosing some points that have great gray levels as image characteristic to estimate motion is also given
針對機載成像的特點，提出了長焦距攝像系統檢測和補償旋轉運動的必要與可能性以及利用選擇特徵圖像中的最大灰度值點，作為圖像特徵來估計圖像序列幀間運動的方法。分享友人