焦闌 的英文怎麼說
中文拼音 [jiāolán]
焦闌
英文
telecentric iris [stop]焦闌系 telecentric system-
The field of view can be limited by inserting a stop in the focal plane of microscope.
可以在顯微鏡的焦平面上加裝一光闌，從而限制視區。In the experiment, we use the he - ne laser and the semiconductor laser as the source, record the bessel beam patterns behind the axicon by using a digital camera and a microscope, measure the radius of the bessel beam central spot by film - scanning and measure the effect of both the radius of the aperture and the open angle of the axicon on the maximum non - diffraction distance. the experiments show that a specific propagating range has constant power and the beam has a bessel - like distribution in this range. the results agree with the beam corresponding to a diffraction free beam
同時我們還採用膠片掃描的方法測量了無衍射光束的中心光斑尺寸，測量了不同光闌孔徑和不同稜角情況下的最大無衍射距離和傳播軸附近橫截面內微小光孔中的光強，實驗結果顯示當激光光束經過軸棱錐轉換後有一段距離功率變化很小，且分佈近似貝塞爾分佈，符合無衍射光束的特性;經過聚焦后，呈現三維分佈中空的光束bottlebeam ，實驗結果與理論分析基本吻合。And it is mainly made up of optic - mechanical system, ccd imaging system ( including ccd focal plane module, controlling time sequence and driving circuit, video processor and a / d switcher. ),
該測量系統由光機系統（包括定焦鏡頭、數字ccd相機、消雜光光闌、機械外殼組成） 、圖像處理系統和控制計算機構成。New infection of truncation parameter on focal shift and focal switch is investigated when studying laguerre - gaussian ( l - g ) beams passing through an aperture - lens separate optic system
摘要以拉蓋爾高斯（ l - g ）光束通過光闌透鏡分離的光學系統為例，研究了截斷參數對焦移量和焦開關的影響。The numerical results show that the appearance of focal switch rests not only on the distance of aperture and lens but also on truncation parameter ; focal switch possibly occurs only when truncation parameter is between its critical maximum and minimum truncation parameters
數值結果表明：焦開關的出現不僅與光闌透鏡分離量有關，還與截斷參數值密切相關；僅當截斷參數取某一上、下限之間的值時，才可能出現焦開關。分享友人