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1)  aperture diaphragm
孔径光阑
1.
Based on diffraction integral formula and selfreproducing principle,diffraction integral equation for transverse modes in a circular symmetric resonator with an aperture diaphragm was disintegrated to finitesum matrix equation,and field distributions of transverse modes in the resonator were calculated by solving matrix for eigenvalues and eigenvectors.
结果证明,孔径光阑的位置和尺寸直接影响激光输出模式和花样。
2)  aperture [英]['æpətʃə(r)]  [美]['æpɚtʃɚ]
孔径光阑
1.
According to the basic relation E =φ/A, a direct optical method for aperture area measurement was provided, based on known constant irradiance over the aperture.
根据辐射照度与面积的基本关系,采用平行等间隔的相同激光束相互重叠,形成空间均匀的照度区域,且覆盖孔径光阑
3)  diaphragm aperture
光阑孔径
4)  Stop,aperture.
孔径光阑,孔阑
5)  aperture and stops
孔径与光阑
6)  iris aperture
可变光阑孔径
补充资料:孔径光阑
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性质:在摄谱仪的光学系统中限制光束立体角(截面积)成像的元件。如照明系统中的遮光板,它可防止光源电极头所发射出来的红热的白炽光进入狭缝。这种元件也包括狭缝,透镜的框边等部件。

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