The basic factors affecting collimating characteristic are off-axis magnitude, effective aperture and emission position on the focalplaneof off-axis parabolic mirror.
影响离轴抛物镜准直特性的主要因素有离轴量,有效孔径和焦面出射点的位置。
2
The positionof the image and the amplitude variation in the optical field are associated with the focus and the distance from the object to the front focalplane of the lens system.
象的空间位置和光场振幅的变化与透镜系统的焦距以及物体距焦平面的位置有关。
3
A new technique for measuring the accurate positionof the focalplaneof an optical system with position sensitive detector (PSD) is presented.