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一、概述一台小视场小相对孔径的望远仪器,在近轴焦距的焦面位置上装上分划板以便读数和量测是可以的,但对大视场大相对孔径的航摄照相系统来说,对人眼作用和底片作用“最好的象面位置”决不是轴上焦点确定的理想象面。以前,光学设计师们在光学计算上确立了一个光能量集中的最小弥散圆位置,将这个位置称为最佳象面。这个最佳象面位置往往是从球差或波球差的概念出发确定的,没有考虑到其他象差和宽光束象差的影响。所以,我们要确定
First, an overview of a small field of small relative aperture of the telephoto instrument, focal point near the focal length of the location of the reticle fitted for readings and measurements is possible, but the large field of view of the relative aperture of the aerial photographic system , The “best image plane position” on the human eye and the negatives is by no means the ideal focal plane for the on-axis focus. In the past, optics designers opti- mized a minimum circle of confusion of light energies, calling this location the best image plane. This best pixel position is often determined from the concept of spherical aberration or spherical aberration, without considering the effects of other aberrations and wide-beam aberrations. So, we have to make sure