摘要
导出相机制造误差与对焦误差阈限的计算式。阐述与景深共轭的焦深．以及焦深范围内各个垂轴面上的弥散斑大小关系。并得出，该范围不属于“像深”范围。还概述了由光线像差引起的曲面状焦位差与最佳对焦位置的选择。
Equations for calculationg The threshold values of errors tolerated during cameras making and focusing devlation tolerances are derived. The focal depth,which is conjugated with the field depth, is described. together with its relation with the size of diffusion specks on different vertical planes wlthIn the focusing range.whlch is concluded to be not equivalent to the field depth. The curvature of lmage during focuslng and its deviation from the vertical focusing plane is also explaned, and the choice of optimum focusing position is introduced.
出处
《影像技术》
CAS
1997年第4期49-52,共4页
Image Technology
关键词
焦位差
焦深
视分辨阈限
弥散斑影像
摄影
focused position deviation, focusing depth, visual resolution threshold diffusion speck image
