image focal length的意思|示意

Starting from the ray path equation, object-image relationships are found and used to determine the equivalent focal length and the principal planes of tapered GRIN fiber.

本文从光线轨迹方程出发，推导了锥形梯度折射率纤维的物像关系式，并得出了它的等效焦距和主平面位置。

Then, image surface position was kept steady during a zooming process by controlling the spherical aberration of front fixed group and the focal length of back fixed group.

之后，通过合理控制前固定组球差及后固定组焦距，使变焦过程中的像面保持稳定。

If the objective lens is closer to the compact disk than the focal length of the object lens, then the cylindrical lens creates an elliptical image on the photodetector array.

如果物镜与光盘之间的距离短于物镜的焦距，柱面透镜就会使在光电探测器阵列上的成像变成椭圆影像。

Depending on the lens' focal length, the image will deform and affect how the image looks in photos.

根据镜头焦距的不同，图像会随之变形并且会影响最终的照片效果。

The reason for this is that as we know, longer focal length lenses magnify the image, but they also magnify the camera shake.

正如我们前面所学，更长的镜头焦距虽然放大了图像，但同样增加了镜头抖动。

Since this means that the focal length of the lens can also be reduced by about half, it is possible to minimize the degree of correction required for image sensor shake.

这就意味着镜头的焦距可以因此缩短一半，也可以将图像传感器震动矫正减至最低。