等效焦距 [光] equivalent focal length
- 由此计算等效焦距的换算比例,最终得出该数码相机所照任意一张照片的等效焦距。
Using this ratio, the equivalent optic focal length of any photo taken by this DC can be computed. - 导出透镜的等效焦距,主面、焦面位置以及高斯成象公式。
The formulas for determining the equivalent focal length, principal planes, focal planes as well as the GRIN lens law are derived. - 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。
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.