Question

cardinal point of thick lenses and think lenses focal point​

Answer 1

Answer:

The cardinal points consist of three pairs of points located on the optical axis of a rotationally symmetric, focal, optical system. ... The cardinal points of a thick lens in air. F, F' front and rear focal points, P, P' front and rear principal points, V, V' front and rear surface vertices. I hope this helps u!

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Answer 2

Answer:

The cardinal points consist of three pairs of points located on the optical axis of a rotationally symmetric, focal, optical system. These are the focal points, the principal points, and the nodal points.