Fundamentals of geometrical optics

Diopters planes, parallel plates

They are characterised by 1/R = 0. The formulas become :

A dioptric plane is perfectly stigmatic for any object point to infinity.

    Figure 19
Figure 19 [zoom...]

The parallel plate is composed of two distant dioptric planes of e, n is the medium index. An object point A has, as an image, a point A' situated on the perpendicular led from A to the plates sides.

We show that :

This is true for any point A in space, real or virtual. For a given object this displacement is independent from the plate positionning.

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