Thick Lens

Thick lens element can be parameterized with length L and index of refraction n. Also, it has two radii of curvature R1 and R2 for its left and right surfaces.

Lens surface’s ROC can be concave or convex depending on the sign of the radius of curvature. The positive direction of the curvature is from left to right, and it corresponds to the primary beam propagation direction in the schema.

Full element

../_images/ElemThickLens.png

Left half-pass

../_images/ElemThickLens_left.png

Right half-pass

../_images/ElemThickLens_right.png

Note

Note that a sign convention applied here contradicts the standard sign convention for optical surfaces. This is for historical reasons and will be changed to match standards. Compare that the Lensmaker tool already uses the conventional approach.

See also

Elements Matrices, ../catalog, ../elem_props