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geometrical optics
spherical aberration


light spot induced by a combination of plane and spherical refracting surfaces for an object on the axis


number of surfaces
light spot induced by a combination of plane and spherical refracting surfaces for an object on the axis
Rk : radius of curvature of surface number k nk : refraction index of the medium after surface number k dk : distance from the vertex of surface number k to the vertex of surface number k+1 x : distance from the vertex of the first surface to the object point D : diameter of the aperture ( located on the first surface and not in the plane tangent to the first surface and passing through the apex ) zi : distance from the vertex of the last surface to the considered plane in the image space dy : spot diameter in the considered plane

Note
This calculation page can not detect all unrealistic inputs.



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