Design a 100 mm focal length thin-lens achromatic doublet with an entrance pupil diameter of 10 mm. Assume that you will use the lens with an object at infinity.
a) Find the powers of the two elements assuming that lens #1 is made from FK52 glass and lens #2 is made from KZFS1 glass.
Glass FK52 KZFS1
na 1.486052 1.613099
nE 1.490179 1.622759
nc 1.484238 1.608932
where 2a = 0.587560 μm, 2F = 0.486130 μm, 2c = 0.656270 μm
b) Find the radii of all the surfaces if the two elements are cemented where the radius of curvature of the second surface of the first lens will have the same radius of curvature as the first surface of the second lens (R2 = R3) and the radii of the 1st lens are equal and opposite (R1 = -R2).
c) Using paraxial ray trace data, check that the F and C light come to the same focus for an on-axis object point.
d) Where does the d-light come to focus? What is the difference between the d-light focus and the f-light focus position? What aberration is this? Is this smaller or larger than the BK7/SF2 doublet from the last homework?
