The refractive powers of the first and second surfaces are +47.898 D and −5.952 D.
So, radii of curvature are +47.8981,−5.9521 or 0.02087 m, 0.168 m respectively.
focalpoints. f=D−n1,f′=Dn3.n1= air ,n3= aqueous humour =1.337Ra : radius of 1st focal pant =0.02087 mRp= radics of 2nd =0.168 mmD= Total power d=565μm. n2= lens =1.376. D=Ran2−n1+Rpn3−n2+n2(RaRp)(n2−n1)(n3−n2)d.⇒D=−0.25 [By putting all values]f1=−0.25−1=4,f2=−0.251.337=−5.348. Princple point h1=−Rpn2f1(n2−1)d=−0.092;h2=Ran2−f2(n2−1)d=0.047.
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