Optics Formulas
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6 Terms
1
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What is the curvature (R) formula?
1/r
2
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How to find the power of a front surface of a Lens?
n-1/r1
3
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How to find the power of a back lens surface?
1-n/r2
4
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How to find the spherical equivalent?
SE= sphere + cyl/2
5
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How do you find the adjusted sphere when cutting cyl?
original sph + (cyl cut/2)
6
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How to find the oblique power in a sphere-cyl lens?
Pø=Psph + Pcyl (sin^2 a)
Note 
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