Optics: Block 17 Equations

Question 1

Transmission

Answer 1

T = I - R - A

Question 2

Fresnel’s law of reflection

Answer 2

% reflected = ((n2-n1)/(n2+n1)) SQUARED x 100

Question 3

Anti reflective coatings need to follow this equation:

Refractive index of the film

Answer 3

n film = square root of n lens

Question 4

Actual thickness of ideal single anti-reflective coating

Answer 4

Thickness = wavelength / 4 x n film

Question 5

Image jump

Answer 5

P = dF

d = distance from optical center of seg in cm
F = power of the add

Question 6

Vertical imbalance

Answer 6

P=dF

d = Distacne away from the optical center in cm

F = power in vertical meridian

NEED OPTICAL CROSS FOR THESE PROBLEMS

Question 7

Seg drop

Answer 7

= (B size / 2) - seg height