Chapter 7: Thick Lenses and Lens Systems

Question 1

Optical Power in a thick lens

Answer 1

P = (n-1)/R1 + (1-n)/R2 - (d/n)(P1P2) = P1 + P2 - (d/n)(P1P2)

Question 2

Lens Power has a(n) ________ with the thickness of the lens (d)

Answer 2

Inverse

As the thickness of the lens increases, the power decreases, and vice versa.

Question 3

d= n(1/P1 + 1/P2) is the

Answer 3

critical thickness of a lens

Question 4

The optical power in a thick lens depends on the ____ between the surrounding medium and the material

Answer 4

difference of refractive indices

Question 5

The optical power of a real lens depends on:

Answer 5

the radii of curvature R, the lens material refractive index in relation to the surrounding medium refractive index and the surface separation.

Question 6

A special lens includes the ____ which comprises of refracting surfaces with same radii of curvature but with slightly displaced centers of curvature.

Answer 6

Hoegh Meniscus

Question 7

The optical power of each refracting surface in a Hoegh Meniscus is ________

Answer 7

equal in size with opposite sign

Question 8

A _____ is where the lens has the same centers of curvature but different radii of curvature.
The optical power may be positive, zero, negative

Answer 8

Size lens

Question 9

The Cornea is an example of a

Answer 9

Meniscus Lens (with a strong plus lens) (with different radii of curvature surrounded by optical media with diff values of n)