Optical Design Assignment 1
- Plot the index of refraction of the glass N-SK15
over the range 0.40-0.70 µm using the Sellmeier equation.
- Specify a 50-mm focal length thin lens using the glass N-SK15 and
the λd wavelength. Plot the focal shift (from
nominal 50-mm value) on the x-axis for wavelengths from 0.4-0.7 µm
on the y-axis. Determine the difference in focal length between
λF and λC.
- Using the lens description in Smith, p. 131, do the following:
- draw the lens
- find its system matrix (from front to rear surface)
- find the effective focal length (1/power) from the system
matrix
- Using the same lens, find the following:
- back focal distance
- location of principal planes
- the hiatus (distance bewteen principal planes)
- vertex length (from first to last surface)
- object/image distances for m = -1/6
- edge thickness of the three lens elements in the triplet
- Using the same lens, produce a drawing of the lens with
the location of the principal planes superimposed.
Maintained by John Loomis,
last updated 25 May 2011