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Optics for Engineers
book

Optics for Engineers

by Charles A. DiMarzio
August 2011
Intermediate to advanced content levelIntermediate to advanced
564 pages
20h 45m
English
CRC Press
Content preview from Optics for Engineers
5
ABERRATIONS
In developing the paraxial imaging equations in Chapters 2 and 3 with curved mirrors, sur-
faces, and lenses, we assumed that for any reection or refraction, all angles, such as those in
Figures 2.10, 2.12, and 3.4, are small, so that for any angle, represented here by θ,
sin θ = θ = tan θ and cos θ = 1. (5.1)
As a result, we obtained the lens equation, Equation 2.51 in air or, more generally, Equa-
tion 3.47, and the equation for magnication, Equation 2.54 or 3.48. Taken together, these
equations dene the location of “the image” of any point in an object. Any ray from the point
(
x, s
)
in the object passes exactly through this image
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Publisher Resources

ISBN: 9781439807255