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Chapter 9:
Zoom Lenses
Abstract
In this chapter we will consider some general aspects of zoom lens design. In particular we will see why several different types of zoom lenses exist, and discuss the techniques for designing them. In all zoom lenses there are at least two moving groups of lenses to satisfy the following two conditions: a. The image size must change - €”either the focal length or the magnification varies; b. The image must stay in focus.
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CHAPTER 9
19 PAGES


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