Lens and images b1eK(F
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens V@ LN
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have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens Dl>* L
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms T-hU+(+hg
images by bending the incoming light as it passes. Image formation can be understood by Wk0>1 rlu
treating the incoming light as rays and using a simple geometric arguments. Like much of basic 9"[!EKW
physics, this approach isn’t completely correct but is a good approximation. Because of the rs d2v9
geometric nature of the approximation, one can analyze a lens with geometry. This sort of FGV}5L
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the E~r s11
system with ray tracings and with equations.
