Lens and images s_Sk0}e
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens z_HdISy0
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens UNYqft4
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms &ncvGDGi
images by bending the incoming light as it passes. Image formation can be understood by _/|\aqF.
treating the incoming light as rays and using a simple geometric arguments. Like much of basic @]j1:PN-
physics, this approach isn’t completely correct but is a good approximation. Because of the +[VXs~I
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geometric nature of the approximation, one can analyze a lens with geometry. This sort of ^W ^OfY
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the ;pAK_>
system with ray tracings and with equations.
