Lens and images =]Vz= <
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens c.ow4~>
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens or/gx 3
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms G0E5Y;YIN$
images by bending the incoming light as it passes. Image formation can be understood by vADiW~^Q^
treating the incoming light as rays and using a simple geometric arguments. Like much of basic S6TNu+2w4
physics, this approach isn’t completely correct but is a good approximation. Because of the : ?>7Z6
geometric nature of the approximation, one can analyze a lens with geometry. This sort of [_,as
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the ^"WV E["
system with ray tracings and with equations.
