Lens and images o|APsQE
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens _ZE&W
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens s;#,c(
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms K?Jo"oy7
images by bending the incoming light as it passes. Image formation can be understood by A$n:
treating the incoming light as rays and using a simple geometric arguments. Like much of basic 0py29>"t
physics, this approach isn’t completely correct but is a good approximation. Because of the j/F:j5O*
geometric nature of the approximation, one can analyze a lens with geometry. This sort of HHL7z,%f
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the *-&+;|mM
system with ray tracings and with equations.
