Lens and images u*;53 43
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens G`!;RX
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens XeBSHvO_
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms N_!Zn"J
images by bending the incoming light as it passes. Image formation can be understood by `~t$k7wm=
treating the incoming light as rays and using a simple geometric arguments. Like much of basic Dc> )j s|"
physics, this approach isn’t completely correct but is a good approximation. Because of the I(WND/ &
geometric nature of the approximation, one can analyze a lens with geometry. This sort of YpZ 9h@,
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the qpc2;3*7
system with ray tracings and with equations.
