Lens and images y*AB=d^
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens i;yr=S,a0/
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens gA&+<SK(
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms T9N&Nh7 3
images by bending the incoming light as it passes. Image formation can be understood by .\W6XRw
treating the incoming light as rays and using a simple geometric arguments. Like much of basic ~I+}u]J
physics, this approach isn’t completely correct but is a good approximation. Because of the 9 aE .jpN
geometric nature of the approximation, one can analyze a lens with geometry. This sort of t]j4PNzn
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the f a9n6uT
system with ray tracings and with equations.
