Lens and images i4 1~-?Bc
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Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens KC6Cg?y^
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens hO=L|BJ?I
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms G#n 4g :K
images by bending the incoming light as it passes. Image formation can be understood by VVas>/0qr
treating the incoming light as rays and using a simple geometric arguments. Like much of basic SO$Af!S:bB
physics, this approach isn’t completely correct but is a good approximation. Because of the U)/.wa>
geometric nature of the approximation, one can analyze a lens with geometry. This sort of :R Iz6Tz
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the 6O7s^d&K
system with ray tracings and with equations.
