Lens and images |q
Pu*vR
JG{`tTu
Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens 2FR 5RG
oD
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens ~ F>'+9?Sn
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms 2j$~lI
images by bending the incoming light as it passes. Image formation can be understood by 2h1P!4W85
treating the incoming light as rays and using a simple geometric arguments. Like much of basic J#\oc@
physics, this approach isn’t completely correct but is a good approximation. Because of the [ic%ZoZ_
geometric nature of the approximation, one can analyze a lens with geometry. This sort of 8I0G%hD
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the u"DE?
system with ray tracings and with equations.
