Lens and images 7 SZR#L
qZh~Ay6I
Introduction: Along with mirrors, lens complete the set of simple optical elements. Lens _H s vF[\[
have been used for hundreds of years. Galileo constructed the first telescope from a pair of lens w.f [)
in 1609 and used it to discover, among other things, several of Jupiter’s moons. A lens forms R. N*G]K 5
images by bending the incoming light as it passes. Image formation can be understood by @H h"Y1B
treating the incoming light as rays and using a simple geometric arguments. Like much of basic In&vh9Lw
physics, this approach isn’t completely correct but is a good approximation. Because of the /`> P |J
geometric nature of the approximation, one can analyze a lens with geometry. This sort of }b`*%141
approach is called ray tracing. In today’s lab, we will form images with lens and analyze the 8H?AL
RG
system with ray tracings and with equations.
