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Unformatted text preview: Lecture 10 8. Geometric Optics Newtonian form focal point focal point y o y i s o f x o f x i s i Imagery • Real image : The rays intersect in a real space. You can put a piece of paper there • Virtual image : The rays diverge. But if we look into the rays it appears as if they would come from a certain point: the virtual image point • Real Object : Rays start at a real point in space and propagate straight until they hit the optical system • Virtual object : Rays appear as if they would have come from a certain point. (important for lens combinations) Focal points n l >n m n l <n m Sign Conventions Images 8. 3. Thin lenses Sign conventions Types Lens equation • Combination of two spherical interfaces • We deal with it one after the other (1) (2) Sign convention Add the two Thin lens equation (Lensmaker formula) • Neglect d We can now calculate the necessary quantities and determine the image MagniFcation: M T " y i y o = # s i s o Demo 8.4. Grin lenses • Instead of curved interfaces also...
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This note was uploaded on 08/06/2008 for the course PHYS 352 taught by Professor Dierolf during the Fall '04 term at Lehigh University .
 Fall '04
 DIEROLF

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