Explaining Microscope Functionality using Funsci's Lens Layout | Need Help

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The discussion focuses on the functionality of a microscope built using a lens layout from Funsci. The user is confused about the orientation of plano-convex lenses in the objective and eyepiece, particularly the Ramsden configuration in the eyepiece. It is explained that using the Ramsden configuration helps minimize optical aberrations by ensuring that both surfaces of the lenses contribute to light convergence. This symmetrical design leads to better overall image quality. Understanding these principles is crucial for effectively explaining the microscope's operation.
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I have made a micrscope for a class, and now i have to explain how it works. I followed the lens layout from this website http://www.funsci.com/fun3_en/ucomp1/ucomp1.htm, and I don't understand why I have the plano-convex lenses oriented the way they are. Basically in the objective I have two plano-conves lenses stacked with the plane sides facing the light source of the microscope, and I have two plano-convex lenses in the eyepiece with the curved sides facing each other (the Ramsden configuration). I just don't understand why I would need to use the Ramsden configuration in the eyepiece. Don't both sides of a plano-convex lens cause light to converge?? Thanks!
 
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It has to do with aberration correction- when both surfaces contribute optical power, the total aberration is generally less than if one surface was 'doing all the work'. The Ramsden eyepiece is symmetrical, and so the aberrations are minimized.

Spiffy project, btw!
 
Sweet...thanks for the info
 
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