Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics Handbook
More News
SPECIAL ANNOUNCEMENT
Welcome to EDU.Photonics.com! Please take our survey and you could win $50!
Photonics Handbook

  • Gaussian and Newtonian Thin Lens Formulas

Four important equations from which the image distance and the lateral magnification can be computed for an object at any arbitrary distance from a thin lens.
Equation (1) is known as the Gaussian form of the lens equation, after the mathematician Karl F. Gauss. Equation (2), first derived by Sir Isaac Newton, is the Newtonian form of a lens equation. The Gaussian form is probably more familiar, but the Newtonian equation is algebraically simpler. Notice that in the former equation object and image distances s and s’ are measured from the center of a thin lens, while in the latter, object and image distances x and x’ are measured from the focal points F and F’.

The lateral magnification m can be expressed either in terms of s and s’, by equation (3), or in terms of x, x’ and f, by equation (4).


Figure1.gif


Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Facebook Google+ LinkedIn Facebook RSS
©2016 Photonics Media
x Please take our survey – you could win $50!