Who? Discovered Coddington's Equations?
In these formulae, s and t represent the distances from the point of incidence of the traced ray to the sagittal and tangential object or image, measured along the traced principal ray, and r is the radius of curvature of the refracting surface. Angles I and I' are the angles of incidence and refraction of the principal ray while n and n' are the refractive indices of the object and image spaces.
Log in or Become a member to view the full text of this article.
This article may be available for purchase via the search at www.osapublishing.org.
OSA Members get the full text of Optics & Photonics News, plus a variety of other member benefits.