Tracing of skew rays

D.P. Feder
1950 Journal of research of the National Bureau of Standards  
This paper presents a set of convenient recurrence formulas for the tracing of skew rays by means of a desk calculator. Because of the increased s^peed and field coverage of modern lenses, it is frequently desirable to trace such rays in making a complete study of an optical system. The formulas apply to systems of spherical refracting surfaces. The system need not be centered. Particularly convenient check formulas are available, which need be applied only at the final surface.
doi:10.6028/jres.045.006 fatcat:cjbtnutyzbarncyabnbgctgwgy