A new fifth-order algebraic ray-tracing formula valid in any radial gradient is proposed. This leads to algebraic fifth-order aberration formulas for gradient-index (GRIN) rods or Wood lenses. Such formulas can be used for profiling GRIN rod lens samples.
© 1985 Optical Society of America
Erich W. Marchand, "Fifth-order analysis of GRIN lenses," Appl. Opt. 24, 4371-4374 (1985)