A model is proposed for spherical aberration in a single radial gradient-rod lens. The aberration on a near one-quarter pitch lens is evaluated by employing the model, and the refractive-index coefficients up to sixth order estimated by ray trace analysis.
© 1984 Optical Society of America
Toyokazu Sakamoto, "Model for spherical aberration in a single radial gradient-rod lens," Appl. Opt. 23, 1707-1710 (1984)