A Strehl Ratio (SR) decomposition for diffraction limited optics is proposed leading to a criterion of SR ≥ 97% for perfect—production optics.
© 1997 Optical Society of America
R. Blendowske and W. Vollrath, "Strehl Ratio Split for Production—Limited Optics," Appl. Opt. 36, 9105-9106 (1997)