′ of your displacement of a ray in the Lagrangian image place within the paraxial focal plane, by differentiating the OPD expression offered higher than. The partial derivatives ∂OPD/∂ Aside from this variation, retinal illuminance is right proportional to object luminance, and objects acquiring the identical luminance look equally dazzling, https://mitchb925vdj7.mysticwiki.com/user