Optical Aberrations
Visualize defocusing, coma, spherical aberration, and astigmatism with mirror correction techniques
Spherical Aberration
50%
Description
Rays passing through different zones of a spherical optical surface focus at different points along the optical axis. Marginal rays focus closer to the mirror than paraxial rays, causing blur.
Correction Methods
- • Use parabolic mirrors instead of spherical
- • Stop down aperture to limit marginal rays
- • Schmidt corrector plates