optical design

^{optical design - schmax}

max reason

schmax optical design
This page describes a flat-field photo-visual schmidt-cassegrain optical system invented by Max Reason.

This optical configuration has 2 aspheric surfaces, a schmidt-corrector and a hyperbolic secondary mirror. All other surfaces are spherical. The original 9" f/6 design was designed to be a compact, high-resolution telephoto lens for 6x6cm and 6x7cm SLR camera bodies. The field corrector lenses are far enough from the focal surface to clear the swing-up SLR mirrors in these cameras.

----- design specifications -----

schmax9e_data.gif (18072 bytes)

----- design layout -----

schmax9e_design.gif (15065 bytes)

----- image quality -----
spot image wavefront-interference image

schmax9e_spots.gif (13178 bytes) schmax9e_waves.jpg (39186 bytes)

----- aberrations -----

schmax9e_aberrations.gif (19851 bytes)