8.1 TRANSVERSE ABERRATION POLYNOMIALS
In a lens design or ray tracing program, the transverse aberrations are more easily obtained and analyzed than the wavefront aberrations. Ray tracing is performed with most lens evaluation or ray tracing programs. The ray paths from a point object in the object plane and for several heights along the y axis are traced toward the entrance pupil. The final intersections with the image plane (or a plane or curved surface close to paraxial image plane, if desired) are calculated.
These ray intersections in the x and y directions are represented by TAx and TAy. The typical reference origin for these ray intersections is the point where the principal ray with the ...
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