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In classical optical design color aberrations are mainly presented in crude approximations, based on classical paraxial or 3rd color aberration concepts. During optimization the effect of color aberrations is mainly handled by averaging their effects. Can the effect of a bad correction in the blue channel be always compensated by a better correction in red and green channels? There are applications where a special degree of performance in each color channel counts. Or even for each single wavelength region within a certain band.
In this talk, tools in CODE V will be presented that allow control on color correction according to modern information transfer methods. The two main concepts that will be presented are “Color Separation Depth of focus” instead of “longitudinal color aberration” and “Lateral color based on PSF” instead of based on chief rays.
After the concept has been presented, the application of this concept will be shown on a practical example.
Speaker
Rainer Jetter
About the instructor: Rainer Jetter has over 35 years of experience in practical optical imaging design. After studying physics and astronomy at the Ruprecht-Karls University in Heidelberg, he joined AGFA-GEVAERT AG in Munich to become a classical lens designer and, subsequently, the head of the optical design group there. It was even then that his main fields of interest included fabrication tolerances in optical design. Together with Dr. Geoff Adams, one of the authors of the Kidger tolerancing program, he examined its applicability by comparing predictions made under that program to results turned in at AGFA’s optical shop. Thereafter, he worked part-time as a freelance optical designer for various companies such as Zeiss Oberkochen, as well as part-time as an employee at Rodenstock Präszisionoptik and Schneider-Kreuznach. During his professional life, he has designed more than 100 optical systems that have made their way to success. Part of that success was based on his reasoned view that fabrication tolerancing is a crucial stage of the optical design process. For more than ten years now, Rainer Jetter has taught special courses on tolerancing in lens design at optical companies and at the University of Applied Sciences in Munich.
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