Optical System Design
2020 Course Description
Please note: The course descriptions and instructors listed below are NOT final, it is possible that circumstances beyond our control could necessitate alterations.
Optical System Design
June 15, Monday
First Order Layout and Optical Systems, Professor Julie Bentley (Rochester)
This short course begins with a review of fundamental first-order geometrical optical concepts such as optical path, Snell's law, focal length, magnification, cardinal points, pupils, and paraxial ray tracing. The first-order concepts are then applied to the design and thin-lens layout of a wide variety of optical systems/instruments ranging from the eye to magnifiers, telescopes, microscopes, camera objectives, eyepieces, relay lenses, and illumination systems.
June 16, Tuesday
Image Quality Evaluation and Aberration Theory, Professor Julie Bentley (Rochester)
Common image quality metrics (e.g. spot diagrams, transverse ray plots, RMS wavefront, Strehl ratio and MTF) and their uses in optical design will be presented. Then aberration theory is discussed starting with single surface contributions and then thin lens theory. First order chromatic aberrations, 3rd order aberrations (spherical aberration, coma, astigmatism, Petzval, and distortion), and higher order aberrations are covered using the approach of how to first identify them and then how to correct them during the optical design process.
June 17, Wednesday
Optimization and Improving a Design, Professor Julie Bentley (Rochester)
Topics covered include variable definition, local vs global optimization, merit function setup, and optimization algorithms. Optimization tips and standard methods for improving a design (e.g. stop shift, color correction, and splitting and compounding elements) are given.
June 18, Thursday
Laboratory - Introduction to Optical Design Software, Professor Julie Bentley (Rochester)
Attendees will move to a computer laboratory where they will have access to optical design and analysis software (e.g. CODE V, Zemax, LightTools, and FRED) and be given problems in lens entry and image quality evaluation with instructors on hand to assist and answers questions.
June 19, Friday
Refractive and Reflective Design Forms, Professor Julie Bentley (Rochester)
A survey of both refractive and reflective design forms will be discussed along with their limiting aberrations and uses in optical systems. Refractive design forms to be covered range from simple singlets to wide angle and telephoto designs. Reflective design forms to be covered range from a two element Cassegrain to three and four mirror unobscured anastigmats.
June 22, Monday
Laboratory - Advanced Optimization Techniques, Professor Julie Bentley (Rochester)
Attendees will move to a computer laboratory where you will have access to optical design and analysis software (e.g. CODE V, Zemax, LightTools, and FRED) and be given various problems in optical system optimization with instructors on hand to assist and answers questions.
June 23, Tuesday
Stray Light Analysis (includes software demos/laboratory) Mr. Richard Pfisterer (Photon Engineering)
Stray light mechanisms, bidirectional scatter distribution function (BSDF), total integrated scatter (TIS), Lambertian scatter, scatter from optical surfaces, scatter from paints, scatter from particulates, rough surfaces, a rational approach to stray light analysis, stray light metrics (PST, percent stray light, contrast/veiling glare, ghost image formation, unintended diffraction orders, thermal self-emission, infield stray light, diffraction), well-baffled systems.
June 24, Wednesday
Illumination Design (includes software demos/laboratory) Mr. Richard Pfisterer (Photon Engineering)
Basics of illumination design, review of radiometry and photometry, etendue, ray statistics, modeling sources, compound parabolic concentrators (CPCs), edge ray principle, lightpipes, hybrid optics, an introduction to backlit displays and projection displays, tolerancing.
June 25, Thursday
Designing with Aspheres and Zoom Lenses, Professor Julie Bentley (Rochester)
The first part of this short course will focus on how to define and specify an asphere in an optical design and the benefits of using aspheres in optical systems. Topics include: conic sections and their uses in reflective telescopes, distortion and telecentricity correction in more complex design forms, and tips for improving the optimization of aspheric designs. The second part of this short course will focus on zoom lenses. Topics include: variators and compensators, first order analysis and setup of a zoom lens, aberration control in zoom lenses, and a historical look at the origin of zoom lenses.
June 26, Friday
Tolerancing (includes software demos/laboratory), Professor Julie Bentley (Rochester)
A review of the tolerance process from assigning initial tolerance values, generating error budgets, performing a sensitivity analysis, selecting appropriate compensators, probability distributions, and Monte Carlo analyses.