Fundamentals of Optical Aberrations for Lens Design

In the field of optical engineering, understanding how light deviates from its ideal path is crucial for creating sharp, high-performance imaging systems. This text-based course introduces you to the essential concepts of optical aberrations, giving you the analytical tools to identify and minimize image defects. You will start by mastering foundational terminology, learning how to trace principal and marginal rays through optical pupils, and exploring the physics of light propagation. By working through clear explanations and structured calculations, you will gain a deep understanding of how aberrations arise and how to correct them systematically in modern lens design. What you'll learn: - Trace principal and marginal rays through optical pupils mathematically - Analyze the primary Seidel monochromatic aberrations including spherical, coma, and astigmatism - Calculate longitudinal and transverse chromatic aberrations caused by material dispersion - Utilize modern wave aberration theories and wavefront error metrics - Design basic optical combinations that minimize image distortion and blur - Apply modern optimization strategies used in computer-aided lens design workflows This course begins with core definitions of optical surfaces and ray tracing parameters before moving into the mathematics of third-order aberration theory and practical correction techniques. It is designed for engineering students, physics enthusiasts, and beginning optical designers who want to build a strong theoretical foundation. No prior experience in lens design is required, though a basic understanding of algebra and geometric optics is helpful. Start reading to master the physics of optical imaging quality.