

Lens Bending - Is it really a good thing???
Right! So I have mentioned lens bending and its effect on aberrations. Is this what I was talking about? Well, no. Obviously not. Lens...


Cardinal Rays and Planes of a Lens
Late in January we began by considering the limitations of lens systems - namely aberrations, but only in a very general way. However,...


What???!!! No Perfect Lenses???
Yeah! Really! All real lenses possess aberrations – unavoidable behavior of the lens that results in the failure to create an absolutely...


Crowbar Optics - Optics for Non-Optical People
So, you are a seriously technical person, but have more questions than answers when it comes to light, optics, and illumination. You’ve...