Hello all. I've been working a few years in industrial machinery and almost all of the new tech improvements have to do with cameras, communications, etc., so I've been very interested in self-studying optics and photonics. I took mechanical engineering in college so I dare say optics is the area of physics I have the least instruction in. Does anyone know of good introductory resources or textbooks I can check out? Help this 30 yr old boomer spread his wings!