Hardly an exciting read, but this is a useful reference:
https://iopscience.iop.org/book/978-0-7 ... -1242-4ch1
Free to read, and free to download
... it’s Chapter 1 of the book ‘Physics of Digital Photography’
MichaelG.
Fundamental Optical Formulæ
Fundamental Optical Formulæ
Too many 'projects'