M
- magnifying glass
- material science – optical properties
- metamerism
- Michelson–Morley experiment
- micro-optics
- microphotonics
- microscope
- Mie scattering
- mirage
- mirror
- modelocking
- modern optics
- monochromator
- monocular
- multilayer optics
Read more about this topic: Index Of Optics Articles