- Optical instruments and apparatus (5)
- Binoculars (1)
- Lenses, optical: all types except ophthalmic (4)
- Magnifying instruments, nec, optical (1)
- Microscopes, except electron, proton, and corneal (1)
- Lens coating and grinding equipment (1)
- Mirrors, optical (1)
- Optical comparators (1)
- Optical elements and assemblies, except ophthalmic (1)
- Optical test and inspection equipment (2)
