The Top500-Lexicon

· manufacture of optical elements mounted or not:

· unworked optical elements other than of glass

· prisms, lenses, optical mirrors, colour filters, polarizing elements, etc. of glass or other material

· spectacle lenses and contact lenses

· spectacle frames and frames fitted with lenses, whether or not the lenses are optically worked: sun-glasses, protective glasses, corrective glasses, etc.

· manufacture of optical instruments:

· optical microscopes, equipment for microphotography and microprojection, magnifying glasses, reading glasses, thread counters, etc.

· binoculars, sight telescopes, telescopic sights and observation telescopes, astronomical equipment, etc.

· lasers, excluding laser diodes, etc.

· manufacture of photographic and cinematographic equipment:

· cameras

· image projectors, enlargers and reducers

· discharge lamps ('electronic') and other flashlight apparatus

· apparatus and equipment for photographic and cinematographic laboratories, apparatus for the projection of circuit patterns on sensitized semiconductor materials, projection screens

· manufacture of photochemical products, see 24.64

· manufacture of unworked glass optical elements, see 26.15

· manufacture of optical fibre cables for coded data transmission, see 31.30

· manufacture of photographic flashbulbs, see 31.50

· manufacture of television cameras, see 32.20

· manufacture of microscopes other than optical, see 33.20

· manufacture of optical-type measuring and checking appliances and instruments, see 33.20