Harmonized System
Section XVIII > Chapter 90 > Heading 9001 > 9001.20
Sheets and plates of polarising material
Section XVIII > Chapter 90 > Heading 9001 > 9001.30
Contact lenses
Section XVIII > Chapter 90 > Heading 9001 > 9001.40
Spectacle lenses of glass
Section XVIII > Chapter 90 > Heading 9001 > 9001.50
Spectacle lenses of other materials
Section XVIII > Chapter 90 > Heading 9002
Lenses, prisms, mirrors and other optical elements, of any material, mounted, being parts of or fittings for instruments or apparatus, other than such elements of glass not optically worked.
Section XVIII > Chapter 90 > Heading 9002 > 9002.1
Objective lenses
Section XVIII > Chapter 90 > Heading 9002 > 9002.1 > 9002.11
For cameras, projectors or photographic enlargers or reducers