Subheading 900211: Lenses; Objective, for Cameras, Projectors or Photographic En … etc.
Subheading 900219: Lenses; Objective, (other than for Cameras, Projectors or Pho … etc.
Subheading 900220: Filters; Mounted as Parts or Fittings for Instruments or Appa … etc.
Subheading 900290: Optical Elements; N.E.C. in Heading No. 9002 (e.g. Prisms and … etc.