Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by general context]

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Object Genres
4. object genres
5. object genres by form

Narrower term/s

• photographic lenses [NP][+]
  • achromats
  • anastigmats
  • convertible lenses
  • fisheye lenses
  • fixed-focus lenses
  • long-focus lenses [+]
    • telephoto lenses
  • standard lenses
  • wide-angle lenses
  • zoom lenses
  • aplanats
  • anamorphic lenses
• apochromats[+]
  • process lenses
• magnifiers (lenses)
• water lenses
• prismatic lenses
• Fresnel lenses
• polycapillary lenses

Anotations

Scope note:

Pieces of glass, crystal, plastic, or other transparent substance characterized by having two curved surfaces or one plane and one curved surface, serving to cause regular convergence or divergence of the rays of light passing through it. Lenses may be components of a larger object or objects in themselves. They are used for magnifying vision in eyeglasses, binoculars, telescopes, microscopes, cameras, and for directing or magnifying light in lighting devices such as flashlights or lighthouses.