IPC Subgroup
G02B 11/32 having six lenses only
Introduced: September 1968
Last revised: January 2006
Full Title
Optical objectives characterised by the total number of simple and compound lenses forming the objective and their arrangement > having six lenses only
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS