IPC Subgroup
G02B 9/1 one + and one – component
Introduced: September 1968
Last revised: January 2006
Full Title
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – > having two components only > one + and one – component
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS