IPC Subgroup
G02B 1/02 made of crystals, e.g. rock-salt, semiconductors
Introduced: September 1968
Last revised: January 2006
Full Title
Optical elements characterised by the material of which they are made; Optical coatings for optical elements > made of crystals, e.g. rock-salt, semiconductors
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS