having four 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 four lenses only

Classification Context

Section:: PHYSICS
Class:: OPTICS
Subclass:: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

4 direct subcodes

Child Classifications

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G02B 11/22 arranged L L L L
G02B 11/24 arranged C L L C
G02B 11/26 arranged L C C L
G02B 11/28 arranged C C C C