Patent classifications
G
PHYSICS
Load children
G02
OPTICS
Load children
G02B
OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
Load children
15/00
Optical objectives with means for varying the magnification
Load children Filter patents View analytics View as hierarchy
G02B15/14
by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
Load children Filter patents View analytics View as hierarchy
G02B15/146
having more than five groups
Load children Filter patents View analytics View as hierarchy