Illuminating High-powered Objectives
Infinity's instruments and lenses are unique because they allow multi-mode illuminators
to be attached directly to them. Direct attachment, however, is only worthwhile
at relatively close working distances. Even though Infinity's selection of adapters
would technically permit it, there would be no purpose using a 21mm fiber
optic ring light on the front of Model K2 at a working distance of two meters—the
light would never "register." On the other hand, a 66mm ring light at
200mm would be possible.
While designing our instruments and lenses, we carefully considered which objectives
and front housings can mate with appropriate illuminators and which cannot (or should
not). For closer-focusing objectives (such as those used with Model KC/S and InfiniTube),
an extensive selection of adapters and properly-chosen dimensions allow direct attachment
of ring lights from 66mm down to 21mm inside diameter.
Our IF-Series, Achrovid™ and LWD-Series objectives have been designed for
Model KC/S, InfiniTube Standard and InfiniTube Special so that their long working
distances permit external illumination at even the highest magnifications. Due to
their long stand-off, one or two fiber-optic light guides can be positioned near
the objective. Also, intense halogen lamps will also prove suitable. These built-in
design considerations make illuminating objects as simple as possible–even
at relatively high magnifications.
When objects are flat and highly reflective, use of our coaxial illuminators is
recommended. These interface with our InfiniTube, Model KC/S, and Model
K2/S.