20D Multi Adapter Set.
Instantly transform your 20D! Volk's 20 Diopter Double AsphericT
Lens can now be instantly transformed into a 16D, 24D or 28D lens
with simple add-on plus or minus power adapters, providing an optimum
range of image magnification and field of view. Precision designed
and lightweight, these durable Glass power-modifying adapter lenses
connect directly to the 20D ring utilizing special flexible tabs
for easy and secure press in/pull out power changes.
16D Power Adapter. When connected to the 20D lens, this
adapter provides a total 3.9x lateral image magnification with a
large 35° field of view. With an axial magnification of 15.21x,
this lens is ideal for highly magnified and detailed disc and macula
viewing.
24D Power Adapter. This adapter maintains the 20 diopter's
clear aperture of 48mm while providing an impressive 56° field of
view and 2.64x magnification. Larger than competitive 24 diopter
lenses, this indirect lens is well suited for both general diagnosis
and wide field imaging.
28D Power Adapter. With a clear aperture 10mm larger than
typical 28 diopter lenses, this lens combination provides an exceptionally
wide 60° field of view while maintaining a relatively high 2.39x
magnification. This lens provides outstanding resolution and an
exceedingly wide-field fundus scanning capability.
Yellow Filter Adapter. Removing wavelengths below 490nm
while fully transmitting those visible wavelengths necessary for
full color image production, the Yellow Filter Adapter provides
patient comfort and retinal protection during typical and prolonged
examinations.
|