While my first microscopes were American Optical Series 10s
(cheap and plentiful in the U.S.),
they were also interesting because AO pioneered diascopic infinity objectives.
That did not preclude also acquiring a
which used Nikon's highly popular
Model S optics.
That Apophot was too large to move from KY,
instead using AO/Reichert microscopes
until concluding that:
their episcopic illumination was "not ideal"
larger than RMS objectives are wanted for sharp darkfield epi
fewer old optics in paths to camera sensors benefit contrast and sharpness.
210mm tube length
Interest in Nikon 210mm objectives was motivated by
macro photographers using CF M Plan objectives
relatively low cost and wide availability of Nikon EPI microscopes with CF BD Plan objectives
having M26x0.75 threads:
Comparable Mitutoyo objectives have
M26x0.706 threads (36TPI, same as RMS).
Beware of incompatible M26x1 (robot lens) and M26x0.5
(Roedenstock Schneider enlarger lens shutter) threads...
While Nikon's newer infinity objectives are more highly rated,
they are also significantly more expensive, since still current technology.
Obvious frames for 210 BD objectives are Nikon's Optiphots,
which are more capable than contemporary Labophots with only RMS objective turrets,
although all are notorious for
fragile plastic fine focus gears.
Optiphot frames come in 4 flavors:
IC inspection (
-88 100 and 150), of which 100 and 150 uses infinity optics
Optiphot-2, with 100W illumination
Optiphot(-1), using less plastic than Optiphot-2, but also 50W instead of 100W illumination
Although vertical illuminators are often installed on Optiphot-1 and -2,
IC inspection frames have XY stages with more space for examining opaque objects.
Optiphot-200 and -300, which (like 150) use infinity objectives on frames more similar to Eclipse
- ELWD 0.3 Condenser
- Phase Contrast
- Phase Contrast-2 ELWD 0.3 turret as Dark Field Turret
- Swing out
- Labophot 1
- LED conversion
- Metaphot, first CF 210mm tube length microscope
- Optiphot 1
- Optiphot 66
- Base illumination
- Diascopic conversion
- Questions - Sure Squintsalot:
Part 1: polarizing
Part 2: fine focus, base
- Optiphot-66 DIC
- Photo relay lenses
- Stages and crossed roller bearing rails
- Trinocular heads
- Vertical Illuminators
- Nikon Optiphot Series Microscopes - lavinia.as.arizona.edu
- Mike Tuell
- Optiphot-66/77/88 | Nikon Multiphot system - prc68.com