Chapter 8 Functions and Operations of the Devices
92
2
Focus Units, Focus Mount
There are two types of focus units for parallel optics stereo microscopes: the P2-FU Focus Unit with a manual focus knob
and P2-MFU Motorized Focus Unit. Attach the focus unit to the base. The P2-FMDN Focus Mount, that can be attached to
the support pillar of the stand to focus on the specimen, is also provided.
2.1
P2-FU Focus Unit
The P2-FU Focus Unit consists of a square-type support pillar
and a focus mount with the coaxial coarse/fine focusing system.
The focus mount is attached with the SMZ18 or SMZ25 Zooming
Body through the P2-RNI2 Intelligent Nosepiece or the P2-FM
Focus Mount Adapter. The square-type support pillar is attached
with the P2-PB Plain Base, P2-DBL LED Diascopic Illumination
Base or the P2-DBF Fiber Diascopic Illumination Base. Three
types of stands can be configured.
Focusing operation
Focus can be adjusted using the coarse/fine focus knobs on
the right and left of the focus mount. The figure shows the
turning directions of the focus knob and the corresponding
vertical movements of the focus mount.
Turning the knob backward: Upward movement
Turning the knob forward: Downward movement
• Focusing stroke: 100 mm
• Stroke per rotation of the focus knob:
Coarse control, 18.50 mm/rotation
Fine control, 3.27 mm/rotation
P2-FU Focus Unit
Notes on turning the focus knobs
• Do not turn (or twist) the right and left focus knobs in opposite
directions at the same time. Doing so may cause malfunction.
• When the focus knobs reach their rotational limits for the unit’s
vertical movement, do not forcibly turn it further. Doing so may
cause malfunction.
1 x
SHR Plan apo WD:60
2 x
SHR Plan apo WD:20
Do not turn the knobs in the opposite direction!
P2-FU Focus Unit
(square-type support
pillar)
P2-FU Focus Unit
(focus mount)
Upward movement
Focus knob
(inner: coarse control/
outer: fine control)
Downward movement
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