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First unplug the ring light connector.
Then remove optics assembly using two hands.
3.4
Optimizing Substage Illumination
MVR systems with dedicated optics (zoom or telecentric) and without a quick-change bayonet
lens mount are shipped with LED substage illumination that is optimized for these optics. No
action is required by the user.
MVR systems with the quick-change bayonet lens mount require that substage illumination be
modified when switching between telecentric and zoom optics, since a smaller aperture will
produce better results with zoom optics. This is achieved by reducing the aperture of a variable
aperture if such an aperture is part of the system, or by dropping in an aperture plate if furnished
with the zoom optics.
Access to the substage lighting requires that the glass plate be removed from the MVR stage.
To do so, remove the four screws that secure the glass plate to the stage. Once the se have been
removed, place two fingers in the spaces vacated by the screws and pry up one side of the glass
pate. Better yet, use a suction cup to pull up one side of the glass plate.
3.5
Mechanically Leveling the Stage Glass
The glass plate can be considered level if the video image of an artifact remains in focus at high
optical magnification for any stage position. MVR systems allow the glass plate to be leveled
mechanically by about 1.5 mm using four screws whose head has been machined to a conical tip.
Turn a screw clockwise with a 2.5 mm Allen wrench to move it toward the glass plate and raise
the stage. Turn a screw counterclockwise to move it away from the glass plate to lower it. Note
that glass does not rest directly on the conical tips, but is held by a steel frame. The glass plate
is secured by screws with a spring washer. Orient the washers as shown in the photo below,
keeping them barely compressed so that they have an adjustment range. Four-point support will
provide pivot action around two diagonal axes, so make screw adjustments until the image
remains in focus and the glass plate no longer tips around a diagonal axis.
Conical tip, indentation for attachment
screw with spring washer
Glass plate with steel base and attachment
screw with spring washer