Use; Ergonomics; Viewing Height And Interpupillary Distance; Eyepoint, Eye Contact - Leica M-Series User Manual

Use

Ergonomics, viewing height, interpupillary distance,
eye contact

Ergonomics

The reasons why users often cannot work comfortably with the
45° tube are the differing heights of the outfits, the various
accessories and working distances, and the fact that the same
instrument is often used by several people of differing builds.
This problem can be effectively solved by using the Leica
ErgoModules™.
If you have problems with the viewing configuration on your
stereomicroscope, ask your Leica consultant for the most
ergonomic Leica solutions.
Viewing height, viewing angle
• The viewing height is correct when your head and back are
comfortably positioned.
ErgoModule™
• ErgoWedge™ 5° – 25°
• ErgoWedge™ ±15°
• ErgoModule™ 50mm
• The ErgoTube™ 45° has eyepiece tubes which are 65mm
longer than the standard ones.
• ErgoModule™ 30mm – 120mm
• On the ErgoTube™, the viewing
angle is adjustable from 10° –
50°.
Holding the eyepiece tubes at
their bases, swing them up or
down (see arrow).
• After several years, regreasing
may be necessary. Send the
ErgoModule™ to the Leica
service workshop.
Interpupillary distance
• The interpupillary distance is correct when you see a single
circular field when viewing with both eyes.
Locating the eyepoint
• For 10 /21B wide-field eyepieces for spectacle wearers,
the distance from eye to eyepiece is about 22mm.
• When you can see the entire field of view without restriction,
you have found the correct position (eyepoint).
Selecting the degree of eye contact
If you do not wear spectacles, and want closer contact to the
eyepieces:
Look into the eyepieces and use
both hands to move the eye-
piece tubes closer together or
further apart.
To find the eyepoint, slowly bring
your eyes closer towards the
eyepieces.
Holding the diopter ring, turn the
eyecup anticlockwise until it is
released.
Pull the eyecup upwards.
Holding the diopter ring, turn the
eyecup clockwise.
Spectacle wearers need the whole
of the available distance. Move
the eyecups to the lowest position.
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