7
2. Remove the eyepiece and observe from the lens barrel. The aperture image can be seen,
as shown in Figure 2 above.
2-5Focusing system
1
Coarse focus knob: move the stage up and
down to focus
2
Fine focus knob (right side of frame): fine
adjustment of focusing position
3
Fine focus knob (left side of bracket) to fine adjust the focus position
4
Coarse focus limiting device: set the upper limit of stage position (to avoid collision)
After locking the coarse focus limit device, the coarse adjustment travel
will be limited to the position set by the limit and cannot rise to the height
beyond the limit.
5
Loose and tight device for coarse and accurate focus: adjust coarse and accurate focus,
rotate focus, rotate focus
6
The tightness of the knob as it turns. The coarse focusing device has been adjusted in
advance and is easy to use.
If necessary, the loose and tight state can be changed by using the loose
and tight device ⑤. When the adjusting ring is rotated in the direction of
the arrow, the helical tension of the coarse focus increases, on the contrary,
it decreases.
