Focus Lock Lever (Sz-A6); Diopter Compensation - Optika Italy SZ Serie Manual De Instrucciones

9.4

Focus lock lever (SZ-A6)

1. The lock lever serves as the focus memory function.
After focusing the sample, pull the lever ① towards the front
of the microscope and lock it. (Fig. 45)
• This defines the upper focus point.
2. Now you can move the focus of the microscope with the
coarse knob, replace the sample and then bring the system
back to the upper point: the sample will be approximately in
focus and you will only have to make a fine adjustment to
obtain the optimal focus.
• The micrometric movement is not affected by the focus
block.
• To remove the lock, move the lever in the opposite
direction to the one used for the lock.
9.5

Diopter compensation

• This compensation makes possible for people wearing
glasses to adjust the microscope to their eyes and use
the microscope without glasses.
1. Put the zoom down to the lowest magnification ② and focus
the specimen with the focusing knobs ③. (Fig. 46)
2. Put the zoom to the maximum magnification and repeat the
focusing.
3. Return to the lowest magnification: the specimen will be out
of focus.
4. Adjust the diopter compensation ring of the right eyepiece
④ (Fig. 47) until the image of the right eyepiece is clear and
sharp. Repeat the procedure for the left eyepiece.
5. Check the focus of the image for the whole zoom range. It
should be perfectly parfocal (focus is maintained during the
change of magnification).
①
②
Page 37
LOCK
UNLOCK
F ig. 45 F ig. 45
③
F ig. 46 F ig. 46
④
F ig. 47 F ig. 47