Optika B-380 Serie Manual De Instrucciones página 21

11. Rotating the upper part of the centering telescope
focus the image of the light ring visible in the
periphery of the field of view. (Fig. 30)
• If the condenser is not perfectly centered or if
the condenser is not at the exact height (too
high or too low), the projected image will be
similar to the one in Fig. 31.
12. Fine adjust the condenser centering using the
condenser height adjustment knob, on the
condenser ① and LED ② centering screws. (Fig.
32)
13. After properly setting the condenser, remove
the centering telescope and insert again the
eyepiece. Now begin the observation.
14. 100x objective has in internal iris diaphragm that
allows the adjustment of the numerical aperture.
Rotate the diaphragm ③ to close the iris. (Fig. 33)
Page 21
Fig. 30
Fig. 31
②
①
Fig. 32
③
Fig. 33