Diopter Adjustment; Aperture Diaphragm; Use With Rechargeable Batteries - Optika Italy B-150P Serie Manual De Instrucciones

9.5

Diopter adjustment

Only B-150P-BRPL
1. Look into the right eyepiece with your right eye only, and fo-
cus on the specimen.
2. Look into the left eyepiece with your left eye only. If the image
is not sharp, use the dioptric adjustment ring ① to compen-
sate. (Fig. 8)
• The adjustment range is ±5 diopter. The number indicat-
ed on the adjustment ring graduation should correspond
to the operator's dioptric correction.
9.6

Aperture diaphragm

• The Numerical Aperture (N.A.) value of the aperture dia-
phragm affects the image contrast. Increasing or reducing
this value one can vary resolution, contrast and depth of fo-
cus of the image. Move the diaphragm lever ② (Fig. 9) to-
ward left or right to decrease or increase the N.A. value.
• With low contrast specimens set the numerical aperture to
about 70%-80% of the objective's N.A. If necessary, remove
on eyepiece and, looking into empty sleeve, adjust the con-
denser's diaphragm in order to obtain an image like the one
in Fig. 10
9.7

Use with rechargeable batteries

When the microscope is plugged with the power supply, the LED
indicator for the battery recharge ③ is lit. (Fig. 14)
• Power supply connected, low battery: led turns RED. When
charging is finished, it turns GREEN.
• Power supply not connected, microscope off: LED is always
OFF.
• Power supply not connected, microscope on, battery
charged: LED is GREEN.
• Power supply not connected, microscope on, battery almost
empty: LED is RED.
①
APERTURE
DIAPHRAGM
③
Page 10
②
70-80%
FIELD OF VIEW
F F ig. 8 ig. 8
F ig. 9 F ig. 9
30-20%
F ig. 10 F ig. 10
F ig. 11 F ig. 11