Dioptric Adjustment; Adjusting The Interpupillary Distance; Condenser Centering; Centering Without Field Diaphragm - Optika B-380 Serie Manual De Instrucciones

10.5

Dioptric adjustment

1. Look into the right eyepiece with your right eye
only, and focus 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 compensate. (Fig. 14)
• The adjustment range is ±5 diopter. The number
indicated on the adjustment ring graduation
should correspond to the operator's dioptric
correction.
10.6

Adjusting the interpupillary distance

Observing with both eyes, hold the two eyepiece
prism assemblies. Rotate them around their common
axis until the fields of view coincide.
• The graduation on the interpupillary distance
indicator ②, pointed by the spot "." on the
eyepiece holder, shows the distance between
the operator's eyes. (Fig. 15)
The range of the interpupillary distance is 48-75mm.
10.7

Condenser centering

10.7.1 Centering without field diaphragm
The condenser is installed and pre-centered in the
factory.
To remove the condenser use an Allen wrench 1.5
mm and operate on the fixing knob placed on the
right side of the condenser holder.
Should a new centering is needed, operate in this
way:
1. Insert 4x objective in the light path (in case 4x is
not available use the lower magnification availa-
ble).
2. Focus the specimen.
3. Close the aperture diaphragm using the ring ③,
moving the ring to the value "4" related to the 4x
objective. (Fig. 16)
4. Raise the condenser to the upper limit using the
height adjustment knob ④ placed on the left side
of the condenser holder.
5. Center the condenser using the centering screws
⑤ until the field of view is evenly illuminated (in
the field of view no dark and bright areas must be
noticed).
6. Fully open the diaphragm.
①
②
④
③
Page 13
Fig. 14
Fig. 15
⑤
Fig. 16