www.microscopenet.com
- 18 -
Condenser Holder
Condenser Lock Thumb Screw
Note:
there are 2 phase contrast objectives: 10X and 40X, and there are 2
condenser annular rings on the annular ring switch: 10X and 40X. The
corresponding objective and annular ring must work together, i.e.
10X
phase
contrast objective must work with
10X
condenser annular ring, and so on.
2) Centering the condenser ring plate
a. Connect the power cord to the microscope and insert the plug into a power outlet.
b. Turn the desired phase contrast objective into
light path. Slide the annular ring switch to the
required annular ring corresponding to the phase
contrast objective in the light path.
c. Remove one eyepiece from the microscope
eyepiece tube and insert the centering telescope.
d. Observe from the telescope. The bright ring and
dark ring should be coincided with each other as
shown in
Fig. 21 (d)
.
e. If the ring images are not clear, turn the top of
telescope until both ring images are in focus.
f. If the bright ring is still obscure as in
Fig. 21 (b)
,
adjust the condenser focusing knob.
g. If the two ring images are not coincided as shown
in
Fig. 21 (c)
, adjust the two centering screws on
the phase contrast condenser.
h. Remove the centering telescope and replace the eyepiece.
8.3 Phase contrast kit of A1PHD:
1) Mounting the phase contrast kit
a. Replace the bright field objective(s) on nosepiece with
the phase contrast objective(s)
b. Thread the condenser ring plate onto the condenser as
shown in
Fig.22
.
c. Loosen the condenser lock thumb screw as shown in
Fig. 23
; take off the original condenser from the holder.
d. Insert the phase contrast condenser into the condenser
holder as shown in
Fig. 23
; tighten the condenser lock
thumb screw.
Fig. 23
Fig.22
(b)
(b)
(c)
(d)
Fig. 21
Fig.22
