Read Sony SAL14TC Service Manual online
4-4
SAL14TC (1.4x TELE CONVERTER) (1.4 X Teleconverter)
2. Checking Method
1)
Attach the checking lens and SAL135F28 (product) to the flange back tester, and set the 1000 mm collimator.
Fig.4-3-3
2)
Set the focus ring of the
SAL135F28 (product)
to infinity end position while looking through the microscope, and align the optical
axis to the center of the chart image accurately.
3)
Turn the focusing knob of the tester until the chart image is the sharpest (red and green color areas are equal on the chart *).
*: Position in which the color of collimator chart changes from green into red and come into focus.
Also check the optical axis aligns with the chart center. (Refer to Fig.4-3-4.)
Note:
Figure shows example. The cause depends on individual lens.
Fig.4-3-4
4)
Calculate the flange back (f’F) of the checking lens using the following formula, and check that the specification of the Table 4-3-1 is
satisfied.
Flange back (f’F) of the checking lens = (Flange back gauge) + (Number of short-pointer revolution) + (Reading of long-pointer)
Specification
f’F (mm) (Focus of the SAL135F28 is infinity end)
“Flange back (f’F) of the SAL135F28” to +0.08 mm
Table 4-3-1
5)
When the flange back (f’F) of the checking lens is out of specification of the Table 4-3-1, perform “4-3-2. Flange Back (f’F)
Adjustment”.
Optical Alignment
Best alignment
Best alignment
Incorrect aligned
e.g. As the focusing knob is turned, the chart may appear blurry as illustrated.
The cause depends on individual lens.
e.g. As the focusing knob is turned, the chart may appear blurry as illustrated.
The cause depends on individual lens.
1000 mm collimator
SAL135F28 (product)
Checking lens
Ver. 1.2 2008.01
The changed portions from
Ver. 1.1 are shown in blue.
Ver. 1.1 are shown in blue.
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