Olympus VMF Repair Manual

Standards L.I.F.O.
1. For centration of tolerance between the left and the right objectives of each magnification L.l. F .0.
(Length of I m age Formation Plane of Objective): 0.2
2. For parcentration tolerance of one objective with the other
L.I.F .0.: 0.2
Since the size of the image of an object (specimen) varies with the objective magnification, the
term
"Length of Image Formation Plane of Objective" (L.I.F.O.) is used to indicate these standard
tolerances in this repair manual.
Fig. 43
gives these standards for each magnification. The following formula explains the relation-
ship
of the actual length with L.l. F .0.
Actual length
L.I.F.O.
Objective power
In
case of the 4X objective, for example, the calculation is as follows:
Actual length
=
0
4
2
= 0.05 mm
Therefore, the actual length
of the 4X objective is within the radius of the smallest of the con-
centric circles
of the Test Plate.
The value (standard value)
of one graduation for each magnification is
schematically shown below:
AB= 0.05 mm (actual length)
A'B' = 0.2 (L.I.F.O.)
0.2 0.2
0.2
Eyepiece
0.2
0.05 mm
0.2 0.2
C'!
0
N
0
(One graduation for 1 X = 0.05 mm)
(One graduation for 2X = 0.1 mm)
(One graduation for 4X = 0.2 mm)
Fig.
43
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Olympus VMF Specifications

General

Brand	Olympus
Model	VMF
Category	Microscope
Language	English