Olympus X - Assembly; Optical System

3-
ASSEMBLY
As~emble the itHtrument in the following order:
1. Set the body onto th e yoke at the top of the
stand, securing it by the ~c rew provided.
2.
Set the inclined head on the seat at the top of
the body, and fasten the clamp screw tightly.
3. Place the de3ired stage plate in the receptacle
on the stage.
The instrument is now ready for obsen·ation by
natural light.
For trans-illuminated observation, the whole
instrument as assembled above is then set on the
illuminating stand. Natural or artificial light will be
reflt:cted
to the specime n by the mir ror. If necessary
set the iris equipment on the sub-stage base. 1'\ow
with attachment of hand rests to this base, you are
all ready for prolonged observation under any condi.
lions.
r l
-4-
A. OPTICAL SYSTEM
The optical system for :\lode! X cons i sts of objective lenses hereinafter
referred to as objectives) , magnification-varying tube lenses hereinafter re -
ferred to as variables ), and eyepieces, as shown below. ( ILLUSTRATION )
The beams from the specimen proceed into the Prism P, with an angle
of visual axis of 12°, wherein they are turned parallel to each other, further
proceeding to the variab le lens system ( VL and VL
1
) ,
the tube lens system
( PL and L
1
) ,
and to P,. Then, still maintaining parallel position they ente r
porro-prisms at P3, at the last facet of which they again assume a 12 angle
of visual axis, forming images at the eyepieces.
As described above, the variables are paired on parallel optical axes.
Consequently five magnifications are attainable, i. e. two sets of normal and
reverse p osit ions plue a blank position. ( see page 4)
As to the trans-illumination system the sub-stage base stores a reflecting
mirror and a lOOV 40W bulb. In addition, special accessories such as an iris
apparatus (for field adjustment ) and an epi-illuminator are available.