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Y, IV]ANIPULATION
OF EACH ELEIV]ENT
2) 0ptical Path Change-0ver
in the Trinocular
Eyepiece
Tube
Note)Binocular eyepiece tube B" does not have rhe optical path
change -over function. 10O% of the light entefs the observation
(1 ) When using the trinocular eyepiece tube "F"
A s s h o \ / n n F i g . 5 I . w h e n t h e o b s e r v a r i o n r u b e
i s t u r n e d t o w a r d
the Lrser, 100% of the lighr enters the obsetuat on tube.
A s s h o w n n F i g 5 2 , w h e n t h e o b s e r v a t o n r u b e
s r e v o l v e d 6 0 ' l e f t ,
1 0 0 % o f t h e l i g h l e n t e r s r h e v e r t i c a
p h o t o t u b e . 1 n e i r h e f c a s e . t u r n
the tube to the limit.
F i s . 5 1
F t s . 5 2
(2) When using the trinocular eyepiece tube 'T"
A s s h o w n n F g . 6 . w h e n l h e c h a n g e o v e r k n o b i s p u s h e d u n t t
reaches the imit llt, 1O0% of the ight enters the observarion rube
When the change over knob feaches the nlermediate cick E, rhe
propon on ol I ght eftering the observarion rube and photo tube w l
be 14r86 When the change over knob is pu ed ro rhe mll El .
0 0 0 ;
r a t o
- . a
t 6 p
o o L o
O b s e r v a r o n r u b a 1 O 0 %
F i g . 6
1 7