Topcon SL-1E - Operation of the Illumination Unit

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OPERATION PROCEDURES
(4) Locking the base
To lock the base, tighten the base locking knob.
(5) Focusing
* Gross adjustment for alignment or focusing is done by the operation described in (1)
* Fine adjustment for alignment or focusing should be done by the operations described in (2)
and (3) above while looking through the microscope.
OPERATION OF THE ILLUMINATION UNIT
(1) Change of slit size
By operating the slit width control knob or turning the aperture and slit length control wheel,
ideal slit width, slit length and spot size can be achieved.
(2) Change of slit position
By turning the illumination unit or operating slit rotation control ring, the desired positioning of
the slit image can be obtained.
(3) Change of filter
A cobalt-blue filter or red-free filter can be set in the light path.
White mark -- No filter
Blue mark -- Blue filter
Green mark -- Red-free filter