Supplementary Optics - SCHOTT KL 2500 LCD Instructions For Use Manual

The approximate color temperature of
the light emitted by the halogen lamp
(18) is indicated on the LCD display (5).
The color temperature of the light can
be set by turning the light intensity
adjustment (3) (step width 50 K).
After bypassing the barrier at position 5,
a lamp symbol (20) appears in the LCD
display and flashes for the first few
seconds. This acts as a maximum light
indication and gives a warning that the
expected lamp lifetime will be reduced
compared to position 5.
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2.3.2 Mechanical aperture
The light intensity can be altered
steplessly while retaining the color
temperature by turning the adjustment
knob of the mechanical aperture (4).
Two fixed end-stops and three
additional retention points (marked
with the letters A to E) enable defined
aperture settings to be selected
reproducibly.
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Position A gives the lowest brightness,
and maximum brightness is achieved
in position E (aperture completely
open). Turning the adjustment knob
from one retention point to the next
approximately doubles or halves the
light intensity respectively each time.
The adjustment knob cannot be
turned beyond the end-stops A and E
respectively.

2.4 Supplementary optics

Use of the supplementary optics
ensures that uniform, high-intensity
illumination is achieved even when
using light-guides with a smaller
bundle diameter.
If the illumination is carried out with
imaging or focussing optical systems at
the light guide exit, optimally uniform
illumination is achieved by moving the
supplementary optics out of the optical
path.
Position - Supplementary optics in
optical path:
uniform illumination with no optical
systems at the light guide exit.
Position - Supplementary optics out
of optical path:
uniform illumination with optical
systems at the light guide exit.
The supplementary optics must always
be positioned at the end stop.
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