KL1500 and 2500 Brochure

Refer to the original PDF for tables, figures and page layout.

Page 1
M i c r o s c o p y  f r o m  C a r l  Z e i s s
KL1500 LCD and
KL 2500 LCD
Cold Light Sources
Light Sources for 
Illumination and Contrasting
Stereomicroscopy
Stereomicroscopy needs a lot of light in a narrow space. With normal light
sources this would mean a lot of heat, which is very likely to ruin your speci-
mens. Cold light sources ensure intensive specimen illumination with “cold”,
i.e. infrared-free light. This visible light is conducted right up to the specimen via
high-quality fiber-optic light guides.
Specimen-preserving cold light is a
standard feature of Carl Zeiss stereo-
microscopes. The performance of the
KL1500 LCD and KL 2500 LCD Cold
Light Sources sets new standards for
stereomicroscope illumination.
Salient features:
• LC display of color temperature
and operating modes
• Continuous electronic and
mechanical dimming
• Stackability without com-
promise on function or operating
convenience
• Easy lamp change – 
no tools required


Page 2
Illuminating and Contrasting Methods
Spotlight 
Where the stereomicros-
copist needs a lot of light
concentrated in a small
spot, fiber-optic spot illu-
minators are the answer. 
Annular light
Annular illuminators provide
circular illumination directed
toward the center of the
specimen, with almost no
shadows. Annular slit illumi-
nators allow darkfield obser-
vation with either epi- or
transillumination.
Linear slit light
Epi-illumination of the
specimen surface at a very
small angle makes structures
of extremely low height 
visible.
Fiber-optic light guides, whether slack or of the goose-neck
type, have become standard as spot epi-illuminators in
stereomicroscopy. Their flexibility allows them to be arranged
at almost any position and angle relative to the specimen. 
With the fiber illuminator set vertically inside the focusing
bracket, you can use the Transillumination Light Box
for brightfield transmitted-light observation, thanks to a
two-mirror deflection system.
For coaxial illumination (only for Stemi SV microscopes),
the illumination light is directly coupled into the stereo-
microscope’s observation beam path. Thus, the size of 
the light spot automatically adjusts to the specimen field
covered. Disturbing reflections are eliminated by an anti-
reflection cap.
For darkfield epi-illumination, the fibers of the annular
illuminator are arranged to cast the light onto the specimen 
at an angle of 60° rather than vertically. 
This way, only the light that is diffracted by the specimen can
enter the objective.
For all-round darkfield transmitted light, a central stop
between annular illuminator and specimen obstructs the
direct light. Here again, only the light that is diffracted by
the specimen and therefore carries information about it,
can enter the objective. Switching from the central stop to
an opal glass disk allows you to observe the specimen with
brightfield transmitted light.
Here, the round cross-section of the fiber bundle is con-
verted into a linear (slit) arrangement. The rays emerging
from the linear slit form a carpet of light covering a large
specimen area and casting shadows even of the smallest
elevations.
2
1
2
3
4
5
6


Page 3
3
Inclined epi-illumination 
casts shadows at the specimen
structures, a prerequisite for 
three-dimensional images.
Simple configuration 
for brightfield transmitted-
light illumination.
This brightfield illuminator
brings out many details of
flat, reflecting or polarizing
surfaces.
For darkfield epi-illumination,
the annular illuminator is
positioned close to the specimen.
It is used together with a sleeve
that prevents extraneous light
from impairing the contrast.
Especially with transmitted light,
omnilateral darkfield reveals
finest structures at high contrast.
With incident illumination at
an extremely flat angle, added
contrast is produced by the high
light yield and distinct shadows.
417090-9002-000
Focusing attachment to
000000-1063-292
in preparation:
Focusing attachment to
417063-9901-000
417059-9901-000
Focusing attachment
without filters
417060-9901-000
(no ill.)
Focusing attachment
and filter set
455158-9901-000
Coaxial bright-field epi-illuminator
(for Objectives S 1,0x only)
455145-0000-000
Light guide with focusing attachment
417063-9901-000
Flexible light guide, 1 branch, 8/1000 mm
417052-9901-000
Goose-neck light guide, 1 branch, 4.5/600 mm
417075-9001-000
Goose-neck light guide, 2 branches, 4.5/600 mm
417075-9003-000 (no ill.)
Goose-neck light guide, 3 branches, 4.5/600 mm
455146-0000-000
Universal incident-light fiber illumination system
417075-9004-000
Flexible light guide, 2 branch 4.5/1000 mm
417075-9002-000
Flexible light guide, 1 branch 3/1000 mm
000000-1063-292
Flexible light guide, 1 branch, 15/1000 mm
(only for KL 2500 LCD)
000000-1004-001 (no ill.)
Ring illuminator for incident-light darkfield,
adjustable
417068-0000-000
Slit-ring illuminator, d=58mm
417090-9001-000
Slit-ring illuminator, d=66 mm
(only for KL 2500 LCD)
417075-9011-000
Ring illuminator for incident-light darkfield
000000-1063-307
Line light S, l=50 mm


Page 4
4
Illustrations on page 2:
1 Damaged gold coat, epi-illumination
2 Tragopogon blossom, brightfield transmitted light
3 Damaged gold coat, coaxial illumination
4 Damaged gold coat, darkfield epi-illumination
5 Tragopogon blossom, darkfield transmitted light
6 Fingerprint, “grayfield” epi-illumination
A modular range of fiber-optic components permits the 
illumination to be adapted to the observation task.
00000-1063-182 (without illustration)
Cold-light source
KL 1500 LCD (115 V)
000000-1063-181
Cold-light source
KL 1500 LCD (230V)
417053-0000-000
Halogen lamp 15 V 150 W
000000-0163-306
Conversion filter S
000000-1063-304
Filter S, yellow
000000-1063-303
Filter S, green
000000-1063-302
Filter S, red
000000-1063-301
Filter S, blue
000000-1063-317
Conversion filter, d=28 mm
000000-1063-316
Yellow filter, d=28 mm
000000-1063-315
Green filter, d=28 mm
000000-1063-314
Red filter, d=28 mm
000000-1063-313
Blue filter, d=28 mm
Halogen lamp 24 V 250 W
000000-1063-184 (no ill.)
Cold-light source
KL 2500 LCD (115 V)
000000-1063-183
Cold-light source
KL 2500 LCD (230 V)
000000-0300-271


Page 5
Features of the 
Cold-Light Sources
5
Switch for 
optimizing the
illumination
LC display of color
temperature and
operating mode
Stabilized 
electronic
brightness 
control
Connection of remote
control keypad or 
RS 232 interface 
(KL 2500 LCD only)
5-place filter wheel
accommodating filters 
of 28 mm dia.
(KL 2500 LCD only)
Sturdy collet for 
light guides with active 
fiber diameters 
– up to   9 mm (KL1500 LCD)
– up to 15 mm (KL2500 LCD)
Lamp compart-
ment, permits 
fast change of the
halogen lamp
without tool
Mechanical
brightness control
without variation
of the light’s color
temperature


Page 6
KL 1500 LCD
KL 2500 LCD
Weight
4.8 kg
6 kg
Cooling
Low-noise blower
Stackability
yes
RS232 interface
no
option
Filter holder
Filter insert S
5-place filter wheel for
28 mm filter dia.
Product certification
115 V version
c CSA / UL
230 V version
VDE / EMC
Light data
Luminous flux (Step 6)
600 lm
1300 lm
Brightness control
Electronic and mechanical
Active fiber bundle dia.
max. 9 mm
max. 15 mm
Electrical data
Operating voltage 115 V
100 V a.c., 50/60 Hz
120 V a.c., 60 Hz
Operating voltage 230 V
220 V … 240 V a.c., 50/60 Hz
Enclosure
Protection class II
Lamp type
Halogen reflector lamp
Rated lamp voltage
15 V
24 V
Rated lamp power
150 W
250 W
Mean lamp life
Step 4
1500 h
Step 5
150 h
Specification
Subject to change.
46-0003 e/08.03
Printed on environment-friendly paper,
bleached without the use of chlorine.
(complies with basic requirements of Annex I 
to Medical Products Directive 93/42/EEC)
Carl Zeiss 
Light Microscopy
P.O.B. 40 41
37030 Göttingen
GERMANY
Phone: ++49 5 51 50 60 660
Telefax: ++49 5 51 50 60 464
E-Mail: micro@zeiss.de
www.zeiss.de/micro
For more information contact: 
Allied High Tech Products, Inc. 
2376 E. Pacifica Place 
Rancho Dominguez, CA 90220 
(800) 675-1118 
www.alliedhightech.com