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User instructions
Transmitted light phase contrast microscope
KERN
OBL-14, OBL-15
Version 1.1
11/2022
OBL-14-15-BA-e-2211
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
OBL 145, OBL 146, OBL 155, OBL 156
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
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Summary of Contents for KERN Optics OBL-14
- Page 1 KERN & Sohn GmbH Ziegelei 1 Tel: +49-[0]7433- 9933-0 D-72336 Balingen Fax: +49-[0]7433-9933-149 E-Mail: info@kern-sohn.com Internet: www.kern-sohn.com User instructions Transmitted light phase contrast microscope KERN OBL-14, OBL-15 OBL 145, OBL 146, OBL 155, OBL 156 Version 1.1 11/2022 OBL-14-15-BA-e-2211...
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Page 2: Table Of Contents
KERN OBL-14, OBL-15 Version 1.1 11/2022 User instructions Phase contrast microscope Table of contents Before use ..................3 General notes ..........................3 Notes on the electrical system ....................3 Storage ............................4 Maintenance and cleaning ....................... 5 Nomenclature ................6 Technical data / Features ............ -
Page 3: Before Use
Suitable replacement fuses are included with the delivery. When carrying out any procedures whereby you come into contact with the electrical system of the device, such as, for example, changing the bulb or fuse, only carry out these procedures when the power is disconnected. OBL-14-15-BA-e-2211... -
Page 4: Storage
The best way to store accessories which consist of optical elements, such as, for example, eyepieces and objectives, is in a dry box with desiccant. OBL-14-15-BA-e-2211... -
Page 5: Maintenance And Cleaning
• Special cleaner for optical lenses • Special optical cleaning cloths • Bellows • Brush When handled correctly and checked regularly, the microscope should give many years of efficient service. Should repairs still be necessary, please contact your KERN dealer or our Technical Department. OBL-14-15-BA-e-2211... -
Page 6: Nomenclature
2 Nomenclature OBL-14-15-BA-e-2211... - Page 7 Rear view Carrying handle Adjusting ring torque Fine adjustment knob Main switch Coarse adjustment knob Fuse Power connection Adjusting ring torque Condenser Focus dial OBL-14-15-BA-e-2211...
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Page 8: Technical Data / Features
400x280x435 mm Net weight: 6,7 kg Gross weight: 8 kg Input voltage: AC 100-240V, 50-60Hz Output voltage DC 1,2-6V OBL 145 / OBL 155: Output voltage DC 5V OBL 146 / OBL 156: Fuse 145 / OBL 155: 2A 5x20mm OBL-14-15-BA-e-2211... - Page 9 OBL-14-15-BA-e-2211...
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Page 10: Assembly
4.4 Colour filter A blue colour filter is already an integral part of the microscopes of the series OBL-14 and OBL-15. It is fitted underneath the field diaphragm. In order to use suitable filters, these can simply be placed in the ring bracket of the field lens. -
Page 11: Ph Condenser + Ph Slide
(see illustration on the left). To move the sample into the beam path, you must use the adjustment wheels on the right of the angle table (see illustration on the right). You can position a total of two object holders at the same time. OBL-14-15-BA-e-2211... -
Page 12: Pre-) Focussing
Important: In order to avoid damaging to the focussing system, the left and right adjustment wheels for the coarse and fine adjustment knob must never be rotated at the same time in opposite directions. OBL-14-15-BA-e-2211... -
Page 13: Adjusting The Interpupillary Distance
2. Then look through the left eyepiece with the left eye and use the dioptre adjustment ring to focus the image. To do this, you just need to turn the ring in both directions (see illustration), to find out where the image is at its most focussed. OBL-14-15-BA-e-2211... -
Page 14: Adjusting The Magnification
If you have focussed the object to be observed for a specific magnification, then if you select the objective with the next greatest magnification, then the object will be slightly out of focus. Use the fine adjustment knob to make a slight adjustment and restore the focus. OBL-14-15-BA-e-2211... -
Page 15: Adjusting The Koehler Illumination
If, as with the devices in the KERN OBL-14 and OBL-15 series, the lighting can be set in accordance with Koehler, the result is homogenous illumination of the slide and avoidance of disruptive stray light. - Page 16 7. Possibly there is the need of re-adjusting the focus and x-y axis. 8. Observe the object. If another magnification is selected afterwards, then the Koehler illumination does not have to be reset from scratch, only the aperture diaphragm and field diaphragm need to be adjusted as required. OBL-14-15-BA-e-2211...
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Page 17: Using Eye Cups
In order to maintain hygiene, we would therefore recommend that you clean the eye cups regularly (e.g. with a damp cloth). Eye cups High Eye Point eyepiece (identified by the glasses symbol) OBL-14-15-BA-e-2211... -
Page 18: Using Oil Immersion Objectives
5.8 Using oil immersion objectives The 100x objectives of the OBL-14 and OBL-15 series are objectives which can be used with oil immersion (they are always marked with the word “OIL”). Using these generates a particularly high resolution for microscopic images. -
Page 19: Phase Contrast Unit
(10x, 20x, 40x or 100x), a PH slider, which is adapted to the lens being used, a centring telescope and a green filter. The standard outfit of the models of the series OBL-14 and OBL-15 always includes a 10x and 40x phase contrast unit. - Page 20 Depending on the preferences of the user, using a green filter can produce a more effective and pleasant image. To achieve this, the green filter must be placed in the ring bracket of the field lens. OBL-14-15-BA-e-2211...
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Page 21: Changing The Bulb
Now the new module has to be mounted in the same why as the original one. After the bulb holder has been replaced in the underside of the device and the screws replaced, the bulb replacement procedure is complete. OBL-14-15-BA-e-2211... -
Page 22: Changing The Fuse
In order to be able to bring both images into focus, the focus can be adjusted by those adapters. OBL-14-15-BA-e-2211... -
Page 23: Trouble Shooting
Dioptre setting has not been carried out correctly The field of view of one eye does not Different eyepieces are used for the match that of the other eye righthand and lefthand side The eyes are not used to using a microscope OBL-14-15-BA-e-2211... - Page 24 The stage moves down on its own The rotational resistance brake is not tight The fine adjustment knob moves on its enough When you move the table, the image The stage was not correctly fitted becomes blurred OBL-14-15-BA-e-2211...
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Page 25: Service
The descriptions and illustrations in this user manual are subject to change without notice. Further developments on the device may lead to these changes. All language versions contain a non-binding translation. The original German document is the binding version. OBL-14-15-BA-e-2211... - Page 26 NOTES __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ _________________________________________________________ OBL-14-15-BA-e-2211...
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