1. Giriş
This manual provides instructions for the proper setup, operation, and maintenance of your Levenhuk 720B Binocular Microscope. Please read these instructions carefully before using the instrument to ensure correct usage and to prolong its lifespan. This microscope is designed for laboratory, clinical, and medical research applications.
2. Ürün Bittiview
The Levenhuk 720B is a binocular compound microscope featuring multiple objective lenses and eyepieces for various magnification levels. It includes a mechanical stage, LED illumination, and coarse/fine focusing mechanisms.

Şekil 2.1: Ön view of the Levenhuk 720B Binocular Microscope, showing the binocular head, objective lenses, mechanical stage ve baz.

Figure 2.2: Included accessories: WF10x/18mm eyepieces (2), WF20x eyepieces (2), color filters (blue, yellow, green), immersion oil, cleaning cloth, hex key, and spare fuse.
3. Kurulum
- Paketin açılması: Tüm parçaları ambalajından dikkatlice çıkarın. İlerideki taşıma veya saklama için orijinal ambalajı saklayın.
- Atama: Mikroskobu sabit, düz bir yüzeye, doğrudan güneş ışığından, yüksek sıcaklıklardan, tozdan ve titreşimlerden uzak bir yere yerleştirin.
- Güç Bağlantısı: Connect the power cord to the microscope's power input (AC100V-240V, 50/60Hz) located at the rear of the base, then plug it into a suitable electrical outlet. Ensure the power switch is in the OFF position before connecting.
- Göz merceği montajı: Insert the desired eyepieces (e.g., WF10x) into the eyepiece tubes of the binocular head.
- Binocular Head Adjustment: If the binocular head is rotatable, adjust it to a comfortable viewpozisyon.

Şekil 3.1: Arka view of the microscope showing the power input and switch.
4. Kullanım Talimatları
- Güç Açık: Flip the power switch located on the rear of the microscope base to the ON position. Adjust the illumination intensity using the dimmer control.
- Numune Yerleşimi: Place a prepared microscope slide onto the mechanical stage. Secure it with the stage clips. Use the stage control knobs to center the specimen area of interest over the condenser aperture.
- Büyütme Oranı Seçimi: Rotate the revolving nosepiece to select the lowest power objective lens (e.g., 4x). Ensure the objective clicks firmly into place.
- Odaklanma:
- While looking through the eyepieces, use the kaba odaklama düğmesi Numuneyi yaklaşık olarak netleştirmek için.
- Daha sonra şunu kullanın: ince odaklama düğmesi for precise focusing until the image is sharp and clear.
- Aydınlatma Ayarı:
- Adjust the brightness using the dimmer control.
- Adjust the iris diaphragm lever on the condenser to control the amount of light reaching the specimen and improve contrast.
- Gözbebekleri Arası Mesafe Ayarlaması: Adjust the distance between the two eyepiece tubes by gently pushing them together or pulling them apart until you see a single, circular field of view.
- Diyoptri Ayarı: If one eyepiece has a diopter adjustment ring, focus on the specimen with your dominant eye (usually the right eye) using only the fine focus knob. Then, close your dominant eye and use the diopter adjustment ring on the other eyepiece to focus for your non-dominant eye without touching the fine focus knob.
- Higher Magnification: Once focused at low power, rotate the nosepiece to a higher power objective. Only minor adjustments with the fine focus knob should be needed due to the parfocal design.
- Immersion Oil (for 100x objective): For the 100x objective lens, a drop of immersion oil must be placed directly on the specimen slide. Lower the objective into the oil carefully. After use, clean the 100x objective and slide thoroughly with lens cleaning solution.

Şekil 4.1: Yakın çekim view mekanik stage with the condenser and iris diaphragm visible below.

Şekil 4.2: View of the illuminated condenser and objective lens from below the stage.
5. Bakım
- Lens Temizliği: Use a soft, lint-free lens cleaning cloth and a specialized lens cleaning solution. Never touch optical surfaces with your fingers.
- Genel Temizlik: Mikroskop gövdesini yumuşak bir bezle silin.amp bez. Aşındırıcı temizleyiciler veya solventler kullanmaktan kaçının.
- Depolamak: Kullanılmadığı zamanlarda, toz ve kirden korumak için mikroskobu bir toz kapağıyla örtün. Kuru ve serin bir yerde saklayın.
- Sigorta Değişimi: If the illumination fails, check the fuse located near the power input. Replace it with a fuse of the same type and rating (a spare fuse is included).
6. Sorun Giderme
| Sorun | Olası Neden | Çözüm |
|---|---|---|
| Aydınlatma yok | Power cord disconnected, power switch off, dimmer at minimum, blown fuse. | Check power connection, turn on switch, increase dimmer, replace fuse. |
| Görüntü net değil/bulanık | Incorrect focus, objective lens dirty, eyepiece dirty, slide upside down. | Adjust focus, clean lenses, check slide orientation. |
| Karanlık alan view | Iris diaphragm closed, low illumination, objective not clicked into place. | Open diaphragm, increase brightness, rotate nosepiece until objective clicks. |
| Two overlapping images | Interpupillary distance incorrect. | Adjust interpupillary distance until a single field of view görülüyor. |
7. Özellikler
- Model Numarası: 69656
- Marka: Levenhuk
- Büyütme Maksimum: 2000x
- Işık Kaynağı Türü: NEDEN OLMUŞ
- Objektif Lens Açıklaması: Akromatik
- Gerçek Açı View: 45 Derece
- Güç Kaynağı: Kablolu Elektrik
- Cilttage: 110 Volt
- Ürün Ölçüleri: 19.29 x 15.75 x 10.63 inç
- Ürün Ağırlığı: 12.36 pound (5.62 Kilogram)
- UPC: 611901504766
8. Garanti ve Destek
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official Levenhuk webSite. Satın alma belgenizi garanti talepleriniz için saklayın.