Nexcope NE620 microscope (DO-8601)

Modern biological microscope for professional laboratory use
This modern biological microscope is designed for research in veterinary medicine, bacteriology, immunology, pharmacy, and other scientific disciplines, as well as for analytical laboratories. It is equipped with a trinocular head that allows any microscope camera with a C-mount to be connected via an independent optical path. The trinocular tube features height adjustment, enabling precise focus matching between the camera sensor and the eyepieces.

This is the first microscope in our range to feature an infinity-corrected optical system with objectives of 60 mm optical length. This solution provides a greater working distance, while the large lens diameter allows the use of eyepieces with a wider-than-standard field of view.

Optics and image quality
The microscope is fitted with high-quality plan achromatic objectives mounted on a coded revolving nosepiece, delivering a highly detailed and sharp image suitable for demanding scientific work.

Stage design and ergonomics
The large mechanical stage is practical and user-friendly. It features concealed drive mechanisms and moves relative to the stand only along the Y axis, saving valuable space on both sides of the microscope. The slide holder allows two specimens to be mounted at the same time, enabling quick and convenient comparison.

LED illumination system
LED illumination provides high brightness and long service life. LED light sources generate significantly less heat than halogen lamps, which is especially important during long, uninterrupted observation sessions. The microscope features automated illumination that adjusts light intensity to the currently selected objective, while still allowing manual brightness control by the user.

A built-in field diaphragm in the illuminator enables Köhler illumination, ensuring maximum resolution, brightness, and contrast, particularly at higher magnifications.

Standard configuration – technical parameters
• Wide-field eyepieces 10× / 22 mm
• Trinocular Siedentopf head inclined at 30°, interpupillary distance 47–78 mm, 50/50 light split, 360° rotation
• Third optical path with adjustable sensor-to-specimen distance (0.5× magnification factor)
• Infinity-corrected plan achromatic objectives with 60 mm optical length:
– 4× NA 0.10
– 10× NA 0.25
– 40× NA 0.65 LWD 1.5 mm, spring-loaded
– 100× NA 1.25, spring-loaded oil immersion
• Five-position rear-facing revolving nosepiece
• Mechanical stage measuring 185 × 142 mm with travel range 78 × 54 mm, slide holder for two specimens
• Abbe condenser NA 1.25 with height adjustment, graduated iris aperture diaphragm, centering mechanism, 30 mm filter slot, and compatibility with bright field, dark field, and phase contrast observation
• Coaxial coarse and fine focusing knobs
– Coarse movement: 37.7 mm per rotation
– Fine movement: 0.2 mm per rotation
– Fine scale division: 0.002 mm
– Total focusing range: 28 mm
• Focus lock mechanism adjustable with an Allen key
• Bright 3 W LED transmitted illumination with long lifespan, automated intensity control, and manual adjustment
• Front LCD panel displaying basic illumination parameters
• Field diaphragm for Köhler illumination and improved contrast

Expansion and configuration options
The microscope can be expanded or configured differently using additional accessories, including:
• Dark-field slider mounted in the condenser
• Phase contrast kit
• Simple polarization kit
• 100× plan achromatic water immersion objective
• 60× plan achromatic objective
• 20× plan achromatic objective
• Photographic adapter with 1× magnification factor for cameras with sensors larger than 1/1.7"

Included accessories
• Antistatic dust cover
• Power cable
• Allen keys for adjustment and assembly
• User manual in Polish

Technical specifications
• Catalog number: DO-8601
• Microscope type: Biological, upright
• Applications: Education, universities, laboratories, medicine, veterinary use, research
• Observation technique: Bright field
• Head type: Trinocular
• Light split: 50:50 (eyepieces : camera port)
• Objective nosepiece: Five-position, coded
• Objectives: 4×, 10×, 40×, 100× oil immersion
• Eyepiece magnification: 10×
• Eyepiece field of view: 22 mm
• Interpupillary distance: 47–78 mm
• Eyepiece tube inclination: 30°
• Diopter adjustment: ±5 D on both eyepieces
• Total magnifications: 40×, 100×, 400×, 1000×
• Condenser: Abbe NA 1.25
• Optical class: Plan achromatic
• Light source: LED
• Illumination power: 3 W
• Illumination type: Transmitted
• Optical correction: Infinity
• Stage dimensions: 185 × 142 mm
• Slide movement mechanism: Dual-slide holder with vernier scale
• Stage travel range: 78 × 54 mm
• Focus controls: Coaxial coarse and fine, dual-sided, with tension adjustment
• Fine focus step: 2 µm
• Power supply: AC
• Expansion options: Dark field, phase contrast, polarization
• Warranty period: 60 months