Dark-Field Microscope

Dark-field microscopy utilizes a special condenser to block the central beam, allowing only oblique light to illuminate the sample, resulting in a dark background while making the scattered light at the edges of the sample visible. It is used to observe transparent or low-contrast samples, such as bacteria, cells, and other microscopic structures, revealing contour details in biological and material testing.
Selection
When selecting a dark-field microscope, consider the transparency and thickness of the sample. Match the numerical aperture of the condenser with that of the objective to ensure oblique illumination. Check the intensity and stability of the light source, and select an objective with an appropriate magnification based on the size of the observation target. Ensure that the thickness of the sample slide meets the requirements of the condenser.

Terms

Standards

Instruments

It has the function of switching between light and dark field of view, supports 40X-1600X magnification range, and uses oblique illumination to make the outline of the sample clearly visible. It is suitable for morphological observation of unstained biological samples.

$ 761.00

Optical inspection system and Modular design can be used to upgrade the functions of polarization and dark field observation; coarse fretting coaxial focusing system fretting grid value of 2 μ m, cylindrical roller guide drive to ensure smooth lifting, suitable for different Film thickness workpiece detection.

$ 6012.00

Infinity Optical inspection system, equipped with 5X-50X Bright & Dark Field objective lens, working distance 2.5-9 mm, mildew-proof design and mechanical mobile stage, support polarized observation and camera function.

$ 6496.00

Adopt hinged tri-head, total magnification 40X-1000X, equipped with color difference objective lens and adjustable pupil distance 55-75mm, support phase contrast, dark field and other observation methods, double-decked mechanical stage moving range 75X45mm.

$ 687.00

Equipped with large field of view eyepiece and long working distance flat field color difference objective lens, working distance up to 50mm, with phase contrast device to observe unstained transparent living body, fretting grid value of 2μm to ensure accurate focusing.

$ 2784.00

Equipped with a long working distance flat-field color difference elimination objective lens and four sets of fluorescence filters, it supports phase contrast observation and fluorescence switching, and the fretting grid value is up to 2 μm, which is suitable for clear imagery of living cells and liquid samples.

$ 10207.00

Using long working distance flat field color difference elimination objective lens and insert plate phase contrast condenser lens, working distance 30mm, support double-decked mechanical moving stage, adapt to a variety of culture dishes, easy to dynamic microscopic observation and comfortable operation.

$ 2462.00

Optical inspection system with infinity, equipped with long working distance condenser and working distance 55mm, swirl/spin swing-out condenser system can observe high culture dishes without contamination, compact and high rigidity body to meet vibration protection requirements.

$ 3268.00

Using long working distance objective lens, working distance up to 8.8mm, equipped with pull plate phase contrast condenser, support a variety of culture dish specifications, to meet the needs of cell dynamic observation.

$ 2525.00

Equipped with Sony 5 million pixel CMOS Sensor, supports global shutter and 35fps high-speed imagery, real-time image stitching and depth of field fusion functions to optimize the operation process and improve work efficiency.

$ 3268.00

Optical inspection path design, support multi-channel Observation mode, equipped with long working distance objective (maximum 8.8mm) and pull plate phase contrast condenser, can be adapted to different height culture dish, comfortable operation and compact structure.

$ 3433.00

Equipped with 20 million pixel Sony IMX183 Sensor and global shutter technology, support real-time image stitching and depth of field fusion, USB3.0 interface realizes 15fps high-speed transmission, providing a complete image acquisition to report output workflow.

$ 2139.00

Optical inspection path design, support multi-channel observation system, equipped with long working distance objective (maximum working distance 8.8mm) and swirl/spin condenser, to meet the observation needs of different high culture dishes, comfortable operation.

$ 3735.00

Infinity Optical inspection system and Modular function design can realize polarization and dark field observation; Coarse fretting coaxial focusing system fretting grid value of 2 μ m, guide column lifting device to adapt to different Film thickness workpiece detection needs.

$ 2252.00

Equipped with flat-field color difference-eliminating objective lens and large-field eyepiece, four-hole inward tilting converter positioning accuracy ≤ 0.006mm, Abbe condenser NA1.25, coarse fine-tuning coaxial mechanism fine-tuning grid value 0.002mm, 3W LED cold Illuminant lighting.

$ 877.00