The B250 binocular compound microscope is small, but it packs a big punch. The sleek, compact design uses a minimal footprint while providing high-efficiency features like a Siedentopf head, coaxial coarse and fine focus, and a 2-layer mechanical stage. The reversed lens turret maximizes the stage's working space. The microscope is perfect for classroom workstations or labs with limited space.
To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the left ocular tube to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The head can also be rotated 360° to accommodate multiple users. Various eyepieces can be used to increase the overall optical magnification.
The objective turret provides instant access to 4 magnification levels to easily focus in on minute details from 40X to 1000X. Additional 25X eyepieces expand the maximum magnification to 2500X with 6 unique levels. This covers magnifications needed for studying hair follicles, cells, and bacteria. The turret's reversed orientation provides more working room above the stage. This model uses compact-format lenses to reduce the overall profile while maintaining achromatic corrections to improve resolution and color accuracy.
The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level.
The LED sub-stage lighting provides cool, energy-efficient illumination. The light-source is daylight balanced to produce natural colors for imaging. The Abbe light condenser uses a simple spiral-control for height adjustment, and an iris diaphragm to optimize contrast and depth-of-field.
Monitor and capture photos and videos with the included 1MP digital eyepiece camera. The compact, lightweight camera can be used in place of an eyepiece to watch live images, and to record photos or videos on your computer. This ability to view microscopic images on your computer reduces eye-strain, and allows groups of people to view images at the same time. Our professional software for Windows provides a wide assortment of capture and photo-editing functions including color correction, time-lapse capture, image stitching, and a full complement of measuring tools. A lite version of our software is available for Mac and Linux with essential functionality for capturing photos and videos.
Specifications
Optical System | Finite-conjugate |
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Head | Binocular, 30° incline, 360° rotatable |
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Interpupillary Adjustment | Siedentopf, 48-75mm |
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Ocular Diameter | 23mm |
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Eyepieces | 10X, 25X |
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Objective Lenses | Compact, not DIN standard |
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Objective Mounting Thread | RMS 20.32mm |
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Objective Turret | quadruple, reversed |
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Focusing System | Coaxial coarse and fine focus |
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Focus Range | 30mm |
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Division of Fine Focus | 0.002mm |
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Stage Design | Double-layer with caliper |
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Stage Dimensions | 115mm x 109mm |
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X-Y Translation Range | 55mm x 18mm |
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Transmitted Illumination | Variable-intensity LED |
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Condenser | NA1.25 Abbe condenser with iris diaphragm |
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Sub-stage Condenser-holder | spiral adjustment |
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Power | 100-240VAC 50/60Hz wide-band |
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Objective Lenses
Magnification | Corrections | NA | Immersion Medium | Cover-glass Thickness |
4X | achromatic | 0.10 | | 0.17mm |
10X | achromatic | 0.25 | | 0.17mm |
40X | achromatic | 0.65 | | 0.17mm |
100X | achromatic | 1.25 | oil | 0.17mm |
Camera Specifications |
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Sensor Type | CMOS |
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Sensor Optical Format | 1/3" |
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Active Pixels | 1M (1280 x 1024) |
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Pixel Size | 3.6µm x 3.6µm |
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Active Sensor Area | 4.61mm x 3.69mm |
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Shutter | electronic rolling shutter |
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Spectral Response | 380-650nm with IR-cut filter |
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Capture Resolution and Maximum Framerate | 7.5fps @ 1280x1024 12.5fps @ 1024x768 12.5fps @ 800x600 |
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Connectivity | USB 2.0 |
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Power | 5VDC over USB |
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Software
OS Requirements | Windows (32/64 bit) XP/Vista/7/8/10, Mac OS 10.8+, Linux kernel 3.13+ |
Hardware Requirements | Intel Core2 2.8GHz or comparable processor, 4GB RAM |
Features | Windows Version | Live video preview | Captures still images and video | Time-lapse capture | Exposure and white-balance controls | Image processing | Measurement tools, including lines, arcs, polygons | Segmentation and counting tools | Image-stitching, extended depth-of-field, HDR | Mac/Linux Versions | Live video preview | Captures still images and video | Exposure control | Color adjustment | Measurement tools, including lines, arcs, polygons | |
Packing List:
One binocular microscopeFour objective lenses: 4X, 10X, 40X and 100XOne pair 10X eyepiecesOne pair 25X eyepiecesOne dust coverOne sample immersion oilOne blue color filterOne digital eyepiece cameraTwo sizing adaptersOne mini USB to USB type A cable