OMAX 50X-787.5X 18MP USB3.0 Trinocular Ore Petrographic Polarizing Microscope with Bertrand Lens

OMAX 50X-787.5X 18MP USB3.0 Trinocular Ore Petrographic Polarizing Microscope with Bertrand Lens

SKU: K83PTR-C180U3

Regular price $4,473.99
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OMAX 50X-787.5X 18MP USB3.0 Trinocular Ore Petrographic Polarizing Microscope with Bertrand Lens
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This advanced trinocular polarizing microscope system is an advanced microscope system specially designed for petrographic applications and includes a super speed 18MP USB 3.0 digital microscope camera. It has two light sources: a 20W halogen Kohler transmitted light and a 50W EPI reflected halogen illuminator. The trinocular head inclines at 45-degrees and is 360-degree rotatable. The microscope assembly includes a bertrand lens for special polarized light analysis and a built in 1.25x auxiliary objective in the light path, further increasing the power of the microscope. The microscope offers five magnification settings with its included objectives and eyepieces, which are 50X, 125X, 312.5X, 500X, and 787.5X. Each of the four objective mounts offers centering adjustment. The circular stage is rotatable and accurate to 0.1 degrees using the vernier scale. The kit also includes many accessories for analysis and operation, such as a blue light filter for transmitted light, a green light filter for reflected light, three extra eyepieces with various reticles for counting, centering, or measurement, a mechanical stage attachment, and polarizing compensators for use with the Bertrand lens.

The digital camera captures still microscope images, streams live video preview to your computer, and is compatible with Windows, Mac OS X, and Linux (see below for version information). The 0.5X reduction lens included gives your computer screen a wider field of view. The user-friendly software for Windows offers advanced features including Stitching, EDF (Extended Depth of Focus), video recording, and measurement functions. Live video and still image capture can be set in different resolutions simultaneously.

This is a perfect microscopy system for mineral applications. It is an ideal instrument for those in mineralogy and/or geology areas.


  • Super speed 18MP USB 3.0 digital camera includes software
  • Capable of transmitted polarized light and reflected polarized light
  • Revolving quadruple nosepiece, with center adjustable objective mounts
  • Built-in 1.25X auxiliary objective for increased magnification
  • Polarizer, analyzer, Bertrand lens, and compensator plates included


  • Total magnification: 50X - 125X - 312.5X - 500X - 787.5X
  • Head: Trinocular, 45 ° inclined 360° rotatable, interpupillary adjustable, diopter rings on both ocular tubes
  • Eyepieces: 10X (a pair of regular, and one with reticles, one with crosshair, and one with grids)
  • Nosepieces: Quadruple, objective center adjustable
  • Objectives: DIN strain free achromatic
    - 4X/0.10 160/-
    - 10X/0.25 160/-
    - 25X/0.40 160/0.17
    - 40X/0.65 160/0.17(s)
    - 63X/0.85 160/0.17(s)
    - Plan 25X/0.40 160/0
    - Plan 40X/0.65 160/0 (s)
    - Plan 63X/0.85 160/0 (s)
  • Condenser: NA1.30 Abbe Condenser with iris diaphragm, condenser center adjustable, top lens can be swing out of the light path
  • Stage:
    - Circular, diameter 160 mm
    - Rotatable, with 360° angle graduations and a vernier scale, accurate to 0.1°
    Mechanical specimen holder: range 32mm x 27mm, removable
  • Polarizer
    - For transmitted light: mounted beneath the condenser, rotatable with 360° angle graduations
    - For reflected light: fixed in the tube of EPI light path
  • Analyzer: Slide in and out of the light path, 0°- 90° graduation
  • Bertrand lens: Switch in and out of the light path, center adjustable, focus adjustable
  • Compensators
    - Quarter-wave plate (1/4 λ plate)
    - Tint plate (1 λ plate)
    - Q
    uartz wedge (Q plate)
  • Focus adjustment: Coaxial coarse and fine adjusting knobs on both sides
  • Illumination
    - Transmitted light: Halogen lamp, brightness adjustable, 12V/20W
    - Reflected light: Halogen lamp, brightness adjustable, 12V/50W
  • Filters
    - Blue (for transmitted light)
    - Green (for reflected light)
  • Power supply: 90V - 265V, 50Hz/60Hz
  • Digital camera:
    - True color 4912x3684 pixels (18M pixels)
    - Super speed USB 3.0 connection
    - 0.5X reduction lens to get larger field of view
    - 0.01 mm calibration slide: 1mm/100 division
    - Frame speed: 5.6fps at 4912x3684, 18.1fps at 2456x1842, 32.2fps at 1228x922
    - Software compatible with Windows, Mac OS X and Linux operating systems
    - Capturing microscope images, recording live video, measuring lengths, angles, areas, editing images
    - USB 3.0 cable included
  • Dimension: 15 in x 8 in x 20-1/2 in (38 x 20 x 52 cm)
  • Net weight: 21.8 lb (9.9 kg)


Specification (software)

Please check the chart below for computer operating system compatibility

Compatible Table

Packing List:

  • 1 Trinocular microscope head
  • 1 Microscope frame with base
  • 5 Eyepieces: 2 WF10X/18, 1 10X with grids, 1 10X with crosshair, 1 10X with reticles,
  • 8 Objectives: 4X, 10X, 25X, 40X(s), 63X(s) and Plan 25X, 40X(s), 63X(s)
  • EPI illumination assembly
  • 3 Compensators: 1 quarter-wave plate (1/4 λ plate), 1 tint plate (1 λ plate), and 1 quartz wedge (Q plate)
  • 1 Mechanical specimen holder
  • 1 C-mount attachment
  • 1 Slide/specimen holder
  • 1 Specimen plate
  • 0.01mm calibration slide
  • Color filters: blue and cyan
  • Two Allen keys for objective center adjustment
  • Extra halogen bulbs
  • 18MP USB 3.0 digital camera
  • 0.5X reduction lens
  • 1 CD including driver, software and user's instruction
  • 0.01mm calibration slide (stage micrometer)
  • USB 3.0 cable


Shipping & Returns


We provide complimentary UPS ground shipping for online orders exceeding $99 to all destinations within the Continental U.S.A. Most items are drop-shipped from one of our suppliers. Due to the highly configurable nature of microscopes and our vast product portfolio, lead times can vary. Should you need expedited shipping, kindly reach out to us for a personalized quote and to ensure your availability.

We welcome international orders on a case-by-case basis. Buyers are accountable for any international duties, taxes, brokerage, or import fees that may be incurred. We encourage customers to reach out to us at prior to purchase, to ensure the microscope will meet their needs and expectations.


For most items, we accept returns within 14 days of purchase, with the buyer responsible for covering all shipping charges. Please refer to our Full Returns Policy for further details. (Note: Many returns stem from purchasing the wrong product for a specific application. To prevent this, we recommend consulting a Microscope Central expert before making your purchase.

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