Magus Pol D850 Polarizing Digital Microscope (83042)

The MAGUS Pol 850 Polarizing Microscope is designed for work in both transmitted and reflected light. It supports polarization and brightfield observation methods and is intended for studying anisotropic specimens in biology, geology, and polymer research, as well as opaque polished sections up to 15 mm thick with one polished surface. It is a practical tool for specialists in medicine, forensics, mineralogy, crystallography, and petrography.

Digital camera

The MAGUS CBF70 is a professional scientific camera designed for microscope use with 4×, 10×, 20×, and 40× objectives. It enables photo capture, video recording, live demonstrations, external display output, and linear and angular measurements (software calibration is required for accurate measurements). The camera is recommended primarily for brightfield work.

The camera offers five selectable resolution and frame-rate modes, allowing the user to choose the best balance between detail and speed:

• 5280 × 3954 (17 fps)

• 3952 × 3952 (17 fps)

• 2640 × 1976 (56 fps)

• 1760 × 1316 (67 fps)

• 584 × 438 (192 fps)

High-resolution modes are suited to photography, producing clear, vibrant, highly detailed images. Higher frame-rate modes are ideal for smooth video capture and for recording subtle movements or fast processes without stutter or delay. For the most accurate image scale and minimal distortion, a 1× adapter is recommended.

The camera uses a SONY Exmor 4/3-inch color back-illuminated CMOS sensor, delivering bright images even in low ambient light. The larger sensor area helps produce deeper color reproduction and improved image clarity.

Optical system

The microscope features infinity-corrected, strain-free optics, producing authentic images with strong contrast, high detail, and minimal spurious reflections. Objectives are mounted in a revolving nosepiece with slots centered to the optical axis. The nosepiece has five positions; four objectives are supplied, and one additional objective may be added to extend magnification within the microscope’s range. The objectives are designed for examining specimens without cover slips.

A trinocular head allows a digital camera to be installed in the trinocular tube. Beam splitting is selectable between 100:0 and 0:100, directing all light either to the camera or to the eyepiece tubes. A diopter adjustment ring on the left eyepiece tube compensates for differences between the user’s eyes to achieve the sharpest possible image.

Illumination and polarization

Both transmitted and reflected light paths use 30 W halogen bulbs. Their brightness is sufficient for clear viewing with each objective, and the warm light spectrum remains comfortable during prolonged sessions. A Köhler illumination setup improves resolution and helps eliminate field artifacts and edge darkening. Color filters support accurate color adjustment when working in reflected light.

Polarization is available in both transmitted and reflected light. Polarized observation begins by introducing the analyzer into the optical path. The polarization angle is adjusted by rotating the analyzer and polarizer relative to one another. Compensators, installed in a dedicated slot in the intermediate attachment, enhance contrast when needed. The same intermediate unit includes a Bertrand lens for conoscopic examinations.

Stage and focusing system

The microscope includes a rotatable stage. Rotating the stage changes how the specimen refracts light under polarization, supporting detailed analysis. The stage includes a scale for angle measurement with up to 0.1° accuracy, and it can be centered relative to the optical axis to achieve the brightest and clearest image.

Coarse and fine focusing knobs are positioned at the bottom of the stand to support a relaxed working posture with hands resting on the table. The coarse focus includes tension adjustment and a locking mechanism, while fine focus provides smooth, precise specimen movement.

Accessories and expandability

To extend the system’s capabilities, compatible accessories are available within the MAGUS line, including eyepieces, objectives, calibration slides, and additional digital cameras.

Key features of the microscope

• Operation in transmitted and reflected light, both polarized and non-polarized

• Trinocular head with camera tube and 100:0 / 0:100 beam splitting

• Strain-free plan achromatic objectives for clear, artifact-reduced imaging with minimal internal reflections

• 30 W halogen illumination with an eye-friendly spectrum

• Rotating stage, polarizer, and analyzer with angle markings, plus Bertrand lens and compensators

• Nosepiece slots and stage are centered to the optical axis

• Compatibility with a wide range of optional accessories

Key features of the camera

• Five resolution and frame-rate modes for flexible photo and video capture

• USB 3.0 interface for fast data transfer

• Large SONY Exmor color sensor for bright, clear images in low-light conditions

• Quick setup: install the included software and the camera is ready to use

• Supports live display on an external screen for easier observation and group demonstrations

Kit contents

• MAGUS CBF70 digital camera with USB cable, installation disc with drivers and software, user manual, and warranty card

• Base with power input, transmitted light source and condenser, focusing mechanism, stage, and revolving nosepiece

• Reflected light illuminator with lamphouse

• Trinocular head

• Intermediate tube with Bertrand lens, analyzer, and compensator slot

• Compensators: λ compensator, λ/4 compensator, quartz wedge

• Infinity plan achromatic objectives:

  • PL 5×/0.12, WD 26.1 mm

  • PL 10×/0.25, WD 5.0 mm

  • PL 40×/0.6 (spring-loaded), WD 3.98 mm

  • PL 60×/0.7 (spring-loaded), WD 2.03 mm

• Eyepieces 10×/20 mm (pair)

• 10×/20 mm eyepiece with scale (0.1 mm scale value)

• 1× C-mount adapter

• Hex key wrench

• Power cord

• Dust cover

• User manual and warranty card

Available on request

• 16×/11 mm eyepieces (pair)

• 20×/11 mm eyepieces (pair)

• Optional objectives: PL 2.5×/0.07, PL 50×/0.7 (spring-loaded), PL 80×/0.8 (spring-loaded), PL 100×/0.85 (spring-loaded)

• Mechanical stage attachment

• Calibration slide

Technical specifications (microscope)

• Product ID: 83042

• Brand: MAGUS

• Warranty: 5 years

• Package size: 44 × 42 × 67 cm

• Shipping weight: 12.1 kg

• Type: biological, light/optical, digital

• Head: trinocular, Siedentopf, 30° inclination

• Standard magnification range: 50×–600×

• Optional magnification range: 25×–2000×

• Eyepiece tube diameter: 23.2 mm

• Eyepieces: 10×/20; 10×/20 with scale (optional 16×/11, 20×/11)

• Objectives: infinity plan achromatic, strain-free; designed for specimens without cover slips; parfocal height 45 mm

• Revolving nosepiece: 5-position, centered

• Working distances: 26.1 mm (5×), 5.0 mm (10×), 3.98 mm (40×), 2.03 mm (60×)

• Stage: Ø150 mm, 360° rotatable, centered; vernier for 0.1° readings

• Condenser: Abbe NA 1.25 with adjustable aperture diaphragm and swivel lens

• Diaphragms: adjustable aperture diaphragm and adjustable iris field diaphragm

• Focus: coaxial coarse (with lock and tension adjustment) and fine focus, 0.002 mm resolution

• Illumination: halogen, brightness adjustable; reflected and transmitted light 12 V/30 W

• Reflected-light filters: matt, yellow, green, blue

• Operating temperature range: +5 °C to +35 °C

• Polarizer: transmitted light with angle marks and 360° rotation; reflected-light polarizer removable

• Intermediate tube: built-in analyzer with 0–360° rotation and vernier scale; Bertrand lens; compensator slot

• Compensators: λ, λ/4, quartz wedge

• Application: laboratory and medical

• Observation methods: brightfield and polarization

• Supplied protective accessory: dust cover

Technical specifications (camera)

• Sensor: SONY Exmor CMOS, color

• Maximum resolution: 5280 × 3954

• Sensor size: 4/3 inch (17.4 × 13.0 mm)

• Pixel size: 3.3 × 3.3 µm

• Exposure time: 0.1 ms to 15 s

• Frame rates:

  • 17 fps at 5280 × 3954

  • 17 fps at 3952 × 3952

  • 56 fps at 2640 × 1976

  • 67 fps at 1760 × 1316

  • 192 fps at 584 × 438

• Installation position: trinocular tube or eyepiece tube (replacing an eyepiece)

• Image formats: JPG, BMP, PNG, TIF

• Video output formats: WMV, AVI, H.264 (Windows 8+), H.265 (Windows 10+)

• Spectral range: 380–650 nm with built-in IR filter

• Shutter type: electronic rolling shutter

• White balance and exposure: automatic or manual

• Interface: USB 3.0 (5 Gb/s)

• Software: MAGUS View

• System requirements: Windows 8/10/11, Mac OS X, Linux; up to 2.8 GHz Intel Core 2 or higher; minimum 2 GB RAM; USB 3.0 port; CD-ROM; 17-inch or larger display

• Mount: C-mount

• Camera body: solid aluminum

• Power: 5 V from computer USB port; optional 12 V/3 A adapter for Peltier element

• Operating conditions: -10 °C to +50 °C, humidity 30%–80%