Description
Inspect fine dissecting planes and electronic traces with authentic three-dimensional depth using the Evident SZ51 Stereo Zoom Body binocular optical unit. Operating on a precision Greenough stereoscopic optical train, this Japanese-crafted microscope head delivers continuous magnification from 8x up to 40x via a 5:1 zoom ratio (0.8x to 4.0x zoom objectives). It provides a generous, fixed 110 mm working distance, giving you abundant room to manipulate soldering irons, tweezers, and dissecting needles without clashing into objective glass.
The binocular viewing head is inclined at a comfortable 45-degree angle to prevent neck strain during long observation shifts and rotates 360 degrees inside standard 76 mm mounting rings. The included pair of widefield Comfort NCWH10x eyepieces delivers a wide 22 mm Field Number (FN 22) with independent diopter adjustments on both tubes, letting you dial in balance for differing eyesight. Interpupillary distance adjusts smoothly between 52 mm and 76 mm to fit any operator, while parcentric and parfocal optical alignment ensures your specimen stays razor-sharp and centered throughout the entire zoom range.
Key Features of Evident SZ51 Stereo Zoom Body
A professional Japanese-made Greenough binocular stereo microscope head offering a 5:1 zoom ratio and an expansive 110 mm working distance. Features FN 22 widefield eyepieces, 45-degree inclined ocular tubes, and a standard 76 mm pod mounting diameter.
- Continuous 8x to 40x total magnification range powered by a 5:1 zoom drive (0.8x to 4.0x)
- Large 110 mm fixed working distance leaves abundant room for tools and illumination
- Greenough stereoscopic optical architecture produces rich 3D spatial depth
- Pair of NCWH10x / 22 mm high-eyepoint eyepieces with dual independent diopter rings
- Binocular observation tubes inclined at 45 degrees with 360-degree rotation
- Interpupillary distance adjustment spanning a wide 52 mm to 76 mm range
- Fits standard 76 mm focus holder rings across boom, articulated, and table stands
- Weighs an agile 1.3 kg; operates as a completely passive, high-precision optical head
Greenough Optical Depth & Parfocal 5:1 Zoom Mechanics
The Greenough optical design uses two completely separate optical paths tilted inward, replicating natural human binocular vision to provide dramatic stereoscopic relief over biological tissues and micro-mechanical assemblies. Bilateral zoom dials turn with calibrated mechanical resistance, eliminating gear lash. Because the internal achromatic doublet lenses are strictly parfocal, you can zero your focus at 40x, zoom all the way out to 8x for broad orientation, and find your focal plane still dead-on.
Eyepoint Comfort & Modular 76mm Mounting Ring
The 45-degree tube angle keeps your neck in a neutral posture, while the high-eyepoint 10x oculars allow observers to keep their corrective glasses on without suffering edge-of-field vignetting. Sliding diopter rings on both ocular tubes ensure tack-sharp focus for both eyes. With a universal 76 mm outer body diameter and a compact 1.3 kg weight, this optical pod drops straight into boom stands, articulated flexarms, and standard post stands with zero hassle.
- Wide 22 mm Field Number provides exceptional situational awareness across your sample
- Generous 110 mm clearance prevents accidental tool strikes against front glass elements
- Standard 76 mm pod barrel drops right into industry-standard stereomicroscope focus blocks
Evident Olympus Warranty & Package Inclusions
Evident covers the SZ51 optical zoom head with a comprehensive five-year factory warranty against internal optical delamination, lens element coating flaws, and mechanical zoom gear defects. The complete package contains the Evident SZ51 Stereo Zoom Body, a matched pair of Comfort NCWH10x/22mm eyepieces, two rubber eyeguards, and protective objective and ocular storage caps.
Evident Olympus SZ51 Stereo Microscope Zoom Body Specs
| Brand | Evident Olympus |
| Full Model Code / SKU | SZ51-BIN / SZ51-BODY |
| Country of Origin | Japan |
| Microscope Type | Modular Industrial Continuous Zoom Stereoscopic Binocular Microscope Head Unit |
| Optical System Type | Greenough Stereoscopic Optical Architecture providing true three-dimensional depth fields |
| Observation Tube Type | Binocular Head Unit with interpupillary distance adjustment tracking from 52 mm to 76 mm |
| Tube Inclination & Rotation | 45° comfortable inspection tilt posture, 360° rotating head plate design layout |
| Eyepiece / Field of Number | Widefield Comfort NCWH10x / 22 mm high-eyepoint matching lenses with independent bilateral diopter diopter adjustment controls |
| Nosepiece Design | Bilateral continuous manual zoom adjustment dials acting on internal optical pathways |
| Objectives Classification | Achromatic Continuous Stereo Zoom System with parcentric and parfocal tracking boundaries |
| Objectives Magnification Breakdown | Continuous zoom objective scope tracking seamlessly from 0.8x up to 4.0x; zoom ratio precisely 5:1; working distance exactly 110 mm |
| Total Magnification Range | Continuous linear magnification field from 8x up to 40x terminal zoom bounds |
| Focusing Type & Graduation | Dependent on stand mounting block system choice parameters |
| Stage Dimensions & Surface Coating | None (Optical head assembly block component only) |
| Stage Travel Range & Controls | None (Requires compatible focusing mounting block and support stand frame assembly) |
| Condenser Type & Numerical Aperture | None |
| Illumination Transmitted Type | None |
| Illumination Epi-EPI/Reflected | None (Accepts auxiliary LED ring light attachments or external dual gooseneck spot light components) |
| Light Intensity Management | None |
| Camera Port / C-Mount Adapter Split | None (Dedicated stereoscopic optical binocular inspection path) |
| Contrast Methods Capability | Continuous zoom stereoscopic brightfield examination, shallow 3D structure relief tracking |
| Power Supply & Voltage Input | None (Passive optical component mechanism) |
| Physical Dimensions & Net Weight | Head mount diameter fits exactly 76 mm receiver rings; net modular weight exactly 1.3 kg |
| Standard Package Accessories Included | SZ51 binocular zoom body, pair of NCWH10x/22mm eyepieces, twin rubber eye guards, protective storage cap pack |
| Primary Application & Environment | Routine industrial assembly stations, basic educational biology dissection workbenches, commercial textile fiber sorting lines |




















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