1. Product Overview
The ABNSZN-71 is a continuous zoom stereomicroscope built on the Greenough optical system. It features a zoom range of 0.67–4.5X with a zoom ratio of 6.7:1. When paired with different eyepieces and auxiliary objectives, it can achieve a total magnification ranging from 2X to 180X, meeting observation requirements from low-magnification panoramic viewing to high-magnification detailed inspection. Its 10° stereoscopic convergence angle and wide-field flat-field eyepieces ensure flat image performance under a large depth of field. The 45° inclined observation head accommodates various operating postures, and the newly added magnification lock function enables precise repositioning of the same magnification.
The SZN-71 is a continuous zoom stereomicroscope adopting the Greenough optical system. It has a zoom range of 0.67–4.5X and a zoom ratio of 6.7:1. Equipped with different eyepieces and auxiliary objectives, it supports a total magnification of 2X–180X to satisfy observation demands spanning low-magnification overviews and high-magnification detail examination. The 10° stereoscopic convergence angle and wide-field flat-field eyepieces guarantee flat imaging at large depth of field. The 45° inclined observation head fits diverse operation postures, and the newly added magnification lock function allows accurate repositioning of a specific magnification. This microscope is widely used in the electronics industry, scientific research and teaching, archaeological identification and other fields.
II. Equipment Specifications
| Category | Parameter Details |
|---|
| Observe the head | 45° inclined viewing head, interpupillary distance: 52‑76 mm, bilateral diopter adjustment (±5 D). Binocular / trinocular / digital viewing heads optional; trinocular head with 20%/80% light‑splitting ratio. |
| eyepiece | PL10X/22mm、PL15X/16mm、PL20X/12.5mm High‑eyepoint flat‑field eyepieces with adjustable diopter |
| Zoom Objective Lens | 0.67‑4.5X continuous zoom, 110 mm working distance, with magnification detent and magnification limit functions. Major magnification scale indications: 0.67X, 0.8X, etc. |
| auxiliary objective lens | 0.5X（Working Distance 177mm）、0.7X（116mm）、1.5X、2X etc., to extend the magnification range. |
| Focusing mechanism | Stand‑mounted coaxial coarse‑fine focusing, travel of 50 mm, fine‑adjustment accuracy of 0.002 mm, with adjustable tension and locking function. |
| Lighting System | LED or halogen lamp with adjustable brightness, suitable for illumination requirements of various samples. |
| Total Magnification | 2X-180X（Compatible with different eyepieces and auxiliary objectives） |
| Working Distance | 110mm（(Standard configuration), reaching approximately 280 mm when fitted with auxiliary objectives. |
III. Functional Features
Precision Magnification Detent: Equipped with detent positions for primary magnifications, enabling accurate repeat positioning at the same magnification and resolving magnification calculation issues during observation. The lightweight and comfortable zoom knob alleviates fatigue during prolonged operation.
Superior Optical Performance: Adopts the Greenough optical system paired with wide-field flat-field eyepieces and a 10° stereo convergence angle, ensuring flat image quality at large depth of field with clear and bright imaging.
Ergonomic Design: 45° inclined viewing head; interpupillary distance adjustable from 52 mm to 76 mm with bilateral diopter adjustment. Zoom knobs are arranged on both sides for convenient and comfortable operation.
Flexible Magnification Expansion: 0.67–4.5X continuous zoom. Compatible with auxiliary objectives of 0.5X / 0.7X / 1.5X / 2X to extend total magnification and meet diverse observation requirements.
Stable Focusing & Illumination: Stand-mounted coaxial coarse and fine focusing mechanism with a travel of 50 mm, featuring adjustable tension and locking function. Supports LED or halogen lighting with adjustable brightness to suit illumination needs of various samples.
Diversified Viewing Head Options: Binocular, trinocular and digital viewing heads are available. The trinocular head features a 20%/80% light splitting ratio. The digital version supports high-definition real-time WIFI output and preview on multiple terminals.
IV. Application Scenarios & Fields
Electronics Industry: PCB/SMT solder‑joint inspection, LCD/IC assembly and verification, mobile‑phone mainboard repair, pin reshaping of electronic components.
Scientific Research & Teaching: Biological dissection observation, research on material micro‑structures, university teaching demonstration, micro‑identification of cultural relics for archaeology.
Industrial Manufacturing: Assembly of precision components, appearance inspection of micro‑structures, mould wear examination, observation of tiny defects on auto‑parts.
Cultural Relic Identification: Micro‑feature identification of calligraphy‑and‑painting works, coins and stamps for authenticity and dating verification.
Other Fields: Textile raw‑material inspection, quality control in food processing, fine examination of printed products, detection of minor flaws on jewellery.
V. Technical Advantages
Distinctive Optical System: Adopts Greenough optical system with wide‑field flat‑field eyepieces and a 10° stereo convergence angle, delivering good image flatness under large depth‑of‑field and outstanding stereoscopic effect.
Precision Magnification Detent: Major magnifications support accurate repeat positioning to improve consistency and accuracy for observation and inspection.
Comfortable & Efficient Operation: 45° inclined viewing head, dual‑side operating knobs and adjustable interpupillary distance relieve fatigue during long‑hour operation and boost working efficiency.
Strong Expansion & Compatibility: Compatible with various auxiliary objectives and viewing heads. The digital version supports Wi‑Fi image transmission to satisfy diversified recording and‑analysis requirements.
Stable, Reliable & Durable: High‑quality optical and mechanical components together with robust focusing mechanism guarantee stability and precision for long‑term operation.
Equipment Appearance Drawing
