Designed for high-efficiency wide-range sample inspection, this robust unit is the GP-205D Large Field Digital Microscope. It delivers an ultra-large field-of-view paired with ultra-long working distance, expanding observable coverage and reducing frequent sample repositioning. A high-precision integrated auto-focus module frees users from tedious manual focus work. It intelligently identifies image blurring induced by sample displacement or working-distance variation, and executes instant refocusing to maintain real-time sharp screen output. Working distance is freely adjustable with rapid, reliable focusing response. The streamlined, user-centered interface lowers the learning curve, enabling effortless operation for all operators. The external USB port enables quick local storage for snapshots and video clips, simplifying inspection-data archiving.
Industrial Inspection: Surface defect detection and high-precision dimensional measurement for PCBs and precision components
Precision Maintenance: Inspection of micro-solder joints and circuits for mobile phones and precision-grade equipment
Expert Appraisal and Evidence Collection: Jewelry and antique identification
Teaching and Research: Microscopic-sample observation in the laboratory; supports photography to preserve experimental data.
Camera module integrated with main unit; real-time 4K 60 fps image output with built-in measurement system for all-in-one observation, measurement and recording.
Precision multi-layer lens optical path, 1-28× wide continuous magnification, delivers clear and smooth images for inspection of tiny precision parts.
Built-in auto-focus module delivers stable, smooth focusing and reduces image shake, eliminating repeated manual-focus operations.
Wide square cast-iron base with dual metal support poles; stable placement without shaking during long-hour inspection.
Blue-black aluminum-alloy body with minimalist vertical design, combining technical aesthetics and premium industrial texture.
Standard ring light provides even glare-free illumination and is compatible with PC software. Ideal for industrial inspection, electronics repair, teaching research and sample analysis.
Digital CCD imaging replaces traditional eyepieces. Supports snapshot capture, video recording and dimensional measurement; captured data can be transmitted to PC for storage, comparison and post-processing.
Electronics Industry: Large PCB boards, FPC flexible boards, wiring harnesses, circuit assemblies; inspect overall scratches, oxidation, casing dents and assembly distortion.
Hardware & Cutting Tools: Sheet-metal and stamping workpieces; detect surface scratches, edge burrs, wear and macroscopic cracks.
LED & Plastic Molding Parts: Whole LED light panels, large plastic casings, injection-molded goods; check surface stains, material shortages, rough edges and foreign debris.
Precision Assemblies: Large connectors, terminal groups and spring components; observe assembly gaps, crimp appearance and complete general dimensional measurement.
Incoming & Shipment QC Archiving: Capture photos for records, document defective parts, export formal quality-inspection reports.
Every GP-205D-4K microscope undergoes standardized factory inspection.
Calibrated with a standard resolution target to verify and record the sharpness of both the center and edge of the field-of-view. It delivers native 3840×2160 4K resolution and smooth real-time imaging at 60 frames per second.
Focusing speed and reset consistency are tested on textured PCB boards and metallic workpieces to ensure fast and stable auto-focus performance.
Under stable laboratory conditions, the same feature is measured 10 consecutive times. The built-in measurement system fully meets industrial dimensional-detection requirements.
Clear imaging is verified across the full 1-28× magnification range at standard working distances, providing an ultra-large observation field-of-view.
Compatible with professional PC-measurement software for data analysis and image storage. Equipped with a standard ring-light source that provides uniform shadow-free illumination, suitable for inspection of various workpiece types.
Auto-focus: Built-in auto-focus enables high-efficiency hands-free inspection. Conventional digital microscopes rely entirely on manual focusing.
4K@60 fps high-speed imaging: 4K@60 fps delivers smooth video without smearing for moving samples. Ordinary models mostly run at 4K@30fps or 1080P and tend to stutter or blur in high-speed scenarios.
1-28× wide field-of-view: Wide magnification range for observing large-area workpieces. General digital microscopes feature small field-of-view and narrow zoom range.
PC-software compatible: Connect to PC for software-based measurement and image saving. Common models have simple interfaces with limited software expandability.
Professional ring illumination: Uniform ring light reduces reflection. Ordinary microscopes use basic light sources, resulting in reflection and shadow issues.
Heavy-duty industrial stand & base: Rigid structure for continuous production-line inspection. General-purpose models adopt lightweight brackets with poor stability.
| Product brand | GAOPIN |
| Product Model | GP-205D-4K |
| Lighting method | D178-32 large-aperture circular light source |
| Magnification | 1-28 × |
| Digital magnification | 1-5 × |
| Working distance | ≥100 mm |
| Lens Type | Wide-angle high-definition integrated lens |
| Lens size | Φ50 mm |
| Resolution | 3840×2160 (4K) |
| Effective Pixels | 8.3-megapixel |
| Display frame rate |
HDMI: 4K@60fps USB3.0: 4K@30fps / 1080P@60fps |
| Focus mode | Switchable: auto-focus, one-click focus, manual-focus |
| Focus Area | Center-focus / Click-to-focus |
| Output method | HDMI + USB3.0 |
| External device | 4K LCD display screen + PC computer |
| Storage method | USB flash drive + PC software storage |
| Measurement function | Built-in measurement system + PC-software-based measurement |
| Operation method | Comes with menu control |
| Control Interface | Mouse / foot switch / keyboard |
| Sensor type | 1/2.8" Color CMOS |
| Exposure | Automatic / Manual |
| Shutter speed | 1/45 s – 1/10000 s |
| White balance | Automatic / Manual / One-click calibration |
| Scanning method | Line-by-line scanning |
| Power Supply | DC 12V |
| Entity | Description |
| Product | GP-205D-4K Large Field Digital Microscope |
| Category | Industrial Digital Microscope, 4K 60fps Auto-Focus Inspection Microscope |
| Core Technologies | 4K high-speed CMOS imaging, auto-focus module, built-in digital measurement system, annular lighting control, PC-software data linkage |
| Key Specs | 3840×2160 resolution, 60 frames per second, 1-28× magnification, large field-of-view, adjustable annular light source, HDMI+USB3.0 output |
| Typical Applications | PCB defect inspection, chip BGA soldering inspection, precision-metal-part QC, mobile-component assembly inspection, electronics-repair, lab observation & measurement |
| Manufacturer | Kunshan Gaopin Precision Instrument Co., Ltd. |
| Manufacturer Location | Kunshan, Jiangsu, China (near Shanghai) |
Optical Lenses: Wipe lenses gently with lens paper and lens cleaner. Never touch optical lenses with bare hands or use ordinary paper towels for cleaning.
Camera Main Unit: Keep oil stains and dust away from the camera. Wipe the outer shell with a soft cloth, avoid liquid splashes, and plug/unplug cables gently.
Support & Work Stage: Clean debris and dust in a timely manner, fasten all screws tightly, avoid collisions to prevent optical-axis deviation.
Light Source: Blow dust off the light window, do not touch lamp beads directly, and turn off the light source when the device is not in use.
Storage Environment: Store in a dry, well-ventilated area away from vibration and humidity. Cover the microscope with a dust cover after powering off.
Power & Measurement Operation: Calibrate the measuring scale regularly. Do not disassemble the device without permission; contact after-sales service if any malfunction occurs.
The unit features 4K@60fps high-speed imaging for smooth ghost-free footage. If you require continuous assembly-line inspection, frequent workpiece movement, or dynamic observation of assembly / welding processes, choose GP-205D directly.
Standard-fitted with circular uniform-LED lighting; uniform illumination across the full field-of-view with no blind spots. Suitable for PCBs, plastic casings, flat electronic components and large-area flat workpieces.
The 1-28× wide-angle field-of-view fits large-size workpieces inside the frame without repeated repositioning, ideal for batch screening of large-area cosmetic defects.
Supports connection to dedicated PC software for real-time length-angle measurement, synchronized photo capture, video recording and data archiving. Priority option for factories requiring formal test-record keeping.
Built-in auto-focus delivers instant sharp focus after workpiece movement and eliminates repetitive manual-focus steps, suitable for long-duration, high-frequency non-stop inspection.
Neutral-packing shipment is available upon request.
GAOPIN microscopes are used by leading enterprises, research institutes, and universities. Our collaborative relationships include:
Jiangsu Bigao Electromechanical Equipment Co., Ltd. – Dimensional & micro-flaw detection for precision-machined parts
Tsinghua University – Teaching, laboratory imaging, and experimental archiving
Shanghai Institute of Optics and Fine Mechanics, CAS – Advanced optical research & optical-component characterization
CATL – Micro-defect inspection for lithium-battery electrodes & cells
DOOV – Mobile-device assembly inspection, screen & component appearance testing
Dabo Medical – Micro-morphology analysis of implant medical devices & biomaterials
Kunshan Gaopin Precision Instrument Co., Ltd., founded in 2011 whose founder has accumulated industry expertise since 2005, is a tech-focused enterprise specialized in design, R&D, sales and after-sales service for industrial microscopes. Our core engineering team brings over ten years of specialized experience, ensuring mature technology and reliable quality. With more than one hundred optical-product models and a global customer base, GAOPIN continuously delivers tailor-made, cost-effective microscopy solutions. We provide fast-response global technical support through online conferences, video-assisted guidance, and remote training sessions. Our manufacturing base is located in Kunshan, Jiangsu Province (close to Shanghai). Both on-site factory inspections and virtual plant tours are available for clients. Feel free to get in touch with us for sample test images captured by this Large Field Digital Microscope to evaluate imaging performance firsthand.
A1: This is a normal optical feature of large-field microscopes. Optimize by cleaning lens dust and oil stains for uniform light transmission, fine-tuning focus for full-area imaging, and enabling depth-of-field stacking to improve edge definition. Avoid unilateral light to prevent edge blurring.
A2: The adjustable ring light reduces specular reflection by adjusting brightness and angle. For high-polish and mirror-finish workpieces, polarizing accessories eliminate glare and spots, clearly displaying tiny defects such as burrs, cracks and texture flaws.
A3: Fluctuations are caused by inconsistent manual point-selection, workpiece offset, unfocused images or invalid calibration. Fix the workpiece, ensure clear manual focusing, unify selection standards and perform accurate recalibration to improve measurement stability and repeatability.
A4: Check the white-balance setting. Perform manual white-balance calibration against a standard white reference surface. Also verify that light-source brightness remains stable.
A5: Check power supply and secure connections of HDMI and USB ports, and confirm the correct signal-output mode. Replace faulty cables if needed. Restart the device to restore normal image-display and capture functions.
Address
Building 2, Shuanglian International Business Center, Huaqiao Town, Kunshan City, China
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