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MZDH0850 6.7X High-Resolution Parfocal Zoom Lens for Machine Vision & Industrial Inspection

  • The MTO MZDH0850 series is a modular, high-performance parfocal zoom lens designed for high-precision industrial inspection, automated vision systems, and semiconductor QA. Featuring an infinity-corrected optical system, a 6.7:1 zoom ratio, and cross-brand metallurgical objective compatibility, it delivers distortion-free, high-contrast imaging under the most demanding production environments.

    • Zoom Range: 0.75X – 5.0X (Continuous)

    • Optical Options: Standard, Coaxial Illumination (MZDH0850C), and Motorized Zoom models available.

    • Applications: Semiconductor wafer inspection, PCB assembly, LCD/LED testing, and precision metrology.

Additional information

Optical Mag.

0.75X~5X

Zoom Ratio

6.7:1

Mounting Size

φ45mm

Working Distance

82mm

Product  Details

Engineering Advantages of the MTO Parfocal Zoom Lens:

  • True Parfocal Precision (Zero Re-focusing): Time is money on high-throughput automated inspection lines. The MZDH0850 maintains perfect focus throughout the entire 6.7:1 zoom range. Set the focus once, zoom freely, and eliminate software re-focusing delays.

  • Coaxial Illumination for Zero-Glare Inspection: Highly reflective surfaces like polished metals, silicon wafers, and glass screens often cause blinding glare. The MZDH0850C integrated coaxial light path delivers perfectly uniform, shadow-free illumination right through the lens.

  • Infinite Optical System & Brand Compatibility: Designed with flexibility in mind. Our infinity-corrected system allows you to directly mount high-power metallurgical objectives from world-class brands (Nikon, Olympus, Mitutoyo) to instantly upgrade your magnification and resolution.

  • Ultra-Flexible Working Distance (WD): Adaptation is seamless. By swapping optional auxiliary objectives (0.3X, 0.5X, 0.75X, 1.5X, 2.0X), you can configure a working distance from 16mm to 293mm to accommodate robotic arms, pick-and-place clearance, or complex chassis constraints.

MZDH0850---Exceptional Clarity for Precise Imaging

Flexible Configurations Tailored to Your Needs

  • The MZDH0850 series offers multiple configurations to cater to your specific requirements:

    • Repeatable Accuracy (MZDH0850-D): Equipped with built-in detents at integer magnifications, perfect for automated 2D/3D inspection routines.
    • MZDH0850C: Equipped with coaxial illumination for enhanced contrast, especially useful for reflective surfaces like LCDs.MTO coaxial illumination parfocal zoom lens for semiconductor inspection
    • Anti-Glare Polarizing (MZDH0850C-PL): Features an integrated polarizing lens that vastly improves image contrast and eliminates blinding glare on metallic surfaces.
    • Rapid Focus Fine-Adjustment (MZDH0850C-MA): Built-in fine-tuning interface with a 3mm range for immediate focal plane adjustment on stepped workpieces.
    • Space-Saving 180° Transition (MZDH0850C-SA): Innovative 180-degree light path redirection, designed specifically for tight integration inside narrow industrial chassis.
    • Automation Ready (MZDH0850-AZ): Supports external drive circuit and servo motor integration for programmatic, motorized magnification switching.

New popular combination: matched with 4-hole turret for Metallographic objectives.

MZDH0850C with turrents for Metallographic objectives

It has advantages on the applications as below:

  • Semiconductor Wafer Defect Inspection: Detection of wafer surface scratches and particle contamination (resolution up to 0.1μm) Verification of circuit etching precision (with 50X metallographic objective)
  • High-Precision Display Panel Quality Control Imaging of LCD/LED pixel structures (supports polarized light mode) Localization of micro-cracks in glass substrates (coaxial light eliminates glare interference)
  • Microelectronic Packaging Inspection 3D topography analysis of BGA solder joints (rapid switching between 5X-20X objectives via 4-hole turret) Detection of solder bridging on microcircuit boards (cold light source prevents thermal deformation)
  • Metal Material Analysis Observation of alloy microstructures (optional 100X oil immersion objective) Interface analysis of non-metallic composite materials (infinity system compatible with polarization accessories)
  • Industrial Digital Inspection Real-time CCD/CMOS imaging (via 360° rotatable adapter) Compatibility with automated inspection systems (servo motor-controlled zoom)

Suggested Applications

1. Electronics and Semiconductor Manufacturing

  • SMD & PCB Assembly Electronics: Used in solder joint cross-section analysis, components alignment checks, and high-density reflow auditing.
  • Semiconductor & IC Packaging: Ideal for wire bonding evaluation, silicon wafer pattern verification, and die attach inspection.

2. LCD and LED Display Inspection

  • Surface Defect Detection: The coaxial illumination system ensures uniform lighting, making it perfect for inspecting the surface quality of LCD and LED displays, detecting defects such as dead pixels or scratches.
  • Quality Control: Used in the manufacturing process to monitor the quality of displays at various stages, ensuring consistency and adherence to specifications.

3. Optical Component Inspection

  • Lens Manufacturing: The MZDH0850 series is ideal for inspecting lenses and optical fibers. It allows manufacturers to check for surface imperfections, coating quality, and alignment in optical components.
  • Fiber Optic Testing: Useful for inspecting the end faces of fiber optics and ensuring the accuracy of fiber alignment in precision optical systems.

4. Materials Science and Research

  • Microstructure Analysis: The high resolution of this system makes it a great choice for analyzing the microstructure of materials like metals, ceramics, and polymers under various magnifications.
  • Failure Analysis: The system is used in laboratories to conduct failure analysis on materials and components, particularly when analyzing cracks, fractures, or surface degradation.

5. Medical Device Manufacturing 

  • Component Inspection: Perfect for inspecting small, intricate parts used in the production of medical devices, including those in the diagnostic or imaging fields.
  • Precision Measurement: Ensures high precision in measuring and inspecting small medical components, verifying dimensions and tolerances for compliance with standards.

6. Automated Machine Vision Integration

  • Installed inside robotic sorting arms, AOI (Automated Optical Inspection) machines, and custom lab testing rigs.

Compliance, Commercial Terms & Customization

  • Quality Standards: Fully compliant with CE and manufactured under strict ISO9001 quality management systems.
  • Standard Lead Time: Ships within 7 to 15 business days for standard batch orders; expedited courier options available.
  • Warranty Policy: Backed by a comprehensive 12-month factory warranty with direct online engineering troubleshooting support.
  • Flexible OEM/ODM Customization: We accept custom modifications including dedicated camera adapters (0.3X/0.4X/0.5X/0.67X/1X/1.5X/2X), built-in custom reticles/micrometers, specific mechanical dimensions, and automated motorized configurations.
  • Customization MOQ: Low Minimum Order Quantity starting at only 10 units for minor mechanical or optical adjustments.

FAQ (Frequently Asked Questions)

A: We highly recommend the MZDH0850C-PL model. Reflective objects like metal shields, gold-plated PCBs, or LCD glass create severe glare under normal lighting. The MZDH0850C-PL features coaxial illumination combined with an integrated polarizing lens. By adjusting the polarizer, you can block glare, eliminate blinding hot spots, and drastically enhance image contrast to see microscopic surface details clearly.

A: The selection follows a simple logic based on your required Working Distance (WD) and Field of View (FOV). If your robotic assembly line requires a large clearance space, choose the 0.3X or 0.5X objective lens to achieve a working distance of 293mm or 175mm. If you need extreme high-power magnification and can accept a tighter space, choose the 2X or 5X lens. Match this with a CCD adapter size (e.g., 0.5X or 1X) that fits your camera sensor to prevent vignetting (dark corners on the screen).

A: The maximum magnification of the MZDH0850 series is 45X with the standard zoom objective lens and CCD adaptors. However, the system supports various objective lenses with different magnifications, allowing you to customize it for your specific needs.

A: Yes, certain models like the MZDH0850-AF offer motorized zoom with stepper motors for precise magnification adjustments. This ensures accurate and repeatable zoom changes, particularly useful for automated processes.

A: The working distance varies depending on the objective lens used. For example, with the 0.75X objective lens, the working distance is 117mm, providing a good balance between magnification and depth of field.

A: Yes, the MZDH0850 series supports a variety of CCD and CMOS cameras, and the system includes adapters for different camera interfaces. You can easily integrate a camera to capture high-quality images or videos for documentation or analysis. However, you need to learn how to adjust the focal length and centre between the zoom lenses and the camera to ensure parfocal.

If you have interest to get the details, please contact us.

A: Absolutely. The MZDH0850 series features coaxial illumination, which provides uniform lighting even on reflective surfaces like metals and wafer. This ensures clear, high-contrast images without the need for additional external lighting.

A: Yes, the MZDH0850 series offers customizable options including a range of objective lenses, CCD adaptors, lighting systems, and camera interfaces. We can help you configure the system to suit your unique application needs.

A: The MZDH0850 is highly beneficial for industries such as electronics, semiconductors, optical components manufacturing, material science, and medical device production. Its versatility and high-resolution capabilities make it suitable for a wide range of precision inspection and measurement tasks.

A: The MZDH0850 is designed for easy installation and setup. Its compact design and modular components simplify the integration process, and we provide support for installation and calibration if needed.

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