Industrial Lenses for Machine Vision and Imaging Systems

Industrial lenses are critical components in machine vision systems, determining how images are captured, how clear and distortion-free they are, and how accurately defects and features can be analyzed. The right choice of lens impacts the accuracy, repeatability, and reliability of any automated inspection or imaging application.

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Standard Fixed Focal Length Lenses (Prime Lenses)

Fixed focal length lenses have a set field of view (FOV) and working distance, making them ideal for applications where object size and position are consistent.

Applications:

  • Stationary inspections
  • Barcode reading
  • Object identification

Advantages:

  • High optical quality
  • Simple integration
  • Cost-effective

Telecentric Lenses

Telecentric lenses are specialized lenses that eliminate perspective distortion and maintain consistent magnification regardless of the object’s distance within the depth of field.

Applications:

  • Precision dimensional measurement
  • Metrology and calibration
  • Inspection of objects with height variations

Advantages:

  • No parallax error
  • Uniform magnification
  • Ideal for measurement-critical tasks

Types:

  • Object-space telecentric: Parallel rays from object to lens
  • Image-space telecentric: Parallel rays from lens to sensor
  • Bi-telecentric: Telecentric on both ends for maximum accuracy

Macro Lenses

Macro lenses are designed for high magnification close-up imaging. They are suitable for inspecting small components such as electronic chips or surface defects at micron level.

Applications:

  • PCB inspection
  • Semiconductor inspection
  • Fine defect analysis

Advantages:

  • High resolution
  • Excellent detail capture

Fisheye and Wide-Angle Lenses

These lenses offer a much wider FOV than standard lenses. Though they introduce significant distortion, they are useful when capturing a large area is more important than geometric accuracy.

Applications:

  • Warehouse surveillance
  • Rough sorting systems

Advantages:

  • Large area coverage
  • Suitable for low-precision applications

Line Scan Lenses

Line scan lenses are designed for line scan cameras, capturing images one line at a time. These are critical for applications involving continuous materials such as metal sheets, films, and fabrics.

Applications:

  • Web inspection
  • Sheet metal or textile inspection

Advantages:

  • Continuous imaging
  • High-speed capability

Key Factors to Consider When Choosing an Industrial Lens:

  • Sensor Size Compatibility: Ensure the lens supports the size of your image sensor.
  • Focal Length: Determines magnification and FOV.
  • Working Distance: The distance between lens and object.
  • Depth of Field: Affects how much of the object remains in focus.
  • Distortion: Choose low-distortion lenses for accurate measurements.
  • Mount Type: Common mounts include C-Mount, CS-Mount, and F-Mount.
Industrial Lens Selection

Intelgic’s Expertise in Industrial Imaging

At Intelgic, we offer end-to-end industrial imaging solutions, including camera systems, specialized lighting, and lens selection tailored to your inspection needs. Whether it’s selecting a telecentric lens for micron-level precision or a high-speed lens for moving lines, we ensure the right optics for every application.

Contact us to learn how we can help design a precision imaging system that meets your production goals.

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