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Oversized diffuse reflection calibration board

Product Series：Large-size Diffuse Reflectance Calibration Board

Versatile Customization

Customizable dimensions, precision grades, and a wide variety of pattern types.

High-Contrast Imaging

Features high black-and-white contrast and low noise, making it ideal for low-light conditions and high-speed camera capture.

Multi-Scenario Compatibility

Compatible with area scan cameras, line scan cameras, telecentric lenses, standard industrial lenses, 3D vision systems, structured light systems, and stereo vision setups.

  • Material Overview
  • customization capability
  • Usage
Material Overview Glass Aluminum
Advantages • High surface flatness and excellent figure accuracy
• Sharp, smooth pattern edges with clear imaging
• Extremely low sensitivity to temperature and humidity variations		 • Moderate coefficient of thermal expansion (CTE); resists deformation at high temperatures for more stable calibration accuracy
• High flatness, suitable for large-format, high-precision vision calibration
• Moisture-proof, oil-resistant, and resistant to mild acids/alkalis; well-suited for industrial workshop environments
• No deformation during long-term storage; ensures high repeatability in recalibration
Disadvantages Conventional optical glass is brittle and prone to edge chipping or fracture upon impact • Greater dimensional shrinkage than glass in low-temperature environments
• Limited to reflective calibration only; cannot be used as a transmissive calibration target
• Not suitable for ultra-thin designs due to warping risk
Coefficient of Thermal Expansion (CTE) 8.5~9.5 × 10⁻⁶/℃ 23.1–24.7 × 10⁻⁶ /℃
Hardness & Scratch Resistance Mohs hardness 5.5–6; susceptible to scratching Vickers hardness HV ≈ 105
Compatible Optical Path Reflective only
Typical Applications High-precision laboratory calibration, microscopic vision Industrial field applications, machine vision, automotive vision, harsh environments

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