Application Solutions

Warpage and Flatness

When looking for the best way to measure warpage and flatness, it is important to consider the type of measurement system to use and the installation environment. Selecting equipment that doesn't adequately meet your needs can lead to insufficient precision and increased man-hours during production. This site is designed to help those looking for a warpage and flatness measurement system discover the best way to do so with confidence.

How to Measure Warpage and Flatness

Find the best measurement method and the right equipment to measure "Warpage and Flatness".

Measurement of warpage/flatness using multiple sensor heads

Example Application: Flatness measurement of chassis

Optimal measurement system

Optimal measurement systemLaser Displacement Sensor

Warpage and Flatness are measured by calculating the height difference obtained by multiple sensor heads at different locations on the part.

KEY POINTS
  • Measurement errors caused by vibrations from when an individual sensor head is moved to the different measurement locations do not occur.
  • Because the sensor heads are not moved, inspection cycle times are fast.
  • No mechanism for moving the sensor head is required.
  • Multi-color confocal method
    Linearrity:From ±0.2μm
    Confocal Displacement sensor

    CL Series

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  • Spectral Interference Method
    Ultra-high resolution of 1 nm
    2 mm microprocess sensor head

    SI Series

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Measurement of warpage/flatness using one sensor head (1D laser displacement sensor)

Example Application: Warpage measurement of PCBs

Optimal measurement system

Optimal measurement systemLaser Displacement Sensor

The target or sensor must be moved, warpage and flatness is calculated by the data collected at each measurement location.

KEY POINTS
  • Only one head is used, so costs can be reduced.
  • Vibration from when the sensor heads are moved causes measurement errors.
  • A mechanism for moving the sensor head is required.
  • Multi-color confocal method
    Linearrity:From ±0.2μm
    Confocal Displacement sensor

    CL Series

    View Catalog

  • Spectral Interference Method
    Ultra-high resolution of 1 nm
    2 mm microprocess sensor head

    SI Series

    View Catalog

Measurement of warpage/flatness using one sensor head (2D laser displacement sensor)

Example Application: Warpage measurement of material edges

Optimal measurement system

Optimal measurement system2D Laser Displacement Sensor

A laser line is reflected from the target surface, warpage is measured by evaluating the height differences on the reflected profile.

A
Peak
B
Warpage amount
C
Bottom
KEY POINTS

Warpage can be measured without moving the sensor head.

  • 2D Triangulation Method.
    In-line Multi-point measurement.
    World's Fastest sampling rate at 64,000 images/sec.

    LJ-X Series

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  • Multi-color confocal method
    Linearrity:From ±0.2μm
    Confocal Displacement sensor

    CL Series

    View Catalog

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