PaPaLaB’s 2D colorimeters utilize a camera method with a sensitivity that is exceedingly close to that of the human eye.
By specifying the range of measurement, it is possible to reduce the margin of error by the inspector and save inspection and image data. Therefore, they can also be used for quality assurance after shipping.

Quantifying Color Shifts Between Dissimilar Materials

With the popularity of eco-friendly cars, the assembly of cars using a combination of various materials has become common.
With PaPaLaB’s 2D colorimeters, inspection of color shifts between dissimilar materials can be simplified.

Quantifying Flip-flop Phenomena

By graphing the luminance, which affects the visual impression of the vehicle, measurement is possible.

STEP 1: Photograph Painted Portions of the Car Body that You Would Like to Measure

Photograph the Vehicle You Would Like to Inspect

Using a 2D colorimeter, photograph the painted portion of the vehicle you would like to inspect.
Because photography is possible over a wide range without any contact, quantifying flip-flop phenomena is also possible. By performing multi-angle photography using flat lighting, paint jobs using aluminum flakes and pearl colors can also be represented by evaluation functions that are close to the colors and textures sensed by the human eye.

STEP 2: Measurement Settings

The Range of Measurement Can Be Selected Freely

Specify the range of measurement for the image photographed in STEP 1.

For example…
① Inspection of color shifts between the bumper and the fender
② Inspection of color shifts between the fender and the front door
③ Inspection of uneven coloring and flip-flop on the front door
④ Tighten the range of measurement
⑤ Widen the range of measurement

STEP 3: Measure Color Profiles and Color Distribution Coincidence

Inspect Colors, Uneven Coloring, and Texture Through Graphs and Numerical Values

Display a graph containing the ⊿E variance and Lab values for the range of measurement specified in STEP 2.
By viewing the color difference (⊿E) from the starting point, differences in coloring for different materials can be verified and inspected.
When comparing colors that contain textures, such as metallicity, measurement is possible through “color distribution coincidence,” our company’s unique parameter.


It Is Possible to Mount Them on Robotic Arms on the Production Line.

It is possible to inspect all products by implementing 2D colorimeters into the production line.
With the RC-300, 30 photographs can be taken in 1 second, allowing for inspection of all products over a wide range through integration into the machine control of robotic arms.


Paint Color Difference Inspection Device

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