Visualizes UV light amount distribution by color density.

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One side of the base film has a UV light sensitive layer, with the opposite side having a white-colored layer. The light sensitive layer changes color according to the amount of UV light it receives, so the amount of light distributed on the exposed surface is easily seen by observing a light sensitive layer and white-colored layer are attached to the base. Since the color density of the white-colored layer corresponds to the amount of UV light received, the light amount distribution on the light receiving surface can easily be investigated.



The color forming material in the microcapsules reacts to the UV light and changes color.


How to use


After cutting UVSCALE to the required shape (length), place it on the location that you want to measure.

Operate the equipment or device, and expose UVSCALE to UV light.
* The side of UVSCALE with matt surface should be exposed.

The UVSCALE changes color in accordance with the amount of light.

Remove UVSCALE, and determine the distribution of light by observing the color distribution.
* Use the matte side for observing.


Reducing light film

In order to cover a range of accumulated light amount, we offer the product in three types.


Standard color chart

[High pressure mercury lamp]
The following are color characteristics generated by a high-pressure mercury lamp. However, please note that these color characteristics are values generated by using FUJIFILM light source and devices, so there may be differences in color density for a given amount of light due to difference and variations in individual lamps or environment.

  • *Each density is the value measured by FUJIFILM. It is not a warranty of density level.
  • **The amounts of UV-light are values using a 365nm UV illuminometer.
  • ***The solid lines on the graph show the recommended measurement range. The broken lines represent values that are not as precise as the solid lines and should be used as a reference only.
  • *4Standard Color Samples show the density range for visual evaluation.


Type Product size Thickness Classification
Sheet type
UVSCALE L 270 mm × 200 mm
(5 sheets)
0.1 mm Mono sheet type
UVSCALE M 0.1 mm × 2 Two sheet type
UVSCALE H 0.1 mm × 2 Two sheet type

Light amount measurement range

Measurable lamp Type Effective light amount measurement range *1(mJ/cm2)
High-pressure mercury lamp UVSCALE L 4-200
UVSCALE M 50-2000
UVSCALE H 800-40000
Metal halide lamp UVSCALE L 6-200
UVSCALE M 30-1000
UVSCALE H 700-20000
Low-pressure mercury lamp UVSCALE L 20-3000
UV-LED lamp (365nm) UVSCALE L 200-6000
UVSCALE M 300-7000
UVSCALE H 5000-100000
  • *1The measurement ranges mentioned above is when FUD-7010E is used.
    The light amount range that can be visually checked is the density on standard color samples (0.30 to 0.75).
  • *Applies to wavelengths in the 200 to 420 nm range
  • *This does not guarantee the absolute values of UV light amount values.