The measurement of light transmission through transparent and translucent materials

IR1 Light Tester

During the 1990’s new transparent banking cards were introduced. The first cards had problems with these cards not reading and being rejected in ATM Machines.

The reason for this was that some cards had been manufactured out of specification to the ISO Test on light absorption/opacity. Guarantees could not be given that the new transparent cards would work in the ATM Machines. No pre-testing of the cards was possible to the full ISO Test. There was a risk that cards may fail in ATM machines anywhere in the world.

IR1 light tester was made to be able to test “in house” before, during and after production of the printed smart cards to ensure they passed the ISO Test. Designed for ease of use in production.

Click to Download our IR1/UVS2 PDF datasheet.

UVS1 – Unit to measure radiated light intensity of invisible inks

Uvs1 is an additional unit that was developed to add to ir1 and came about due to the problems with invisible ink prints.

Security printing of cards with an “invisible” ink is possible and forms a good security i.d. Feature. The inks are invisible until viewed under ultra violet light (black light). The ink print will fluoresce emiting visible light and “appear” to the viewer.

Problems came about with the printing of “logo id,s” for the large financial institutions. When the ink intensity was insufficient or excessive the print was either not visible enough under black light or became visible under day light making this feature unusable.

Uvs1 light tester was made to be able to test “in house” before, during and after production of the printed smart cards to ensure they passed a new emited visible light intensity test.

Uvs1 measures the visible light energy produced by the “black light” and quantifies exactly the acceptable levels of emited visible light. The result is an invisible ink print can now be measured (like colour matching) to be consistant and set to exact values to protect logo id and security.

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