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MAZeT unveils true-color sensor modules

Posted: 13 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:sensor? color sensor? sensors? MAZeT? sensor module?

MTCS-TIAM color sensor module from MAZeT

Industrial electronic systems vendor MAZeT GmbH has added two true-color sensor modules to its Jencolour product group.

Under the name MTCS-TIAM, MAZeT is offering a color sensor board with optical shutters which, along with the MTCSiCS true-color sensor IC, also integrates the MTI04CQ transimpedance amplifier using a compact chip-on-board technology. The board can be provided with two optional white LEDs and a 10 aperture for screening from the environment for compliance with the measurement geometry requirements in accordance with DIN5033.

On the input side, TIAM1 contains the control pins of the MTI04C, which allow amplification and bandwidth to be adapted, as well as a power-down mode. Due to its integrated components and construction, the board is suitable for use as a complete sensor head for direct installation in measurement and control units. As an interface, three analog voltage values (corresponding to the XYZ tristimulus value function in accordance with the sensor calibration) are available on the output side, which can be further processed in the ADC of an MCU as color values in the Cielab color space.

Tristimulus color measurement
The MTCS-TIAM2 comprises a true-color sensor IC with an integrated signal amplifier (MTI04C). The IC is packaged in a plastic casing and contains XYZ (RGB) filters and is therefore suitable for color measurements based on the tristimulus value function in accordance with DIN 5033-CIE Lab.

The color sensor IC consists of 19-by-3 Si-PIN photo diodes, which are integrated on the chip. Using Si-PIN photo diodes enables general signal frequencies up to the MHz range, which are dependant on the subsequent amplifier and its adjustment. Each photo diode on the chip is furnished with dielectric color filters XYZ for a color range which correspond to the tristimulus value function from DIN 5033 (Tristimulus). On the output side, the analog photo currents XYZ are directly transferred to the amplifier IC. The diodes have been designed as a segment of a multi-element hexagonal matrix structure with a diameter of 2mm.

These can be used for general color detection and measurement in the consumer goods industry, as portable color detectors/readers, in RGB-LCD backlight monitors, for regulating RGB power LEDs, as well as for detecting a wide variety of light sources.

Good optical characteristics
The dielectric filters guarantee good optical characteristics, such as high transmission, durability, temperature stability, high signal frequencies, reduced crosstalk and small dimensions. They feature the characteristics of tristimulus value function for color measurement in accordance with DIN 5033. The LCC package is RoHS-compliant.

The form and content of the TIAM2 may, if necessary, be adapted according to customer requirements.

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