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Product category: Microprocessors, Microcontrollers and DSPs
News Release from: Mazet | Subject: Jencolour True Colour Sensor
Edited by the Electronicstalk Editorial Team on 18 December 2006

Exact adjustment of colours in LEDs

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Mazet, the leading system vendor for industrial electronics presents a demonstrator and evaluation kit for testing an active RGB Power-LED colour regulator

The testing system is based on the reliable Jencolour True colour sensor MTCSiCS by Mazet. This construction demonstrates an LED regulator that produces a readjustment of the LED combination colours. This can be carried out to a quality where no colour difference is noticeable to the human eye.

The function on show can be used to compensate for temperature and ageing effects when using LEDs.

Customers can evaluate their software algorithm for regulation and control.

This is very significant for LED-based illumination systems with high colour consistency requirements.

Two RGB PowerLED modules, which are located in directly adjoining light wells, serve as the light source.

The colour ratios are controlled via pulse width modulation.

They can be set from the PC via a serial interface.

The combination colours are respectively visible on a diffuser disc and can be directly compared (colour matched) with each other.

Both light wells are equipped with an MTCS-C2 module.

Alongside the True Colour sensor MTCSiCS, this contains the programmable signal gain and processing as well as a USB interface.

Each MTCS-C2 module includes the created combination colour on the diffuser surface of a light well.

The measurement data is transferred via USB and visualised in two colour diagrams respectively on a PC.

The chromaticity coordinate difference is also displayed.

In general, various colour temperatures can be set or any combination colours can be created/accidentally generated by means of an LED module.

This colour specification is evaluated with an MTCS-C2 module and the adjoining LED module, which is evaluated with the second MTCS-C2 module, is readjusted with a suitable standard algorithm, until the chromaticity coordinate differences recorded by both MTCS-C2 modules correspond to a pre-defined minimum quality.

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