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OPTICAL MEASURING DEVICES AND OPTOELECTRONIC EVALUATION DEVICES, NAMELY OPTICAL SPECTROMETERS, OPTICAL SPECTRAL ANALYZERS, OPTICAL THICKNESS ANALYZERS, INTERFEROMETRIC MEASUREMENT DEVICES, OPTICAL ENCODERS, HOLOGRAPHIC OPTICAL DATA STORAGE, OPTICAL RECEIVERS, OPTICAL CHEMO-SENSORS, SPECTRAL SENSORS; COMPUTERS, NAMELY, MICROCONTROLLERS FOR OPTICAL DEVICES; COMPUTER SOFTWARE RECORDED ON MAGNETIC DATA CARRIERS FOR USE IN OPTICAL MEASUREMENT DATA PROCESSING