True Color Sensors for Colorimetric Applications
Bildmaterial
( Press release from 04.09.2004 )
 | |
| |
Jena, May 25, 2004: MAZeT GmbH, a leading provider of electronic
designs, ASICs and sensors, presents technological news of its
JENCOLORTM sensor product line at the International Trade Fair for
Optical and Microtechnical Products (O.M.P.) from 25. to 27. May, 2004
in Nuremberg.
Positioned on booth no. 1-212, MAZeT demonstrates how the first representative of a new generation of color sensors of its JENCOLORTM product line is performing: the MTCS three-range color sensor. The sensor works based on the tristimulus (standard spectral) value function, identifies colors with absolutely unerring precision and 10,000 times faster than human eye would. It provides a compact and dynamic technical solution for general color detection and color measurement jobs.
MAZeT has implemented the tristimulus value function according to DIN5033 in its new three-range color sensor to offer significant advantages in colorimetry and quality control applications and comply with True Color requirements. Ultra-thin interferential filter layers are directly coated onto silicon photo diodes, imitating the human eye’s spectral sensitivity. High transmissivity in the bandpass range, resistance to aging and stability against mechanical and temperature influences are the distinguishing features of these sensors.
Suited for color measurement, color sensors of this type mainly target applications where remitting or transmitting surfaces have to be detected. They are capable of detecting, analysing and measuring minute differences in color, for example, as part of LED testing, calibration of monitors or where mobile equipment is employed for color measurement.
To optimise spectral sensitivity, PIN diodes with a specifically matched technology are used as base material for the photo diodes. Compared to conventional standard PIN technologies with sensitivity peaks between 600nm and 800nm and less sensitivity in the blue spectral range, the JENCOLORTM technology achieves its peak sensitivity at approximately 580nm, thus providing essentially better sensitivity in the blue spectral range than other comparable technologies.
Color sensor ICs output photo currents that correspond to the integral of the amount of introduced light power and the particular spectral range. Because these sensors include special filters, their output currents are proportional to the function of standard XYZ tristimulus values. Also importantly, gain matching and normalisation of measured values are performed with a defined individual factor for each channel to fulfil Luther’s condition. The resulting absolute XYZ standard spectral values can thus be used for further conversion into a randomly selectable color space. This allows for a sufficiently broad range of accuracies in color detection – from “eye accurate“ to “true color“ -, i.e. standard-compliant colorimetry to match the various customer requirements and application environments.
Positioned on booth no. 1-212, MAZeT demonstrates how the first representative of a new generation of color sensors of its JENCOLORTM product line is performing: the MTCS three-range color sensor. The sensor works based on the tristimulus (standard spectral) value function, identifies colors with absolutely unerring precision and 10,000 times faster than human eye would. It provides a compact and dynamic technical solution for general color detection and color measurement jobs.
MAZeT has implemented the tristimulus value function according to DIN5033 in its new three-range color sensor to offer significant advantages in colorimetry and quality control applications and comply with True Color requirements. Ultra-thin interferential filter layers are directly coated onto silicon photo diodes, imitating the human eye’s spectral sensitivity. High transmissivity in the bandpass range, resistance to aging and stability against mechanical and temperature influences are the distinguishing features of these sensors.
Suited for color measurement, color sensors of this type mainly target applications where remitting or transmitting surfaces have to be detected. They are capable of detecting, analysing and measuring minute differences in color, for example, as part of LED testing, calibration of monitors or where mobile equipment is employed for color measurement.
To optimise spectral sensitivity, PIN diodes with a specifically matched technology are used as base material for the photo diodes. Compared to conventional standard PIN technologies with sensitivity peaks between 600nm and 800nm and less sensitivity in the blue spectral range, the JENCOLORTM technology achieves its peak sensitivity at approximately 580nm, thus providing essentially better sensitivity in the blue spectral range than other comparable technologies.
Color sensor ICs output photo currents that correspond to the integral of the amount of introduced light power and the particular spectral range. Because these sensors include special filters, their output currents are proportional to the function of standard XYZ tristimulus values. Also importantly, gain matching and normalisation of measured values are performed with a defined individual factor for each channel to fulfil Luther’s condition. The resulting absolute XYZ standard spectral values can thus be used for further conversion into a randomly selectable color space. This allows for a sufficiently broad range of accuracies in color detection – from “eye accurate“ to “true color“ -, i.e. standard-compliant colorimetry to match the various customer requirements and application environments.
Bildmaterial