Comparison of color sensor characteristics for mobile applications. Kevin Jensen European Imaging Academy 2014
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1 Comparison of color sensor characteristics for mobile applications Kevin Jensen European Imaging Academy 2014 MAZeT GmbH Kevin Jensen (Nr.:1) European Imaging Academy - SpectroNet Collaboration Forum 2014
2 OVERVIEW OF SYSTEM DEVELOPMENT Quality Applications Time to market Size & Cost Accuracy & stability Industry Standards (e.g. CIE 1931) Spectral detection Application-specific algorithms and components Evaluation and test systems MAZeT expertise Design Flow Simulation tools Test systems Functional solutions Integration of detectors, converter digital interfaces Specific packages MAZeT GmbH Kevin Jensen (Nr.:2) European Imaging Academy - SpectroNet Collaboration Forum 2014
3 MAZET: REDUCING TIME-TO-MARKET Designing mobile devices has multiple phases and challenges! Design & Series Production All-in-one service provider: from design to series production More than 20 years of engineering expertise Contract Specifications OEM modules Test boards Samples Libraries Simulation software Test System Calibration tools Simulation Technical Specifications MAZeT GmbH Kevin Jensen (Nr.:3) European Imaging Academy - SpectroNet Collaboration Forum 2014
4 QUESTIONS WHEN STARTING A PROJECT? What needs to be performed? What are the target costs? System requirements? (Interfaces, size, etc.) What accuracy is required? How can the measurement be performed? How will the signals be processed? Calibration options and algorithms Simulation & optimization for stable measurement values Software development and adaption MAZeT GmbH Kevin Jensen (Nr.:4) European Imaging Academy - SpectroNet Collaboration Forum 2014
5 FLEXIBLE DESIGN OPTIONS FOR VARIOUS APPLICATIONS Color Sensors Signal ICs Spectral Sensitive Sensors Development Kits MAZeT GmbH Kevin Jensen (Nr.:5) European Imaging Academy - SpectroNet Collaboration Forum 2014
6 RGB SENSOR: TYPICAL CHARACTERISTICS Commonly based on absorption filters Consist of three band-pass filter Peaks based on manufacturing process not via standards Pros: Ideal for sorting tasks or simple color Cons: Limited in color accuracy Only for relative color measurement Not based on standards Color drifts during usage True Color Filter MAZeT GmbH Kevin Jensen (Nr.:6) European Imaging Academy - SpectroNet Collaboration Forum 2014
7 TRUE COLOR SENSOR: TYPICAL CHARACTERISTICS MAZeT: Based on JENCOLOR interference filter technology Provides XZY sensor data (Standard observer function) Hexa-comb structure for ideal optical connection Pros: Suitable for relative or absolute color measurement Based on CIE 1931/DIN5033 standard (Human eye perception) No drift effects (temperature, aging) due to JENCOLOR interference filter technology Cons: No spectral data output True Color Filter MAZeT GmbH Kevin Jensen (Nr.:7) European Imaging Academy - SpectroNet Collaboration Forum 2014
8 MULTI-SPECTRAL SENSOR: TYPICAL CHARACTERISTICS MAZeT: Based on JENCOLOR interference filter technology Provides quasi-spectral sensor data (6 channels) Spectrometer-like measurement options Pros: Suitable for relative or absolute color measurement Highly accurate providing quasi-spectral data as well as color information No drift effects (temperature, aging) due to JENCOLOR interference filter technology Cons: Not based on standards True Color Filter MAZeT GmbH Kevin Jensen (Nr.:8) European Imaging Academy - SpectroNet Collaboration Forum 2014
9 INTERFERENCE FILTERS VS. ABSORPTION FILTERS Color filters Interference Absorption inorganic organic Filter characteristics are independent from light level Filters are stable even in sun light over years Filters bleach / lose color due to influences of time in light intensity MAZeT GmbH Kevin Jensen (Nr.:9) European Imaging Academy - SpectroNet Collaboration Forum 2014
10 REDUCTION OF SIZE AND COST 2 Chips Solution and/or on Board Hybrid Color Sensor Integrated Color Sensor MAZeT GmbH Kevin Jensen (Nr.:10) European Imaging Academy - SpectroNet Collaboration Forum 2014
11 ACCURACY EXAMPLES Delta u v < Delta Y < 2% Delta u v = Delta E < 0.6 CMY Max Delta E 2000 = ph value e.g 0.1 > 80 Parameters 15m/sec 12 Bit/channel 240mm MAZeT GmbH Kevin Jensen (Nr.:11) European Imaging Academy - SpectroNet Collaboration Forum 2014
12 SENSOR USAGE IN MOBILE APPLICATIONS MTCSiCF True Color Sensor Ideal for relative and absolute color measurement Test devices (LED, display, color density) Color control or mangement MMCS6CS Multi-spectral Sensor Ideal for surface monitoring and measurement (Printing industry) Spectral evaluation (quasi-spectrum via approximation methods) Micro-fluidics, chemical compositions, spectral object analysis, medical applications etc. True Color Filter MAZeT GmbH Kevin Jensen (Nr.:12) European Imaging Academy - SpectroNet Collaboration Forum 2014
Application specific selection of RGB, True Color and Multi-Spectral sensors for lighting control
Application specific selection of RGB, True Color and Multi-Spectral sensors for lighting control Kevin Jensen JENCOLOR ZEISS SpectroNet Collaboration Forum 2014 MAZeT GmbH Kevin Jensen / Jena 28.08.2014
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