Application specific selection of RGB, True Color and Multi-Spectral sensors for lighting control
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1 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 (Nr.:1) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
2 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 / Jena (Nr.:2) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
3 TRANSMISSION FACTOR OF INTERFERENCE VS. ABSORPTION FILTERS 100 % 100 % No minimum absorption 15-30% absorption Interference filters Absorption filters MAZeT GmbH Kevin Jensen / Jena (Nr.:3) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
4 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 / Jena (Nr.:4) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
5 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 / Jena (Nr.:5) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
6 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 / Jena (Nr.:6) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
7 COMPARING RGB VS. TRUE COLOR SENSORS Common RGB sensors with strong color drift effects from temperature influences. True Color sensor without visible drift Highly accurate values compared to a spectrometer in lighting applications. True Color Filter MAZeT GmbH Kevin Jensen / Jena (Nr.:7) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
8 PRINCIPLE OF ACTIVE FEEDBACK CONTROL MAZeT GmbH Kevin Jensen / Jena (Nr.:8) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
9 REASONS FOR FEEDBACK CONTROL OPTIONS? Causes of color shifts Aging Temperature Binning CCT Dimming Availability Further details in the presentation of Thomas Nimz 20 C 80 C MAZeT GmbH Kevin Jensen / Jena (Nr.:9) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
10 LED CONTROL FOR DAYLIGHT & COLOR MANAGEMENT Smart Lighting and color management options Sensor solution to measure the active daylight values Integrated network to manage internal lights (office, building, department, production) based on the daylight values Black body or color regulation (ambient lighting) Internal feedback loop to maintain stable lighting conditions over multiple lamps/rooms and to reduce further maintenance costs Sensor & system solution Room 1 Room 2 Room 3 Room 4 Room 5 Room 6 Individually or network control of entire light & color management MAZeT GmbH Kevin Jensen / Jena (Nr.:10) JENCOLOR ZEISS 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 / Jena (Nr.:11) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
12 SENSOR USAGE IN LIGHTING APPLICATIONS MTCSiCF True Color Sensor Ideal for active feedback control solutions (Aviation, general lighting, spot lights, etc.) Ideal as ambient light and CCT sensor Ideal as sensor for LED testing solutions MMCS6CS Multi-spectral Sensor Ideal as sunlight sensor for circadian rhythm control with spectral response data True Color Filter MAZeT GmbH Kevin Jensen / Jena (Nr.:12) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
13 MAZET: REDUCING TIME-TO-MARKET Test System Simulation Technical Specifications MAZeT GmbH Kevin Jensen / Jena (Nr.:13) JENCOLOR ZEISS Spectronet Collaboration Forum 2014
Comparison of color sensor characteristics for mobile applications. Kevin Jensen European Imaging Academy 2014
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