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Multispectral daylight sensor to enable energy savings and well-being of occupants
RPI ID: 2016-061-401Innovation Summary:This invention introduces a novel method and sensor system for accurately determining the spectral composition of light at a specific target location. The system uses a multi-channel sensor assembly to capture light data and a computational model to analyze the spectral power distribution (SPD) of the light source....
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Yiting Zhu, Jean Paul Freyssinier, Yi-wei Liu, Dinusha Thotagamuwa, Nadarajah Narendran
Keywords(s): Circadian, Daylight, LED, Sensors
Category(s): Biotechnology and the Life Sciences
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Scattered-photon Extraction Based Light Fixtures
RPI ID: 2007-080-401, 2007-080-601, 2007-080-602, 2007-080-603Innovation Summary:This suite of patented technologies introduces advanced LED light fixture designs that leverage scattered-photon extraction to significantly enhance optical efficiency, brightness, and color control. The systems integrate wavelength-conversion materials, structured optical...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Jean Paul Freyssinier, Yimin Gu, Nadarajah Narendran, Yiting Zhu
Keywords(s):
Category(s): Energy, Environment and Smart Systems
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Scattered-photon Extraction Based Light Fixtures
RPI ID: 2006-012-201Innovation Summary:This invention presents a high-efficiency LED-based light engine that optimizes the integration of LEDs with optical, thermal, and electronic components to deliver superior luminous performance. The design incorporates advanced optical mixing chambers, reflective surfaces, and thermal management strategies to maximize...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Jean Paul Freyssinier, Yimin Gu, Nadarajah Narendran
Keywords(s): Coatings, defense, Materials, terahertz, Terahertz Technology, THz
Category(s): Energy, Environment and Smart Systems
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Novel package for producing white light with short-wavelength LEDs/RCLEDs and down conversion phosphors
RPI ID: 2004-038-409Innovation Summary:This invention presents a high-efficiency light source that integrates a solid-state emitter—such as an LED or laser diode—with a down-conversion material and an optical feedback system. The design captures both forward and backward emitted light from the down-conversion layer and redirects it to enhance overall...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Jean Paul Freyssinier, Yimin Gu, Nadarajah Narendran
Keywords(s): LED, Lighting & Illumination Technology
Category(s): Biotechnology and the Life Sciences
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