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3-D printed optics with internal structures
RPI ID:
2018-036-401
Innovation Summary:
This invention introduces a three‑dimensional (3‑D) optical element that is manufactured using additive processes and contains internal or surface beam‑forming features. The optic accepts incident light on a first surface and emits a shaped beam from a second surface; the emitted distribution (wide, narrow,...
Published: 3/10/2026
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Updated: 3/10/2026
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Inventor(s): Nadarajah Narendran, Ukwatte Lokuliyanage Indi Perera
Keywords(s): 3D Printing, Additive Manufacturing, Lighting, Optics
Category(s): Biotechnology and the Life Sciences
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3D-Printed Modular Architectural Decorative Features with Integrated Lighting
RPI ID: 2021-055-401
Innovation Summary:
This system integrates 3D-printed architectural elements with embedded functional features to create modular building materials. Structural customization, load transfer optimization, and utility integration are supported. The design enables rapid construction and reduces material waste. It is compatible with...
Published: 3/10/2026
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Updated: 3/10/2026
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Inventor(s): Ukwatte Lokuliyanage Indi Perera, Jean Paul Freyssinier, Nadarajah Narendran
Keywords(s): 3D Printing, Additive Manufacturing, Architecture, Building, Construction, LEDs, Lighting
Category(s): Energy, Environment and Smart Systems
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3D Printed Integrated Heatsink-Reflector Light Fixture
RPI ID: 2021-044-401
Innovation Summary:
This invention introduces 3D printed structures that integrate thermal management and light transfer capabilities into a single component. The design includes embedded channels and reflective surfaces that optimize heat dissipation and light guidance. It supports applications in lighting systems, electronics...
Published: 3/23/2026
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Updated: 3/10/2026
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Inventor(s): Jean Paul Freyssinier, Ukwatte Lokuliyanage Indi Perera, Nadarajah Narendran
Keywords(s): 3D Printing, heat sink, Lighting, Optics
Category(s): Nanotechnology and Advanced Materials
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3-D printable lens for shaping the beam of outdoor light fixture to attain high application efficiency
RPI ID: 2021-038-401
Innovation Summary:
A 3-D printable lens structure is designed to enable rapid prototyping and customization of optical components. The system uses additive manufacturing techniques to fabricate lenses with complex geometries and integrated features. It supports variable focal lengths and embedded alignment structures. The design...
Published: 3/10/2026
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Updated: 3/10/2026
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Inventor(s): Akila Udage, Nadarajah Narendran
Keywords(s): 3D Printing, illuminance, Lighting
Category(s): Nanotechnology and Advanced Materials
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3D-Printed Internal Cavity Lens for LED Lighting Applications
RPI ID:
2023-047-201
Innovation Summary:
This invention introduces a novel optic design for LED lighting systems featuring a dual-lens structure with planar external surfaces and internal nonplanar refractive surfaces that define an internal cavity. The internal surfaces are engineered using light-energy mapping techniques to refract incident light...
Published: 9/22/2025
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Updated: 9/5/2025
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Inventor(s): Akila Udage, Nadarajah Narendran
Keywords(s): 3D Printing, Lighting
Category(s): Energy, Environment and Smart Systems
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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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High Power White LEDs and Manufacturing Method Thereof
RPI ID: 2006-063-201, 2006-063-601, 2006-063-602, 2006-063-604, 2006-063-605Innovation Summary:This portfolio introduces a suite of advanced LED-based lighting technologies designed to optimize luminous efficacy, thermal performance, and color stability in solid-state lighting systems. The innovations include a modular LED light engine with a reflective...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Yimin Gu, Nadarajah Narendran
Keywords(s):
Category(s): Energy, Environment and Smart Systems
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Multi-Colored Light Emitting Diode Illumination Systems
RPI ID: 2006-050-605Innovation Summary:This patented technology presents a lighting system that combines a solid-state light emitter (such as an LED) with phosphor materials to produce high-quality white light. The design strategically positions the phosphor in relation to the emitter to optimize light conversion efficiency and color rendering. The...
Published: 7/21/2025
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Updated: 7/3/2025
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Inventor(s): Yimin Gu, Nadarajah Narendran
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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