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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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Apparatus and manufacturing method for in-situ impregnation of continuous fiber tows with thermoplastic resin for use in additive manufacturing.
RPI ID:
2018-034-401
Innovation Summary:
This system spreads continuous fiber tows over convex pins, then impregnates the widened tow in‑situ using a heated die with opposing resin supply conduits. After wet‑out, a converging die meters excess resin and shapes the prepreg, followed by cooling and take‑up. An angled drive roller provides...
Published: 3/10/2026
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Updated: 3/10/2026
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Inventor(s): James Garofalo, Daniel Walczyk
Keywords(s): 3D Printing, Additive Manufacturing, Advanced Thermoplastic Composites
Category(s): Biotechnology and the Life Sciences
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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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