Abstract
Advanced lens fabricating techniques are urgently required for the development of white light-emitting diodes (WLEDs) packaging, due to the traditional LED lenses molding possesses presents many disadvantages like high cost, long-fabrication period, less compactness and low accuracy. The current study demonstrated the fabrication of lenses with transparent resin utilizing stereolithography (SLA) 3D printing. The SLA 3D printing parameters were optimized to accurately regulate the spheric and ellipsoidal lenses with the smooth surface and the acceptable transmittance. The illuminances, lighting efficiency (LE) and lighting distribution curves of the SLA-fabricated lens packaged WLEDs highly depended on the lens structure. The WLEDs with lower lens height exhibited more intense lighting energy density, higher LE and wider light output angle. SLA 3D printing offers a flexible approach of fabricating WLED lens, which provides a novel technical route for WLEDs to meet different lighting requirements.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
