Abstract
Light-emitting diodes (LEDs) have numerous advantages. However, LEDs only offer a point light source. Therefore, transforming LEDs into planar light sources is a new objective in general lighting applications. Solid light guides have strong uniformity but are marred by their material absorption characteristics and weight. Hollow light guides constitute a solution to the weight problem but exhibit poor uniformity and necessitate sacrificing efficiency to enhance uniformity. To resolve the uniformity, weight, and efficiency problems simultaneously, we propose a hollow light guide architecture involving mini-LEDs with asymmetric luminous intensity. To develop this guide module, we first optimized the aspect ratio of the cavity and then modulated the light path by using varied angles of the reflection surface on the end wall of the module. We then designed a beveled reflection surface near the mini-LEDs to further enhance uniformity. An archetype of the proposed architecture for planar light source modules had a width and depth of 51.5 and 9.95 mm, respectively. Experimental results revealed a total efficiency of 83.9% and uniformity of 92.3%. The module weight was determined to be 215 g, which was 40% lighter than that of similarly sized solid light guide modules.
Highlights
After several decades of light-emitting diodes (LEDs), emergent, LED lighting technology has undergone several significant developments and has gradually become the typical light source for backlighting liquid crystal displays and lighting devices
The mini-LEDs with asymmetric luminous intensity distribution were packaged in a flip the surface and material parameters of all components of the light source module used in the simulation
We which can be expressed as W0 /H0, where W0 represents the optical cavity width and H0 representsset thea constant width but varied the evaluate thetobest aspect ratio of the optical cavity in our optical cavity height
Summary
After several decades of light-emitting diodes (LEDs), emergent, LED lighting technology has undergone several significant developments and has gradually become the typical light source for backlighting liquid crystal displays and lighting devices. This study proposes a hollow light guide architecture involving mini-LEDs with an architecture mini-LEDs an asymmetric distribution, diffuse reflection asymmetricinvolving luminous intensitywith distribution, diffuseluminous reflection intensity cavity, and beveled reflection surface to cavity, and beveled enhance reflection uniformity, surface to enhance efficiency, enhance uniformity, and reduce weight. Simulation and Design of Proposed Hollow Light Guide Involving Mini-LEDs with Asymmetric Luminous. Simulation and Design of Proposed Hollow Light Guide Involving Mini-LEDs with Asymmetric. The mini-LEDs with asymmetric luminous intensity distribution were packaged in a flip the surface and material parameters of all components of the light source module used in the simulation.
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