Light Cover Collar Design for Glass Light Guide Plate
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Solution Overview
Problem
Existing display technologies face challenges in preventing continuous light reflection within glass light guide plates, which affects brightness uniformity and overall display panel performance.
Innovation Solution
A light cover with a circular opening and collar design is mounted to a downlight trim, allowing the light guide plate's diffusion plate to extend outward, preventing internal light reflection and enhancing brightness distribution by creating an interference fit with a flexible downlight trim.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light is shone on the glass light guide plate, then the brightness of the display panel is improved, but continuous light reflection occurs inside the glass light guide plate affecting brightness uniformity
Solution Approach 1:
The patent extracts and removes the harmful reflected light from the system by introducing a light cover that blocks and absorbs the continuously reflected light inside the glass light guide plate, preventing it from affecting brightness uniformity while maintaining the useful light transmission for display brightness
Solution Approach 2:
The light cover acts as an intermediary element between the light source and the display panel, intercepting the harmful reflected light paths and redirecting or absorbing them, thereby mediating between the need for high brightness and the requirement for uniformity without continuous reflection
2Reliability
If a light cover is mounted to the downlight trim, then light reflection is prevented and brightness uniformity is improved, but the device structure becomes more complex
Solution Approach 1:
The light cover is merged with the downlight trim assembly, integrating the light reflection prevention function into the existing structural framework. The collar of the light cover interfaces with the downlight trim's opening, combining multiple functions (light guidance, reflection prevention, and structural mounting) into a unified assembly that minimizes additional complexity
Data Source
AI summary
A light cover for mounting to a downlight trim installed on a ceiling. A light guide plate is mounted to the downlight trim. The downlight trim has an opening therethrough through which the light guide plate extends. The downlight trim projects outward from the light guide plate so that a diffusion plate of the light guide plate extends outward from the downlight trim. The light cover has a circular opening therethrough through which the diffusion plate of the light guide plate extends so as to light up the light cover. The light cover has a collar which extends from an outer front facing surface of the light cover towards the rear facing surface of the light cover.