Lighting Module With Light Guide Plate For Eye Strain Reduction

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Solution Overview

Problem

Conventional LED lighting systems often produce intense light that can cause eye strain and discomfort, as they do not effectively distribute light in a manner that mitigates these issues.

Innovation Solution

A lighting module comprising a light guide plate and optical plates that reflect and transmit light from opposing LED sources, controlling light distribution to create a wider upper light distribution compared to a lower light distribution, thereby reducing eye strain and improving comfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If conventional LED lighting systems are used, then energy efficiency and lifespan are improved, but light intensity becomes too strong causing eye strain and discomfort

Engineering Contradiction:
Improveenergy efficiencyVSAvoideye strain
Core Design Contradiction:
Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a light guide plate as an intermediary component between the LED light source and the user's eyes. This light guide plate diffuses and redistributes the light, transforming the direct intense beam into a softer, more distributed illumination pattern that reduces eye strain while maintaining energy efficiency

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies local quality by creating different light distribution characteristics in different regions. The lighting system provides higher illumination intensity in peripheral areas and lower intensity in the central viewing area, optimizing both energy utilization and visual comfort by matching human visual perception characteristics

Inventive Principle:
Principle #3Local quality

2Device complexity

If direct LED lighting is used, then device complexity is reduced, but light distribution becomes insufficient causing intensified light emission

Engineering Contradiction:
Improvestructure simplicityVSAvoidlight distribution
Core Design Contradiction:
Device complexityVSIllumination intensity

Solution Approach 1:

The patent transitions from one-dimensional direct light emission to two-dimensional light distribution by introducing a light guide plate. This component spreads light across a larger surface area, achieving better light distribution without significantly increasing device complexity

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent employs curved or angled reflective surfaces within the lighting structure to redirect and distribute light more evenly. These curved elements help diffuse the intense LED output into a softer, more uniform illumination pattern while adding minimal structural complexity

Inventive Principle:
Principle #14Spheroidality (Curvature)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution effectively reduces eye strain and enhances user comfort by adjusting light emission patterns, ensuring a more natural and comfortable lighting experience.

Implementation Method 1

the optical plate reflects a part of light from the first and the second light sources and transmits the rest of the light

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

a light guide plate disposed between the first light source and the second light source

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 3

a light guide plate disposed between the first light source and the second light source

Methodology Applied
Scientific EffectTotal internal reflection: Total Internal Reflection

Data Source

PatentUS8950922B2Lighting module
Publication Date: 2015.02.10 SUZHOU LEKIN SEMICON CO LTD
  • US8950922B2 patent drawing
  • US8950922B2 patent drawing
  • US8950922B2 patent drawing

AI summary

A lighting module may be provided that comprises: a first and a second light sources, which are disposed opposite to each other; a light guide plate disposed between the first light source and the second light source and including a top surface and a bottom surface; a first case including the first light source; a second case including the second light source; and an optical plate disposed on at least one of the top surface and the bottom surface of the light guide plate, wherein the optical plate reflects a part of light from the first and the second light sources and transmits the rest of the light.