Light-Emitting Mirror Structure With Uniform LED Light Guiding

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Solution Overview

Problem

Compact size mirrors lack uniform and safe lighting, often resulting in inadequate illumination and potential eye damage due to excessive light output from traditional lighting devices.

Innovation Solution

A light emitting mirror structure integrating a mirror body with a light guiding device, utilizing a light-emitting diode and light guiding technique to provide uniform and smooth light, while incorporating a power module for USB rechargeability to reduce environmental impact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If traditional lighting devices are used in compact mirrors, then illumination is provided, but the light is not uniform and may damage eyes due to excessive light output

Engineering Contradiction:
Improvelight outputVSAvoideye damage risk
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

A light guide plate is introduced as an intermediary component between the LED light source and the mirror surface. The light guide plate diffuses and redirects light uniformly across the mirror surface, preventing concentrated light output that could damage eyes while maintaining adequate illumination intensity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The lighting system provides different light characteristics in different areas: the LED generates intense light locally, while the light guide plate distributes this light uniformly across the mirror surface. This creates local variations in light density that ensure safe, uniform illumination without concentrated hot spots.

Inventive Principle:
Principle #3Local quality

2Illumination intensity

If traditional lighting devices are used in compact mirrors, then illumination is provided, but the light is not uniform around the mirror body

Engineering Contradiction:
Improvelight outputVSAvoidlight uniformity
Core Design Contradiction:
Illumination intensityVSManufacturing precision

Solution Approach 1:

The light guide plate serves as a mediating structure that transforms point-source LED light into uniform area illumination. Through its optical design and surface characteristics, it evenly distributes light across the entire mirror surface, achieving uniform illumination that conventional direct lighting cannot provide.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The lighting system transitions from one-dimensional point-source illumination (LED) to two-dimensional uniform surface illumination (mirror surface). The light guide plate enables this dimensional transformation by spreading light laterally across the surface, creating uniform illumination in multiple directions simultaneously.

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

3Volume of moving object

If compact size mirrors are used, then portability is improved, but sufficient lighting is not provided

Engineering Contradiction:
Improvemirror sizeVSAvoidlight output
Core Design Contradiction:
Volume of moving objectVSIllumination intensity

Solution Approach 1:

The lighting system and mirror body are merged into a single integrated structure. The light guide plate is positioned adjacent to and integrated with the mirror surface, allowing the compact mirror to provide sufficient illumination without requiring separate lighting devices, thus maintaining portability while ensuring adequate light output.

Inventive Principle:
Principle #5Merging (Combining)

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 ensures uniform and safe lighting around the mirror body with reduced power consumption and size, addressing the limitations of traditional compact mirrors by providing consistent illumination and environmentally friendly battery charging.

Implementation Method 1

at least one light-emitting diode capable of concentrating a certain amount of the light on a relatively small area

Methodology Applied
Scientific EffectLight-emitting diode: Light Emitting Diode

Implementation Method 2

a light guiding device having a light guide plate... the light guiding plate renders possible a light to be emitted by the sidewall

Methodology Applied
Scientific EffectLight transmission: Refraction

Data Source

PatentUS9170353B2Light emitting mirror structure
Publication Date: 2015.10.27 CHANG
  • US9170353B2 patent drawing
  • US9170353B2 patent drawing
  • US9170353B2 patent drawing

AI summary

A light emitting mirror structure includes a casing caved in to form an accommodating space having a light guiding area and a mirror area, and at least one surface of the casing as a sidewall communicating with the accommodating space. The mirror structure includes a light guiding device having a light guide plate, and a light emitting member disposed on a side of the light guide plate, and the light guiding device is placed at the light guiding area of the accommodating space of the casing. A mirror body having a substrate and a mirror surface located on the substrate is provided for the disclosed mirror structure also. The mirror body is integrated on the mirror area of the accommodating space, the light guiding plate causes a light to be emitted through the sidewall at a first side of the mirror body, and the mirror surface is uncovered by the sidewall.