Non-conductive LED Reflector with Attachment System

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Solution Overview

Problem

Conventional reflectors for LED light sources made from conductive materials require isolation gaps, leading to reduced light control efficiency and light loss, and metalized reflectors suffer from coating degradation affecting reflectivity and color accuracy.

Innovation Solution

Non-conductive reflectors with non-conductive reflective coatings on a substrate, coupled with a reflector attachment system that allows precise positioning and easy replacement, along with a media holder for optical media, enhance light control and maintain reflectivity over time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If conductive materials are used for reflectors, then reflectivity is achieved, but isolation gaps are required which reduce light control efficiency and cause light loss

Engineering Contradiction:
Improvelight control efficiencyVSAvoidlight loss
Core Design Contradiction:
Illumination intensityVSLoss of energy

Solution Approach 1:

The patent changes the electrical conductivity parameter of the reflector material from conductive to non-conductive. This allows the reflector to be positioned closer to the LED light source without requiring isolation gaps, thereby improving light control efficiency and reducing light loss while maintaining reflectivity through non-conductive reflective coatings.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If conductive materials are used for reflectors, then reflectivity is achieved, but the reflector must be positioned farther from the LED light source

Engineering Contradiction:
Improveprotect against electric dischargesVSAvoidreflector-to-LED distance
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The patent changes the electrical conductivity parameter from conductive to non-conductive, eliminating the need for isolation gaps while maintaining electrical safety. This allows the reflector to be positioned closer to the LED light source, improving light control efficiency and reducing light loss.

Inventive Principle:
Principle #35Parameter changes

3Illumination intensity

If metalized reflectors are used, then reflectivity is achieved, but coating degradation occurs over time affecting reflectivity and color accuracy

Engineering Contradiction:
ImprovereflectivityVSAvoidcoating durability
Core Design Contradiction:
Illumination intensityVSDuration of action of stationary object

Solution Approach 1:

The patent uses a composite structure combining non-conductive substrate materials (such as glass or plastic) with non-conductive reflective coatings. This composite approach provides both immediate reflectivity and long-term durability, as the non-conductive coating does not degrade over time like metalized coatings, maintaining reflectivity and color accuracy throughout the product lifespan.

Inventive Principle:
Principle #40Composite materials

4Ease of repair

If reflectors are made easily replaceable, then maintenance is simplified, but maintaining precise coaxial orientation and position becomes challenging

Engineering Contradiction:
Improvereflector replacement easeVSAvoidreflector position precision
Core Design Contradiction:
Ease of repairVSManufacturing precision

Solution Approach 1:

The patent divides the reflector system into separable components: the reflector itself and the reflector attachment. This segmentation allows the reflector to be easily removed and replaced while the attachment remains with the LED module. The attachment includes alignment features that ensure precise coaxial orientation and positioning is maintained with each replacement, simplifying maintenance while preserving manufacturing precision.

Inventive Principle:
Principle #1Segmentation

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 improves light control and maintains reflectivity, reducing light loss and ensuring consistent color accuracy by using non-conductive materials and a precise attachment system, while allowing for easy reflector replacement and quick attachment of optical media.

Implementation Method 1

A non-conductive reflective coating can be disposed on the interior surface of the reflector

Methodology Applied
Scientific EffectReflection: Reflection

Data Source

PatentUS8845141B2Reflectors and reflector attachments for use with light-emitting diode (LED) light sources
Publication Date: 2014.09.30 SIGNIFY HOLDING BV
  • US8845141B2 patent drawing
  • US8845141B2 patent drawing
  • US8845141B2 patent drawing

AI summary

A reflector is rotatably coupled to a light emitting diode (LED) module assembly. The reflector includes multiple alignment features that correspond with multiple notches provided in a reflector attachment coupled to a LED light source. The reflector can be made of a non-conductive substrate material, such as glass, and can have a non-conductive, reflective coating deposited on the inner surface of the reflector to allow the reflector to be more closely positioned to the LED light source. Reflector attachments can help to maintain precise reflector position during coupling with the LED light source. Media holders can be removably coupled to the light emitting portion of the reflector and provide for the quick mounting and placement of one or more optical media in the light path output by the reflector.