LED Light Source With Gradient Light Guide And Movable Cartridge

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Solution Overview

Problem

Existing LED light sources face challenges in efficiently directing light and maintaining even illumination across a light emitting surface, particularly in applications where directional lighting is required.

Innovation Solution

The LED light source incorporates a longitudinally extending light guide with a light emitting face that has a varying density of light emitting locations, increasing from one end face to the other, along with a cartridge housing LEDs that can be inserted and biased into position to optimize light emission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If LEDs are distributed uniformly across the light emitting surface, then the structure is simple, but illumination evenness deteriorates

Engineering Contradiction:
ImproveLED distribution structureVSAvoidillumination evenness
Core Design Contradiction:
Device complexityVSIllumination intensity

Solution Approach 1:

The patent applies local quality by varying the density of light emitting locations along the light guide. Specifically, the density of light emitting locations increases from the first end face toward the second end face, creating non-uniform local characteristics that compensate for light attenuation and achieve even overall illumination across the light emitting surface

Inventive Principle:
Principle #3Local quality

2Device complexity

If light emitting locations are concentrated at one end, then the structure is simple, but illumination evenness deteriorates

Engineering Contradiction:
Improvelight guide structureVSAvoidillumination evenness
Core Design Contradiction:
Device complexityVSIllumination intensity

Solution Approach 1:

The patent implements local quality by creating a gradient distribution of light emitting locations along the light guide length. The density progressively increases from the first end face to the second end face, transforming the simple concentrated structure into a graded structure that maintains both simplicity and illumination evenness

Inventive Principle:
Principle #3Local quality

3Manufacturing precision

If the cartridge is fixed rigidly, then positioning precision is improved, but ease of replacement deteriorates

Engineering Contradiction:
Improvecartridge positioningVSAvoidcartridge replacement
Core Design Contradiction:
Manufacturing precisionVSEase of repair

Solution Approach 1:

The patent applies dynamics by transitioning the cartridge from a fixed rigid state to a movable state during installation and replacement. The cartridge can be moved between an inserted position (for optimal light coupling) and a removable position (for easy replacement), achieving both positioning precision and ease of maintenance through state transformation

Inventive Principle:
Principle #15Dynamics

4Ease of repair

If the cartridge is made removable, then ease of replacement is improved, but positioning precision deteriorates

Engineering Contradiction:
Improvecartridge replacementVSAvoidcartridge positioning
Core Design Contradiction:
Ease of repairVSManufacturing precision

Solution Approach 1:

The patent resolves this contradiction through dynamic positioning - the cartridge is designed to be movable during installation/removal but automatically assumes a precise inserted position during operation. The biasing member ensures the cartridge achieves optimal positioning (first face adjacent to the light guide) when inserted, maintaining positioning precision while enabling easy replacement

Inventive Principle:
Principle #15Dynamics

5Area of stationary object

If light is emitted uniformly across the entire light guide, then illumination coverage is improved, but light directionality deteriorates

Engineering Contradiction:
Improveillumination coverageVSAvoidlight directionality
Core Design Contradiction:
Area of stationary objectVSShape

Solution Approach 1:

The patent applies segmentation by dividing the light guide into multiple discrete light emitting locations along its length, rather than treating it as a continuous uniform emitter. This segmentation, combined with the graded density distribution, enables controlled light emission patterns that maintain both coverage and directionality

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

This configuration ensures concentrated and even illumination, enhancing the efficiency and effectiveness of light distribution while allowing for easy replacement of cartridges.

Implementation Method 1

a longitudinally extending light guide with a light emitting face that has a varying density of light emitting locations

Methodology Applied
Scientific EffectTotal internal reflection: Total Internal Reflection

Implementation Method 2

A light-emitting diode (LED) is a semiconductor light source that emits light when activated

Methodology Applied
Scientific EffectLight emitting diode effect: Light Emitting Diode

Data Source

PatentUS20250052942A1LED light source
Publication Date: 2025.02.13 OMACHRON INTELLECTUAL PROPERTY INC
  • US20250052942A1 patent drawing
  • US20250052942A1 patent drawing
  • US20250052942A1 patent drawing

AI summary

An LED light source comprises a hollow longitudinally extending member which has a longitudinal axis that extends between the lower end and the upper end; a longitudinally extending member positioned internal of the hollow longitudinally extending member, the longitudinally extending member having an upper end through which light is receivable internal of the longitudinally extending member and a longitudinally extending outer surface wherein light is transmissible through the longitudinally extending outer surface; and, a light source that is moveable in a plane transverse to the longitudinal axis between a first position in which the light source is spaced from the upper end of the longitudinally extending member and an operating position in which the light source is located at the upper end of the longitudinally extending member.