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
Engineering Contradiction Analysis
1Device complexity
If LEDs are distributed uniformly across the light emitting surface, then the structure is simple, but illumination evenness deteriorates
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
2Device complexity
If light emitting locations are concentrated at one end, then the structure is simple, but illumination evenness deteriorates
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
3Manufacturing precision
If the cartridge is fixed rigidly, then positioning precision is improved, but ease of replacement deteriorates
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
4Ease of repair
If the cartridge is made removable, then ease of replacement is improved, but positioning precision deteriorates
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
5Area of stationary object
If light is emitted uniformly across the entire light guide, then illumination coverage is improved, but light directionality deteriorates
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
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
Implementation Method 2
A light-emitting diode (LED) is a semiconductor light source that emits light when activated
Data Source
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.


