Multi-Plane Light Source Assembly for High Luminance and Thermal Management

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Solution Overview

Problem

Designing a light source assembly with high luminance is challenging due to the need for multiple light sources within a limited space, and existing solutions are sensitive to temperature variations, requiring efficient cooling methods.

Innovation Solution

A light source assembly is designed with first and second light sources disposed on separate planes with a preset interval, where the second light sources emit light between the first light sources, and a lens concentrates the combined light, while a heat transfer unit is used to manage temperature distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If multiple light sources are disposed within a limited space to achieve high luminance, then the luminance is improved, but the temperature management becomes more difficult

Engineering Contradiction:
ImproveluminanceVSAvoidtemperature management
Core Design Contradiction:
Illumination intensityVSTemperature

Solution Approach 1:

The patent transitions from a single-plane light source arrangement to a multi-plane three-dimensional configuration. First light sources are disposed on a first plane while second light sources are disposed on a second plane spaced apart from the first plane, creating a vertical dimension for heat dissipation and light emission that improves luminance while facilitating temperature management.

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

Solution Approach 2:

The light source assembly is segmented into multiple independent light sources arranged in specific patterns on different planes. First light sources are arranged in a first pattern on the first plane, and second light sources are arranged in a second pattern on the second plane, allowing independent thermal and optical optimization of each segment.

Inventive Principle:
Principle #1Segmentation

2Illumination intensity

If multiple light sources are disposed within a limited space to achieve high luminance, then the luminance is improved, but the structural design complexity increases

Engineering Contradiction:
ImproveluminanceVSAvoidstructural design
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

By utilizing vertical spacing between two planes, the patent accommodates more light sources without increasing the horizontal footprint. The second plane is positioned at a distance from the first plane such that light from second light sources passes through spaces between first light sources, creating an interlaced three-dimensional structure that maximizes space utilization.

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

Solution Approach 2:

The patent creates a nested arrangement where second light sources on the second plane are positioned to emit light through the spaces between first light sources on the first plane. This nested configuration allows light paths to interlace without requiring additional horizontal space, effectively nesting the second plane's light sources within the spatial envelope defined by the first plane's light sources.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 achieves higher luminance, energy uniformity, and efficient cooling, allowing for a projector with improved performance and temperature management.

Implementation Method 1

a lens configured to concentrate light emitted from the plurality of first and second light sources

Methodology Applied
Scientific EffectLight concentration: Lens

Implementation Method 2

a heat transfer unit inserted into at least one of the first and second bodies and disposed between at least one of the first and second lines, to transfer heat generated from at least one of the first and second light sources

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Data Source

PatentUS9360745B2Light source assembly and projector having the same
Publication Date: 2016.06.07 LG ELECTRONICS INC
  • US9360745B2 patent drawing
  • US9360745B2 patent drawing
  • US9360745B2 patent drawing

AI summary

A light source assembly includes a plurality of first light sources disposed on a first plane to emit light, a plurality of second light sources disposed on a second plane, the second plane spaced apart from the first plane with a preset interval, wherein each second light source emits light between the adjacent first light sources, and a lens configured to concentrate light emitted from the plurality of first and second light sources. A projector having the light source assembly is also provided.