Multi-Laser Light Source Module for Miniaturized Projection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-brightness projection devices require multiple light-emitting units of multi-color lasers, leading to increased space requirements and design complexities for optical, electrical, and heat conductivity, making it difficult to miniaturize the device and simplify light path designs.
Innovation Solution
A light source module with multiple laser source units, first and second light combining units, and a focusing lens, where the laser source units are arranged in a displaced configuration to allow independent heat dissipation and be on the same plane, and the light combining units ensure uniform incidence on the focusing lens, optimizing heat dissipation and light receiving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of light-emitting units of MCL is increased to achieve high brightness, then the brightness requirement is met, but the space requirements and design complexity increase
Solution Approach 1:
The patent combines multiple light-emitting units (first, second, third, and fourth light-emitting units) into a single integrated MCL module. The light combining units merge the light paths of these multiple units, allowing them to work together as one unified system rather than separate components, thereby reducing overall device complexity while maintaining high brightness output
Solution Approach 2:
The MCL module is designed to perform multiple functions simultaneously: it provides high brightness illumination while also integrating heat dissipation pathways and light combining capabilities. The light combining units serve both to merge light paths and to manage the optical configuration, reducing the need for separate dedicated components
2Illumination intensity
If the number of light-emitting units of MCL is increased to achieve high brightness, then the brightness requirement is met, but the space requirements increase
Solution Approach 1:
The patent employs a nested arrangement where the fourth light-emitting unit is positioned behind the first light-emitting unit, and the third light-emitting unit is positioned behind the second light-emitting unit. This nesting allows multiple light-emitting units to occupy overlapping or adjacent spatial regions, significantly reducing the overall footprint of the MCL module while maintaining the required number of light sources for high brightness
3Area of stationary object
If the light source module is miniaturized, then the device size is reduced, but the heat dissipation design becomes more difficult
Solution Approach 1:
The patent divides the heat dissipation function into separate, dedicated pathways for each light-emitting unit. Each unit has its own heat dissipation channel that leads to independent heat dissipation regions, allowing heat to be efficiently managed from multiple compact sources without requiring a complex centralized heat dissipation system. This segmentation enables effective heat management in a miniaturized configuration
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 enables miniaturization of the projection device and light source module with a simple light path design, improving heat dissipation and color performance by allowing independent heat dissipation and uniform light incidence on the focusing lens.
Implementation Method 1
The first light combining unit has a first reflection region and a first transmission region. The second light combining unit has a second reflection region and a second transmission region. The third laser beam is reflected by the second reflection region of the second light combining unit, and the fourth laser beam is reflected by the first reflection region of the first light combining unit.
Implementation Method 2
The focusing lens is located on transmission paths of the first laser beam, the second laser beam, the third laser beam and the fourth laser beam. The first laser beam, the second laser beam, the third laser beam and the fourth laser beam are respectively incident on the focusing lens along a first direction.
Data Source
AI summary
A light source module and a projection device are provided. The light source module is configured to provide a laser beam and includes multiple laser source units and a focusing lens. The laser source units include a first laser source unit, a second laser source unit, a third laser source unit and a fourth laser source unit respectively configured to provide a first laser beam, a second laser beam, a third laser beam and a fourth laser beam. The focusing lens is located on transmission paths of the first laser beam, the second laser beam, the third laser beam and the fourth laser beam. The first laser beam, the second laser beam, the third leaser beam and the fourth laser beam are respectively incident on the focusing lens along a first direction. The first laser source unit and the second laser source unit are arranged along a second direction.