Light Source Device LD Chip Optimization
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Solution Overview
Problem
The existing light source devices using laser modules have limited design flexibility and low light utilization efficiency due to the fixed number of LD chips per module, making it difficult to optimize the ratio of blue light source to excitation light source and resulting in increased power consumption.
Innovation Solution
A light source device configuration that includes a first and second light source unit emitting monochromatic light, an optical member to split and integrate these lights, and a phosphor unit to emit fluorescent light, allowing for adjustable light quantity ratios and improved light utilization efficiency by optimizing the number of LD chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a laser module with fixed number of LD chips is used, then device cost is reduced, but the degree of freedom of design is low and optimization of LD chip number is difficult
Solution Approach 1:
The invention divides the laser module into separate blue light source unit and excitation light source unit, each with independent LD chip arrays. This segmentation allows flexible configuration of LD chip numbers in each unit to achieve the desired ratio relationship, while still using cost-effective laser module packages for each unit.
Solution Approach 2:
The invention enables dynamic adjustment of the ratio between blue light and excitation light by independently controlling the number of LD chips in each unit. This dynamic design flexibility allows optimization of the light ratio without being constrained by fixed module configurations.
2Manufacturing precision
If a laser module with larger accommodation number of LD chips is used, then the required number of LD chips can be met, but light utilization efficiency is reduced and power consumption increases
Solution Approach 1:
The invention uses only the necessary number of LD chips in each unit to achieve the desired light ratio, rather than using all LD chips in an oversized module. This partial action approach ensures that exactly the required amount of light is generated, improving light utilization efficiency and reducing power consumption.
Solution Approach 2:
The invention changes the parameter of LD chip number from a fixed module-level parameter to an adjustable unit-level parameter. By independently setting the number of LD chips in blue light source and excitation light source units, the system optimizes light output parameters to match exact requirements, eliminating waste from oversized configurations.
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
Enables easy optimization of LD chip numbers and enhances light utilization efficiency by adjusting the light quantity ratios between excitation and blue light sources, reducing unnecessary power consumption and achieving desired color tones.
Implementation Method 1
an optical member that splits the first monochromatic light emitted by the first light source unit into a first split light and a second split light
Implementation Method 2
integrates the first split light and the second monochromatic light emitted by the second light source unit into one optical path
Implementation Method 3
a phosphor unit that receives the second split light or the light that has been integrated into the one optical path to emit fluorescent light
Data Source
AI summary
A light source device is provided in which the number of LD chips can be easily optimized and that has a high light utilization efficiency. The light source device includes a first light source unit that emits a first monochromatic light, a second light source unit that emits a second monochromatic light of the same color as the first monochromatic light, an optical member that splits the first monochromatic light emitted by the first light source unit into a first split light and a second split light and that integrates the first split light and the second monochromatic light emitted by the second light source unit into one optical path, and a phosphor unit that receives the second split light or the integrated light to emit fluorescent light.