Light Source Device Scattering Unit for Stable Output Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light source devices with multiple emission units face challenges in maintaining stable light output due to intensity exceeding detection limits, leading to inconsistent image display in image display apparatus.
Innovation Solution
Incorporating a scattering or absorbing unit to reduce light intensity, combined with a light detecting unit for collective output control, ensuring the light source device supplies a stable light amount by scattering or absorbing excess light, allowing for appropriate automatic power control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light emission units are collectively driven to obtain sufficient light amount, then the total light output increases, but the light intensity exceeds the detection limit of the light receiving element, making output control difficult
Solution Approach 1:
The patent divides the light detection function into multiple light receiving elements, each responsible for detecting light from specific light emission units. This segmentation allows each element to operate within its detection range while collectively monitoring the entire light output, resolving the contradiction between high total light output and detection accuracy.
Solution Approach 2:
The patent introduces a beam splitter as an intermediary component that divides the combined light from multiple emission units into separate detection paths. This intermediary allows the light to be distributed to multiple detectors, enabling accurate detection of high-intensity light without overloading a single receiving element.
2Measurement precision
If light from multiple light emission units is branched for detection, then detection can be performed, but light having intensity exceeding the detection limit enters the light receiving element, making it difficult to keep the output constant
Solution Approach 1:
The patent uses multiple light receiving elements to detect only partial portions of the total light output, with each element detecting light within its optimal intensity range. This partial detection approach allows the system to handle high total light intensity while maintaining accurate measurement of each portion.
Solution Approach 2:
The detection system is segmented into multiple independent light receiving elements, each monitoring specific light emission units. This segmentation prevents any single element from receiving excessive light intensity while ensuring complete coverage of the total light output for accurate control.
3Device complexity
If a single light receiving element is used to detect light from multiple light emission units, then the structure is simple, but the detection limit is exceeded when high intensity light is emitted
Solution Approach 1:
The patent segments the detection system into multiple light receiving elements distributed to detect light from different emission units. This segmentation increases system reliability by ensuring that no single element is overloaded, while maintaining relatively simple individual element structures.
Solution Approach 2:
The patent combines the detection capabilities of multiple light receiving elements to achieve comprehensive monitoring of all light emission units. This merging approach maintains output stability by ensuring complete light coverage while keeping individual detector complexity low.
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
The solution stabilizes light output from multiple emission units, preventing intensity overload and ensuring consistent image brightness in image display apparatus, thereby enhancing display quality and reducing power consumption.
Implementation Method 1
a scattering unit which scatters at least a part of light received from the plural light emission units
Implementation Method 2
an absorbing unit which absorbs at least a part of light received from the plural light emission units
Data Source
AI summary
A light source device includes: a plurality of light emission units which emit light; a scattering unit which scatters at least a part of light received from the plural light emission units; a light detecting unit which detects a part of light emitted from the plural light emission units and scattered by the scattering unit; and a control unit which controls the plural light emission units based on detection result from the light detecting unit.