Multi-Source Light Reflector Layout for Output State Detection
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Solution Overview
Problem
Existing light source devices lack the capability to effectively detect the output state of light emitted from multiple light sources.
Innovation Solution
A light source device comprising a reflective member with alternating reflective and transmissive surfaces and photodetectors to detect light output, allowing for the detection of light emitted from multiple light-emitting elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a stepped mirror is used to reflect light from multiple light sources, then light direction control is improved, but the ability to detect light output state from multiple sources deteriorates
Solution Approach 1:
The reflective member is divided into multiple reflective surfaces (first reflective surface, second reflective surface, etc.), each corresponding to a specific light-emitting element. This segmentation allows light from different sources to be reflected along different paths, enabling individual detection of each light source's output state without interference from other sources.
Solution Approach 2:
A photodetector is introduced as an intermediary component to detect the light output state. The photodetector receives light that has been reflected by the reflective surfaces and converts it into detectable signals, enabling precise measurement of the output state from multiple light-emitting elements simultaneously.
2Adaptability or versatility
If multiple light-emitting elements are arranged to emit light in different directions, then light distribution versatility is improved, but detection of individual light output states becomes more difficult
Solution Approach 1:
Each reflective surface is specifically configured to reflect light from its corresponding light-emitting element in a predetermined direction. This local optimization ensures that light from each source follows a distinct path, making it easier to detect individual output states while maintaining versatile light distribution capabilities.
Solution Approach 2:
The photodetector provides feedback information about the output state of each light-emitting element. This feedback mechanism enables real-time monitoring and detection of individual light sources, allowing for precise control and identification of any failures or malfunctions in the light-emitting elements.
3Manufacturing precision
If reflective surfaces are used to control light paths, then light direction precision is improved, but device complexity increases
Solution Approach 1:
The reflective member serves multiple functions: it acts as both a light reflecting component for direction control and as a structural element that defines the optical paths for detection. This multi-functionality reduces the need for separate components, thereby controlling device complexity while maintaining precise light path control.
Solution Approach 2:
The reflective surfaces and the detection system are integrated into a unified structure where the reflective member's geometry itself defines the detection paths. By merging the light control function with the detection path definition, the device complexity is reduced compared to having separate independent systems for each function.
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 precise detection of light output state, facilitating quick identification of failures or malfunctions in light-emitting elements and wavelength conversion components, ensuring consistent light quality.
Implementation Method 1
a reflective member including a plurality of reflective surfaces including a first reflective surface and a second reflective surface
Implementation Method 2
a first photodetector having a first light-receiving surface on which the first light that travels in the direction in which the reflective member is arranged and is transmitted through the first transmissive surface is irradiated
Data Source
AI summary
A light source device, including: a reflective member including a plurality of reflective surfaces including a first reflective surface and a second reflective surface, and one or more transmissive surfaces including a first transmissive surface that connects between the first reflective surface and the second reflective surface; a plurality of light-emitting elements including a first light-emitting element emitting first light that travels in a direction in which the reflective member is arranged to be incident on the first reflective surface, and a second light-emitting element emitting second light that travels in a direction in which the reflective member is arranged to be incident on the second reflective surface; and a first photodetector having a first light-receiving surface on which the first light that travels in the direction in which the reflective member is arranged and is transmitted through the first transmissive surface is irradiated.