Light Source Apparatus Heat Dissipation via Resin Layer
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Solution Overview
Problem
The existing light source apparatuses face challenges in effectively dissipating heat from phosphors, leading to potential damage due to inadequate heat dissipation structures.
Innovation Solution
The proposed light source apparatus incorporates a substrate with a heat dissipating member, sub-mounts to reduce thermal stress, and a configuration where light emitters and wavelength converters are positioned to facilitate efficient heat transfer, along with dichroic films and optical elements that guide and separate excitation and fluorescence light paths, enhancing heat dissipation and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the phosphor is in contact with a transmissive member to discharge heat, then heat dissipation is enabled, but the heat cannot be sufficiently dissipated
Solution Approach 1:
A resin layer is introduced as an intermediary substance between the phosphor and the heat dissipation structure. The resin layer has thermal conductivity properties that enable effective heat transfer from the phosphor to the heat dissipation member, resolving the insufficient heat dissipation issue while maintaining reliable operation
Solution Approach 2:
The thermal conductivity parameter of the medium between phosphor and heat dissipation structure is changed by using a resin layer with specific thermal properties. This parameter change enables sufficient heat dissipation while maintaining the structural integrity and reliability of the light source apparatus
2Volume of moving object
If multiple components are integrated to improve compactness, then device size is reduced, but heat dissipation efficiency may be compromised
Solution Approach 1:
Multiple functional components including the phosphor, resin layer, heat dissipation member, and optical elements are merged into a single integrated structure. This merging achieves compact device size while the resin layer ensures continuous heat dissipation pathways are maintained, preventing heat accumulation in the compact configuration
Solution Approach 2:
The resin layer serves multiple functions simultaneously: it acts as an adhesive bonding the phosphor to the heat dissipation member, provides a thermal conduction pathway for heat dissipation, and maintains the structural integrity of the compact integrated design. This multi-functionality enables compactness without sacrificing heat dissipation efficiency
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 improves heat dissipation performance, reduces the size of the light source apparatus, and efficiently utilizes fluorescence, thereby preventing damage from heat and achieving a compact, high-performance light source.
Implementation Method 1
a wavelength converter that is provided at the substrate, is accommodated in the accommodation space, converts first light emitted from the light emitter into second light having a wavelength different from a wavelength of the first light, and outputs the second light
Implementation Method 2
a first optical film that is provided in a light path between the light emitter and the wavelength converter, transmits one of the first light and the second light, and reflects another one of the first light and the second light
Data Source
AI summary
A light source apparatus according to an aspect of the present disclosure includes a substrate having a first surface, a frame, a lid with which the frame is provided, a light emitter that is accommodated in an accommodation space, a wavelength converter that is provided at the substrate, is accommodated in the accommodation space, converts first light emitted from the light emitter into second light having a wavelength different from the wavelength of the first light, and outputs the second light, and a first optical film that is provided in the light path between the light emitter and the wavelength converter, transmits one of the first light and the second light, and reflects the other one of the first light and the second light, and the light emitter emits the first light in such a way that the chief ray of the first light travels along the first surface.