Elastic Sealing for Projector Light Source Dust Protection
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Solution Overview
Problem
Existing light source devices for projectors using fluorescent materials face degradation due to dust adherence and adhesive agent gases, which compromise sealability and performance.
Innovation Solution
A light source device with a wavelength conversion element and a supporting substrate, where an elastic member is used to surround and protect the fluorescent material, eliminating the need for adhesive agents and enhancing dustproofing by sealing the optical path without adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an adhesive agent is used for the sealed portion to increase sealability, then sealability is improved, but the fluorescent material may be degraded due to gas generated from the adhesive agent
Solution Approach 1:
The patent removes the adhesive agent from the sealing structure entirely. The sealing is achieved through the elastic member (rubber band) that elastically deforms to seal between the supporting substrate and housing part, eliminating the source of harmful gases that would otherwise degrade the fluorescent material.
Solution Approach 2:
The elastic member serves as an intermediary sealing element between the supporting substrate and housing part. It provides the sealing function without requiring adhesive agents, using its elastic deformation capability to create a dustproof and gas-tight seal that protects the fluorescent material.
2Object-affected harmful factors
If a dustproof structure with plate and lens in close contact is employed, then dust protection is improved, but the structure complexity increases
Solution Approach 1:
The patent uses an elastic member (flexible element) that elastically deforms to create a dustproof seal between the supporting substrate and housing part. This flexible sealing approach is simpler than rigid plate-and-lens close-contact structures, as it accommodates manufacturing tolerances and assembly variations without requiring precision alignment.
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 effectively prevents dust from reaching the fluorescent material, reduces degradation, and maintains high sealability, leading to reliable and long-lasting high-brightness image projection.
Implementation Method 1
an elastic member which elastically deforms and seals between the supporting substrate and the housing part
Implementation Method 2
a wavelength conversion element having a fluorescent material that light output from the light source enters
Data Source
AI summary
A light source device of the present disclosure includes a light source, a wavelength conversion element having a fluorescent material that a light output from the light source enters and a supporting substrate that supports the fluorescent material, an optical element guiding the light output from the light source to the fluorescent material, a holding member holding the optical element, and a housing part providing a housing space in an optical path of the light output from the light source and housing at least the optical element and the holding member in the housing space, wherein the supporting substrate is fixed to the holding member, the holding member is fixed to the housing part, and an elastic member is provided between the supporting substrate and the holding member.