Wavelength Conversion Module Balance Correction via Substrate Holes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing projection devices with phosphor wheels face reliability issues due to the degradation of glue used to fix the metal weight ring to the heat dissipation substrate, leading to vibration, noise, and reduced service life.
Innovation Solution
A wavelength conversion module with a metal substrate that integrates a driving assembly, concave-convex structures, a transparent plate, and a wavelength conversion layer, which achieves balance correction and heat dissipation without the need for a metal weight ring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a metal weight ring is added to the phosphor wheel structure for balance correction, then the balance performance is improved, but the device complexity and production cost increase
Solution Approach 1:
The patent combines the balance correction function with the heat dissipation substrate by integrating balance correction holes directly into the substrate structure. This merging eliminates the need for separate metal weight rings while achieving both balance correction and heat dissipation functions through a unified structure.
Solution Approach 2:
The heat dissipation substrate is designed to serve multiple functions: heat dissipation, balance correction, and structural support. By incorporating balance correction holes into the substrate, the same component performs both thermal management and rotational balance functions, reducing overall device complexity.
2Stability of the object's composition
If a metal weight ring is fixed to the heat dissipation substrate through gluing, then the balance correction is achieved, but the reliability decreases due to glue degradation from heat
Solution Approach 1:
The balance correction holes are integrated directly into the heat dissipation substrate structure, eliminating the need for separate balance correction components and adhesive bonding. This integration ensures that balance correction is achieved through the substrate's own structure, which is inherently more reliable under thermal conditions.
Solution Approach 2:
The balance correction holes act as intermediary structures that provide both balance correction and mechanical anchoring for the transparent glass. By using the substrate's own structure as the mediator, the design eliminates the need for external adhesives that would degrade under heat.
3Shape
If a groove is provided on the heat dissipation substrate to accommodate transparent glass, then the glass positioning is improved, but the structural reliability decreases without additional fixing components
Solution Approach 1:
The groove structure is combined with balance correction holes to create a multi-functional feature that both positions the transparent glass and provides mechanical fixing through the balance correction holes. This integration ensures reliable fixing without requiring additional components.
Solution Approach 2:
The groove and balance correction hole structure serves dual purposes: positioning the transparent glass during assembly and providing mechanical anchoring through the balance correction holes. This multi-functional design achieves both positioning and reliable fixing through a single integrated structure.
4Ease of manufacture
If the phosphor wheel structure is simplified by removing the metal weight ring, then the production cost is reduced, but vibration and noise increase during operation
Solution Approach 1:
The balance correction holes are integrated into the heat dissipation substrate, combining balance correction with the substrate structure. This eliminates the need for separate metal weight rings, reducing production cost while preventing vibration and noise through proper structural design.
Solution Approach 2:
The design changes the structural parameters of the heat dissipation substrate by incorporating holes at specific positions and dimensions. These parameter changes enable the substrate to perform balance correction functions, maintaining operational stability without requiring additional components.
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 design enhances the structural reliability, reduces production costs, and extends the service life of the projection device by eliminating the need for gluing and simplifying the phosphor wheel structure.
Implementation Method 1
The wavelength conversion layer receives the excitation beam and generates a converted beam
Implementation Method 2
The driving assembly is connected to the substrate and drives the substrate to rotate around the center of the substrate
Implementation Method 3
The substrate is a metal substrate... the substrate, the first concave-convex structure and the second concave-convex structure are integrally formed
Data Source
AI summary
Provided is a wavelength conversion module including a driving assembly, a metal substrate, a first and a second concave-convex structure, a transparent plate, and a wavelength conversion layer. The driving assembly is connected to the substrate and drives the substrate to rotate. The substrate and the first and the second concave-convex structure are integrally formed. The first and the second concave-convex structure are disposed around the center, and the second concave-convex structure surrounds the first concave-convex structure. The substrate has a first balance hole and an accommodating groove. The first concave-convex structure is located between the accommodating groove and the center. The first balance hole is located in the accommodating groove and penetrates the substrate. The transparent plate is disposed in the accommodating groove of the substrate and covers the first balance hole. The wavelength conversion layer is arranged in an annular pattern with the transparent plate.