Wavelength Conversion Module Heat Insulation for Laser Projectors
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Solution Overview
Problem
The existing solid state illumination laser (SSI Laser) projectors with phosphor wheels face reliability issues due to heat degradation from balancing substances or glue in metal weight rings, leading to vibration, noise, and reduced service life, along with increased production costs and complexity.
Innovation Solution
A wavelength conversion module with a rotating plate featuring separate heat insulation and dissipation regions, where the heat insulation region is located on one side corresponding to the driver and the heat dissipation region on the other side, preventing heat transfer to the driver and weight member, and potentially replacing the weight member with an annular recess hole to simplify the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a metal weight ring with balancing substances or glue is assembled to the phosphor wheel for balance correction, then the balance of the rotating structure is improved, but the heat from the heat dissipation substrate degrades the balancing substances or glue, reducing reliability and service life
Solution Approach 1:
The rotating plate is divided into distinct heat insulation regions and heat dissipation regions that do not overlap. The heat insulation region is specifically positioned at the connection location of the weight member, separating the heat-generating phosphor wheel from the heat-sensitive balancing substances, thereby preventing thermal degradation while maintaining balance correction functionality
Solution Approach 2:
A heat insulation layer is introduced as an intermediary between the heat dissipation substrate and the weight member connection region. This heat insulation layer acts as a thermal barrier, blocking heat transfer to the balancing substances or glue in the weight member, thus protecting them from thermal degradation while allowing the weight member to perform its balancing function
2Stability of the object's composition
If a metal weight ring structure is used for balance correction, then the balance of the rotating structure is improved, but the structure becomes more complicated and production cost increases
Solution Approach 1:
The weight member is integrated directly into the rotating plate as a unified structure rather than being a separate assembled component. The rotating plate includes a connection position for the weight member, and the weight member is attached to the rotating plate, forming an integrated balance correction system that simplifies the overall structure and reduces assembly complexity
Solution Approach 2:
The rotating plate serves multiple functions: it acts as the structural base for the phosphor wheel, provides heat dissipation through dedicated regions, and incorporates balance correction functionality through the integrated weight member. This multi-functionality eliminates the need for separate balance correction components, simplifying the overall structure
3Device complexity
If the phosphor wheel structure is simplified without proper heat insulation, then production cost is reduced, but heat transfer to the driver and weight member causes degradation and vibration
Solution Approach 1:
Heat insulation is applied locally only where needed - specifically at the connection positions of the driver and weight member on the rotating plate - rather than insulating the entire structure. This localized approach maintains overall structural simplicity and allows heat dissipation in non-critical areas while protecting sensitive components from thermal degradation
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 reliability and service life of the wavelength conversion module and projector by effectively blocking heat transfer and reducing vibration and noise, while also simplifying the structure and lowering production costs.
Implementation Method 1
The rotating plate includes a heat insulation region and a heat dissipation region. The heat insulation region and the heat dissipation region do not overlap each other. The heat insulation region includes a first heat insulation region and a second heat insulation region. The first heat insulation region is located at the first side of the rotating plate and corresponds to a connection position of the driver. The second heat insulation region is located at the second side of the rotating plate and corresponds to a connection position of the weight member.
Implementation Method 2
The rotating plate includes a heat insulation region and a heat dissipation region. The heat insulation region and the heat dissipation region do not overlap each other.
Data Source
AI summary
A wavelength conversion module including a wavelength conversion wheel, a driver, and a weight member is provided. The wavelength conversion wheel includes a rotating plate, and the rotating plate has a first side and a second side opposite to each other. The driver is connected to the first side of the rotating plate, and drives the rotating plate to rotate around a rotation shaft of the driver as an axis. The weight member is attached to the second side of the rotating plate and rotates synchronously with the rotating plate. The rotating plate comprises a heat insulation region and a heat dissipation region. The heat insulation region and the heat dissipation region do not overlap each other. The heat insulation region comprises a first heat insulation region located at the first side and a second heat insulation region located at the second side.