Single Sintered Ceramic Wavelength Conversion Member
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Solution Overview
Problem
Existing wavelength conversion systems in projectors require multiple bonding steps and adhesive spaces, leading to increased costs and larger sizes due to the use of separate phosphor layers with different light emission characteristics, which complicates processing and size management.
Innovation Solution
A single sintered ceramic body with distinct areas containing different activator agents and base materials is used to create a wavelength conversion member that can be bonded in a single step, reducing costs and size by integrating the light emission characteristics into a single unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate phosphor layers with different light emission characteristics are used, then the wavelength conversion member can emit fluorescence having different tints, but the number of bonding steps increases and the device size increases
Solution Approach 1:
The patent combines multiple phosphor layers with different light emission characteristics into a single integrated wavelength conversion member. This single member contains multiple phosphor materials that can be selectively excited to produce different fluorescence tints, thereby reducing the number of bonding steps from multiple to just one, while maintaining the versatility of emitting different light colors.
Solution Approach 2:
The wavelength conversion member is designed to perform multiple functions within a single component. It can emit fluorescence having different tints by utilizing multiple phosphor materials with different light emission characteristics, making it a universal component that replaces what would traditionally require multiple separate phosphor layers.
2Adaptability or versatility
If multiple separate phosphor layers are used, then the wavelength conversion member can emit fluorescence having different tints, but the device size increases due to adhesive flow-out spaces
Solution Approach 1:
By merging multiple phosphor layers into a single integrated wavelength conversion member, the patent eliminates the need for adhesive flow-out spaces between separate layers. This integration significantly reduces the overall device size while maintaining the capability to emit different fluorescence tints through selective excitation of different phosphor materials within the same component.
3Manufacturing precision
If processing precision is limited, then spaces are created between members, but the wheel substrate size must increase to accommodate these spaces
Solution Approach 1:
The integration of multiple phosphor layers into a single wavelength conversion member eliminates the interfaces between separate members where spaces would form due to limited processing precision. This single-component design removes the need for additional clearance spaces, allowing for compact wheel substrate sizing even when manufacturing precision varies.
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 approach allows for efficient production of fluorescence with varying tints, reducing the projector's size and cost while maintaining high-quality image display by adjusting the tint of the emitted light through different areas within the sintered body.
Implementation Method 1
a wavelength conversion member formed of a single sintered body primarily made of a ceramic material, and has a first area and a second area having light emission characteristics different from each other
Data Source
AI summary
A wavelength conversion member formed of a single sintered body primarily made of a ceramic material has a first area and a second area having light emission characteristics different from each other.