Wavelength Conversion Element With Staggered Grooves for Heat Dissipation
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Solution Overview
Problem
Laser projectors face challenges in achieving effective heat dissipation due to high energy laser operation, which affects their operational performance and longevity.
Innovation Solution
A wavelength conversion element comprising a base plate with staggered grooves and through holes, connected to a rotating device, which creates air turbulence to dissipate heat and reduce temperature, enhancing operational performance and extending the device's working life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high energy laser is applied for high quality projecting display, then picture quality is improved, but heat generation increases causing poor heat dissipation
Solution Approach 1:
The patent applies pneumatic principles by introducing air flow channels (first grooves on the incident light side and second grooves on the opposite side) through the wavelength conversion element. These channels guide air flow to create convection currents that carry heat away from the fluorescent layer, effectively dissipating the heat generated by high energy laser operation while maintaining high picture quality.
Solution Approach 2:
The wavelength conversion element incorporates a porous structure with multiple air flow channels embedded within the wavelength conversion layer. This porous design allows air to penetrate and flow through the element, enhancing heat dissipation from the fluorescent layer without compromising the optical conversion function, thus resolving the contradiction between high illumination intensity and heat management.
2Temperature
If air flow channels are added to the base plate, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
The patent merges the heat dissipation function with the structural base plate by integrating air flow channels directly into the base plate structure. The first and second grooves are formed as part of the base plate itself, combining structural support and thermal management functions into a single component, thereby improving heat dissipation without proportionally increasing device complexity.
Solution Approach 2:
The base plate is designed with multi-functionality, serving both as the structural foundation for mounting the wavelength conversion layer and as a heat dissipation system through its integrated air flow channels. This universal design allows a single component to fulfill multiple roles, reducing overall device complexity while achieving effective thermal management.
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 reduces temperature and heat transfer, improving the operational performance and extending the lifespan of the wavelength conversion element by utilizing air turbulence to dissipate heat generated during laser irradiation.
Implementation Method 1
the rotating device is connected with the base plate and configured to drive the base plate to rotate about an axis along the rotating direction
Implementation Method 2
a turbulence is produced. This turbulence facilitates to reduce the temperature increased due to the irradiation of the laser on the fluorescent layer
Implementation Method 3
the air located at the side of the second surface will flow to the side of the first surface through the through holes. In this way, this flow of air from the second surface to the first surface will lead to the effect of heat isolation
Implementation Method 4
a fluorescent layer 200 is disposed on the first surface 111 of the base plate 110... the laser source 500 emits a laser L to the fluorescent layer 200... such that the fluorescent layer 200 can generate particular light rays
Data Source
AI summary
A wavelength conversion element includes a base plate and a rotating device. The base plate has a first surface and a second surface. The first surface is configured to allow a fluorescent layer to dispose on. The base plate includes some first grooves and some second grooves. The first grooves are disposed on the first surface around a center of the base plate. The second grooves are disposed on the second surface around the center. The first grooves and the second grooves are staggered from each other along a rotating direction. The base plate has some through holes. Each of the through holes communicates with the second surface and the corresponding first groove. The rotating device is connected with the base plate and configured to drive the base plate to rotate about an axis along the rotating direction. The axis passes through the center.