Light Source Module with Rotating Reflector for Heat Dissipation
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Solution Overview
Problem
Optical projectors face increasing heat dissipation challenges due to rising brightness requirements, which conventional light source modules struggle to address effectively.
Innovation Solution
A light source module featuring a stationary fluorescent ring with rotating reflectors and dichroic mirrors, allowing for efficient heat dissipation through flexible thermal connections and dust isolation within an enclosed housing, enabling the use of higher power light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light source power is increased to meet brightness requirements, then the illumination intensity is improved, but the heat dissipation difficulty increases
Solution Approach 1:
The patent inverts the conventional design by making the fluorescent ring stationary and the reflector rotating. This allows the fluorescent ring to be firmly thermally connected to the housing for efficient heat dissipation, while the rotating reflector sweeps the light beam across the stationary fluorescent material, achieving both high brightness and effective heat management.
Solution Approach 2:
The patent extracts the rotating component (reflector) from the fluorescent ring structure, allowing the fluorescent ring to remain stationary and be thermally connected to the housing. This separation enables independent optimization of both the light generation (stationary fluorescent ring with heat dissipation) and light delivery (rotating reflector) functions.
2Temperature
If the fluorescent material is coated on a rotating wheel for heat dissipation, then the heat dissipation is improved, but the excitation efficiency decreases due to reduced energy reception
Solution Approach 1:
Instead of rotating the fluorescent wheel to achieve heat dissipation, the patent inverts the approach by keeping the fluorescent ring stationary for both optimal energy reception and heat dissipation, while rotating the reflector to achieve the desired light beam scanning and heat management.
Solution Approach 2:
The patent extracts the rotation function from the fluorescent ring and assigns it to the reflector. This allows the fluorescent ring to remain stationary and receive maximum energy from the light source, while the rotating reflector handles the heat dissipation and light beam scanning functions.
3Temperature
If the fluorescent ring is made stationary with thermal connection to housing, then the heat dissipation is improved, but the light beam scanning capability is lost
Solution Approach 1:
The rotating reflector serves multiple functions: it scans the light beam across the projection surface to create dynamic light patterns, and simultaneously enables heat dissipation from the stationary fluorescent ring by allowing the housing to act as a heat sink. This multi-functional design resolves the contradiction between heat dissipation and light beam scanning.
4Object-affected harmful factors
If an enclosed housing is used to isolate dust, then the contamination prevention is improved, but the heat dissipation path is restricted
Solution Approach 1:
The patent uses the housing as both a protective enclosure against dust and a thermal management component. The housing encloses the light source and fluorescent ring to prevent dust contamination, while simultaneously providing a thermal connection path for heat dissipation from the stationary fluorescent ring, demonstrating multi-functional design.
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 enables faster heat dissipation and improved excitation efficiency by utilizing rotating reflectors and stationary fluorescent rings, allowing for higher power light sources and preventing contamination, thus enhancing projector performance.
Implementation Method 1
The reflector is configured to reflect the light to form a light spot on the inner surface
Implementation Method 2
light can be generated by a fluorescent material excited by a solid-state laser light source
Implementation Method 3
the motor can be used to drive the wheel to rotate at a high speed, so that energy of the laser light source received by a local part of the fluorescent material in a unit time is reduced, thereby achieving the purpose of heat dissipation
Data Source
AI summary
A light source module includes a light source, a fluorescent ring, a reflector, and a driving device. The light source is configured to emit light. The fluorescent ring has an inner surface. The reflector is configured to reflect the light to form a light spot on the inner surface. The driving device is configured to rotate the reflector to cause the light spot to move along a circular path on the inner surface.