Projector Lens Module Position Adjustment Mechanism
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Solution Overview
Problem
Current movable lens modules for projectors, which rely on two moving plates for horizontal and vertical movement, face challenges such as high cost, structural complexity, and difficulty in production, leading to compromised movement accuracy and imaging stability due to the plates' inability to be highly parallel.
Innovation Solution
A projector design incorporating a lens module with a position adjustment device and sliding components, where the lens is fixed to a plate with sliding members and distance adjustment members, allowing for precise movement in two directions without direct contact between the plate and light engine housing, ensuring parallel alignment and reducing friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two movable plates are used for horizontal and vertical movement, then the lens module can be moved in two directions, but the structure becomes complex and costly
Solution Approach 1:
The patent combines the functions of two separate movable plates (horizontal and vertical movement) into a single integrated movable plate. This single plate achieves both horizontal and vertical movement capabilities through a unified structure, eliminating the need for separate plates and reducing overall structural complexity while maintaining full bidirectional movement functionality.
Solution Approach 2:
The single movable plate is designed to perform multiple functions simultaneously - it provides both horizontal movement and vertical movement capabilities. This multi-functional plate replaces what would traditionally require two specialized plates, simplifying the structure while maintaining adaptability for movement in both directions.
2Adaptability or versatility
If two movable plates are used for horizontal and vertical movement, then the lens module can be moved in two directions, but the cost increases
Solution Approach 1:
By merging the horizontal and vertical movement functions into a single movable plate, the patent reduces the total number of components that need to be manufactured and assembled. This consolidation directly reduces material costs, manufacturing labor, and assembly complexity, making the system more cost-effective while preserving full bidirectional movement capability.
3Adaptability or versatility
If two movable plates are used for horizontal and vertical movement, then the lens module can be moved in two directions, but the movement accuracy and imaging stability are compromised
Solution Approach 1:
The integrated single movable plate eliminates the interface between two separate plates, removing the parallelism and alignment errors that would exist at their junction. This unified structure provides a single reference plane that maintains high precision throughout both horizontal and vertical movements, significantly improving movement accuracy and imaging stability compared to a two-plate system.
4Device complexity
If the plate directly contacts the light engine housing, then the structure is simple, but friction causes damage and reduces reliability
Solution Approach 1:
The patent introduces sliding components as intermediary elements between the movable plate and the light engine housing. These sliding components act as mediators that enable smooth relative movement while minimizing direct friction and wear between the plate and housing. This intermediary mechanism protects the housing from damage while maintaining structural simplicity and improving reliability.
5Reliability
If sliding components are introduced between the plate and light engine housing, then friction damage is reduced, but the structure becomes more complex
Solution Approach 1:
The sliding components are designed as simple intermediary elements that provide low-friction movement surfaces. While they do add components to the structure, their function is straightforward and they can be implemented as simple sliding surfaces or low-complexity bearings, minimizing the increase in structural complexity while providing significant protection against friction damage and improving reliability.
Data Source
AI summary
The invention discloses a projector, including a light source, a light engine module and a lens module. The lens module includes a plate, a lens, at least two sliding components and a first position adjustment device. The sliding components are disposed between the plate and a light engine housing and located respectively at a first position and a second position of the light engine housing. Each of the sliding components has a sliding member and a distance adjustment member. The plate is movably disposed on the light engine housing via the sliding member. The distance adjustment members are in contact with the sliding members respectively. The first position adjustment device is movably disposed between the plate and the light engine housing. The invention further discloses a lens module. The invention can improve movement accuracy and imaging stability of a projector and a lens module.