Lens Module Rib Structure Two-Axis Adjustment
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Solution Overview
Problem
Conventional projection devices require multiple moving plate assemblies to achieve two-dimensional lens movement, leading to increased assembly elements, space occupation, and accumulated assembly tolerances that hinder smooth operation.
Innovation Solution
A lens module with a single moving member, comprising a first base with rib structures and adjustment members, allows for independent movement along different axes without interference, simplifying components, reducing space and manufacturing costs, and minimizing assembly tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple moving plate assemblies are used to control horizontal and vertical lens movement, then the lens can achieve two-dimensional movement, but the number of assembling elements increases and space is occupied
Solution Approach 1:
The patent merges the horizontal and vertical movement control functions into a single moving plate assembly. This single assembly contains both a first adjustment member for horizontal movement and a second adjustment member for vertical movement, eliminating the need for separate assemblies while maintaining full two-dimensional lens positioning capability.
Solution Approach 2:
The single moving plate assembly serves multiple functions: it controls both horizontal and vertical lens movement, and it interfaces with both the first rib structure (for horizontal movement) and the second rib structure (for vertical movement). This multi-functional design reduces the overall number of components needed in the system.
2Adaptability or versatility
If multiple assembling elements are used for lens positioning, then comprehensive movement control is achieved, but assembly tolerances accumulate and smooth operation is hindered
Solution Approach 1:
By combining multiple adjustment members and rib structures into a single integrated moving plate assembly, the patent reduces the number of interfaces where tolerances could accumulate. The single assembly design minimizes the cumulative effect of manufacturing tolerances while maintaining comprehensive lens positioning control.
3Adaptability or versatility
If multiple moving plate assemblies are used, then complete movement control is achieved, but space occupied by assembling elements increases
Solution Approach 1:
The patent consolidates multiple moving plate assemblies into a single compact assembly that performs all necessary movement control functions. This single assembly occupies significantly less space than multiple separate assemblies would require, while still providing complete horizontal and vertical lens positioning capability.
Data Source
AI summary
A lens module includes a first base, a lens assembly assembled on the first base, a second base stacked on the first base, a first adjustment member, and a second adjustment member. The first base has at least one first rib structure extending along a second axis, and at least one second rib structure extending along a first axis. The first adjustment member is movably engaged with the first rib structure along the first axis. The second adjustment member is movably engaged with the second rib structure along the second axis. When the first base moves along the first axis, the second adjustment member avoids the second rib structure. When the first base moves along the second axis, the first adjustment member avoids the first rib structure. A projection device is also provided.