Adjustable Lens Module for Projection Alignment
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Solution Overview
Problem
Existing projection devices face challenges in aligning the lens and light valve effectively, which affects the projection quality.
Innovation Solution
A position-adjustable lens module with a moving assembly, sliding members, and knobs that allow the lens unit to be precisely aligned with the light valve by moving along guide slots and inclined surfaces, enabling adjustment of the lens position for improved image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lens position is fixed in the projection device, then the device structure is simple, but the alignment between the lens and light valve is difficult to adjust
Solution Approach 1:
The patent makes the lens unit movable by providing a moving assembly that can adjust the lens position along the optical axis and in lateral directions. The fixing seat includes guide slots and the moving assembly includes sliding members that enable the lens unit to be dynamically repositioned to achieve proper alignment with the light valve, resolving the contradiction between fixed structure simplicity and alignment adjustability.
2Manufacturing precision
If the lens unit is made movable with adjustment mechanisms, then the alignment with light valve is improved, but the device complexity increases
Solution Approach 1:
The patent divides the adjustment function into separate independent mechanisms: the moving assembly handles lateral positioning while the adjusting mechanism handles optical axis alignment. This segmentation allows each subsystem to be optimized independently and simplifies the overall control, reducing the complexity burden despite the added precision capabilities.
Solution Approach 2:
The patent introduces a moving assembly as an intermediary component between the fixed mounting structure and the lens unit. This intermediary provides the necessary degrees of freedom for precise positioning while maintaining a clear separation between the movable lens unit and the fixed light valve, simplifying the adjustment process and reducing overall system complexity.
3Ease of operation
If complex adjustment mechanisms are added to the lens module, then the alignment capability is enhanced, but the manufacturing cost increases
Solution Approach 1:
The patent designs the moving assembly and adjusting mechanism to be manually operable without requiring complex motors or automated control systems. The simple mechanical structures can be easily manufactured and assembled, reducing production costs while still providing effective alignment capabilities that improve ease of operation during installation and maintenance.
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 adjustable lens module ensures better alignment with the light valve, enhancing the projection quality and simplifying the alignment process, while maintaining a cost-effective and straightforward design.
Implementation Method 1
the moving assembly includes a first inclined surface. The first sliding member includes a second inclined surface adjacent to the first inclined surface. When the first knob is rotated, the first sliding member is driven to move along the second axis, and the second inclined surface pushes against the first inclined surface, so that the moving assembly, together with the lens unit, is moved relative to the fixing seat along the first axis
Data Source
AI summary
A lens module includes a fixing seat, a moving assembly, a lens unit, a first sliding member, a first knob, and a first fixing member. The fixing seat has a first guide slot extended along a first axis. The moving assembly is disposed on the fixing seat and includes a first inclined surface. The lens unit is fixed to the moving assembly. The first sliding member is movably disposed on the fixing seat along a second axis and connected to the moving assembly, and the first sliding member includes a second inclined surface. The first knob is disposed on the fixing seat and connected to the first sliding member, and the first knob is configured to drive the first sliding member to move relative to the fixing seat. The first fixing member passes through the moving assembly and the first guide slot and is fixed on the fixing seat.