Projector Lens Adjusting Device with Integrated Frame and Groove Slider
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Solution Overview
Problem
Conventional lens adjusting devices for projectors are overly complex, requiring multiple frames and guiding bars, which increase cost, weight, and space requirements while being inefficient.
Innovation Solution
A simplified lens adjusting device with a base, frame, and positioning structures that include a groove, slider, and positioning unit, reducing the number of frames and replacing guiding bars with a smaller, more efficient positioning system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If two separate frames and four guiding bars are used to adjust the lens, then lens adjustment functionality is achieved, but device complexity, cost, weight, and space requirements increase
Solution Approach 1:
The patent merges two separate frames (vertical adjusting frame and horizontal adjusting frame) into a single integrated frame structure. The frame includes a vertical adjusting portion and a horizontal adjusting portion that work together as one unified component, eliminating the need for separate frames and reducing overall structural complexity while maintaining lens adjustment functionality in both vertical and horizontal directions
Solution Approach 2:
The patent extracts and eliminates the guiding bars from the structure by incorporating their guiding function directly into the frame design. The frame's adjusting portions include built-in guiding features that constrain movement along specific axes, removing the need for separate guiding bar components and simplifying the overall device structure
2Reliability
If multiple frames and guiding bars are used, then lens adjustment is enabled, but weight increases
Solution Approach 1:
The patent combines multiple heavy components (two frames and four guiding bars) into a single integrated frame structure, directly reducing the total weight of the lens adjusting device while maintaining the necessary mechanical support and adjustment functionality
Solution Approach 2:
The patent removes the guiding bars entirely by integrating their structural and guiding functions into the frame itself, eliminating the weight contribution of these separate components while preserving the mechanical constraints needed for precise lens adjustment
3Reliability
If two separate frames and four guiding bars are used, then lens adjustment functionality is achieved, but space requirements increase
Solution Approach 1:
The patent merges the vertical and horizontal adjusting frames into a compact integrated structure where the vertical adjusting portion and horizontal adjusting portion occupy overlapping or adjacent spaces, reducing the overall footprint of the lens adjusting device while maintaining full adjustment capability in both directions
Solution Approach 2:
The patent eliminates the guiding bars that would occupy additional space, instead incorporating their guiding function into the frame's adjusting portions through integrated guiding features that require minimal additional space compared to separate guiding bar components
Data Source
AI summary
A lens adjusting device of a projector is provided. The lens adjusting device has a base, a frame, and at least one positioning structure. A lens is fixed on the frame. The positioning structure is utilized for movably setting the frame on the base. The positioning structure has a groove, a slider, and a positioning unit. The groove is disposed on the frame. The slider is disposed in the groove and has a guiding hole defined therein. The extending direction of the guiding hole is substantially perpendicular to the extending direction of the groove. The positioning unit is slidably disposed in the guiding hole and penetrates the guiding hole to set the frame and the slider on the base.