LCD Projector Optical Kernel Assembly with Dustproof Triangle Frame
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Solution Overview
Problem
Conventional LCD projector assembly methods face issues with image misalignment due to temperature-induced shrinkage of ultra violet seal and other components, requiring lengthy adjustments and introducing dust or particles during assembly, and are costly due to the use of snap fasteners.
Innovation Solution
The introduction of a dustproof triangle frame/panel module assembly with positioning holes on the triangle frame rather than the LCD panel, allowing for a simplified pin-to-hole method that omits snap fasteners and seals the panel peripheral, reducing dust entry and alignment issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If snap fasteners and peripheral sealing steps are used in conventional assembly methods, then the assembly structure is secure and dustproof, but the assembly process becomes lengthy and complex
Solution Approach 1:
The patent removes snap fasteners and peripheral sealing steps from the assembly process. The triangle frame is designed with integrated positioning holes that directly receive positioning pins, eliminating the need for separate fastening components and sealing operations, thereby reducing assembly time while maintaining structural integrity
Solution Approach 2:
The positioning holes are integrated directly into the triangle frame structure rather than being separate components. This merging of the positioning function into the frame itself eliminates multiple assembly steps and reduces the overall assembly process complexity
2Reliability
If conventional assembly methods with multiple components are used, then the assembly is secure, but the process introduces dust or particles and requires lengthy adjustments
Solution Approach 1:
The patent divides the assembly into distinct modular components: the triangle frame with integrated positioning holes, the LCD panel with corner holes, and the positioning pins. This segmentation allows for cleaner, more controlled assembly where each component can be positioned precisely without introducing dust, as the positioning holes are pre-formed in the frame rather than requiring assembly of multiple separate elements
3Ease of operation
If positioning holes are disposed on the LCD panel corners, then the panel can be positioned, but the panel itself becomes part of the adjustment mechanism increasing complexity
Solution Approach 1:
Instead of placing positioning holes in the LCD panel corners as in conventional designs, the patent inverts the approach by placing the positioning holes in the triangle frame. This inversion transfers the positioning function from the panel to the frame, simplifying the panel design and reducing the complexity of the adjustment mechanism while maintaining effective positioning
Data Source
AI summary
The present invention discloses an improved optical kernel assembly for liquid crystal display (LCD) projectors, which includes a base frame; a top frame being arranged substantially in parallel with the base frame; a polarizing beam splitter (PBS) mounted between the base frame and the top frame; and a dustproof triangle frame/panel module assembly.