Projection Lens Fine Adjustment for Panel Pitch Variations
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Solution Overview
Problem
Existing projection display apparatuses struggle with fine adjustment of magnification due to differences in panel pitch sizes between the projection display apparatus and interchangeable lenses, leading to inadequate image alignment and quality.
Innovation Solution
A projection display apparatus with a detachable lens apparatus that stores reference panel pitch size information and adjusts driving conditions based on the size of one pixel in the image generator, allowing for proper fine adjustment even when panel pitch sizes differ between the apparatus and the lens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a projection lens is detachably attachable to multiple types of projection display apparatuses with different pitch sizes, then the lens apparatus has high adaptability, but the fine adjustment amount cannot be changed to match different panel pitch sizes
Solution Approach 1:
The patent applies dynamics by making the fine adjustment amount variable rather than fixed. The control unit dynamically changes the fine adjustment amount based on the detected panel pitch size of the connected projection display apparatus. This allows the lens apparatus to adapt its adjustment characteristics to match different panel types, resolving the contradiction between maintaining universal compatibility and providing precise adjustment for each specific panel size.
Solution Approach 2:
The patent changes the parameter of fine adjustment amount based on the panel pitch size. The control unit detects the panel pitch size and accordingly adjusts the fine adjustment amount parameter to an appropriate value. This parameter adaptation enables the lens apparatus to maintain measurement precision across different panel types while preserving adaptability to multiple apparatuses.
2Device complexity
If the fine adjustment amount is fixed in the lens apparatus, then the device complexity is reduced, but the image alignment precision deteriorates when panel pitch sizes differ
Solution Approach 1:
The patent applies self-service by enabling the lens apparatus to automatically detect the panel pitch size and autonomously determine the appropriate fine adjustment amount without requiring manual configuration or complex external control systems. The control unit performs automatic detection and adjustment, reducing device complexity while maintaining high image alignment precision across different panel types.
Data Source
AI summary
A projection display apparatus to which a lens apparatus includes a storage configured to store information about a reference panel pitch size is detachably attachable and an image generator configured to generate an image, and a controller configured to set a driving condition for the lens apparatus in accordance with a size of one pixel in the image generator and the reference panel pitch size.