Projector Lens Adjustment Mechanism for Aspect Ratio Switching
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Solution Overview
Problem
Existing projectors require users to memorize and manually adjust lens parameters for different aspect ratios, making it difficult to switch between screen types efficiently.
Innovation Solution
A projector with a light source, light modulation device, projection lens, lens adjustment mechanism, adjustment value storage unit, signal aspect ratio recognition, and adjustment control unit that automatically acquires and applies lens adjustment values based on the input image signal's aspect ratio, simplifying user operations for focus, zoom, and lens shift adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If lens adjustment values are stored in memory for different aspect ratios, then the projector can automatically adjust the optical system when switching between screen types, but the device complexity increases due to the need for storage and recognition mechanisms
Solution Approach 1:
The projector automatically performs lens adjustment by recognizing the input signal's aspect ratio and selecting corresponding pre-stored adjustment values, eliminating the need for manual user input and reducing operational complexity despite adding automated recognition and storage mechanisms
Solution Approach 2:
Multiple sets of lens adjustment values for different aspect ratios are pre-stored in memory before use. When a signal is input, the system immediately retrieves the appropriate pre-configured values, avoiding the need for real-time calculation or manual adjustment during operation
2Loss of time
If the projector automatically recognizes and applies lens adjustment values based on aspect ratio, then the time required for switching between screen types is reduced, but the device complexity increases due to additional recognition and control units
Solution Approach 1:
Lens adjustment values for various aspect ratios are pre-stored in memory. When an image signal is input, the system immediately recognizes the aspect ratio and retrieves the corresponding pre-configured adjustment values, enabling rapid switching without real-time calculation or manual intervention
Solution Approach 2:
The manual mechanical adjustment process is replaced with an automated electronic recognition and control system that detects the aspect ratio through signal analysis and automatically actuates the lens adjustment mechanism via electronic control signals
Data Source
AI summary
A projector includes a lens adjustment mechanism that performs a predetermined adjustment operation for a projection lens, an adjustment value storage unit that stores lens adjustment values for performing the predetermined adjustment operation by linking the lens adjustment values to the type of aspect ratio of an image signal, a signal aspect ratio recognition unit that recognizes the aspect ratio of the image signal input to an input terminal as a signal aspect ratio, an adjustment value acquisition unit that acquires, from the adjustment value storage unit, the lens adjustment values corresponding to the type of signal aspect ratio recognized by the signal aspect ratio recognition unit, and an adjustment control unit that causes the lens adjustment mechanism to perform a lens adjustment operation based on the lens adjustment values acquired by the adjustment value acquisition unit.