Electronic Viewfinder Display Area Adjustment for Glasses Users
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Solution Overview
Problem
Existing electronic devices with electronic viewfinders face challenges in adjusting the display area to accommodate varying distances between the viewfinder and the user's eye, particularly when users wear glasses, leading to cumbersome operation and reduced visibility.
Innovation Solution
An electronic device equipped with a control unit that adjusts the display area based on the distance from the ocular optical system to the user's eye, utilizing a line-of-sight detection mechanism and distance calculation to optimize the display size for improved visibility and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display area is increased to provide higher magnification and larger field of view, then image visibility and user immersion are improved, but when the user looks into the viewfinder at a greater distance (e.g., while wearing glasses), a portion of the display area becomes shielded, resulting in poorer visibility and making framing more difficult
Solution Approach 1:
The patent implements dynamic adjustment of the display area based on the detected distance between the user's eye and the ocular optical system. When the distance exceeds a threshold (indicating the user is wearing glasses), the display area is automatically reduced to prevent shielding and maintain proper framing visibility. This dynamic adaptation resolves the contradiction by making the display area flexible rather than fixed, allowing it to optimize for both immersion and usability under different viewing conditions.
2Ease of operation
If the display area is arbitrarily set by the user to accommodate different viewing distances, then visibility is improved, but the operation becomes cumbersome requiring access to hierarchical menus
Solution Approach 1:
The system performs self-service by automatically detecting the user's viewing distance through the ocular optical system and autonomously adjusting the display area without requiring manual user input. The control unit monitors the distance in real-time and modifies the display parameters automatically, eliminating the need for users to navigate menus or perform manual adjustments. This resolves the contradiction by making the system adaptive and autonomous, improving both visibility and operational efficiency.
3Device complexity
If a fixed display area is used in the electronic viewfinder, then the device structure is simple, but it cannot accommodate varying user distances (e.g., when wearing glasses), leading to shielded display portions and reduced visibility
Solution Approach 1:
The patent changes the display parameter (display area size) based on the detected distance parameter between the user's eye and the ocular optical system. The control unit adjusts the display area dynamically by modifying relevant display parameters when the distance exceeds a predetermined threshold, allowing the fixed physical display structure to present variable effective display areas. This resolves the contradiction by enabling parameter-based adaptability without changing the physical device structure.
Data Source
AI summary
An electronic device comprises a display configured to display an image, an ocular optical system for viewing the display, and a control unit configured to control the display unit so as to change a display area of the display based on a distance from the ocular optical system to an eye of a user looking into the ocular optical system.