Camera Display Device Multi-Directional Viewing via Light Guide Plate
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Solution Overview
Problem
Existing camera technologies that use diffractive optical elements to form multiple images on a single display monitor face issues where the second image can only be observed from a specific position and becomes unobservable when the viewer's eye position shifts.
Innovation Solution
A camera system with a display device capable of showing multiple images from various directions, utilizing a selection device and display control system to manage image display modes, including the option to show identical or different images from specific angles, and adjusting magnification based on the viewer's position relative to the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a diffractive optical element is used to form multiple images on a single display monitor, then multiple images can be displayed, but the second image can only be observed from a specific position and becomes unobservable when the viewer's eye position shifts
Solution Approach 1:
The patent transitions from a single-direction display system to a multi-directional display system by incorporating a light guide plate with specific refractive index layers. This allows light to be guided and emitted in multiple directions, enabling observers to view different images from different positions around the display device, thus adding the dimension of viewing angle to the display system.
Solution Approach 2:
The patent changes the optical parameters of the display system by introducing a light guide plate with specific refractive index values (n1 for the light guide plate, n2 for the adhesive layer). By carefully controlling these refractive index parameters and the thickness of the adhesive layer, the system achieves optimal light guidance and emission in multiple directions, resolving the position-dependent observability issue.
2Adaptability or versatility
If multiple images are displayed on a single screen from different directions, then images can be observed from various positions, but the device complexity increases
Solution Approach 1:
The patent merges the light guide function and the display function into a single integrated structure. The light guide plate is positioned directly behind the display monitor, and through optical coupling with adhesive layers, it guides light from the monitor to emit in multiple directions. This merging approach achieves multi-directional viewing capability without requiring separate display devices for different angles, thus limiting the increase in device complexity.
Solution Approach 2:
The patent introduces a light guide plate as an intermediary component between the display monitor and the environment. This light guide plate acts as a mediator that receives light from the monitor and redistributes it in multiple directions through its optical properties and structural design, enabling multi-directional viewing without direct exposure of multiple display surfaces.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables multiple images to be observed clearly from different angles, improving user experience by maintaining image clarity and ease of use across various viewing positions, and allowing for efficient operation during photographing and image reproduction modes.
Implementation Method 1
a light guide plate having a specific refractive index and a specific thickness
Data Source
AI summary
A camera includes a display device capable of displaying on a single screen a plurality of images, each of which can be observed from one of a plurality of directions; a selection device that selects any one of a plurality of operating modes; and a display control device that displays at the display device the plurality of images each correlated to the operating mode selected via the selection device.