Imaging Device Optical Axis Shift for Line of Sight Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional imaging and displaying devices face issues with mismatched lines of sight and image distortion, particularly when displaying a user's full body on a large screen, as the camera position is restricted, leading to unbalanced and distorted images due to the physical placement of cameras relative to the display.
Innovation Solution
The device incorporates an imaging element with a horizontal imaging surface and an optical axis shift mechanism that allows the lens or imaging element to move parallel to the imaging surface, adjusting the optical axis to match the user's line of sight and maintaining image quality by using a body height information acquirer to control the shift amount and position of the imaging device or display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera is placed at a fixed position relative to the display, then the device structure is simple, but the user's line of sight does not match the image position causing distortion
Solution Approach 1:
The patent implements an optical axis shift device that enables dynamic adjustment of the camera's optical axis angle. The camera can change its shooting angle within a range (e.g., ±15 degrees or more) to match the user's line of sight, transforming the fixed camera system into a dynamic one that adapts to different user positions and heights, thereby eliminating image distortion without requiring multiple cameras
Solution Approach 2:
The patent changes the optical parameter (optical axis angle) of the camera system to resolve the contradiction. By adjusting the optical axis angle according to the user's line of sight, the system maintains high image quality and proper perspective while avoiding the need for complex multi-camera arrangements, thus improving reliability without proportionally increasing device complexity
2Adaptability or versatility
If multiple cameras are used to cover different angles, then the line of sight matching improves, but the device complexity and cost increase
Solution Approach 1:
Instead of using multiple static cameras, the patent employs a single camera with dynamic optical axis adjustment capability. The camera can rotate or tilt to match the user's line of sight, providing the adaptability of multiple cameras while maintaining the simplicity of a single-camera system, thus improving line of sight matching without increasing device complexity
Solution Approach 2:
The single camera is designed to perform multiple functions by adjusting its optical axis angle. It can capture images at different angles and positions, effectively replacing what would traditionally require multiple fixed cameras, thereby achieving versatility without increasing the number of components
3Area of stationary object
If the camera is positioned to capture the user's full body, then the coverage area increases, but the image becomes distorted and unbalanced
Solution Approach 1:
The optical axis shift device enables the camera to dynamically adjust its angle to capture the user's full body from the appropriate perspective. By changing the optical axis angle, the camera can maintain proper geometric relationships in the captured image, ensuring image balance and proportion while achieving full-body coverage, thus resolving the contradiction between coverage area and image precision
Data Source
AI summary
An imaging and displaying device according to the present disclosure includes an imaging device that takes an image of a subject including a user; a display; and an image processor that receives data of an image of the subject taken by the imaging device and causes the image to be displayed on the display. The imaging device includes an imaging element that is disposed so that a normal to an imaging surface is horizontal; an optical system that has a lens for forming the image of the subject on the imaging surface; and an optical axis shift device. The optical axis shift device supports at least one of the imaging element and the lens in such a manner that the at least one is movable in a direction parallel with the imaging surface and that shifts the movably supported imaging element or lens in the direction parallel with the imaging surface.