Head Mounted Display Imaging Range Adaptation
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Solution Overview
Problem
Existing head-mounted display devices lack optimal settings for the imaging unit, which affects the user's field of view and image processing, leading to inefficient image capture and display, particularly in considering the user's field of view, angle of view, and direction of the imaging unit.
Innovation Solution
The head-mounted display device sets the imaging range based on the focal length and estimated field of view of the user, allowing for clear visual recognition of the outside scene by only capturing necessary ranges, with adjustable camera angles and positions to enhance usability and reduce image processing burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the imaging unit captures a wide range of the outside scene, then the user can see more of the environment, but unnecessary image data is captured increasing processing burden
Solution Approach 1:
The patent applies local quality by differentiating between regions of interest and non-interest areas within the field of view. The imaging unit captures images selectively based on whether subjects are located within the user's field of view, rather than uniformly processing all captured data. This allows the system to focus computational resources on relevant portions of the scene while ignoring unnecessary areas.
Solution Approach 2:
The patent implements partial action by capturing only the portion of the outside scene that falls within the user's field of view. Instead of capturing and processing the entire scene or using excessive imaging coverage, the system precisely limits image capture to the necessary angular range defined by the user's visual field, thereby reducing unnecessary data processing while maintaining complete coverage of relevant areas.
2Manufacturing precision
If the imaging unit is positioned to capture the user's field of view, then clear visual recognition is achieved, but the device structure becomes more complex
Solution Approach 1:
The patent applies universality by integrating the imaging unit's functions to serve multiple purposes: capturing outside scenes for augmented reality display, identifying subjects within the user's field of view, and providing spatial awareness information. The imaging unit is positioned and configured to simultaneously achieve clear visual recognition and accurate field of view detection without requiring separate dedicated components for each function.
Solution Approach 2:
The patent merges the imaging unit's optical path with the display system's optical path, combining the functions of scene capture and field of view measurement into a unified optical system. This integration allows the same imaging components to serve both imaging and measurement functions, reducing overall device complexity while maintaining manufacturing precision for visual recognition.
3Area of stationary object
If the angle of view of the imaging unit is increased, then more of the outside scene is captured, but the image processing load increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the effective imaging range based on the user's field of view parameters. Rather than maintaining a fixed wide angle that always captures the maximum scene area, the system adapts the processing scope to match the user's actual visual field parameters, thereby optimizing the balance between imaging coverage and processing energy consumption.
Solution Approach 2:
The patent implements partial action by processing only those portions of captured images that correspond to the user's field of view. Even though the imaging unit may capture a wide angle to ensure complete coverage, the system selectively processes only the relevant subset of image data that falls within the defined field of view boundaries, reducing overall processing energy while maintaining complete situational awareness.
Data Source
AI summary
A transmission type head mounted display device includes an imaging unit that images an outside scene and an image display unit that is capable of transmitting the outside scene. An imaging range of the imaging unit is set based on a set distance from the image display unit set based on a focal length of a user and an estimated field of view estimated as a field of view of the user who wears the image display unit.