Head Mounted Display Adaptive Image Control
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Solution Overview
Problem
Existing head-mounted display devices do not effectively reduce visual burden on users when displaying both virtual images and outside scenes, particularly for still images and dynamic scenes with rapid changes, and lack convenience features such as temperature and target detection.
Innovation Solution
A head-mounted display device with an image display unit and control unit that generates image light based on image data, adjusting luminance and display time to gradually transition between different image types, incorporating pupil size detection, temperature distribution, and target movement to optimize visual comfort and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the head mounted display device displays a transmitted outside scene superimposed on a received video, then the user can visually recognize the outside scene in addition to the video, but the visual burden on the user increases due to rapid changes in image types
Solution Approach 1:
The patent applies dynamics by making the image display characteristics adjustable and adaptive. The control unit dynamically changes the display mode between transmission and non-transmission types based on detected information from the outside scene, such as luminance levels or detected objects. This dynamic adaptation allows the system to optimize visual comfort for different viewing conditions while maintaining the ability to display both outside scenes and video content.
Solution Approach 2:
The patent changes display parameters (transmission/non-transmission mode, luminance levels) based on detected outside scene information. When the outside scene has high luminance or contains specific detected information, the control unit adjusts the display parameters to reduce visual burden, such as switching to non-transmission mode or adjusting the superimposition characteristics. This parameter adaptation resolves the contradiction by making the display behavior context-dependent.
2Speed
If the head mounted display device suddenly changes the virtual image to be visually recognized, then the display can respond quickly to different content types, but the visual burden on the user increases
Solution Approach 1:
The patent implements dynamic transition control where the virtual image gradually changes rather than switching abruptly. The control unit manages the transition between different image types (video, still image, outside scene) by gradually adjusting display parameters over time. This dynamic approach maintains quick responsiveness to content changes while reducing visual burden through smooth transitions that allow the user's visual system to adapt.
3Ease of operation
If the head mounted display device displays a still image, then the user can visually recognize static content, but the visual burden increases due to lack of frame type changes
Solution Approach 1:
The patent applies periodic action by automatically switching between transmission and non-transmission display modes at predetermined time intervals when displaying still images. This periodic switching creates subtle temporal variations in the display output, preventing the monotony of completely static images while maintaining ease of visual recognition. The rhythmic alternation provides visual stimulation without the complexity of rapid content changes.
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
The device reduces visual burden by gradually changing image types and luminance, enhancing user comfort and convenience through adaptive image display based on environmental and user conditions.
Implementation Method 1
an image-light generating unit configured to generate image light on the basis of image data and emit the image light
Implementation Method 2
transmitting an outside scene in a state in which the image display unit is worn on the head of the user
Data Source
AI summary
A transmission type head mounted display device includes an image display unit including an image-light generating unit configured to generate image light on the basis of image data and emit the image light, the image display unit causing a user to visually recognize the image light as a virtual image and transmitting an outside scene in a state in which the image display unit is worn on the head of the user, and a control unit configured to set, as the image light that the control unit causes the user to visually recognize using the image display unit, specific image light generated on the basis of set specific image data and changing according to elapse of time.