Display Apparatus Over Insulating Layer for Eye-Reflection Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices, particularly those used for VR and AR, lack the ability to detect user body movements, blinking actions, and fatigue levels, posing potential adverse effects on the user's eyes.
Innovation Solution
An electronic device is designed with a display apparatus containing a light-emitting device and a light-receiving device, utilizing a mirror to reflect infrared light from a user's eye or eyelid, allowing detection of blinking actions and fatigue through differences in light reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a goggle-type terminal is worn on the user's head to cover the eyes, then the display function is achieved, but the user's eyes may be adversely affected due to lack of detection capability
Solution Approach 1:
The display apparatus is designed to perform multiple functions: it serves as both a display device and a detection device. The light-receiving device can detect various conditions including blinking actions, eyeball movements, and body movements, allowing the same device to provide both visual output and health monitoring capabilities.
Solution Approach 2:
A light source and light-receiving device are introduced as intermediaries between the display and the user's eye. The light source emits light that reflects off the eye or eyelid, and the light-receiving device captures this reflected light to detect blinking and eyeball movements, enabling indirect monitoring of eye health.
2Ease of manufacture
If the display apparatus structure is simplified, then the manufacturing cost is reduced, but the detection precision of blinking and eyeball movement is affected
Solution Approach 1:
The light-emitting device and light-receiving device are integrated into the same display apparatus structure. The light-receiving device is positioned to receive light reflected from the eye area, combining display and detection functions in a unified structure that reduces manufacturing complexity while maintaining detection capability.
Solution Approach 2:
The display apparatus uses its own light-emitting device to provide the light source for detection, eliminating the need for a separate light source component. The light emitted by the display itself is reflected by the eye or eyelid and detected by the light-receiving device, simplifying the overall system structure.
3Adaptability or versatility
If the light-receiving device is positioned to detect reflected light, then the detection of blinking and eyeball movement is enabled, but the device complexity increases
Solution Approach 1:
Instead of using complex imaging systems to capture eye movements, the invention inverts the approach by detecting changes in reflected light intensity. The light-receiving device measures the amount of light reflected from the eye or eyelid, where changes in reflectance indicate blinking or eyeball movements, simplifying the optical system.
Solution Approach 2:
The invention replaces complex mechanical or optical imaging systems with a simpler photodetection system. Instead of using lenses, mirrors, and image sensors to capture and analyze eye movement images, the system uses a light source and light-receiving device to detect changes in light reflection, substituting a mechanical/optical system with a simpler optical detection system.
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 detection of user blinking actions and fatigue levels, allowing for input operations and fatigue management, enhancing user safety and device interaction.
Implementation Method 1
light reflected by the user's eye or eyelid is incident on the display apparatus
Implementation Method 2
A light-receiving device having a light-receiving sensitivity peak in a wavelength range of the emitted light is used as a display portion
Data Source
AI summary
An electronic device capable of detecting a user's body movements is to be provided. The electronic device is display equipment worn in front of the user's eye and capable of detecting the blinking action. The electronic device includes a display apparatus and a light source in a housing, and the display apparatus includes a light-emitting device and a light-receiving device in a display portion. Light emitted by the light source is incident on the user's eye and the vicinity thereof through a mirror and reflected, and the reflected light is detected by the light-receiving device. The amount of light reflected by the eyelid and that by the eyeball are different from each other, which enables the blinking action to be detected. The detection of the blinking action enables the user's fatigue state to be estimated.