Head-Mounted Device In-Display Camera Integration
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Solution Overview
Problem
Conventional head-mounted devices are too large and heavy, limiting their usability in applications like virtual reality, augmented reality, and mixed reality due to the need for bulky camera modules and optical systems for dynamic user tracking and positioning.
Innovation Solution
A head-mounted device design featuring multiple front camera modules, an in-display camera module, and an image-processing unit, with the in-display camera module integrated within the display device to reduce size and enhance eye tracking functionality, along with a lens actuator for adjusting viewing lens elements for optimal focus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional imaging camera modules and optical systems are used for dynamic user tracking and positioning, then the head-mounted device can provide clear images and immersive visual experience, but the device becomes too large and too heavy
Solution Approach 1:
The patent combines multiple camera modules (front camera, eye tracking camera, depth sensing camera) and optical systems into an integrated arrangement mounted on a common frame structure. This merging of previously separate components into a unified system reduces overall device size and weight while maintaining all necessary functions for imaging, eye tracking, and depth sensing
Solution Approach 2:
The patent employs a nested arrangement where camera modules and optical elements are positioned within each other's spatial envelopes. The front camera module, eye tracking camera module, and depth sensing camera module are arranged in a compact nested configuration on the frame, allowing each component to occupy optimized space without requiring separate mounting volumes, thereby reducing total device size
2Adaptability or versatility
If multiple camera modules and optical systems are used for dynamic user tracking, positioning, and eye tracking, then the functional requirements for computer vision are met, but the device complexity increases
Solution Approach 1:
The patent designs camera modules and optical systems that serve multiple functions simultaneously. The front camera module contributes to both dynamic user tracking and positioning, the eye tracking camera module enables gaze direction positioning, and the depth sensing camera module provides both depth information and positioning data. This multi-functionality reduces the need for separate dedicated components for each function
Solution Approach 2:
The patent divides the imaging and tracking system into distinct modular camera units (front camera module, eye tracking camera module, depth sensing camera module), each with specialized optics and sensors. This segmentation allows independent optimization of each module's design and simplifies the overall system architecture by creating manageable, functionally-separated units that can be independently configured and calibrated
Data Source
AI summary
A head-mounted device includes a plurality of front camera modules, a display device, an in-display camera module and an image-processing unit. The front camera modules include a first camera module and a second camera module that are respectively disposed at the left and right sides of the head-mounted device. The in-display camera module is disposed within the boundary of the display device. The image-processing unit is in communication connection with the front camera modules and the display device. The display device and the in-display camera module face a user side of the head-mounted device.