Reflector Redirects Light to Camera in Closed Laptop
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Solution Overview
Problem
Clam-shell style computing devices with closed lids cannot utilize onboard cameras for applications like facial recognition and user presence detection when docked, requiring external cameras with additional equipment and security vulnerabilities.
Innovation Solution
Incorporating a reflector within the computing device's base to redirect external light to the camera lens when the lid is closed, allowing camera-based applications to function while the device is closed, enhancing security and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the camera is positioned on the upper lid facing the base, then the camera can be used for imaging applications when the laptop is open, but the camera cannot be used when the laptop is closed
Solution Approach 1:
A reflector is introduced as an intermediary component between the external environment and the camera. The reflector redirects light from the front of the device to the camera lens, enabling the camera to capture images of the user's face even when the lid is closed and the camera is facing the base.
Solution Approach 2:
The solution changes the optical path by introducing a reflective surface at a specific angle (e.g., 45 degrees) to redirect light from one spatial dimension (front of device) to another (camera lens). This allows the camera to receive light from a direction different from its facing direction.
2Adaptability or versatility
If external cameras are used when the laptop is closed, then camera applications can function, but additional equipment and security vulnerabilities are introduced
Solution Approach 1:
The device uses its existing camera and reflector component to provide camera functionality in closed state, eliminating the need for external cameras or additional equipment. The system serves itself by utilizing integrated components rather than requiring external additions.
Solution Approach 2:
The existing camera is made multi-functional by enabling it to serve both open-state and closed-state applications through the reflector mechanism, eliminating the need for separate external camera equipment.
3Device complexity
If the camera faces the base when closed, then the camera structure is simple, but the camera cannot capture user presence for security applications
Solution Approach 1:
The reflector acts as a mediator that enables the simple camera structure to achieve reliable security functionality by redirecting light paths without requiring mechanical movement or complex repositioning of the camera itself.
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 continuous operation of camera-based applications, improves user experience, and enhances security by eliminating the need for external cameras, while maintaining privacy and reducing power consumption.
Implementation Method 1
a reflector of the computing device being disposed to reflect light from an exterior of the computing device and to the lens
Data Source
AI summary
A computing device with a closable lid and camera on the lid has a reflector arranged to use the camera while the lid of the computing device is closed.