Notebook Camera Module Using Screen Reflection for Clear User Imaging
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Solution Overview
Problem
Existing notebook computer camera module designs often result in poor shooting angles due to the camera's position, leading to undesirable captures such as users appearing to look down, capturing nostrils and chin, or capturing fingers while typing.
Innovation Solution
A notebook computer design where the camera module is pivotally connected to the screen, with a photosensitive element and a first polarizer between the screen and the camera, utilizing a light-reflecting element to reflect image light and a second polarizer to filter image light, ensuring optimal image capture angles and clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera module is disposed on the top of the screen, then the camera can capture the user's face, but the user appears to be looking down in the shot image
Solution Approach 1:
The patent introduces a light-reflecting element as an intermediary between the camera module and the user. Instead of the camera directly facing the user, light from the user reflects off the screen's polarized surface to reach the camera, enabling accurate capture without the camera needing to be positioned directly in front of the user's face
2Measurement precision
If the camera module is disposed on the bottom of the screen, then the camera can capture the user's face, but the user's nostrils and chin are captured
Solution Approach 1:
The light-reflecting element mediates the optical path between the user and the bottom-positioned camera module. By reflecting light at specific angles through the polarized screen, the system enables the bottom-mounted camera to capture the user's face correctly without capturing unwanted areas like nostrils and chin
3Device complexity
If the camera module is disposed at the position of being on the keyboard, then the camera can be integrated into the device, but the user's fingers are shot by the camera module when the user is typing
Solution Approach 1:
The polarized light-reflecting screen acts as an intermediary that redirects light from the user's face to the keyboard-mounted camera while blocking direct line-of-sight paths. This allows the camera to be integrated into the keyboard area without capturing fingers during typing, as the optical path is controlled through polarization and reflection geometry
4Device complexity
If the camera module directly faces the user, then the structure is simple, but the shooting angle is poor and image quality is degraded
Solution Approach 1:
The patent uses the screen itself as a light-reflecting intermediary with polarizing properties. This simple structure enables indirect imaging where light from the user reflects off the polarized screen to reach the camera, improving image quality by controlling the optical path without adding complex mechanical components
Solution Approach 2:
The patent exploits the polarization parameter of light and the screen's polarized surface to control the optical path. By utilizing the polarization angle and reflection geometry, the system achieves improved image capture quality while maintaining a simple camera structure positioned away from the direct line of sight
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
This design avoids poor shooting angles by reflecting user image light to the photosensitive element through the screen, providing a clear image while filtering out interfering light, thus enhancing image quality and reducing reflections.
Implementation Method 1
The first polarizer and the second polarizer have different polarization directions
Implementation Method 2
the image light from the user is reflected to the photosensitive element through a light-reflecting element such as a screen
Data Source
AI summary
A notebook computer including a screen, a body, and a camera module is provided. The body is pivotally connected to the screen so that the screen is opened and closed relative to the body. The camera module is stored in one of the screen and the body and includes a photosensitive element and a first polarizer. The first polarizer is disposed between the screen and the photosensitive element. The screen includes a display panel and a second polarizer. The second polarizer is disposed between the display panel and the first polarizer. The first polarizer and the second polarizer have different polarization directions.