Eyepiece Sensor Layout With Shared Light Source for Gaze Detection
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Solution Overview
Problem
Existing electronic devices with line of sight detection and eye proximity sensing functions suffer from increased complexity and power consumption due to separate components or shared sensors, leading to higher costs and inefficiencies.
Innovation Solution
An electronic device with separate eye proximity sensing and line of sight detection sensors, utilizing a single light source for both functions and low-power sensors for eye proximity sensing, reduces complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate light sources and sensors are provided for eye proximity sensing and line of sight detection, then measurement precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies multi-functionality by enabling a single light source to serve dual purposes: illuminating for both eye proximity sensing and line of sight detection. The control unit intelligently activates the shared light source for different functions based on operational needs, reducing component quantity while maintaining detection accuracy through selective activation rather than requiring separate dedicated light sources for each function
2Device complexity
If the same sensor is used for both eye proximity sensing and line of sight detection, then device complexity is reduced, but power consumption increases
Solution Approach 1:
The patent applies segmentation by dividing the sensor system into two specialized sensors: an eye proximity sensing sensor dedicated to detecting eye contact with the eyepiece, and a line of sight detection sensor dedicated to tracking gaze direction. This segmentation allows each sensor to operate independently with optimized power consumption characteristics, avoiding the need for a single high-power sensor to handle both functions simultaneously
3Use of energy by moving object
If separate sensors are provided for eye proximity sensing and line of sight detection, then power consumption is reduced, but manufacturing cost increases
Solution Approach 1:
The patent reduces manufacturing cost by implementing a shared light source that serves both eye proximity sensing and line of sight detection functions. The control unit manages the light source to activate it for proximity sensing when the eye approaches the eyepiece, and for line of sight detection when the eye is at the eyepiece, thereby eliminating the need for separate light sources and reducing overall component count and manufacturing complexity
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 solution enables efficient line of sight detection and eye proximity sensing with reduced power consumption and lower costs by using a shared light source and low-power sensors, maintaining device compactness and functionality.
Implementation Method 1
an eye proximity sensing sensor configured to receive light for the eye proximity sensing
Implementation Method 2
a line of sight detection sensor configured to receive light for the line of sight detection
Data Source
AI summary
An electronic device according to the present invention is an electronic device which is capable of performing eye proximity sensing to sense contact of an eye with an eyepiece and line of sight detection to detect a line of sight, including: an eye proximity sensing sensor configured to receive light for the eye proximity sensing; a line of sight detection sensor configured to receive light for the line of sight detection, the line of sight detection sensor being separate from the eye proximity sensing sensor; and one or more light sources including a light source used for both the eye proximity sensing and the line of sight detection.