Lens Assembly Positioning Using Laser Distance Reliability
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Solution Overview
Problem
Existing electronic devices struggle to accurately adjust the position of lens assemblies based on reliable distance measurements, particularly in varying lighting conditions, leading to suboptimal camera performance.
Innovation Solution
An electronic device employs a laser sensor to measure the intensity of reflected light and ambient light, calculates reliability, and adjusts the lens assembly position based on these measurements to enhance camera performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laser sensor is used to measure distance based on reflected light intensity, then distance measurement capability is improved, but measurement reliability deteriorates in varying lighting conditions
Solution Approach 1:
The system measures ambient light intensity using the laser sensor in a non-emitting state, then uses this feedback information to calculate reliability metrics and determine whether to trust the distance measurement obtained when the laser is emitting. This feedback loop allows the system to adapt to varying lighting conditions and make informed decisions about measurement validity.
Solution Approach 2:
The system performs preliminary measurement of ambient light intensity before taking the actual distance measurement. By measuring the ambient light in advance (when the laser is not emitting), the system prepares reliability assessment data that will be used to evaluate the quality of the subsequent distance measurement, ensuring accurate results even in changing lighting environments.
2Manufacturing precision
If lens assembly position is adjusted based on unreliable distance measurements, then camera performance deteriorates, but adjusting based on reliable measurements requires complex reliability assessment
Solution Approach 1:
The laser sensor serves dual purposes: it both measures the distance (by detecting reflected light) and assesses the reliability of that measurement (by measuring ambient light intensity when not emitting). This self-service approach eliminates the need for separate sensors or complex external systems to verify measurement quality, reducing overall system complexity while maintaining high positioning accuracy.
Solution Approach 2:
The laser sensor is designed to perform multiple functions: distance measurement through reflected light detection and ambient light intensity measurement for reliability assessment. This multi-functionality allows a single component to provide both the primary measurement and the quality verification, simplifying the system architecture while ensuring accurate lens positioning.
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 provides improved camera performance by accurately adjusting lens positions, enhancing image clarity and reliability in diverse lighting conditions.
Implementation Method 1
identifying, using a laser sensor of the electronic device in a first state outputting laser light, a first distance related to intensity of reflected light for the laser light
Implementation Method 2
identifying, using the laser sensor in a second state different from the first state, a threshold distance related to intensity of ambient light directed to the laser sensor
Data Source
AI summary
An electronic device is provided. The electronic device includes a camera module including a lens assembly, a laser sensor, memory storing instructions, and one or more processors communicatively coupled to the camera module, the laser sensor, and the memory. The instructions, when executed by the one or more processors individually or collectively, cause the electronic device to identify, using the laser sensor in a first state outputting laser light, a first distance related to intensity of reflected light for the laser light, identify, using the laser sensor in a second state different from the first state, a threshold distance related to intensity of ambient light directed to the laser sensor, identify, using an image obtained from the camera module, a second distance related to the image, obtain a reliability of the first distance, based on the first distance and the threshold distance, and based on the reliability being less than or equal to a threshold reliability, adjust a position of the lens assembly based on the second distance by controlling the lens assembly.