Image Sensor Positioning with Temperature Compensation
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Solution Overview
Problem
Existing electronic devices and image capturing apparatuses face challenges in adjusting the position of the image sensor while maintaining stability against temperature-induced positional displacement.
Innovation Solution
The proposed solution involves an electronic device and image capturing apparatus with a base member, a reference member, an image sensor, a holding member, a biasing member, and a correction member. The correction member, such as a bimetal washer or shape memory alloy spring, provides a force that counteracts the biasing force, allowing for adjustable distance settings and minimizing temperature-induced displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bimetal washer is used to prevent positional displacement of the image sensor, then temperature stability is improved, but position adjustment difficulty increases
Solution Approach 1:
The device is divided into separate functional components: a holding member for positioning the image sensor, a biasing member for applying constant force, and a correction member for temperature compensation. This segmentation allows independent optimization of each component's function, enabling both stable positioning and easy adjustment.
Solution Approach 2:
The holding member is designed to be movable rather than fixed, allowing dynamic adjustment of the image sensor position during manufacturing and assembly. The biasing member provides continuous adjustable force to maintain contact between the holding member and the image sensor, enabling flexible positioning while maintaining stability.
2Manufacturing precision
If the image sensor position is adjusted during manufacturing, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The biasing member automatically maintains constant contact force between the holding member and the image sensor without requiring external control or complex adjustment mechanisms. This self-service feature simplifies the overall device structure while enabling precise positioning through simple manual adjustment of the holding member.
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 configuration enables precise adjustment of the image sensor position and effectively suppresses positional displacement due to temperature changes, enhancing the reliability and accuracy of image capturing.
Implementation Method 1
The second force changes due to deformation of the correction member depending on its temperature
Implementation Method 2
a biasing member generating a first force that biases the holding member
Data Source
AI summary
An electronic device includes a base member, a reference member fixed to the base member, an image sensor, a holding member holding the image sensor and being held by the base member such that a distance from the reference member to the image sensor is changeable, a biasing member generating a first force that biases the holding member in a direction in which the distance increases, and a correction member providing, to the holding member, a second force acting against the first force. The second force changes due to deformation of the correction member depending on its temperature.