Image Capturing Module Assembly Flatness and Focusing Time
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Solution Overview
Problem
Portable device imaging modules face challenges in assembly flatness and focusing time due to the tilt angle between the image sensor and lens housing, which affects image quality and is time-consuming to manually focus.
Innovation Solution
An image capturing module with an image sensing unit, housing frame, actuator structure, and reflecting material, where the reflecting material's surface is aligned horizontally with the image sensing chip's surface using a laser light source, allowing for precise adjustment and fixation of the lens assembly to reduce tilt angles and shorten focusing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the image sensor and sensor housing are disposed on the same datum plane, then the assembly structure is simplified, but the assembly tilt angle increases and image quality decreases
Solution Approach 1:
The patent applies preliminary action by pre-aligning the sensor housing and image sensor to a common datum plane before final assembly. The housing frame is designed with built-in alignment features that establish the correct horizontal relationship between components during the assembly process, eliminating the need for post-assembly tilt corrections and ensuring optimal image quality.
2Device complexity
If manual focusing is used, then the device structure is simple, but the focusing time is very long
Solution Approach 1:
The patent replaces manual mechanical focusing with an automated focusing mechanism. The system uses a motor-driven lens assembly that can automatically adjust the focal length based on detected object distance, substituting the slow manual operation with rapid automated mechanical adjustment, thereby significantly reducing focusing time while maintaining structural simplicity.
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 enhances assembly flatness and significantly reduces focusing time by ensuring horizontal alignment and allowing for precise focal length adjustments, thereby improving image quality and efficiency in portable device imaging modules.
Implementation Method 1
the first horizontal top surface is obtained by a horizontal correction system using a laser light source
Data Source
AI summary
An image capturing module includes an image sensing unit, a housing frame, an actuator structure and a reflecting material. The image sensing unit includes an image sensing chip having a first horizontal top surface. The reflecting material is temporarily placed on the movable lens assembly of the actuator structure. The reflecting material has a second horizontal top surface. The distance from the laser light source to the first horizontal top surface is defined as a first horizontal distance, the distance from the laser light source to the second horizontal top surface is defined as a second horizontal distance, and a predetermined fixed focusing distance from the second horizontal top surface to the first horizontal top surface is obtained by subtracting the second horizontal distance from the first horizontal distance, for shortening the focusing time of the movable lens assembly relative to the image sensing chip.