Lens Placement Using Sensor Imaging for Fixed-Focus Cameras
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Solution Overview
Problem
Existing fixed-focus cameras face challenges in accurately placing lenses to achieve optimal focal length, as existing methods do not effectively account for the unique optical characteristics of image sensor modules, leading to suboptimal image quality.
Innovation Solution
A lens-placement system that captures images of the image sensor module to evaluate and adjust the lens position in the lens mount, using an imaging system to ensure the image sensor is at the focal point, allowing for mechanical anchoring once optimal placement is achieved, regardless of camera specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed-focus camera uses a lens placed at a fixed distance from the image sensor module, then the manufacturing process is simplified, but the image quality and focal range are suboptimal
Solution Approach 1:
The patent applies preliminary action by capturing an image of the image sensor module before final lens assembly, allowing the lens to be positioned and anchored at the optimal focal point determined by analyzing the captured image. This preliminary imaging step enables precise lens placement without requiring complex fixed-distance mounting mechanisms.
2Device complexity
If the lens is placed at a fixed distance from the image sensor module, then the device complexity is reduced, but the focus quality and edge characteristics are compromised
Solution Approach 1:
The patent replaces complex mechanical focusing mechanisms with an optical imaging approach. Instead of using mechanical systems to achieve precise focal length adjustment, the system captures an image of the image sensor module and uses optical analysis to determine the optimal lens position, thereby achieving precise focus without mechanical complexity.
3Ease of manufacture
If existing lens placement methods are used, then the manufacturing process is straightforward, but the image quality including brightness and contrast is suboptimal
Solution Approach 1:
The patent implements feedback by capturing an image of the image sensor module and using the captured image information to determine the optimal lens position. This feedback loop allows the lens to be positioned at the focal point that produces the best image quality, including optimal brightness and contrast, rather than relying on fixed-distance placement.
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
Ensures high-quality image capture by accurately positioning the lens, improving focus, edge characteristics, color, brightness, and contrast, adaptable to various image sensor types and sizes.
Implementation Method 1
an imaging camera to capture an image of at least a portion of an image sensor module
Data Source
AI summary
A lens-placement system in accordance with the invention includes an imaging system having an imaging camera to capture an image of at least a portion of an image sensor module that is located in a fixed-focus camera. The captured image is used for placement of a lens in the fixed-focus camera.