Interchangeable Optical Lens Module with Linear Focus Adjustment
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Solution Overview
Problem
Existing digital diagnostic systems with integrated lenses are costly and complex, requiring intricate optical designs and focus adjustment mechanisms, making them difficult to manufacture and maintain for use with various affected parts like ophthalmic fundus, ear canal, or skin.
Innovation Solution
A digital diagnostic system with a host lacking curved surface optical lenses, featuring a focus adjustment module that compensates for focal length differences between interchangeable optical lens modules, simplifying the optical design and reducing manufacturing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical lenses with curved surfaces are arranged at both host end and lens end, then image quality can be improved, but optical design becomes more complicated and manufacturing difficulty increases
Solution Approach 1:
The patent extracts the curved surface optical lens from the host end and places it exclusively at the lens end. This extraction simplifies the host end's optical design while maintaining the image quality function through the curved lens at the lens end, directly resolving the contradiction between image quality and design complexity.
Solution Approach 2:
The patent segments the optical system into two distinct parts: a simplified host end without curved optical lenses and a lens end with curved optical lenses. This segmentation allows each part to be optimized independently, reducing overall system complexity while preserving imaging functionality.
2Measurement precision
If focus adjustment mechanism with higher precision is arranged at the lens end, then imaging precision is improved, but manufacturing difficulty and cost increase
Solution Approach 1:
The patent replaces complex mechanical focus adjustment mechanisms with a linear movement mechanism. The image capture module moves linearly along the optical axis to achieve focus adjustment, which is simpler to manufacture than traditional cam ring or multi-component mechanical systems while maintaining sufficient focusing precision.
3Adaptability or versatility
If multiple lenses are coupled with the host for different purposes, then versatility is improved, but optical design becomes more complicated
Solution Approach 1:
The patent creates a universal host end that can accommodate multiple different optical lens modules through a standardized interface. The host end remains optically simple and unchanged, while the lens end can be swapped with different curved optical lenses for different imaging purposes, achieving versatility without increasing host 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 system achieves better image quality and reduced manufacturing difficulty and costs by allowing for interchangeable lenses with a simplified optical design and linear focus adjustment, enabling effective imaging of various affected parts.
Implementation Method 1
The optical lenses have a plurality of curved surfaces for converging the reflected light on the image capture module
Implementation Method 2
The light source is positioned off an optical axis of the optical lens for providing illumination light to illuminate the affected part
Implementation Method 3
The focus adjustment module is used for driving the image capture module to physically and linearly move along an image capturing direction
Data Source
AI summary
A digital diagnostic system with interchangeable lenses includes a host and at least one optical lens module, wherein the host without any optical lens having curved surface includes a focus adjustment module which drives an image capture module to linearly move. Therefore, the optical system of the optical lens module can be designed independently, and no need to include focus adjustment mechanism, so that the optical design of the optical lens module can be greatly simplified, and the system allows a greater mechanism tolerance, thereby reducing manufacturing difficulty and manufacturing cost.