Composite Array Camera Lens Module for Vehicle Safety
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Solution Overview
Problem
Current vehicle safety systems require complex and costly calibration of multiple lenses with different focal lengths for accurate distance and speed detection, leading to potential misjudgment and increased assembly costs, as well as limitations in image information and detection errors if not properly aligned.
Innovation Solution
A composite array camera lens module comprising two lens layers with different types of lenses, including positive and negative lenses, aligned to form camera lenses with varying focal lengths and fields of view, allowing for easy assembly and alignment on a single image sensor, reducing calibration needs and enhancing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple lenses with different focal lengths are used for wide-angle and telephoto detection, then detection accuracy is improved, but assembly cost and calibration complexity increase
Solution Approach 1:
The patent divides the lens system into multiple independent lens modules, each with different focal lengths (wide-angle and telephoto). Each lens module can be independently manufactured and calibrated, then assembled together. This segmentation allows separate calibration of individual modules rather than complex calibration of the entire multi-lens system, reducing overall calibration complexity while maintaining detection accuracy through the combination of multiple focal lengths.
Solution Approach 2:
The patent designs a universal lens module structure that can serve multiple functions - both wide-angle and telephoto detection. The standardized module design with consistent mounting interfaces and calibration procedures allows the same basic structure to be used across different focal length requirements, reducing the need for specialized calibration procedures for each lens type and thereby reducing overall calibration complexity.
2Reliability
If more lenses are used for comprehensive image capture, then detection reliability is improved, but alignment and calibration difficulty increase
Solution Approach 1:
The patent segments the multi-lens system into standardized modules that can be independently aligned and calibrated. Each module maintains fixed internal alignment between its lenses, and the modular design provides standardized mounting features that simplify the alignment process when assembling multiple modules together. This reduces the overall alignment difficulty compared to manually aligning individual lenses while maintaining detection reliability through multiple lenses.
Solution Approach 2:
The patent performs preliminary alignment and calibration within each individual lens module before final assembly. The internal alignment of lenses within each module is pre-established during module manufacturing, so that when modules are assembled together, only the relative positioning between modules needs to be calibrated. This preliminary action significantly reduces the alignment difficulty of the complete multi-lens system while maintaining reliability through the use of multiple properly aligned lenses.
3Device complexity
If a single lens is adjusted for wide-angle/telephoto effect, then device simplicity is maintained, but switching speed is insufficient for high-speed vehicle detection
Solution Approach 1:
The patent implements a dynamic lens module selection mechanism that can quickly switch between different focal length modules based on detection requirements. Instead of mechanically adjusting a single lens (which is slow), the system can rapidly exchange or activate different pre-configured lens modules. This dynamic approach maintains relative device simplicity while achieving high switching speeds suitable for high-speed vehicle detection applications.
Solution Approach 2:
The patent segments the optical system into independent lens modules with different focal lengths, allowing the system to select and switch between modules rather than adjusting a single lens. This segmentation enables fast switching by simply changing which module is active or positioned in the optical path, avoiding the slow mechanical adjustment of lens elements while maintaining device simplicity through the standardized modular architecture.
4Adaptability or versatility
If traditional multi-lens design is used for different focal lengths, then focal length variety is achieved, but assembly cost increases due to calibration requirements
Solution Approach 1:
The patent segments the multi-focal-length system into standardized lens modules that can be independently manufactured and calibrated. Each module is designed with consistent interfaces and calibration procedures, allowing them to be produced through standardized manufacturing processes. This segmentation enables focal length variety through different module types while reducing assembly cost by eliminating the need for custom calibration of each individual lens assembly.
Solution Approach 2:
The patent creates a universal lens module platform that can accommodate different focal lengths through standardized designs. The same basic module structure and calibration procedure can be used across multiple focal length variants, making the manufacturing process more efficient and reducing assembly costs. The universal design allows focal length variety to be achieved through configuration rather than completely different assembly procedures.
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 enables efficient and accurate detection of objects at different distances and speeds with simplified assembly, reducing costs and errors, while allowing for fast image switching and comparison, facilitating full-speed-range object detection.
Implementation Method 1
The first-type lens and the third-type lens are positive lenses and form a first camera lens with a first effective focal length
Implementation Method 2
The second-type lens and the fourth-type lens are a negative lens and a positive lens, respectively, and form a second camera lens with a second effective focal length
Data Source
AI summary
Disclosed is a composite array camera lens module, including: a first lens layer disposed at a position from a diaphragm toward an object space having a first-type lens and a second-type lens; a second lens layer disposed at a position from the diaphragm toward an image space having a third-type lens and a fourth-type lens, wherein the first-type lens and the third-type lens are positive lenses and form a first camera lens with a first effective focal length, and the second-type lens and the fourth-type lens are a negative lens and a positive lens, respectively, and form a second camera lens with a second effective focal length less than the first effective focal length; and an image sensor arranged at a side of the second lens layer away from the diaphragm, wherein the first lens layer, the second lens layer and the image sensor are designed to be parallel flat planes.