Curved Transparent Cover for Wide-Angle Camera Imaging
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Solution Overview
Problem
The existing camera lenses have a limited field angle due to the production constraints of the transparent cover, which restricts their ability to capture a large monitoring range effectively.
Innovation Solution
A transparent cover with a curved sidewall portion featuring a preset continuous curve, comprising a first and second curve segment with controlled curvature and back focus offsets, allows for a wider field angle, enabling the camera lens to achieve a larger monitoring range while maintaining clear images by controlling aberrations within an allowable range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the transparent cover is designed with a larger protective area to enable monitoring in a larger range, then the monitoring range is improved, but the field angle of the camera lens is limited due to production constraints of the transparent cover
Solution Approach 1:
The transparent cover employs a curved sidewall portion with a specifically designed continuous curve that has controlled curvature values. This curvature design allows light beams to pass through the transparent cover to the image sensor while maintaining a clear image, thereby enabling a larger field angle and monitoring range without compromising production feasibility
Solution Approach 2:
The patent controls specific parameters including curvature values (no more than a first preset value), back focus offsets (first back focus offset no more than a second preset value, second back focus offset no more than a third preset value), and included angles (greater than 0°). By optimizing these parameters, the design achieves both a large protective area and adequate field angle
2Area of moving object
If the curvature of the transparent cover is increased to expand the monitoring range, then the monitoring range is improved, but image quality deteriorates due to increased aberrations
Solution Approach 1:
The patent establishes specific parameter ranges to balance monitoring range and image quality: curvature no more than a first preset value, first back focus offset no more than a second preset value, second back focus offset no more than a third preset value. These parameter constraints ensure that aberrations remain within an allowable range while still achieving a large monitoring range
Solution Approach 2:
The continuous curve design with controlled curvature allows the transparent cover to expand the monitoring range while maintaining proper light path geometry. The curvature is optimized to prevent excessive aberrations that would degrade image quality on the image sensor
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 ensures complete and clear images are obtained by the image sensor, accommodating larger monitoring ranges and tilting movements of the camera, while also improving the deformation resistance and reducing the need for heavy, expensive magnet-based locking mechanisms.
Implementation Method 1
Light beams enter the camera lens and are projected on the image plane of the image sensor of the camera. The curved surface corresponding to the first curve segment and the second curve segment refracts light to enable a wider field angle while controlling aberrations.
Data Source
AI summary
A transparent cover of an optical camera system comprises a curved sidewall portion having an outer contour formed by the rotation of a preset continuous curve. The preset continuous curve comprises a first curve segment and a second curve segment, each having a curvature no more than a first preset value, wherein the first back focus offset of a curved surface corresponding to the first curve segment does not exceed the second preset value, and a second back focus offset of a curved surface corresponding to the second curve segment does not exceed a third preset value. A first line segment is formed by connecting an end point of the preset continuous curve with a center of a circle circumscribing edges of a camera, and an included angle between the first line segment and a boundary line between the first and second curve segments is greater than 0.