UAV Camera Lens Layout for Compact High-Resolution Imaging
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Solution Overview
Problem
The miniaturization of camera lenses conflicts with the optimization of imaging effect, particularly for high-resolution lenses used in miniature single-lens reflex cameras and unmanned aerial vehicles, as the size of the imaging surface is inversely proportional to the lens size, making it difficult to achieve both compactness and high-quality imaging.
Innovation Solution
A camera lens design comprising a first lens group with negative and positive refractive powers, a diaphragm, a second lens group with positive, negative, and positive or negative refractive powers, and a third lens group with positive refractive powers, utilizing aspherical and spherical lenses to achieve a compact 4K or higher resolution and 1-inch imaging surface with a 32 mm or shorter optical length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lens size is reduced for miniaturization, then the volume and weight of the camera lens are reduced, but the imaging quality deteriorates due to smaller imaging surface
Solution Approach 1:
The lens is divided into three distinct lens groups (first, second, and third lens groups) with different refractive power configurations. This segmentation allows each group to contribute differently to the overall optical performance, enabling high imaging quality while maintaining a compact form factor suitable for 4K or higher resolution with 1-inch imaging surface.
Solution Approach 2:
The patent employs aspherical lenses (ninth lens with concave image-side surface, and second and seventh lenses as aspherical) to change the geometric parameters of the optical elements. This parameter change enables better control of light paths and aberrations, achieving superior imaging quality in a reduced-size lens configuration with TTL/IH≤1.63.
2Manufacturing precision
If the imaging surface size is increased to accommodate more pixels for high resolution, then the imaging quality is improved, but the lens size and optical length increase
Solution Approach 1:
The patent configures the lens groups with dynamic refractive power relationships that can be optimized for different imaging conditions. The specific arrangement of positive and negative refractive powers in each lens group creates a dynamic optical system that achieves 4K or higher resolution with controlled optical length through precise focal length relationships.
Solution Approach 2:
The patent transitions from traditional spherical lens designs to incorporating aspherical surfaces (particularly the ninth lens with concave image-side surface and other aspherical lenses). This dimensional change in lens surface geometry enables achieving high resolution on 1-inch imaging surface with reduced optical length by efficiently controlling light paths in the optical dimension.
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 design achieves high-quality imaging with a small form factor, meeting astigmatism, distortion, and chromatic aberration standards, enabling a compact and portable camera lens suitable for unmanned aerial vehicles.
Implementation Method 1
a first lens group including a first lens having a negative refractive power and a second lens having a positive refractive power; a second lens group including a third lens having a positive refractive power, a fourth lens having a positive refractive power, a fifth lens having a positive or negative refractive power, a sixth lens having a negative refractive power, and a seventh lens having a negative refractive power
Implementation Method 2
the ninth lens is an aspherical lens and a surface thereof near an image side is concave. the second lens and the seventh lens are aspherical lenses
Data Source
AI summary
A camera lens is installed in an unmanned aerial vehicle. The camera lens includes, from an object side to an image side, a first lens group, a second lens group, a diaphragm, and a third lens group. The first lens group includes a first lens having a negative refractive power and a second lens having a positive refractive power. The second lens group includes a third lens having a positive refractive power, a fourth lens having a positive refractive power, a fifth lens having a positive or negative refractive power, a sixth lens having a negative refractive power, and a seventh lens having a negative refractive power. The third lens group including an eighth lens having a positive refractive power and a ninth lens having a positive or negative refractive power. The camera lens needs only nine lenses to achieve high-quality imaging for the unmanned aerial vehicle.