Wide-Angle Camera Lens Assembly With Compact Tilt-Stable Optics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Camera lens assemblies with large field-of-view face challenges in flexibility and size, particularly in space-constrained applications like drone aerial photography and smartphone front-facing cameras, due to their increased size and weight.
Innovation Solution
A camera lens assembly design featuring specific refractive indices, spacing elements, and optical configurations that allow for a wide field-of-view while minimizing size and weight, including lenses with inflection points and controlled spacing distances and diameters to enhance stability and reduce stray light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the field-of-view is increased to achieve wider imaging coverage, then the imaging capability is improved, but the size and weight of the lens assembly increase
Solution Approach 1:
The patent applies parameter changes by optimizing the refractive indices of individual lenses (N2, N3, N4, N5, N6) and their spacing distances (d1, d2, d3, d4, d5) to achieve a wide field-of-view exceeding 101 degrees while maintaining a compact form factor. The specific parameter ranges are designed to balance optical performance with reduced size and weight.
Solution Approach 2:
The lens assembly is segmented into six individual lenses with different refractive powers and material properties. This segmentation allows each lens to contribute differently to the overall optical system, enabling wide-angle imaging while controlling the total size and weight through optimized individual component design.
2Adaptability or versatility
If the field-of-view is increased to achieve wider imaging coverage, then the imaging capability is improved, but the size of the lens assembly increases
Solution Approach 1:
The patent uses parameter changes by precisely controlling the spacing distances between lenses (d1, d2, d3, d4, d5) and their refractive indices to achieve a compact head and base design. The optimized parameters enable a field-of-view exceeding 101 degrees while maintaining a small overall size suitable for space-constrained applications.
Solution Approach 2:
The patent employs aspheric surfaces with inflection points on lenses E5 and E6, utilizing complex surface geometry in another dimension to achieve wide-angle imaging performance without proportionally increasing the linear dimensions of the lens assembly.
3Length of moving object
If the lens assembly is made compact to reduce size, then the adaptability to space-constrained applications is improved, but the imaging quality may deteriorate
Solution Approach 1:
The patent maintains high imaging quality in a compact design by optimizing parameters including the refractive indices (N2, N3, N4, N5, N6) of lens materials, spacing distances (d1, d2, d3, d4, d5) between lenses, and focal lengths (f1, f2, f3, f4, f5, f6) of individual elements. These parameter optimizations ensure minimal distortion and high image quality despite the reduced size.
Solution Approach 2:
The patent uses aspheric surfaces with inflection points on lenses E5 and E6 to correct optical aberrations in the compact design. The complex curvature profiles enable high imaging quality by reducing distortion and improving focus, while maintaining a small overall lens assembly size.
4Length of moving object
If the spacing between lenses is reduced to minimize size, then the compactness is improved, but the control of stray light and imaging stability becomes more difficult
Solution Approach 1:
The patent controls stray light and imaging stability in the compact design by optimizing the spacing distances (d1, d2, d3, d4, d5) between lenses to specific ranges. These parameter optimizations ensure that despite reduced spacing, the lens assembly maintains resistance to stray light and reduced sensitivity to assembly tilt, while achieving a compact form factor.
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 a wide field-of-view exceeding 101 degrees with a compact form factor, improved imaging quality, and reduced sensitivity to assembly tilt, ensuring stability and minimizing dark corners and stray light.
Implementation Method 1
The optical lens group includes, sequentially along an optical axis from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6, which have refractive powers
Data Source
AI summary
The present disclosure discloses a camera lens assembly, which includes an optical lens group, a spacing element group and a lens barrel. The optical lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The spacing element group includes a second spacing element, a third spacing element, and a fourth spacing element; an inner diameter d0m of an image-side end surface of the lens barrel and half of a maximal field-of-view Semi-FOV of the camera lens assembly satisfy: 4.2 mm<d0m/tan(Semi-FOV)<5.0 mm; and a spacing distance EP23 between the second spacing element and the third spacing element in a direction of the optical axis, an air gap T23 between the second lens and the third lens on the optical axis, and an air gap T34 between the third lens and the fourth lens on the optical axis satisfy:0.9<EP23/(T23+T34)<1.8.