Eleven-Lens Camera Module Layout for Slim High-Resolution Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing camera modules face challenges in achieving high optical performance with multiple lenses due to difficulties in deriving excellent optical properties and aberration properties, while also facing issues with increased size and thickness, which complicates integration into compact devices.
Innovation Solution
An optical system comprising first to eleventh lenses arranged along an optical axis, with specific refractive powers, shapes, and angles, including a first lens with a meniscus shape convex toward the object side and an eleventh lens with a concave sensor-side surface, along with a unique arrangement of lens groups and distances to maintain a slim structure and improved optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a plurality of lenses is included to improve optical performance, then optical properties and resolution are improved, but the overall length and size of the module increase
Solution Approach 1:
The optical system is divided into multiple lens groups (first lens group with positive refractive power, second lens group with negative refractive power, and third lens group with positive refractive power). This segmentation allows each group to contribute differently to optical performance while maintaining a compact overall structure through optimized grouping and spacing.
Solution Approach 2:
The patent employs a nested arrangement where lens groups are positioned in sequence along the optical axis with optimized spacing. The intermediate image formation by the first lens group allows subsequent groups to be positioned more compactly, creating a nested-like structure that improves optical performance without proportionally increasing overall length.
2Measurement precision
If the size of the image sensor is increased to realize high-resolution, then high-definition imaging is achieved, but the TTL of the optical system increases, thereby increasing the thickness
Solution Approach 1:
The patent optimizes key parameters including the refractive powers of each lens group, the spacing between groups, and the focal lengths to achieve a compact TTL. By carefully balancing these parameters, the system supports larger image sensors for high-resolution imaging while maintaining reduced thickness through efficient optical path design.
3Measurement precision
If a plurality of lenses is included to improve optical performance, then aberration correction is improved, but the device complexity increases
Solution Approach 1:
Different lens groups are assigned specific functions: the first lens group with positive refractive power handles initial light convergence, the second lens group with negative refractive power corrects specific aberrations, and the third lens group with positive refractive power provides final focusing. This local specialization of quality allows effective aberration correction while managing overall system complexity through functional division.
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 optical system achieves improved aberration characteristics, resolving power, and optical performance at the center and periphery of the field of view, while maintaining a slim structure, suitable for compact camera modules.
Implementation Method 1
the first lens has positive refractive power on the optical axis and has a meniscus shape convex toward the object side
Implementation Method 2
the eleventh lens has a negative refractive power on the optical axis and has a concave sensor-side surface
Data Source
AI summary
An optical system disclosed in the embodiment of the invention comprises first to eleventh lenses arranged along the optical axis toward a sensor side from an object side, wherein the first lens has positive refractive power on the optical axis and has a meniscus shape convex toward the object side, the eleventh lens has a negative refractive power on the optical axis and has a concave sensor-side surface, the sensor-side surface of the eleventh lens has a critical point between the optical axis and an end of an effective region, object-side and sensor-side surfaces of the tenth lens are provided without a critical point from the optical axis to an end of an effective region, and object-side and sensor-side surfaces of the tenth lens may have an inclination angle of 10 degrees or less from the optical axis to 43% or more of an effective radius of the tenth lens.