Six-Lens Optical Assembly for High-Pixel Imaging in Tight Space
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Solution Overview
Problem
Existing optical devices face challenges in achieving high-pixel performance while maintaining a compact size, as increased sensor size leads to larger device dimensions, compromising portability, and correcting aberrations is difficult in limited inner spaces of compact electronic devices.
Innovation Solution
A lens assembly comprising multiple lenses with specific refractive powers and Abbe's numbers, arranged to minimize overall length and correct aberrations, allowing for high-pixel image sensors in a small form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an optical device is equipped with an increased sensor size to achieve high-pixel performance, then image quality and resolution are improved, but the overall device size and volume are increased, degrading portability
Solution Approach 1:
The patent implements a nested lens structure where multiple lenses are arranged in sequence along the optical axis with decreasing diameters, creating a compact nested configuration. The first lens has the largest diameter and the second lens has a smaller diameter, allowing the optical system to achieve high-pixel performance while maintaining a small overall volume suitable for portable electronic devices.
Solution Approach 2:
The patent employs specific refractive index ranges (1.4≤nd1<1.6, 1.6≤nd2<1.8) and Abbe's number ranges (20≤Vd1<40, 30≤Vd2<60) to optimize the optical characteristics. By carefully selecting and changing these material parameters, the system achieves high image quality with minimal aberration while maintaining a compact form factor.
2Measurement precision
If multiple lenses are combined to correct aberrations and achieve low F number, then image quality and resolution are improved, but the device complexity and space requirements increase
Solution Approach 1:
The patent assigns different optical characteristics to different lenses based on their specific functions. The first lens is designed with positive refractive power and specific Abbe's number to control chromatic aberration, while the second lens has negative refractive power to correct spherical aberration. This localized optimization of optical properties achieves high image quality with a manageable two-lens configuration.
Solution Approach 2:
The patent optimizes the refractive index and Abbe's number parameters of the lenses to achieve the desired optical performance. By selecting materials with specific ranges (nd1: 1.4-1.6, Vd1: 20-40; nd2: 1.6-1.8, Vd2: 30-60), the system corrects aberrations effectively while keeping the overall system complexity and space requirements manageable.
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 lens assembly achieves high optical performance with minimal size and weight, enabling high-pixel image capture in compact electronic devices by effectively correcting aberrations and maintaining a small form factor.
Implementation Method 1
a first lens having a convex surface facing the object side in a first direction parallel to the optical axis
Implementation Method 2
A lens assembly which can be mounted on a small electronic device, and more particularly to a lens assembly having a compact size such that the lens assembly may be mounted on a small electronic device, and also having a high-pixel performance
Data Source
AI summary
Provided is an electronic device including: a lens assembly having multiple lenses arranged along an optical axis direction from an object side to an image side, the lens assembly including a first lens parallel to the optical axis direction and having a convex surface facing the object side in a first direction, a second lens having a convex surface facing the first direction, a third lens having a positive refractive power, a fourth lens, a fifth lens have a positive refractive power, and a sixth lens; and an image sensor including an imaging plane on which an image is formed. The electronic device may be implemented as a small-sized and high pixel optical device.