Three-Lens Optical System for Compact Camera Aberration Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional optical systems for portable electronic devices face challenges such as large aberration, poor image quality at the periphery, and manufacturing difficulties due to the need for large apertures and wide angles, while also requiring high pixels, high image quality, and compact size.
Innovation Solution
A compact optical image capturing system using a combination of three-piece optical lenses with refractive powers, convex and concave surfaces, and inflection points to adjust the incident angle and modify aberrations, improving light entry and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the aperture is increased to capture more light in dark environments, then the quantity of light entering the lens is improved, but aberration increases and image quality at the periphery deteriorates
Solution Approach 1:
The optical system is divided into three separate lenses instead of using a single lens or two-piece configuration. Each lens contributes to the overall optical power, allowing better control of light paths and aberrations across different field regions while maintaining large aperture for sufficient light intake.
Solution Approach 2:
Each lens in the three-piece configuration has specifically designed surface curvatures and refractive powers tailored to address local optical requirements. The first lens handles initial light convergence, the second lens corrects intermediate aberrations, and the third lens fine-tunes the focal properties, allowing optimized performance across the entire aperture and field of view.
2Illumination intensity
If the aperture is increased to capture more light, then the quantity of light entering the lens is improved, but the system becomes harder to manufacture
Solution Approach 1:
By segmenting the optical system into three lenses, each with moderate optical power requirements, the manufacturing complexity is reduced compared to a single large-aperture lens that would require extreme precision. Each lens can be manufactured with standard tolerances while achieving the cumulative optical effect needed for high-quality imaging.
Solution Approach 2:
The invention changes the parameters of individual lenses (refractive indices, curvatures, thicknesses) to optimize manufacturability. By distributing the optical power across three elements rather than concentrating it in one or two, each component can be fabricated with more relaxed tolerances using conventional manufacturing processes.
3Adaptability or versatility
If wide-angle capability is increased to capture more scene, then the angle of field is improved, but distortion increases
Solution Approach 1:
The three-lens configuration segments the angle-of-field capture function across multiple elements. Each lens handles a portion of the wide-angle requirement, allowing the system to achieve broad field coverage while each individual lens operates within distortion-minimizing parameters. The combined effect of all three lenses corrects distortion that would be excessive in any single element.
Solution Approach 2:
The lenses employ asymmetric surface curvatures and positioning to counteract the inherent distortion of wide-angle optics. By strategically placing inflection points and varying the asymmetry of each lens surface, the system achieves wide field of view while maintaining geometric accuracy across the image plane.
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 system enhances light entry and image quality, reduces aberrations, and achieves high pixel density and compact size, suitable for minimized electronic devices with improved imaging performance.
Implementation Method 1
an optical image capturing system includes a first lens, a second lens, and a third lens in order along an optical axis from an object side to an image side. The first lens has positive refractive power... The third lens has refractive power
Data Source
AI summary
A three-piece optical lens for capturing image and a three-piece optical module for capturing image, along the optical axis in order from an object side to an image side, include a first lens with positive refractive power; a second lens with refractive power; and a third lens with refractive power; and at least one of the image-side surface and object-side surface of each of the three lens elements are aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.