Five-Lens Optical System for Compact Cameras
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Solution Overview
Problem
Traditional optical image capturing systems in portable electronic devices struggle to meet higher filming requirements due to limited light admission, particularly in micro filming and night filming, as they cannot effectively increase the amount of admitted light, leading to subpar image quality.
Innovation Solution
The implementation of a compact optical image capturing system utilizing a combination of five optical lenses with specific refractive powers and surface geometries, including convex and concave surfaces, to enhance light admission and improve image quality, while maintaining a miniaturized design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional three-lens or four-lens design structure is used, then device complexity is reduced, but light admission is insufficient
Solution Approach 1:
The patent combines five lens elements into a unified optical system where each lens contributes to both imaging and light gathering. The first lens (negative refractive power) and subsequent lenses work together to expand the effective aperture while maintaining compact form factor, resolving the contradiction between increased light admission and device complexity.
Solution Approach 2:
The optical system is segmented into five distinct lens elements with specific refractive powers and surface curvatures. This segmentation allows each lens to be optimized for specific functions (light gathering, focusing, aberration correction) while collectively achieving superior light admission compared to traditional three or four-lens designs.
2Measurement precision
If pixel counts are increased, then image quality is improved, but demand on light admission increases
Solution Approach 1:
The patent changes key optical parameters including the refractive powers of individual lenses (first lens: negative, second lens: positive, third lens: positive, fourth lens: negative, fifth lens: positive), surface curvatures (convex and concave surfaces at different heights), and lens spacing to optimize light admission. These parameter changes enable the system to deliver sufficient illumination for high pixel count sensors while maintaining image quality.
3Illumination intensity
If aperture is increased for micro filming and night filming, then light admission is improved, but optical system size increases
Solution Approach 1:
The patent utilizes the vertical dimension by designing convex and concave surfaces at different heights from the optical axis. This dimensional approach allows the system to increase effective aperture and light admission without proportionally increasing the horizontal footprint, enabling better performance in micro filming and night filming while maintaining miniaturized form factor suitable for portable electronic devices.
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
This configuration significantly increases light admission and improves image quality, enabling better performance in high-demand filming scenarios such as micro filming and night vision, while being suitable for miniaturized electronic products.
Implementation Method 1
combinations of refractive powers of five pieces of optical lenses along with convex and concave surfaces of the five pieces of optical lenses
Data Source
AI summary
The invention discloses a five-piece optical lens for capturing image and a five-piece optical module for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; and at least one of the image-side surface and object-side surface of each of the five lens elements is aspheric. The optical lens can increase aperture value and improve the imaging quality for use in compact cameras.