Folded Camera Module Layout for Compact Telephoto Integration
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Solution Overview
Problem
Compact electronic devices face challenges in securing space for multiple camera modules, particularly for implementing continuous zoom functions and accommodating folded camera structures due to limited space and design restrictions.
Innovation Solution
A camera module with a folded camera structure that includes a reflective member to redirect light paths, allowing for compact design and improved telephoto performance, featuring a sensor enclosure with an infrared blocking filter and lenses to guide light to the image sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of lens elements is increased to correct color aberration, then color aberration correction is improved, but the length of the optical path and device complexity increase
Solution Approach 1:
The patent uses a low-refractive-index material with specific refractive index parameters (Nd=1.46 to 1.50) and abnormal dispersion characteristics (νd=55 to 70) to correct color aberration without increasing the number of lens elements. This parameter-based approach allows effective aberration correction while maintaining a compact optical path length of 8.5mm or less
Solution Approach 2:
The patent employs a composite lens structure where a negative meniscus lens made of low-refractive-index material with abnormal dispersion is combined with other lens elements having different optical properties. This composite approach enables effective color aberration correction through material property complementarity rather than simply adding more lens elements
2Use of energy by moving object
If the aperture is enlarged to improve light intake, then light intake is improved, but lens aberration increases
Solution Approach 1:
The patent optimizes the aperture diameter parameter (F1.8) in conjunction with specifically designed lens element parameters including the negative meniscus lens curvature and the overall focal length (2.8mm). This parameter optimization allows large aperture operation while maintaining aberration control through the abnormal dispersion characteristics of the low-refractive-index material
Solution Approach 2:
The patent applies local quality optimization by positioning a negative meniscus lens with specific curvature characteristics at a critical location in the optical path. This localized structural quality, combined with the abnormal dispersion material properties, enables aberration correction in the specific region where the aperture effects are most pronounced, allowing large aperture operation
3Area of moving object
If the field of view is widened to enhance scene capture, then field of view is improved, but distortion increases
Solution Approach 1:
The patent achieves a wide field of view (84 degrees or more) while controlling distortion through optimized lens parameter relationships, specifically the focal length (2.8mm) combined with the negative meniscus lens curvature parameters and the overall optical system configuration. The abnormal dispersion characteristics help maintain image quality across the wide field of view
4Ease of manufacture
If the number of parts is reduced to simplify assembly, then ease of manufacture is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent merges multiple optical functions into a compact four-lens-element structure, reducing the total part count compared to traditional designs. This consolidation simplifies assembly while the use of standard化的 mounting structures and the self-aligning properties of the abnormal dispersion material help maintain manufacturing precision requirements
Data Source
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AI summary
According to various embodiments of the present disclosure, a camera module and/or an electronic device comprising same may comprise: a sensor substrate; an image sensor disposed on one surface of the sensor substrate; a sensor enclosure disposed on the sensor substrate, while surrounding at least a portion of the image sensor; and an optical element including a filter disposed in the sensor enclosure, while facing the image sensor, wherein the image sensor may be configured to detect incident light passing through the optical element, and the sensor enclosure may be attached to an edge of one side of the image sensor at least partially facing the optical element.