Unlock instant, AI-driven research and patent intelligence for your innovation.
Optical system, camera module and electronic device
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An optical system, optical axis technology, used in optics, optical components, instruments, etc.
Inactive Publication Date: 2021-07-23
JIANGXI JINGCHAO OPTICAL CO LTD
View PDF0 Cites 2 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] Based on this, it is necessary to provide an optical system, a camera module and an electronic device for how to better suppress distortion.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
no. 1 example
[0104] refer to figure 1 , in the first embodiment, the optical system 10 sequentially includes a first lens L1 with negative refractive power, an aperture stop STO, a second lens L2 with positive refractive power, and a second lens L2 with negative refractive power from the object side to the image side. Three lenses L3, a fourth lens L4 with positive refractive power, and a fifth lens L5 with positive refractive power. The surface shape of each lens surface in the optical system 10 is as follows:
[0105] The object side S1 of the first lens L1 is concave at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is convex at the circumference, and the image side S2 is concave at the circumference.
[0106] The object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is convex at the near optical axis; the object side S3 is convex at the circumference, and the image side S4 is convex at the c...
no. 2 example
[0147] refer to Figure 4 , in the second embodiment, the optical system 10 sequentially includes a first lens L1 with negative refractive power, an aperture stop STO, a second lens L2 with positive refractive power, and a second lens L2 with negative refractive power from the object side to the image side. Three lenses L3, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power. The surface shape of each lens surface in the optical system 10 is as follows:
[0148] The object side S1 of the first lens L1 is concave at the near optical axis, and the image side S2 is convex at the near optical axis; the object side S1 is convex at the circumference, and the image side S2 is concave at the circumference.
[0149] The object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is convex at the near optical axis; the object side S3 is concave at the circumference, and the image side S4 is convex at the...
no. 3 example
[0165] refer to Figure 7 , in the third embodiment, the optical system 10 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, an aperture stop STO, and a first lens L1 with positive refractive power from the object side to the image side. Three lenses L3, a fourth lens L4 with negative refractive power, and a fifth lens L5 with positive refractive power. The surface shape of each lens surface in the optical system 10 is as follows:
[0166] The object side S1 of the first lens L1 is concave at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is convex at the circumference, and the image side S2 is concave at the circumference.
[0167] The object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is concave at the near optical axis; the object side S3 is convex at the circumference, and the image side S4 is concave at the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention relates to an optical system, a camera module and an electronic device. The optical system comprises, in order from an object side to an image side along an optical axis: a first lens element with refractive power having a concave object-side surface in a paraxial region thereof; a second lens element with positive refractive power; a third lens; a fourth lens, the object side surface and the image side surface of the fourth lens being aspheric surfaces; a fifth lens, having an object-side surface being convex in a paraxial region thereof, and at least one of the object-side surface and the image-side surface thereof having a non-rotationally symmetric surface, the non-rotationally symmetric surface being symmetric about the X-axis and the Y-axis. The optical system satisfies the following relation: |(fx5 + fy5)| / (fx + fy) < 22; fx5 is the effective focal length of the fifth lens in the X direction, fy5 is the effective focal length of the fifth lens in the Y direction, fx is the effective focal length of the optical system in the X direction, and fy is the effective focal length of the optical system in the Y direction. The above design is beneficial for the optical system to effectively suppress optical distortion.
Description
technical field [0001] The invention relates to the technical field of photography and imaging, in particular to an optical system, a camera module and electronic equipment. Background technique [0002] In traditional camera equipment, poorly designed optical systems often lead to excessive aberrations, which adversely affect imaging quality. Among the various imaging aberrations of the optical system, the distortion aberration is more obvious and easily perceived by human eyes. Distortion is the degree of distortion of the image formed by the optical system on the object relative to the object itself, which will cause the deformation of the image, such as the distortion of a straight line into a curve. In particular, when the distortion is greater than 5%, the human eye can obviously perceive the deformation of the imaging picture, and thus can judge whether the imaging quality is good or bad. [0003] Generally, the method of suppressing distortion is mainly to suppress...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More