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Optical system, camera module, electronic equipment and carrier

An optical system and optical axis technology, applied in the fields of electronic equipment and vehicles, optical systems, and camera modules

Pending Publication Date: 2021-05-25
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an optical system, a camera module, electronic equipment and a carrier for how to improve imaging distortion.

Method used

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  • Optical system, camera module, electronic equipment and carrier
  • Optical system, camera module, electronic equipment and carrier
  • Optical system, camera module, electronic equipment and carrier

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0090] refer to figure 1 and figure 2 , in the first embodiment, the optical system 10 sequentially includes a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, and a second lens L2 with negative refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with positive refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, the sixth lens L6 with negative refractive power, and the seventh lens L7 with positive refractive power. figure 2 It includes the longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the first embodiment, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 546 nm.

[0091] The object side S1 of the first lens L1 is concave, and the image side S2 is convex.

[0092] The object side S3 of the second le...

no. 2 example

[0120] refer to image 3 and Figure 4 , in the second embodiment, the optical system 10 sequentially includes a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, and a second lens L2 with negative refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with positive refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, the sixth lens L6 with negative refractive power, and the seventh lens L7 with positive refractive power. Figure 4 It includes the longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in this embodiment, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 546 nm.

[0121] The object side S1 of the first lens L1 is concave, and the image side S2 is convex.

[0122] The object side S3 of the second lens L...

no. 3 example

[0138] refer to Figure 5 and Figure 6 , in the third embodiment, the optical system 10 sequentially includes a first lens L1 with negative refractive power, a stop STO, a second lens L2 with positive refractive power, and a second lens L2 with negative refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with positive refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, the sixth lens L6 with negative refractive power, and the seventh lens L7 with positive refractive power. Figure 6 It includes the longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in this embodiment, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 546 nm.

[0139] The object side S1 of the first lens L1 is concave, and the image side S2 is convex.

[0140] The object side S3 of the second lens L...

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Abstract

The invention relates to an optical system, a camera module, electronic equipment and a carrier. The optical system comprises, in order from an object side to an image side along an optical axis: a first lens element with negative refractive power having a convex image-side surface at least in a paraxial region thereof; a second lens element with positive refractive power; a third lens element with negative refractive power having an image-side surface being convex at least in a paraxial region thereof; a fourth lens element with positive refractive power having an object-side surface being convex at least in a paraxial region thereof; a fifth lens element with positive refractive power; a sixth lens element with negative refractive power; and a seventh lens element with positive refractive power having an object-side surface being convex at least in a paraxial region thereof. The optical system satisfies the following relation: 2*f*tan (FOV / 2) is greater than 9mm and less than 10mm; and f is the effective focal length of the optical system, and FOV is the maximum field angle of the optical system. The optical system can restrain distortion, improve the resolving power and reduce the distortion risk of an edge area in a shot picture.

Description

technical field [0001] The invention relates to the technical field of photography and imaging, in particular to an optical system, a camera module, electronic equipment and a carrier. Background technique [0002] As the market's requirements for driving safety gradually increase, technologies such as assisted driving technology and automatic driving technology that can quickly detect the surrounding environment of the vehicle and feed back to the driver or automatic driving system have also been greatly developed. The above-mentioned technologies can provide drivers or automatic driving systems with monitoring, prediction and analysis of road conditions, so as to improve driving safety. [0003] In the common assisted driving technology, automatic driving technology and other technologies, the acquisition of the road condition environment is very important, and the camera lens is often used to obtain the road condition in general vehicles, and then the image is analyzed by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045
Inventor 乐宇明蔡雄宇周宝赵迪
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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