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Optical system, image capturing module and electronic equipment

An optical system and optical axis technology, applied in the field of photography, can solve the problem that the camera lens is difficult to take into account the wide-angle characteristics and high imaging quality.

Active Publication Date: 2021-12-17
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide an optical system, imaging module and electronic equipment for the problem that the current camera lens is difficult to achieve both wide-angle characteristics and high imaging quality.

Method used

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  • Optical system, image capturing module and electronic equipment
  • Optical system, image capturing module and electronic equipment
  • Optical system, image capturing module and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0082] See figure 1 with figure 2 , figure 1 It is a structural schematic diagram of the optical system 100 in the first embodiment. The optical system 100 includes a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, a diaphragm STO, and a lens with The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. figure 2 From left to right are the graphs of longitudinal spherical aberration, astigmatism and distortion of the optical system 100 in the first embodiment, where the reference wavelength of the astigmatism graph and distortion graph is 555nm, and other embodiments are the same.

[0083] The object side S1 of the first lens L1 is concave at the near optical axis 110 and concave at the circumference;

[0084]The image side S2 of the first lens L1 is concave at the near optical axi...

no. 2 example

[0120] See image 3 with Figure 4 , image 3 It is a structural schematic diagram of the optical system 100 in the second embodiment. The optical system 100 includes a first lens L1 with a negative refractive power, a second lens L2 with a positive refractive power, a stop STO, and a The third lens L3 with positive refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. Figure 4 From left to right are the graphs of longitudinal spherical aberration, astigmatism and distortion of the optical system 100 in the second embodiment.

[0121] The object side S1 of the first lens L1 is concave at the near optical axis 110 and concave at the circumference;

[0122] The image side S2 of the first lens L1 is concave at the near optical axis 110 and convex at the circumference;

[0123] The object side S3 of the second lens L2 is a convex surface at the near optical a...

no. 3 example

[0146] See Figure 5 with Image 6 , Figure 5 It is a structural schematic diagram of the optical system 100 in the third embodiment. The optical system 100 includes a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, a stop STO, and a The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. Image 6 From left to right are the graphs of longitudinal spherical aberration, astigmatism and distortion of the optical system 100 in the third embodiment.

[0147] The object side S1 of the first lens L1 is concave at the near optical axis 110 and concave at the circumference;

[0148] The image side S2 of the first lens L1 is concave at the near optical axis 110 and concave at the circumference;

[0149] The object side S3 of the second lens L2 is a convex surface at the near optical axis 1...

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Abstract

The invention relates to an optical system, an image capturing module and electronic equipment. The optical system includes: a first lens with negative refractive power, wherein the object-side surface of the first lens is a concave surface in a paraxial region; a second lens with refractive power, wherein the object-side surface of the second lens is a convex surface in a paraxial region, and the image-side surface of the second lens is a concave surface in a paraxial region; a third lens with positive refractive power, wherein the object-side surface of the third lens is a convex surface in a paraxial region, and the image-side surface of the third lens is a convex surface in a paraxial region; a fourth lens with refractive power; a fifth lens with positive refractive power, wherein the image-side surface of the fifth lens is aconvex surface in a paraxial region; and a sixth lens element with negative refractive power, wherein the object-side surface of the sixth lens is aconvex surface in a paraxial region, the image-side surface of the sixth lens is aconcave surface in a paraxial region, and the optical system satisfies that f1 / f6 is more than or equal to 1.4 and less than or equal to 2.5. According to the optical system, the wide-angle characteristic and the high imaging quality can be realized at the same time.

Description

technical field [0001] The invention relates to the field of imaging, in particular to an optical system, an imaging module and electronic equipment. Background technique [0002] With the gradual popularization of electronic devices such as smartphones and tablet computers, consumers have higher and higher requirements for the shooting performance of camera lenses. Among them, more and more electronic devices are equipped with camera lenses with wide-angle characteristics to meet the demand for shooting with a large field of view, so that the camera lenses can be applied to more usage scenarios. Moreover, while having wide-angle characteristics, image quality is also an important indicator used by the industry to evaluate camera shooting performance. However, the realization of wide-angle characteristics usually easily leads to the degradation of imaging quality, and the current camera lens is difficult to achieve both wide-angle characteristics and high imaging quality. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0015G02B13/0045G02B13/006G02B13/06G03B30/00
Inventor 华露刘彬彬杨健李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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