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Optical system, camera module and electronic equipment

An optical system and related technology, applied in the field of optical system, camera module and electronic equipment

Pending Publication Date: 2021-06-04
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 and an electronic device for how to compress the length of the telephoto lens and better deal with the details of the distant view.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0095] refer to figure 1 and figure 2 , in the first embodiment, the optical system 10 includes a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a third lens L2 with positive refractive power from the object side to the image side along the optical axis 101. Lens L3, aperture stop STO, fourth lens L4 with negative refractive power, fifth lens L5 with negative refractive power, sixth lens L6 with negative refractive power, and seventh lens L7 with negative refractive power. figure 2 The longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the first embodiment are included, and the reference wavelength of the astigmatism diagram and distortion diagram in each of the following embodiments is 555 nm.

[0096] The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is con...

no. 2 example

[0123] refer to image 3 and Figure 4 , in the second embodiment, the optical system 10 includes a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a third lens L2 with positive refractive power from the object side to the image side along the optical axis 101. Lens L3, aperture stop STO, fourth lens L4 with negative refractive power, fifth lens L5 with positive refractive power, sixth lens L6 with negative refractive power, and seventh lens L7 with negative refractive power. Figure 4 The longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the second embodiment are included.

[0124] The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is convex near the circumference, and the image side S2 is concave near the circumference.

[0125] The object side S3 of the seco...

no. 3 example

[0141] refer to Figure 5 and Figure 6 , in the third embodiment, the optical system 10 sequentially includes a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a third lens L2 with positive refractive power along the optical axis 101 from the object side to the image side. Lens L3, aperture stop STO, fourth lens L4 with positive refractive power, fifth lens L5 with positive refractive power, sixth lens L6 with negative refractive power, and seventh lens L7 with negative refractive power. Figure 6 The longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the third embodiment are included.

[0142] The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is convex near the circumference, and the image side S2 is concave near the circumference.

[0143] The object side S3...

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Abstract

The invention relates to an optical system, a camera module and electronic equipment. The optical system includes, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, a second lens element with negative refractive power having an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region, a third lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof, a fourth lenselement, a fifth lens element having an image-side surface being convex in a paraxial region thereof, a sixth lens element having a concave image-side surface in a paraxial region thereof, and a seventh lens element having an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region, both the object-side surface and the image-side surface being aspheric, and at least one of the object-side surface and the image-side surface having an inflection point. The optical system also satisfies the following condition: 1.004<f / TTL<1.1, f is the effective focal length of the optical system, and TTL is the total optical length of the optical system. The optical system has the characteristics of miniaturization and long focus.

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 recent years, the replacement cycle of mobile phones has become shorter and shorter, and the shooting functions have become more and more powerful. The market's requirements for a single type of lens have become more stringent. As consumers have diverse requirements for shooting environments, there are more and more types of lenses suitable for different shooting environments. Among them, the telephoto lens can obtain a shallower depth of field due to its longer focal length, so it can better handle the details of distant scenes and achieve the imaging effect of compressing the shooting distance. [0003] However, traditional telephoto lenses often have the problems of being too large and not capable of processing the details of the distant scene. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18
CPCG02B13/0045
Inventor 华露杨健李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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