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Optical system, camera module and electronic equipment

An optical system, optical axis technology, applied in optics, optical components, instruments, etc., can solve problems such as decline and inability to meet expected demand

Active Publication Date: 2022-04-29
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the improvement of the portability of mobile devices has put forward higher requirements for the thickness of the camera device, and the demand for image quality improvement has become an inevitable trend; at present, in order to reduce the thickness of the camera device, a camera system with a low-chip structure can be used. However, the imaging quality will decrease in this way, which cannot meet the expected demand; therefore, the problems of improving the lightness of the camera system and maintaining good performance need to be solved urgently

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

[0063] refer to figure 1 , in the first embodiment, the optical system 10 includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with negative refractive power, and the seventh lens L7 with negative refractive power. Each lens surface type of optical system 10 is as follows:

[0064] The object side S1 of the first lens L1 is convex at the near optical axis 101, and the image side S2 is concave at the near optical axis 101; the object side S1 is convex near the circumference, and the image side S2 is convex near the circumference.

[0065] The object side S3 of the second lens L2 is convex at the near optical axis 101, and the ima...

no. 2 example

[0081] refer to image 3 , in the second embodiment, the optical system 10 includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with negative refractive power, and the seventh lens L7 with negative refractive power. Each lens surface type of optical system 10 is as follows:

[0082] The object side S1 of the first lens L1 is convex at the near optical axis 101, the image side S2 is convex at the near optical axis 101; the object side S1 is convex near the circumference, and the image side S2 is convex near the circumference.

[0083] The object side S3 of the second lens L2 is concave at the near optical axis 101, the image side...

no. 3 example

[0096] refer to Figure 5 , in the third embodiment, the optical system 10 includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with a refractive power, the fourth lens L4 with a positive refractive power, the fifth lens L5 with a negative refractive power, the sixth lens L6 with a positive refractive power, and the seventh lens L7 with a negative refractive power. Each lens surface type of optical system 10 is as follows:

[0097] The object side S1 of the first lens L1 is convex at the near optical axis 101, and the image side S2 is concave at the near optical axis 101; the object side S1 is convex near the circumference, and the image side S2 is concave near the circumference.

[0098] The object side S3 of the second lens L2 is convex at the near optical axis 101,...

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Abstract

The invention discloses an optical system, a camera module and electronic equipment. The optical system includes: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; the object-side surface and the image-side surface of the second lens are respectively a convex surface and a concave surface near the circumference, the object-side surface of the third lens is a convex surface near the optical axis, and the image-side surface of the third lens is a concave surface near the circumference; the fourth lens, the fifth lens, the sixth lens and the seventh lens have refractive power; the object side surface of the fifth lens is a concave surface near the circumference; the sixth lens element has an object-side surface being concave in a paraxial region thereof. The object side surface and the image side surface of the seventh lens are respectively a concave surface and a convex surface near the circumference; the optical system satisfies the relationship 0.242 mm <-1 > < (TTL / ImgH) / f < 0.261 mm <-1 >. According to the optical system provided by the embodiment of the invention, good imaging quality can be considered while miniaturization design is realized.

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, various mobile electronic devices equipped with camera lenses (including various portable information terminals such as digital cameras, smart phones, notebook computers, and tablet computers) are rapidly developing and popularizing. Among them, the improvement of the portability of mobile devices has put forward higher requirements for the thickness of the camera device, and the demand for image quality improvement has become an inevitable trend; at present, in order to reduce the thickness of the camera device, a camera system with a low-chip structure can be used. However, the imaging quality will be reduced in this way, which cannot meet the expected demand; therefore, the problems of improving the lightness and maintaining good performance of the camera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18
CPCG02B13/0045
Inventor 党绪文李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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