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Optical system, lens module and electronic equipment

An optical system and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of not conforming to the development trend of miniaturization and integration, too many lenses, and long lens barrels of telephoto lenses.

Pending Publication Date: 2021-07-16
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lens barrel of the telephoto lens is long, which does not conform to the development trend of miniaturization and integration
[0003] In conventional optical systems, too few lenses make it difficult to achieve telephoto characteristics; too many lenses make it difficult to achieve miniaturization

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0058] Please refer to Figure 1a and Figure 1b , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0059] The first lens L1 has a positive refracting power, the object side S1 of the first lens L1 is convex at the near optical axis and near the circumference, and the image side S2 at the near optical axis and near the circumference of the first lens L1 is convex;

[0060] The second lens L2 has a negative refracting power. The object side S3 at the near optical axis of the second lens L2 is concave, the object side S3 near the circumference is convex, and the image side at the near optical axis and near the circumference of the second lens L2. S4 is concave;

[0061] The third lens L3 has a negative refracting force, the object side S5 at the near optical axis of the third lens L3 is concave, the object side S5 near the circumference is convex, and the image side S6 at the near optical axis ...

no. 2 example

[0080] Please refer to Figure 2a and Figure 2b , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0081] The first lens L1 has a positive refractive power, the object side S1 at the near optical axis and near the circumference of the first lens L1 is a convex surface, and the image side S2 at the near optical axis and near the circumference of the first lens L1 is a convex surface;

[0082]The second lens L2 has a negative refracting force, the object side S3 at the near optical axis and near the circumference of the second lens L2 is a convex surface, and the image side S4 at the near optical axis and near the circumference of the second lens L2 is a concave surface;

[0083] The third lens L3 has a positive refractive power, the object side S5 at the near optical axis of the third lens L3 is concave, the object side S5 near the circumference is convex, and the image side at the near optic...

no. 3 example

[0098] Please refer to Figure 3a and Figure 3b , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0099] The first lens L1 has a positive refractive power, the object side S1 at the near optical axis and near the circumference of the first lens L1 is a convex surface, and the image side S2 at the near optical axis and near the circumference of the first lens L1 is a convex surface;

[0100] The second lens L2 has a negative refracting force, the object side S3 at the near optical axis and near the circumference of the second lens L2 is a convex surface, and the image side S4 at the near optical axis and near the circumference of the second lens L2 is a concave surface;

[0101] The third lens L3 has a negative refracting force, the object side S5 at the near optical axis and near the circumference of the third lens L3 is a concave surface, and the image side S6 at the near optical axis and ...

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PUM

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Abstract

The invention provides an optical system, a lens module and electronic equipment. The electronic equipment sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from the object side to the image side in the optical axis direction, wherein the first lens has a positive bending force, the object side surface of the first lens near the optical axis and near the circumference is a convex surface, and the image side surface of the first lens near the optical axis is a convex surface; the second lens has a negative bending force, and the image side surfaces of the second lens , near the optical axis and near the circumference are concave surfaces; and a fifth lens has a negative meandering force. The optical system satisfies the following conditional expressions: f14 / f < = 1.5; and TTL / f < = 1, wherein f14 is the combined focal length of the first lens, the second lens, the third lens and the fourth lens, f is the effective focal length of the optical system, and TTL is the distance from the object side surface of the first lens to the imaging surface of the optical system on the optical axis. Through the arrangement, light is in smooth transition, so that the optical system has the long-focus characteristic, meanwhile, the overall length of the optical system is small, and ultra-thinness is achieved.

Description

technical field [0001] The invention belongs to the technical field of optical imaging, and in particular relates to an optical system, a lens module and electronic equipment. Background technique [0002] With the market's requirements for high imaging quality of cameras, telephoto lenses emerged as the times require. The telephoto lens is characterized by a longer focal length, which is conducive to capturing the details of long-distance objects and achieving clear imaging. However, the lens barrel of the telephoto lens is long, which does not conform to the development trend of miniaturization and integration. [0003] In conventional optical systems, too few lenses make it difficult to achieve telephoto characteristics, and too many lenses make it difficult to achieve miniaturization. Therefore, there is a need to develop an optical system with an appropriate lens layout capable of achieving both telephoto characteristics and miniaturization. Contents of the inventio...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18
Inventor 王妮妮刘彬彬李明邹海荣
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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