Optical system, image capturing module and electronic device

An optical system and optical axis technology, applied in the field of photography, can solve the problem of easy collision of lenses with each other

Pending Publication Date: 2020-10-02
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, imaging module and electronic equipment for the problem that multiple lenses are easy to collide with each other during the assembly process.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0077] See figure 1 and figure 2 , figure 1 It is a schematic diagram of the optical system 100 in the first embodiment. The optical system 100 includes a first lens L1 with positive refractive power, an aperture STO, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power from the object side to the image side. A third lens L3 with a refractive power, a fourth lens L4 with a positive refractive power, and a fifth lens L5 with a negative refractive power. figure 2 From left to right are the graphs of 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 587.5618 nm, and other embodiments are the same.

[0078] The object side S1 of the first lens L1 is convex at the paraxial position and convex at the circumference;

[0079] The image side S2 of the first lens L1 is concave at the paraxial position and c...

no. 2 example

[0112] See image 3 and Figure 4 , image 3 It is a schematic diagram of the optical system 100 in the second embodiment. The optical system 100 includes a first lens L1 with positive refractive power, an aperture STO, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power from the object side to the image side. A third lens L3 with a refractive power, a fourth lens L4 with a positive refractive power, and a fifth lens L5 with a negative refractive power. Figure 4 From left to right are the graphs of spherical aberration, astigmatism and distortion of the optical system 100 in the second embodiment.

[0113] The object side S1 of the first lens L1 is convex at the paraxial position and convex at the circumference;

[0114] The image side S2 of the first lens L1 is concave at the paraxial position and concave at the circumference;

[0115] The object side surface S3 of the second lens L2 is concave at the paraxial position and...

no. 3 example

[0135] See Figure 5 and Figure 6 , Figure 5 It is a schematic diagram of the optical system 100 in the third embodiment. The optical system 100 includes the first lens L1 with positive refractive power, the diaphragm STO, the second lens L2 with negative refractive power, and the second lens L2 with positive refractive power from the object side to the image side. A third lens L3 with a refractive power, a fourth lens L4 with a positive refractive power, and a fifth lens L5 with a negative refractive power. Figure 6 From left to right are the graphs of spherical aberration, astigmatism and distortion of the optical system 100 in the third embodiment.

[0136] The object side S1 of the first lens L1 is convex at the paraxial position and convex at the circumference;

[0137] The image side S2 of the first lens L1 is concave at the paraxial position and concave at the circumference;

[0138] The object side surface S3 of the second lens L2 is concave at the paraxial posi...

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Abstract

The invention relates to an optical system, an image capturing module and an electronic device. The optical system includes, in order from an object side to an image side: a first lens with positive refractive power; a second lens with negative refractive power; a third lens with refractive power; a fourth lens with positive refractive power, wherein both the object-side surface and the image-sidesurface are aspheric, and at least one of the object-side surface and the image-side surface has an inflection point; and a fifth lens with negative refractive power. The optical system satisfies thefollowing conditional expressions: 0.5 <= ET8 / CT8 <= 1.2, wherein RT8 is the edge thickness of an air lens composed of the image-side surface of the fourth lens and the object-side surface of the fifth lens, and CT8 is the distance between the image-side surface of the fourth lens and the object-side surface of the fifth lens on the optical axis. According to the optical system, the fourth lens and the fifth lens are not easy to collide with each other in the assembling process, and the assembling yield of the optical system is improved.

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] In the field of imaging, it is necessary to form lenses by injection molding, and by controlling the relative positions of the multiple lenses, multiple lenses and lens barrels are assembled to form a photographic lens. [0003] However, in the process of realizing the present invention, the inventors have found that the traditional technology has at least the following problems: during the assembly process of the camera lens, multiple lenses are likely to collide with each other, resulting in damage to the lens during the assembly process and reducing the assembly of the camera lens. Yield, which in turn leads to an increase in the manufacturing cost of the camera lens. Contents of the invention [0004] Based on this, it is necessary to provide an optical system, an imaging module and an elect...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18
Inventor 邹金华李明张金巨
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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