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Optical system, imaging module and electronic equipment

An optical system and optical axis technology, applied in the field of photography, can solve problems such as insufficient effective focal length and difficulty in telephoto performance

Active Publication Date: 2022-06-24
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current optical system has insufficient effective focal length, and it is difficult to have good telephoto performance

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0091] See figure 1 and figure 2 , figure 1 It is a schematic structural diagram of the optical system 100 in the first embodiment. The optical system 100 sequentially includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and an aperture stop STO from the object side to the image side. A third lens L3 having a negative refractive power, a fourth lens L4 having a positive refractive power, and a fifth lens L5 having a negative refractive power. figure 2 From left to right are graphs of longitudinal spherical aberration, astigmatism, and distortion of the optical system 100 in the first embodiment, wherein the reference wavelength of the astigmatism graph and the distortion graph is 587 nm, and the other embodiments are the same.

[0092] The object side surface S1 of the first lens L1 is a convex surface at the near optical axis 110, and is a convex surface at the circumference;

[0093] The image si...

no. 2 example

[0129] See image 3 and Figure 4 , image 3 It is a schematic structural diagram of the optical system 100 in the second embodiment. The optical system 100 sequentially includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and an aperture stop STO from the object side to the image side. A third lens L3 having a negative refractive power, a fourth lens L4 having a positive refractive power, and a fifth lens L5 having a negative refractive power. Figure 4 From left to right are graphs of longitudinal spherical aberration, astigmatism and distortion of the optical system 100 in the second embodiment.

[0130] The object side surface S1 of the first lens L1 is a convex surface at the near optical axis 110, and is a convex surface at the circumference;

[0131] The image side surface S2 of the first lens L1 is a convex surface at the near optical axis 110, and is a convex surface at the circumference;

...

no. 3 example

[0153] See Figure 5 and Image 6 , Figure 5It is a schematic structural diagram of the optical system 100 in the third embodiment. The optical system 100 sequentially includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with positive refractive power, and an aperture stop STO from the object side to the image side. A third lens L3 having a negative refractive power, a fourth lens L4 having a positive refractive power, and a fifth lens L5 having a negative refractive power. Image 6 From left to right are graphs of longitudinal spherical aberration, astigmatism and distortion of the optical system 100 in the third embodiment.

[0154] The object side surface S1 of the first lens L1 is a convex surface at the near optical axis 110, and is a convex surface at the circumference;

[0155] The image side surface S2 of the first lens L1 is a convex surface at the near optical axis 110 and a concave surface at the circumference;

[0156...

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Abstract

The invention relates to an optical system, an imaging module and electronic equipment. The optical system includes: the first lens with positive refractive power, the object side is convex at the near optical axis, and the image side is convex at the near optical axis; the second lens with refractive power, the object side is convex at the near optical axis The third lens with negative refractive power, the image side is concave at the near optical axis; the fourth lens with positive refractive power, both the object side and the image side are aspherical; the fifth lens with refractive power, the object side and The image sides are all aspherical, and at least one of the object side and the image side has an inflection point; the optical system satisfies the conditional formula: 105.0≤(43 / IMGH)*f≤120.0. The optical system described above can realize telephoto characteristics.

Description

technical field [0001] The invention relates to the field of imaging, in particular to an optical system, an imaging module and an electronic device. Background technique [0002] The human eye has a super high response speed and resolution for imaging objects with limited distances, but it is very difficult to "see clearly" objects at a distance. The optical system with telephoto characteristics has good telephoto performance and can shoot long-distance objects. distance from the subject. Therefore, an optical system with telephoto characteristics is an important means to expand the visual distance of the human eye, and the telephoto optical system is used more and more widely in electronic equipment. However, the current optical system has insufficient effective focal length, so it is difficult to have good telephoto performance. SUMMARY OF THE INVENTION [0003] Based on this, it is necessary to provide an optical system, an imaging module and an electronic device to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/02G02B13/18
CPCG02B13/0045G02B13/02G02B13/18
Inventor 刘彬彬党绪文李明邹海荣
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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