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Optical system, image capturing module and electronic device

A technology of optical system and optical axis, which is applied in the field of photography and can solve problems such as image quality degradation

Pending Publication Date: 2022-07-12
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide an optical system, an imaging module and an electronic device aimed at the problem that the current camera lens easily leads to a decrease in imaging quality while achieving wide-angle characteristics.

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

[0095] 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 a diaphragm STO, a first lens L1 with a positive refractive power, a second lens L2 with a negative refractive power, and a lens with a negative refractive power. The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with positive refractive power, the sixth lens L6 with negative refractive power, the seventh lens L7 with negative refractive power, the The eighth lens L8 with positive refractive power and the ninth lens L9 with 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 555 nm, and the other embodiments are the sa...

no. 2 example

[0134] 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 a diaphragm STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with positive refractive power, the sixth lens L6 with negative refractive power, the seventh lens L7 with positive refractive power, the The eighth lens L8 with positive refractive power and the ninth lens L9 with 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.

[0135] The object side S1 of the first lens L1 is convex at the near optical axis 110, and the image side S2 is concave at the near optical axis 110;

[0136] The objec...

no. 3 example

[0158] See Figure 5 and Image 6 , Figure 5 It is a schematic structural diagram of the optical system 100 in the third embodiment. The optical system 100 sequentially includes a diaphragm STO, a first lens L1 with a positive refractive power, a second lens L2 with a negative refractive power, and a lens with a negative refractive power. The third lens L3 with positive refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, the sixth lens L6 with negative refractive power, the seventh lens L7 with negative refractive power, the The eighth lens L8 with positive refractive power and the ninth lens L9 with 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.

[0159] The object side S1 of the first lens L1 is convex at the near optical axis 110, and the image side S2 is concave at the n...

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Abstract

The invention relates to an optical system, an image capturing module and an electronic device. The optical system includes: a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface; the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the fourth lens element with refractive power has a concave image-side surface. A fifth lens element with refractive power having a convex object-side surface; a sixth lens element with refractive power; the object side surface of the seventh lens is a concave surface, and the image side surface of the seventh lens is a convex surface; the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface; the object side surface of the ninth lens is a concave surface, and the image side surface of the ninth lens is a concave surface; the optical system meets the condition that f / tan (HFOV) is larger than or equal to 6.8 mm and smaller than or equal to 7.4 mm. According to the optical system, the wide-angle characteristic and the good imaging quality can be achieved at the same time.

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] With the rapid development of camera technology, the application of camera lenses in smart phones, tablet computers, e-readers and other electronic devices is becoming more and more extensive. In order to improve the market competitiveness of electronic devices, the performance requirements of the industry for camera lenses are also increasing. Come higher. Among them, the size of the field of view of the camera lens is one of the focuses of the industry. The large field of view enables the camera lens to obtain more scene information and improve the user experience of electronic devices. However, the current camera lens, while achieving the wide-angle characteristic, is prone to degrade the image quality, which affects the restoration degree of the image. SUMMARY OF THE INVENTION [0003] Base...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06H04N5/225
CPCG02B13/0015G02B13/0045G02B13/06G03B30/00H04N23/57H04N23/55
Inventor 龙鑫灿李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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