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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 the problem of taking images with a large viewing angle range

Active Publication Date: 2021-07-20
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, imaging module and electronic equipment for the problem that the current optical system is difficult to capture images in a large viewing angle range.

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

[0092] See figure 1 and figure 2 , figure 1 It is a structural schematic diagram of the optical system 100 in the first embodiment. The optical system 100 includes a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, and a lens L2 with positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with positive refractive power, and the seventh lens L7 with negative refractive power. figure 2 From left to right are the graphs of the longitudinal spherical aberration, astigmatism and distortion of the optical system 100 in the first embodiment, where the reference wavelength of the astigmatism graph and the distortion graph is 587.5618nm, and other embodiments are the same.

[0093] The object side S1 of the first lens L1 is concave at the near optical axis 110 and convex at the...

no. 2 example

[0135] 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 includes a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, and a lens L2 with positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with positive refractive power, and the seventh lens L7 with negative refractive power. Figure 4 From left to right are the graphs of longitudinal spherical aberration, astigmatism and distortion of the optical system 100 in the second embodiment.

[0136] The object side S1 of the first lens L1 is concave at the near optical axis 110 and convex at the circumference;

[0137] The image side S2 of the first lens L1 is concave at the near optical axis 110 and concave at the circumfere...

no. 3 example

[0163] See Figure 5 and Figure 6 , Figure 5 It is a structural schematic diagram of the optical system 100 in the third embodiment. The optical system 100 includes a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, and a lens L2 with positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with positive refractive power, and the seventh lens L7 with negative refractive power. Figure 6 From left to right are the graphs of longitudinal spherical aberration, astigmatism and distortion of the optical system 100 in the third embodiment.

[0164] The object side S1 of the first lens L1 is concave at the near optical axis 110 and convex at the circumference;

[0165] The image side S2 of the first lens L1 is convex at the near optical axis 110 and concave at the circumferen...

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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 negative refractive power, wherein an object-side surface of the first lens is concave in a paraxial region thereof; a second lens with refractive power , wherein an object-side surface of the second lens is convex in a paraxial region, and an image-side surface of the second lens is concave in a paraxial region; a third lens with positive refractive power, wherein an object-side surface of the third lens is convex in a paraxial region; a fourth lens with positive refractive power, wherein an object-side surface of the fourth lens is convex in a paraxial region, and an image-side surface of the fourth lens is convex in a paraxial region; a fifth lens with negative refractive power, wherein an object-side surface of the fifth lens is concave in a paraxial region thereof, and an image-side surface of the fifth lens is concave in a paraxial region; a sixth lens with positive refractive power, wherein an image-side surface of the sixth lens is convex in a paraxial region; and a seventh lens with negative refractive power. The optical system satisfies that FOV is greater than or equal to 120 degrees and less than or equal to 130 degrees. The optical system has an ultra-wide angle characteristic, and can acquire more scene contents to enrich imaging information of the optical system, thereby improving user experience.

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] With the development of camera technology, more and more electronic devices such as smartphones, tablet computers, and notebook computers are equipped with camera lenses to realize the camera function. Users also have higher and higher requirements for the camera function of electronic equipment. While requiring good imaging quality of the camera lens, the camera lens is also required to be able to obtain more scene content to enrich imaging information and improve user experience. However, it is difficult for the optical system in the current camera lens to capture images in a large viewing angle range. Contents of the invention [0003] Based on this, it is necessary to provide an optical system, an imaging module and an electronic device for the problem that the current optical system is diff...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0015G02B13/0045G02B13/06
Inventor 谭怡翔李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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