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Optical system, image capturing module and electronic device

A technology of optical system and optical axis, applied in the field of photography, can solve the problem that TOF lens cannot meet the large aperture and other problems

Pending Publication Date: 2022-01-07
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide an optical system, imaging module and electronic equipment for the current TOF lens that is difficult to meet the needs of large apertures.

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

[0078] See figure 1 and figure 2 , figure 1 It is a schematic structural diagram of an optical system in the first embodiment 100, optical system 100 from an object side to an image side, stop the STO, a first lens L1 having a positive refractive power, a second lens L2 having positive refractive power, having a negative refractive power of the third lens L3, 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 for the spherical aberration of the optical system in the first embodiment 100, like the graph showing astigmatism and distortion, are reference wavelength 940nm, the same as the other embodiments.

[0079] The object side surface of the first lens L1 to paraxial S1 110 being convex in a convex circumference;

[0080] The first lens L1 to the image-side surface S2 is a concave surface near the optical axis 110, in the circumference of a convex surface;

[0081] The second object side surface ...

no. 2 example

[0115] See image 3 and Figure 4 , image 3 Is a schematic structural diagram of an optical system of the second embodiment 100, the optical system 100 from an object side to an image side comprises successively stop the STO, a first lens L1 having a positive refractive power, a second lens L2 having positive refractive power, having a negative refractive power of the third lens L3, 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, it is a graph of the longitudinal ball difference of the optical system 100 in the second embodiment in the second embodiment.

[0116] The object side surface of the first lens L1 to paraxial S1 110 being convex in a convex circumference;

[0117] The first lens L1 to the image-side surface S2 is a concave surface near the optical axis 110 at the circumference of the concave;

[0118] The second object side surface S3 of lens L2 in the optical axis 110 near a convex, co...

no. 3 example

[0139] See Figure 5 and Image 6 , Figure 5 Is a schematic structural diagram of an optical system of a third embodiment 100, the optical system 100 from an object side to an image side comprises successively stop the STO, a first lens L1 having a positive refractive power, a second lens L2 having positive refractive power, having a negative refractive power of the third lens L3, 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 is a longitudinal spherical aberration of the optical system 100 according to the third embodiment, astigmatism, and distortion of the graph.

[0140] The object side surface of the first lens L1 to paraxial S1 110 being convex in a convex circumference;

[0141] The first lens L1 to the image-side surface S2 is a concave surface near the optical axis 110, in the circumference of a convex surface;

[0142] The second object side surface S3 of lens L2 in the optical axis 110...

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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 an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region, a second lens element with refractive power having an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region, a third lens element with refractive power, a fourth lens element with positive refractive power having an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region, and a fifth lens element with negative refractive power having an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region. The optical system satisfies the following condition: 25deg< / =HFOV / FNO< / =33deg. The optical system has the characteristics of good imaging quality and large aperture.

Description

Technical field [0001] The present invention relates to the field of imaging, and more particularly to an optical system, camera module and an electronic device. Background technique [0002] With the rapid development time of flight (Time Of Flight, TOF) detection technology, application in electronic devices TOF camera smartphones, tablets, e-readers are increasingly being used, so the industry TOF imaging quality of the lens requirements are also increasing. Wherein the lens F-number TOF has a great impact on image quality, can improve the imaging characteristics of the large aperture lens luminance TOF, TOF while the lens such that in low light conditions it is possible to have a good image quality. However, the current TOF camera is difficult to meet the needs of large aperture. Inventive content [0003] Based on this, it is necessary for the current TOF camera is difficult to meet the needs of large aperture of an optical system, camera module and electronic equipment. ...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045G02B13/006G03B30/00
Inventor 谭怡翔党绪文李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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