Thin imaging lens group and electronic equipment

An imaging lens, thin technology, applied in optical components, instruments, optics, etc., can solve the problems of poor imaging quality and low yield rate of three-chip lenses, achieve good correction of aberrations, reduce optical sensitivity, and improve imaging quality Effect

Active Publication Date: 2022-06-07
GUANGDONG XUYE OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a thin imaging lens group and electronic equipment to solve the problem of low yield rate and poor imaging quality of the three-piece lens in the prior art

Method used

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  • Thin imaging lens group and electronic equipment
  • Thin imaging lens group and electronic equipment
  • Thin imaging lens group and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] see Figure 1 to Figure 3 , figure 1 A schematic diagram of a thin imaging lens group according to Embodiment 1 of the present invention is shown, figure 2 From left to right are the astigmatism and distortion curves of a thin imaging lens group according to the first embodiment of the present invention, image 3 It is a spherical aberration curve diagram of a thin imaging lens group according to the first embodiment of the present invention.

[0073] This embodiment provides a thin imaging lens group, which includes a first lens E1 , a second lens E2 and a third lens E3 sequentially arranged from the object side to the image side.

[0074] Specifically, the first lens E1 has a positive refractive power, its object side S1 is convex at the paraxial position, and its image side S2 is concave at the paraxial position; the second lens E2 has a negative refractive power, and its object side S3 is at the paraxial position. The image side S4 is convex at the paraxial posi...

Embodiment 2

[0088] see Figure 4 to Figure 6 , Figure 4 A schematic diagram of a thin imaging lens group according to the second embodiment of the present invention is shown, Figure 5 From left to right are the astigmatism and distortion curves of a thin imaging lens group according to the second embodiment of the present invention, Image 6 It is a spherical aberration curve diagram of a thin imaging lens group according to the second embodiment of the present invention.

[0089] This embodiment provides a thin imaging lens group, which includes a first lens E1 , a second lens E2 and a third lens E3 sequentially arranged from the object side to the image side.

[0090] Specifically, the first lens E1 has positive refractive power, its object side S1 is convex at the paraxial position, and its image side S2 is convex at the paraxial position; the second lens E2 has negative refractive power, and its object side S3 is at the paraxial position. The image side S4 is convex at the paraxi...

Embodiment 3

[0099] see Figure 7 to Figure 9 , Figure 7 A schematic diagram of a thin imaging lens group according to Embodiment 3 of the present invention is shown, Figure 8 From left to right are the astigmatism and distortion curves of a thin imaging lens group according to the third embodiment of the present invention, Figure 9 It is a spherical aberration curve diagram of a thin imaging lens group according to the third embodiment of the present invention.

[0100] This embodiment provides a thin imaging lens group, which includes a first lens E1 , a second lens E2 and a third lens E3 sequentially arranged from the object side to the image side.

[0101] Specifically, the first lens E1 has positive refractive power, its object side S1 is convex at the paraxial position, and its image side S2 is convex at the paraxial position; the second lens E2 has negative refractive power, and its object side S3 is at the paraxial position. The image side S4 is convex at the paraxial positio...

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Abstract

The invention relates to the technical field of optical imaging, and discloses a thin imaging lens group and electronic equipment, and the lens group comprises a first lens which has positive refractive power, and the object side surface of the first lens is a convex surface at a paraxial position; a second lens element with negative refractive power having an object-side surface being concave in a paraxial region and an image-side surface being convex in a paraxial region; a third 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; the thin imaging lens group satisfies the following relational expression: 1.53 < N1; 1.57 < N2; v2 is greater than 25 and less than 30; wherein N1 is the refractive index of the first lens, N2 is the refractive index of the second lens, and V2 is the dispersion coefficient of the second lens. By reasonably matching the surface type and the refractive power of each lens and enabling the lens group to meet specific conditions, the optical sensitivity of the three-piece lens group is reduced, so that the assembly difficulty is reduced, the product yield is improved, meanwhile, the lens group has good aberration correction capability, and the imaging quality is effectively improved.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a thin imaging lens group and an electronic device. Background technique [0002] In order to better meet the market demand for thinness and lightness, the lenses mounted on electronic devices are also developing towards thinness and lightness. However, with the reduction of the number of lenses, it is difficult to balance the imaging effects of the lenses. The existing three-piece lens has high optical sensitivity, is difficult to assemble, and has a low yield rate. At the same time, the correction of aberrations cannot meet expectations, so the image quality is poor. SUMMARY OF THE INVENTION [0003] Aiming at the deficiencies of the prior art, the present invention provides a thin imaging lens group and an electronic device to solve the problems of low yield and poor imaging quality of the three-piece lens in the prior art. [0004] To achieve the above object, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0035G03B30/00
Inventor 林肖怡刘涵邓敏乐袁嘉华
Owner GUANGDONG XUYE OPTOELECTRONICS TECH
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