Optical imaging lens

A technology of optical imaging lens and imaging surface, which is applied in optics, optical components, instruments, etc., and can solve the problems of large volume of optical imaging lens

Active Publication Date: 2021-09-24
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an optical imaging lens to solve the problem of large volume of the optical imaging lens in the prior art

Method used

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Examples

Experimental program
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Embodiment 1

[0063] like Figure 1 to Figure 30 As shown, the optical imaging lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens; the first lens has positive refractive power, and the image side of the first lens is convex; the object side of the second lens It is a convex surface, and the image side of the second lens is a concave surface; the fourth lens has a negative refractive power; wherein, the axial distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens is diagonal to the effective pixel area on the imaging surface Half of the line length ImgH meets: TTL / ImgH<1.2; the maximum semi-FOV of the optical imaging lens satisfies: 45°<Semi-FOV<60°.

[0064] By rationally allocating the focal power of each lens, it is beneficial to balance the aberration generated by the optical imaging lens and greatly increase the imaging quality of the optical imaging lens. By limiting TTL / ImgH within a reasonable range...

Embodiment 2

[0083] like Figure 1 to Figure 30 As shown, the optical imaging lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens; the first lens has positive refractive power, and the image side of the first lens is convex; the object side of the second lens It is a convex surface, and the image side of the second lens is concave; the fourth lens has a negative refractive power; wherein, the on-axis distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens, the effective focal length f of the optical imaging lens and The maximum semi-FOV of the optical imaging lens satisfies: 0.7<f*tan(Semi-FOV) / TTL<1. The maximum semi-FOV of the optical imaging lens satisfies: 45°<Semi-FOV<60°.

[0084] By rationally allocating the focal power of each lens, it is beneficial to balance the aberration generated by the optical imaging lens and greatly increase the imaging quality of the optical imaging lens. By limiting f*tan...

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PUM

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Abstract

The invention provides an optical imaging lens. The optical imaging lens comprises: a first lens with positive focal power, wherein the image side surface of the first lens is a convex surface; a second lens, wherein 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; a third lens; a fourth lens, wherein the fourth lens has negative focal power; and a fifth lens, wherein the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and the half ImgH of the diagonal length of an effective pixel area on the imaging surface meet the following condition: TTL / ImgH is less than 1.2, and the maximum half field angle Semi-FOV of the optical imaging lens is greater than 45 degrees and less than 60 degrees. The problem that an optical imaging lens in the prior art is large in size is solved.

Description

technical field [0001] The present invention relates to the technical field of optical imaging equipment, in particular to an optical imaging lens. Background technique [0002] In recent years, smart electronic devices represented by mobile phones have shown diverse demands in the field of photography and videography, and photographic lenses with different functions such as ultra-wide-angle, large aperture, ultra-thin, and small heads have emerged. The rapid update speed also encourages photography The lens is developing in a more complex and superior direction. Among them, wide-angle lenses are widely used in the field of front and rear photography because of their wide field of view. They can capture detailed information of objects at large angles, and are favored by manufacturers and consumers. However, wide-angle lenses are generally relatively large in size. , which is not conducive to the miniaturization of the optical imaging lens. [0003] That is to say, the opti...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/06G03B30/00
Inventor 侯璟张晓彬闻人建科戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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