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Camera Optical Lens

A technology of optical lens and optical total length, which is applied in the field of optical lens, can solve problems such as large aperture, long focal length, and insufficient ultra-thinning, and achieve good optical performance and satisfy the effect of large aperture

Active Publication Date: 2020-08-25
AAC OPTICS (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a photographic optical lens, aiming at solving the problems of large aperture, long focal length and insufficient ultra-thinning of traditional photographic optical lenses

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach ）

[0035] Please also refer to Figure 1 to Figure 4 , the present invention provides the imaging optical lens 10 of the first embodiment. exist figure 1 Among them, the left side is the object side, and the right side is the image side. The imaging optical lens 10 mainly includes five lenses, which are sequentially from the object side to the image side: the aperture S1, the first lens L1, the second lens L2, the third lens L3, The fourth lens L4 and the fifth lens L5. A glass plate GF is provided between the fifth lens L5 and the image plane Si, and the glass plate GF may be a glass cover or an optical filter.

[0036] In this embodiment, the first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material, and the fifth lens L5 is made of plastic material.

[0037] Here, the focal length of the whole imaging optical lens 10 is defined as f, the focal lengt...

no. 2 approach ）

[0141] Figure 5 It is a schematic structural view of the imaging optical lens 20 in the second embodiment. The second embodiment is basically the same as the first embodiment. The meanings of the symbols in the following list are also the same as those in the first embodiment, so the same parts will not be repeated here. Only the differences are listed below.

[0142] In this embodiment, the image side of the third lens L3 is convex at the paraxial position.

[0143] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0144] 【table 5】

[0145]

[0146] Table 6 shows the aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0147] 【Table 6】

[0148]

[0149] Table 7 and Table 8 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 20 .

[0150] 【Table 7】

[0151] ...

no. 3 approach ）

[0158] Figure 9 It is a schematic structural view of the imaging optical lens 30 in the third embodiment. The third embodiment is basically the same as the first embodiment. The meanings of the symbols in the following list are also the same as those in the first embodiment, so the same parts will not be repeated here. Only the differences are listed below.

[0159] In this embodiment, the image side of the first lens L1 is concave at the paraxial position.

[0160] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0161] 【Table 9】

[0162]

[0163] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0164] 【Table 10】

[0165]

[0166] Table 11 and Table 12 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 30 .

[0167] 【Table 11】

[0168]

[016...

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Abstract

The present invention provides an imaging optical lens, which comprises in sequence from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, and a lens with positive refractive power. The fourth lens and the fifth lens with negative refractive power; the overall focal length of the imaging optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, and the radius of curvature of the object side of the second lens is R3, The radius of curvature of the image side of the second lens is R4, the radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, and the distance from the image side of the fourth lens to the object side of the fifth lens is The on-axis distance is d8, the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied: 0.50≤f1 / f≤0.80; -1.20≤f2 / f≤-0.70; 1.50≤d8 / d9≤3.00; -1.50 ≤R3 / R4≤‑0.60; 1.20≤R7 / R8≤2.00. While the camera optical lens has good optical performance, it also meets the design requirements of large aperture, long focal length and ultra-thinness.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal devices such as smart phones and digital cameras, and imaging devices such as monitors and PC lenses. Background technique [0002] With the development of camera technology, camera optical lenses are widely used in various electronic products, such as smart phones, digital cameras and so on. For the convenience of portability, people are increasingly pursuing thinner and lighter electronic products. Therefore, miniaturized camera optical lenses with good imaging quality have become the mainstream of the current market. [0003] In order to obtain better imaging quality, traditional lenses mounted on mobile phone cameras mostly adopt a three-element or four-element lens structure. However, with the development of technology and the increase of diversified needs of users, as the pixel area of ​​the photosensitive device continue...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045G02B13/18G02B15/145113G02B27/0012G02B9/60G02B13/04G02B13/06
Inventor 石荣宝
Owner AAC OPTICS (CHANGZHOU) CO LTD
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