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Camera optics

A technology of optical lens and optical total length, which is applied in the field of optical lens, can solve the problems of insufficient wide-angle and ultra-thin, achieve good optical performance, meet wide-angle and ultra-thin, and meet the design requirements

Active Publication Date: 2020-07-10
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 insufficient wide-angle and ultra-thinning of traditional photographic optical lenses

Method used

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Experimental program
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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, and from the object side to the image side are 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 has a positive refractive power; the second lens L2 has a negative refractive power; the third lens L3 has a negative refractive power; the fourth lens L4 has a positive refractive power; the fifth lens L5 has a negative refractive power .

[0037] In this embodiment, the first lens L1 is made of plastic material, the second lens L2 is m...

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

[0143] 【table 5】

[0144]

[0145] 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.

[0146] 【Table 6】

[0147]

[0148] Table 7 and Table 8 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 20 .

[0149] 【Table 7】

[0150]

[0151] 【Table 8】

[0152]

[0153] In addition, in the subsequent Table 13, various parameters ...

no. 3 approach ）

[0157] 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.

[0158] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0159] 【Table 9】

[0160]

[0161] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0162] 【Table 10】

[0163]

[0164] Table 11 and Table 12 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 30 .

[0165] 【Table 11】

[0166]

[0167] 【Table 12】

[0168]

[0169] In addition, in the subsequent Table 13, various parameters in the ...

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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 negative refractive power, The fourth lens and the fifth lens with negative refractive power; wherein, the focal length of the imaging optical lens as a whole is f, the focal length of the first lens is f1, the focal length of the third lens is f3, and the radius of curvature of the object side surface of the second lens is 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 third lens is R5, the radius of curvature of the image side of the third lens is R6, and the axial thickness of the third lens is d5. The axial thickness of the four lenses is d7 and satisfies the following relationship: 0.75≤f1 / f≤0.95; -4.50≤f3 / f≤-3.00; 2.00≤(R5+R6) / (R5-R6)≤8.00; 3.00 ≤d7 / d5≤5.00; ‑12.00≤R3 / R4≤‑2.50. The camera optical lens not only has good optical performance, but also meets the design requirements of large aperture, wide angle and ultra-thin.

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): G02B13/00G02B13/06G02B13/18
CPCG02B13/0015G02B13/0045G02B13/06G02B9/60
Inventor 李红叶
Owner AAC OPTICS (CHANGZHOU) CO LTD
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