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Camera optics

An optical lens, optical total length technology, applied in the field of optical lens, can solve the problems of wide-angle, insufficient ultra-thin and so on

Active Publication Date: 2022-07-12
RUISHENG OPTOELECTRONICS TECH SUZHOU 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

[0054] 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, the right side is the image side, the imaging optical lens 10 mainly includes five lenses, 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 flat plate GF is provided between the fifth lens L5 and the image plane Si, and the glass flat plate GF may be a glass cover plate or an optical filter.

[0055] 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; and the fifth lens L5 has a negative refractive power .

[0056]In this embodiment, the first lens L1 is made of plastic material, the second l...

no. 2 approach

[0164] Figure 5 It is a schematic structural diagram of the imaging optical lens 20 in the second embodiment. The second embodiment is basically the same as the first embodiment, and the meanings of the symbols in the following list are also the same as those of the first embodiment, so the same parts will not be repeated here. Only the differences are listed below.

[0165] In this embodiment, the object side surface of the second lens L2 is concave at the paraxial position.

[0166] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0167] 【table 5】

[0168]

[0169]

[0170] Table 6 shows aspherical surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0171] 【Table 6】

[0172]

[0173]

[0174] Table 7 and Table 8 show the design data of the inflection point and the stagnation point of each lens in the imaging op...

no. 3 approach

[0182] Figure 9 It is a schematic structural diagram of the imaging optical lens 30 in the third embodiment. The third embodiment is basically the same as the first embodiment, and the meanings of the symbols in the following list are also the same as those of the first embodiment, so the same parts will not be repeated here. Only the differences are listed below.

[0183] In this embodiment, the object side surface of the second lens L2 is concave at the paraxial position.

[0184] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0185] 【Table 9】

[0186]

[0187] Table 10 shows aspherical surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0188] 【Table 10】

[0189]

[0190] Table 11 and Table 12 show the design data of the inflection point and the stagnation point of each lens in the imaging optical lens 30 .

[019...

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Abstract

The invention provides an imaging optical lens, which includes five lenses in total, and the five lenses sequentially include from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens and a fifth lens; a first lens The focal length of the lens is f1, the focal length of the second lens is f2, 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, the radius of curvature of the object side of the fourth lens is R7, and the image side of the fourth lens is R7. The radius of curvature is R8, the radius of curvature of the object side of the fifth lens is R9, the radius of curvature of the image side of the fifth lens is R10, the axial distance from the image side of the second lens to the object side of the third lens is d4, and the The on-axis distance from the image side to the object side of the fourth lens is d6, and satisfies the following relationship: ‑3.50≤f2 / f1≤‑1.80; 1.00≤(R7+R8) / (R7‑R8)≤1.75; 1.30≤ d6 / d4≤2.00; 5.00≤(R5+R6) / (R5‑R6)≤20.00;‑5.00≤R9 / R10≤‑1.50. The imaging optical lens has good optical performance, and also meets the design requirements of large aperture, wide angle, 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 equipment such as smart phones and digital cameras, as well as imaging devices such as monitors and PC lenses. Background technique [0002] With the development of imaging technology, imaging optical lenses are widely used in various electronic products, such as smart phones, digital cameras and so on. In order to facilitate portability, people are increasingly pursuing thinner and lighter electronic products. Therefore, miniaturized imaging optical lenses with good imaging quality have become the mainstream of the current market. [0003] In order to obtain better image quality, the lenses traditionally mounted on mobile phone cameras mostly adopt a three-piece or four-piece lens structure. However, with the development of technology and the increase of diversified demands of users, the pixel area of ​​the photosensitive devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/18G02B13/06G02B9/60G02B27/0025
Inventor 季勇华孙雯
Owner RUISHENG OPTOELECTRONICS TECH SUZHOU CO LTD
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