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Camera Optical Lens

A technology of optical lens and optical total length, applied in the field of optical lens, can solve the problems of unreasonable setting of ultra-thin, wide-angle, focal power, lens distance and lens shape, etc.

Active Publication Date: 2020-10-27
AAC OPTICS (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to obtain better imaging quality, and with the development of technology and the increase of diversified needs of users, the pixel area of ​​the photosensitive device is constantly shrinking, and the requirements of the system for imaging quality are constantly improving, the three-piece lens structure is gradually Appearing in lens design, although the common three-piece lens has good optical performance, its focal power, lens spacing and lens shape settings still have certain irrationality, resulting in a lens structure with good optical performance. At the same time, it cannot meet the design requirements of ultra-thin and wide-angle

Method used

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Experimental program
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no. 1 approach ）

[0056] Referring to the accompanying drawings, the present invention provides an imaging optical lens 10 . figure 1 Shown is an imaging optical lens 10 according to a first embodiment of the present invention, and the imaging optical lens 10 includes three lenses. Specifically, the imaging optical lens 10 includes, from the object side to the image side in sequence: an aperture S1, a first lens L1, a second lens L2, and a third lens L3. An optical element such as an optical filter (filter) GF may be disposed between the third lens L3 and the image plane Si.

[0057] In this embodiment, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, and the third lens L3 has positive refractive power.

[0058] In this embodiment, the first lens L1 is made of plastic material, the second lens L2 is made of plastic material, and the third lens L3 is made of plastic material. In other embodiments, each lens can also be made of other materials. ...

no. 2 approach ）

[0134] The second embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those of the first embodiment, and only the differences are listed below. Figure 5 Shown is an imaging optical lens 20 according to a second embodiment of the present invention.

[0135] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0136] 【table 5】

[0137]

[0138] 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.

[0139] 【Table 6】

[0140]

[0141] Table 7 and Table 8 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0142] 【Table 7】

[0143]

[0144] 【Table 8】

[0145]

[0146] Figure 6 , Figure 7 Schematic diagrams of axial aberration...

no. 3 approach ）

[0150] The third embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those of the first embodiment, and only the differences are listed below. Figure 9 Shown is an imaging optical lens 30 according to a third embodiment of the present invention.

[0151] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0152] 【Table 9】

[0153]

[0154] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0155] 【Table 10】

[0156]

[0157] 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 according to the third embodiment of the present invention.

[0158] 【Table 11】

[0159]

[0160] 【Table 12】

[0161]

[0162] Figure 10 , Figure 11 Schematic diagrams of axial aberrati...

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Abstract

The invention relates to the field of optical lenses, and discloses a photographic optical lens comprising three lenses in total. The three lenses include in sequence from the object side to the image side: a first lens with positive refractive power, and a third lens with negative refractive power. Two lenses, a third lens with positive refractive power; wherein, the 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, the focal length of the third lens is f3, and the third lens object The central radius of curvature of the side is R5, the central radius of curvature of the image side of the third lens is R6, the on-axis distance from the image side of the second lens to the object side of the third lens is d4, and the on-axis thickness of the third lens is d5, The refractive index of the second lens is n2, and satisfies the following relationship: 0.65≤f1 / f≤0.85; -0.90≤f2 / f≤-0.60; 1.00≤f3 / f≤1.20; -8.00≤(R5+R6) / (R5‑R6)≤‑2.50; 2.50≤d5 / d4≤4.50; 1.55≤n2≤1.70. The imaging optical lens provided by the invention has good optical performance and at the same time satisfies the design requirements of 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] In recent years, with the rise of smart phones, the demand for miniaturized photographic lenses has been increasing, and the photosensitive devices of general photographic lenses are nothing more than photosensitive coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal -Oxide Semiconductor Sensor, CMOS Sensor), and due to the improvement of semiconductor manufacturing process technology, the pixel size of photosensitive devices has been reduced, and today's electronic products are developing with good functions and thin, light and small appearance. Therefore, it has Miniaturized camera lenses with good imaging quality have become the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0035G02B13/06G02B9/14G02B13/18G02B27/0012
Inventor 谈梦科卞旭琪
Owner AAC OPTICS (CHANGZHOU) CO LTD