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Camera shooting optical lens

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

Active Publication Date: 2020-10-23
CHANGZHOU RAYTECH OPTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the development of technology and the increase of diversified needs of users, as the pixel area of ​​the photosensitive device continues to shrink, and the system’s requirements for imaging quality continue to increase, the nine-element lens structure gradually appears in the lens design. Common Although the nine-piece lens already has good optical performance, its focal power, lens spacing and lens shape settings still have certain irrationality, resulting in a lens structure that cannot meet the requirements of large aperture, large aperture, and lens shape while having good optical performance. Ultra-thin, wide-angle design requirements

Method used

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Experimental program
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no. 1 approach ）

[0033] Referring to the accompanying drawings, the present invention provides a photographic optical lens 10 . figure 1 Shown is the imaging optical lens 10 according to the first embodiment of the present invention, and the imaging optical lens 10 includes nine lenses in total. Specifically, the imaging optical lens 10, from the object side to the image side in sequence: aperture S1, first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens Lens L6, seventh lens L7, eighth lens L8, and ninth lens L9. An optical element such as an optical filter (filter) GF may be disposed between the ninth lens L9 and the image plane Si.

[0034]In this embodiment, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, the fourth lens L4 has negative refractive power, and the fifth lens L5 has positive refractive power , the sixth lens L6 has positive refractive power, ...

no. 2 approach ）

[0168] 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.

[0169] In this embodiment, the fourth lens L4 has positive refractive power.

[0170] In this embodiment, the image side of the sixth lens L6 is convex at the paraxial position.

[0171] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0172] 【table 5】

[0173]

[0174] 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.

[0175] 【Table 6】

[0176]

[0177] 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 th...

no. 3 approach ）

[0186] 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.

[0187] In this embodiment, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the sixth lens L6 has negative refractive power, and the seventh lens L7 has positive refractive power.

[0188] In this embodiment, the object side of the fourth lens L4 is convex at the paraxial position; the object side of the fifth lens L5 is concave at the paraxial position, and the image side of the fifth lens L5 is convex at the paraxial position; the sixth The object side of lens L6 is concave at the paraxial position, the image side of sixth lens L6 is convex at the paraxial position; the object side of seventh lens L7 is convex at the paraxial po...

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Abstract

The invention relates to the field of optical lenses, and discloses a camera shooting optical lens, which comprises nine lenses. The nine lenses are a first lens, a second lens, a third lens, a fourthlens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens in sequence from the object side to the image side. The second lens has negative refractive power. Specifically, thefocal length of the camera shooting optical lens is f, the focal length of the first lens is f1, the on-axis thickness of the second lens is d3, the on-axis distance from the image side surface of thesecond lens to the object side surface of the third lens is d4, and the following relational expressions are satisfied: f1 / f is greater than or equal to 0.80 and less than or equal to 1.80; d3 / d4 isgreater than or equal to 1.50 and less than or equal to 8.00. The camera shooting optical lens provided by the invention has good optical performance and meets the design requirements of large aperture and ultra-thinness at the same time.

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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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B9/64G02B13/04
Inventor 田国兵
Owner CHANGZHOU RAYTECH OPTRONICS CO LTD
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