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Camera shooting optical lens

A technology of optical lens and total optical length, applied in the field of optical lens, can solve the problems of unreasonable setting of optical power, lens spacing and lens shape, unable to meet large aperture, ultra-thinning and so on

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

AI Technical Summary

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 design requirements

Method used

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Experimental program
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no. 1 approach ）

[0033] With reference to the drawings, the present invention provides an imaging optical lens 10. figure 1 Shown is the imaging optical lens 10 according to the first embodiment of the present invention. The imaging optical lens 10 includes nine lenses in total. Specifically, the imaging optical lens 10, in order from the object side to the image side, is: aperture S1, first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens. Lens L6, seventh lens L7, eighth lens L8, and ninth lens L9. Optical elements such as an optical filter GF may be provided 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 positive refractive power, the fourth lens L4 has negative refractive power, and the fifth lens L5 has positive refractive power. The sixth lens L6 has negative refractive power, the seventh lens L7 has po...

no. 2 approach ）

[0167] Figure 5 It is a schematic diagram of the structure of the imaging optical lens 20 according to the second embodiment of the present invention. The second embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.

[0168] In this embodiment, the seventh lens L7 has a negative refractive power.

[0169] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0170] 【table 5】

[0171]

[0172] Table 6 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0173] 【Table 6】

[0174]

[0175] Table 7 and Table 8 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 20 of the second embodiment of the present invention.

[0176] 【Table 7】

[0177]

[0178] 【Table 8】 ...

no. 3 approach ）

[0184] Picture 9 It is a schematic diagram of the structure of the imaging optical lens 30 of the third embodiment of the present invention. The third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.

[0185] In this embodiment, the object side surface of the seventh lens L7 is concave at the paraxial position, the object side surface of the ninth lens L9 is convex at the paraxial position, and the seventh lens L7 has negative refractive power.

[0186] Table 9 and Table 10 show design data of the imaging optical lens 30 of the third embodiment of the present invention.

[0187] 【Table 9】

[0188]

[0189] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0190] 【Table 10】

[0191]

[0192] Table 11 and Table 12 show the design data of the inflection point and stagnation poi...

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Abstract

The invention relates to the field of optical lenses, and disclosed a camera shooting optical lens. The camera shooting optical lens includes nine lenses in total, and the nine lenses are, in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens, wherein the second lens hasnegative refractive power; specifically, the focal length of the camera shooting optical lens is f, the focal length of the first lens is f1, the on-axis thickness of the sixth lens is d11, the on-axis distance from the image side surface of the sixth lens to the object side surface of the seventh lens is d12, and the following relational expressions are satisfied: f1 / f is greater than or equal to2.00 and smaller than or equal to 5.00; d11 / d12 is greater than or equal to 2.00 and smaller than or equal to 9.00. 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 present invention relates to the field of optical lenses, and 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 increased. The photosensitive devices of general photographic lenses are nothing more than Charge Coupled Device (CCD) or Complementary Metal Oxide Semiconductor Devices (Complementary Metal -Oxide Semiconductor Sensor, CMOS Sensor), and due to the advancement of semiconductor manufacturing process technology, the pixel size of photosensitive devices has been reduced. In addition, today’s electronic products are developing trends with good functions, light, thin and short shapes. Therefore, they have The miniaturized camera lens with good image quality has become the mainstream in the current m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G02B9/64G02B13/06
Inventor 孟杰
Owner CHANGZHOU RAYTECH OPTRONICS CO LTD
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