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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 the problem of large aperture, ultra-thinning, wide-angle, etc., and achieve good optical performance Effect

Active Publication Date: 2020-04-28
AAC OPTICS (CHANGZHOU) 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 eight-piece lens structure gradually appears in the lens design. Common Although the eight-element 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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  • Camera shooting optical lens
  • Camera shooting optical lens
  • Camera shooting optical lens

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0055] Please refer to the accompanying drawings, the present invention provides a camera optical lens 10 . figure 1 Shown is the imaging optical lens 10 of the first embodiment of the present invention, and the imaging optical lens 10 includes eight 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 with positive refractive power, a second lens L2 with negative refractive power, and a third lens L2 with positive refractive power. Lens L3, fourth lens L4 with positive refractive power, fifth lens L5 with negative refractive power, sixth lens L6 with positive refractive power, seventh lens L7 with positive refractive power, and sixth lens L7 with negative refractive power Eight lenses L8. An optical element such as an optical filter (filter) GF may be disposed between the eighth lens L8 and the image plane Si.

[0056] In this embodiment, the focal length of the first lens L1 is defined...

no. 2 approach

[0171] The second embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment. For the structure of the imaging optical lens 20 of the second embodiment, please refer to Figure 5 As shown, only the differences are listed below.

[0172] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0173] 【table 5】

[0174]

[0175]

[0176] 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.

[0177] 【Table 6】

[0178]

[0179]

[0180] 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.

[0181] 【Table 7】

[0182] Number of inflection points Inflection point position 1 Inflection p...

no. 3 approach

[0190] The third embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment. For the structural form of the imaging optical lens 30 of the third embodiment, please refer to Figure 9 As shown, only the differences are listed below.

[0191] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0192] 【Table 9】

[0193]

[0194]

[0195] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0196] 【Table 10】

[0197]

[0198] 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.

[0199] 【Table 11】

[0200] Number of inflection points Inflection point position 1 Inflection point po...

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Abstract

The invention, which relates to the field of optical lenses, discloses a camera shooting optical lens comprising a first lens having positive refractive power, a second lens having negative refractivepower, a third lens having positive refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, a seventh lens having positive refractive power, and an eighth lens having negative refractive power. The lens units are arranged in order from an object side to an image side. The following relational expressions are satisfied: f1 / f is larger than or equal to 1.00 and is less than or equal to 1.50; d13 / d12 is larger than or equal to 2.50 and is less than or equal to 5.00; f3 / f is larger than or equal to 1.00 and is less than or equal to 2.00; and d5 / d4 is larger than or equal to 4.50 and is less than or equal to 7.00. The camera shooting optical lens provided by the invention has good optical performance and 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 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 photocoupled 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 mainstrea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0015G02B13/0045G02B13/06G02B13/18
Inventor 石荣宝
Owner AAC OPTICS (CHANGZHOU) CO LTD
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