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Camera shooting optical lens

An optical lens and optical total length technology, applied in the field of optical lenses, can solve the problems of unreasonable setting of optical power, lens spacing and lens shape, and the lens structure cannot meet the optical performance, and achieve the effect of excellent optical characteristics.

Active Publication Date: 2020-04-17
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 four-piece lens structure gradually appears in the lens design. Common Although the four-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 needs of large aperture, large aperture, and good optical performance. Ultra-thin design requirements

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0038] Referring to the accompanying drawings, the present invention provides an imaging optical lens 10 . figure 1 Shown is the imaging optical lens 10 of the first embodiment of the present invention, the imaging optical lens 10 including five 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 , a third lens L3 and a fourth lens L4 . An optical element such as an optical filter (filter) GF may be disposed between the fourth lens L4 and the image plane Si.

[0039] The first lens L1, the second lens L2, the third lens L3, and the fourth lens L4 are all made of plastic.

[0040] Define the focal length of the first lens L1 as f1, the focal length of the imaging optical lens 10 is f, 2.50≤f1 / f≤5.00, which stipulates the ratio of the focal length of the first lens L1 to the total focal length of the system, which can effectively balance the spherical system differen...

no. 2 approach

[0128] 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.

[0129] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0130] 【table 5】

[0131]

[0132]

[0133] 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.

[0134] 【Table 6】

[0135]

[0136] 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.

[0137] 【Table 7】

[0138]

[0139]

[0140] 【Table 8】

[0141] Stationary number Stationary position 1 P1R1 P1R2 1 0.745 P2R1 1 0.515 P2R2 1 0.555 P3R1 P3R2 ...

no. 3 approach

[0146] 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.

[0147] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0148] 【Table 9】

[0149]

[0150]

[0151] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0152] 【Table 10】

[0153]

[0154] 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.

[0155] 【Table 11】

[0156] Number of inflection points Inflection point position 1 Inflection point position 2 Inflection point position 3 P1R1 1 1.045 P1R2 1 0.365 P2R1 1 0.425 ...

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Abstract

The invention relates to the field of optical lenses, and discloses a camera shooting optical lens, which sequentially comprises a first lens with positive refractive power, a second lens with positive refractive power, a third lens with positive refractive power and a fourth lens with negative refractive power from an object side to an image side, and the following relational expressions are satisfied: 2.50 <= f1 / f <= 5.00; -10.00 <= (R3 + R4) / (R3-R4) < =-3.00; 0.70 <= f3 / f <= 1.00; 3.00 <= d1 / d2 <= 8.00; and 8.00 <= d5 / d6 <= 15.00. The camera shooting optical lens can meet the design requirements of large aperture, wide angle and ultrathin while obtaining high imaging performance.

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 mainstream in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/004G02B13/06G02B13/18
Inventor 谈梦科
Owner AAC OPTICS (CHANGZHOU) CO LTD
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