Image pickup optical lens

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

Active Publication Date: 2019-11-01
AAC OPTICS SOLUTIONS PTE 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 seven-element lens structure gradually appears in the lens design. Common Although the seven-e

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0063] 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 seven 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 a positive refractive power, a second lens L2 with a negative refractive power, and a third lens L2 with a positive refractive power. Lens L3, fourth lens L4 with negative refractive power, fifth lens L5 with refractive power, sixth lens L6 with positive refractive power, and seventh lens L7 with negative refractive power. An optical element such as an optical filter (filter) GF may be disposed between the seventh lens L7 and the image plane Si.

[0064] In this embodiment, the Abbe number of the first lens L1 is defined as v1, and the Abbe number of the second lens L2 is defined as ...

no. 2 approach

[0168] 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.

[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 the 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 inflection point and stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0176] 【Table 7】

[0177]

[0178]

[0179] 【Table 8】

[0180] Stationary number Stationary position 1 P1R1 ...

no. 3 approach

[0185] 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.

[0186] Table 9 and Table 10 show design data of the imaging optical lens 30 according to 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 the stagnation point of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0193] 【Table 11】

[0194]

[0195]

[0196] 【Table 12】

[0197] Stationary number Stationary position 1 ...

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Abstract

The invention discloses an image pickup optical lens. The optical lens comprises, in order from an object side to an image side: a first lens element with positive refractive power, a second lens element with negative refractive power, a third lens element with positive refractive power, and a fourth lens element with positive refractive power, a fifth lens element with positive refractive power,a sixth lens element with positive refractive power, and a seventh lens element with negative refractive power. The curvature radius of the object side surface of the second lens element is R3, the curvature radius of the image side surface of the second lens element is R4, the curvature radius of the object side surface of the sixth lens element is R11, and the curvature radius of the image sidesurface of the sixth lens element is R12, the on-axis thickness of the first lens element is d1, and the on-axis distance between the image side surface of the first lens element and the object side surface of the second lens element is d2, so that the following relational expressions are satisfied: 3.65<=(R3+R4)/(R3*R4)<=4.80, 18.50<=Rd1/d2<=40.00, 200.00<=(R11+R12)/(R11*R12)<=10.00. The image pickup 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 -OxideSemiconductor 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, they have good Miniaturized camera lenses with image quality have become the mainstrea...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06
Inventor 王建明孙雯
Owner AAC OPTICS SOLUTIONS PTE LTD
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