Camera shooting 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, and cannot meet the problems of large aperture, ultra-thin, wide-angle, etc., and achieve excellent optical characteristics Effect

Active Publication Date: 2020-04-24
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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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0036] 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, and the imaging optical lens 10 includes eight lenses. Specifically, the photographing optical lens 10 includes in sequence from the object side to the image side: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens lens L6, seventh lens L7, and eighth lens L8. An optical element such as an optical filter (filter) GF may be disposed between the eighth lens L8 and the image plane Si.

[0037] 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, the fifth lens L5 has positive refractive power, and the sixth lens L6 has Negative refractive power, seventh lens L7 has positiv...

no. 2 approach

[0152] 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.

[0153] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0154] 【table 5】

[0155]

[0156] 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.

[0157] 【Table 6】

[0158]

[0159] 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.

[0160] 【Table 7】

[0161] Number of inflection points Inflection point position 1 Inflection point position 2 Inflection point position 3 P1R1 0 P1R2 0 P2R1 2 1.115 1.355 P2R2 2 1.1...

no. 3 approach

[0168] 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.

[0169] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0170] 【Table 9】

[0171]

[0172] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0173] 【Table 10】

[0174]

[0175] 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.

[0176] 【Table 11】

[0177] Number of inflection points Inflection point position 1 Inflection point position 2 Inflection point position 3 P1R1 0 P1R2 1 1.485 P2R1 0 P2R2 0 ...

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Abstract

The invention relates to the field of optical lenses, and discloses a camera shooting optical lens. The camera shooting optical lens sequentially comprises a first lens with positive refractive power,a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, a sixth lens withnegative refractive power, a seventh lens with positive refractive power and an eighth lens with negative refractive power from an object side to an image side; and the following relational expressions are satisfied:-8.00<=f3 / f<=-3.50; 7.00<=(R3+R4) / (R3-R4)<=20.00; 3.00<=d7 / d8<=8.00; 5.00<= (R11+R12) / (R11-R12)<=20.00. 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 -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 mainstream in...

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 陈佳
Owner AAC OPTICS (CHANGZHOU) CO LTD
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