Camera optical lens

An optical lens and lens technology, which is applied in the field of optical lenses, can solve the problems that the lens structure cannot meet the optical performance, focal power, lens spacing and lens shape setting unreasonableness, so as to improve the imaging quality, good optical performance, meet The effect of large aperture

Active Publication Date: 2019-04-12
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 seven-element lens structure gradually appears in the lens design. Common Although the seven-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 needs of large aperture, large aperture, and high optical performance. Ultra-thin design requirements

Method used

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  • Camera optical lens
  • Camera optical lens
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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 seven 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 and seventh lens L7. In this embodiment, preferably, an optical element such as a glass plate GF is arranged between the seventh lens L7 and the image plane Si, wherein the glass plate GF can be a glass cover, or an optical filter (filter). In other possible implementation manners, the glass plate GF can also be arranged at other positions.

[0037] In this embodiment, the first lens L1 has a positive refractive power, its object side is convex outward, and its image side is concave; the secon...

no. 2 approach

[0129] Figure 5 It is a schematic structural view of the imaging optical lens 20 in the second embodiment. The second embodiment is basically the same as the first embodiment, and the symbols have the same meanings as the first embodiment. Only the differences are listed below.

[0130] Table 5 and Table 6 show the design data of the camera 20 according to the second embodiment of the present invention.

[0131] 【table 5】

[0132]

[0133]

[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 of the embodiment of the present invention.

[0137] 【Table 7】

[0138]

[0139]

[0140] 【Table 8】

[0141]

Stationary number

Stationary position 1

P1R1

P1R2

1

1.565

P2R1

P2R2

P3R1

1

0.905

P3R2

1

0.675

P4R1

1

1.535

P4R2

P5R1

...

no. 3 approach

[0146] Figure 9 It is a schematic structural view of the imaging optical lens 30 in the third embodiment. The third embodiment is basically the same as the first embodiment, and the symbols have the same meanings as the first embodiment. 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] 【Table 10】

[0151]

[0152] Table 11 and Table 12 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 30 of the embodiment of the present invention.

[0153] 【Table 11】

[0154]

Number of inflection points

Inflection point position 1

Inflection point position 2

Inflection point position 3

Inflection point position 4

P1R1

1

1.415

P1R2

1

0.745

P2R1

2

0.625

0.785

P2R2...

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PUM

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Abstract

The invention relates to the field of optical lenses, and discloses a camera optical lens. The camera optical lens sequentially comprises, form the object side to the image side, a diaphragm, a firstlens with positive refraction force, a second lens with negative refraction force, a third lens with positive refraction force, a fourth lens with negative refraction force, a fifth lens with negativerefraction force, a sixth lens with positive refraction force, and a seventh lens with negative refraction force. The focal distance of the first lens is f1, the focal distance of the second lens isf2, the abbe number of the first lens is v1, and the abbe number of the second number is v2, wherein v1 / v2 is no less than 3.00 and no more than 4.20, and f2 / f1 is no less than -21.00 and no more than-5.00. The camera optical lens has good optical performance and can meet design requirements of a large diaphragm and being ultrathin.

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, it has good Miniaturized camera lenses with image quality have become the mainstream in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/06G02B13/18G02B9/64G02B27/0012
Inventor 赵青言俊杰
Owner AAC OPTICS (CHANGZHOU) CO LTD
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