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Camera optical lens

An optical lens and lens technology, applied in the field of optical lens, can solve the problems of unreasonable setting of design requirements, focal power, lens spacing and lens shape, etc., and achieve the effect of excellent optical characteristics and wide angular aberration

Active Publication Date: 2019-10-01
AAC OPTICS SOLUTIONS PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Camera optical lenses on traditional electronic products mostly adopt four-piece, five-piece, six-piece or even seven-piece lens structures. As the pixel area of ​​the photosensitive device continues to shrink and the system’s requirements for imaging quality continue to increase, the five-element lens structure gradually appears in the lens design. Although the common five-element lens already has better optical performance, but its focal power, lens spacing and lens shape settings are still unreasonable to a certain extent, resulting in a lens structure that cannot meet the design requirements of large aperture, ultra-thin, and wide-angle while having good optical performance.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0062] Please also refer to Figure 1 to Figure 4, the present invention provides the imaging optical lens 10 of Embodiment 1. exist figure 1 Among them, the left side is the object side, and the right side is the image side. The imaging optical lens 10 mainly includes five lenses arranged coaxially, and sequentially includes an aperture S1, a first lens L1 with positive refractive power, and a first lens L1 with positive refractive power from the object side to the image side. The second lens L2 with negative refractive power, the third lens L3 with refractive power, the fourth lens L4 with positive refractive power, and the fifth lens L5 with negative refractive power. An aperture S1 is also provided on the object side of the first lens L1, and a glass plate GF is provided between the fifth lens L5 and the image plane Si. The glass plate GF can be a glass cover or an optical filter.

[0063] The axial thickness of the first lens is defined as d1, the optical total length o...

Embodiment approach 2

[0152] 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. The meanings of the symbols in the following list are also the same as those in the first embodiment. Therefore, the same parts will not be repeated here, and only listed below difference.

[0153] Table 5 and Table 6 show the design data of the imaging optical lens 20 according to Embodiment 2 of the present invention.

[0154] 【table 5】

[0155]

[0156] 【Table 6】

[0157]

[0158] 【Table 7】

[0159] Number of inflection points Inflection point position 1 Inflection point position 2 Inflection point position 3 Inflection point position 4 Inflection point position 5 P1R1 0 0 0 0 0 0 P1R2 0 0 0 0 0 0 P2R1 2 0.155 0.525 0 0 0 P2R2 0 0 0 0 0 0 P3R1 1 0.725 0 0 0 0 P3R2 1 0.845 0 0 0 0 P4R1 1 0.505 0 0...

Embodiment approach 3

[0167] 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. The meanings of the symbols in the following list are also the same as those in the first embodiment. Therefore, the same parts will not be repeated here, and only listed below difference.

[0168] Table 9 and Table 10 show the design data of the imaging optical lens 30 according to Embodiment 3 of the present invention.

[0169] 【Table 9】

[0170]

[0171]

[0172] 【Table 10】

[0173]

[0174] Table 11 and Table 12 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 30 .

[0175] 【Table 11】

[0176]

[0177]

[0178] 【Table 12】

[0179] Stationary number Stationary position 1 P1R1 0 0 P1R2 0 0 P2R1 1 0.815 P2R2 1 0.555 P3R1 1 0.955 P3R2 1 1.305 P4R1 1 0.755 P4R2 0 0...

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Abstract

The invention provides a camera optical lens. The camera optical lens orderly comprises a first lens with positive refraction power, a second lens with negative refraction power, a third lens with refraction power, a fourth lens with positive refraction power and a fifth lens with negative refraction power from an object side to an image side, wherein the on-axis thickness of the first lens is d1,the total track length of the camera optical lens is TTL, the abbe number of the first lens is v1, the abbe number of the fifth lens is v5, the curvature semidiameter of the fourth lens object side is R7, and the curvature semidiameter of the fourth lens image side is R8, and the following relation relations are satisfied: da / TTL is not less than 0.20 and not more than 0.40, v1 / v5 is not less than 2.50 and not more than 4.00, (R7+R8) / (R7-R8) is not less than minus1.00 and not more than 1.00. The camera optical lens can satisfy the design requirements of large aperture, wide angle and ultra-thin when the good optical performance is provided, and the first lens is large in thickness, and the structure characteristic can be designed on the lens.

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] With the development of camera technology, camera optical lenses are widely used in various electronic products, such as smart phones, digital cameras and so on. For the convenience of portability, people are increasingly pursuing thinner and lighter electronic products. Therefore, miniaturized camera optical lenses with good imaging quality have become the mainstream of the current market. [0003] Camera optical lenses on traditional electronic products mostly adopt four-piece, five-piece, six-piece or even seven-piece lens structures. As the pixel area of ​​the photosensitive device continues to shrink and the system’s requirements for imaging quality continue to increase, the five-element l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/06
Inventor 言俊杰孙雯
Owner AAC OPTICS SOLUTIONS PTE LTD