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Camera optical lens

An optical lens and lens technology, applied in the field of optical lens, can solve problems such as distribution of focal power, unreasonable setting of lens distance and lens shape, insufficient setting of lens dispersion coefficient, insufficient wide-angle and large aperture of lens, etc., to meet the requirements of large Effect of aperture, good optical performance

Active Publication Date: 2019-09-10
AAC OPTICS (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these lenses already have good optical performance, their focal power allocation, lens spacing and lens shape settings still have certain irrationality, resulting in insufficient wide-angle and large aperture of the lens; in addition, the dispersion coefficient setting of the lens is not sufficient , causing the lens to fail to work on the confocal surface of visible light and infrared

Method used

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  • Camera optical lens
  • Camera optical lens
  • Camera optical lens

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0049] 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: a first lens L1 , a second lens L2 , an aperture S1 , a third lens L3 , a fourth lens L4 and a fifth lens L5 . In this embodiment, an optical element such as a glass plate GF is arranged between the fifth lens L5 and the image plane Si, wherein the glass plate GF can be a glass cover, or an optical filter (filter). In this way, the glass plate GF can also be arranged at other positions.

[0050] In this embodiment, the first lens L1 has negative refractive power, its object side is concave inwardly, and its image side is concave; the second lens L2 has negative refractive power, its object side is convex, and its image side is concave; The third lens L3 has positive refractive power, its object side is convex, and its ima...

no. 2 approach

[0147] 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.

[0148] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0149] 【table 5】

[0150]

[0151] 【Table 6】

[0152]

[0153]

[0154] 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.

[0155] 【Table 7】

[0156]

[0157] 【Table 8】

[0158] Stationary number Stationary position 1 P1R1 1 0.855 P2R1 1 0.545

[0159] In the subsequent Table 21, various parameters in the second embodiment are also listed corresponding to the parameters specified in the conditional ...

no. 3 approach

[0163] 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.

[0164] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0165] 【Table 9】

[0166]

[0167] 【Table 10】

[0168]

[0169]

[0170] 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.

[0171] 【Table 11】

[0172]

[0173] 【Table 12】

[0174] Stationary number Stationary position 1 P1R1 1 0.715 P2R1 1 0.335

[0175] In the subsequent Table 21, various parameters in the third embodiment and the values ​​corresponding to the parameters specified in the condition...

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Abstract

The invention provides a camera optical lens, which comprises the following components in sequence from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens and afifth lens, wherein the first lens has negative refractive power, the second lens has refractive power, the third lens has positive refractive power, the fourth lens has positive refractive power, andthe fifth lens has negative refractive power; the abbe number of the first lens is v1, the abbe number of the second lens is v2, the focal length of the camera optical lens is f, the focal length ofthe first lens is f1, the curvature radius of the object-side surface of the second lens is R3, and the curvature radius of the image-side surface of the second lens is R4, and the following relationships are satisfied: 1.50<=v1 / v2<=3.20; -2.10<=f1 / f<=-1.00; 1.50<=(R3+R4) / (R3-R4)<=35.00. The visible light and the infrared light of the camera optical lens can work in a confocal plane, and the camera optical lens has good optical performance.

Description

[0001] 【Technical field】 [0002] 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. [0003] 【Background technique】 [0004] With the rapid development and popularization of smart phones, the R&D and design of cameras have developed rapidly. In addition, today's electronic products are developing with good functions and thin, light and small appearances. Miniaturized cameras with good imaging quality have become the current market on the mainstream. [0005] In order to obtain better imaging quality, the traditional miniature lenses mounted on mobile phone cameras mostly adopt three-element, four-element or even five-element or six-element lens structures. Although these lenses already have good optical performance, their focal power allocation, lens spacing and lens shape settings still have certain i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045
Inventor 言俊杰孙雯
Owner AAC OPTICS (CHANGZHOU) CO LTD