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Camera shooting optical lens

A technology of optical lens and optical total length, applied in the field of optical lens, can solve the problem of inability to correct off-axis aberration, and achieve the effect of good optical performance, high resolution and good imaging quality

Active Publication Date: 2020-05-08
AAC OPTICS (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, rotationally symmetrical aspheric surfaces are mostly used. This type of aspheric surface only has sufficient degrees of freedom in the meridional plane, and cannot correct off-axis aberrations well.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0031] 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, 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: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5. An optical element such as an optical filter (filter) GF may be disposed between the fifth lens L5 and the image plane Si.

[0032] 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 positive refractive power, and the fifth lens L5 has negative refractive power.

[0033] The first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic m...

no. 2 approach

[0119] 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.

[0120] Table 4 and Table 5 show design data of the imaging optical lens 20 according to the second embodiment of the present invention. Wherein, the object side and the image side of the fifth lens L5 are free-form surfaces.

[0121] 【Table 4】

[0122]

[0123] Table 5 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0124] 【table 5】

[0125]

[0126] Table 6 shows free-form surface data in the imaging optical lens 20 of the second embodiment of the present invention.

[0127] 【Table 6】

[0128]

[0129]

[0130] Figure 4 The situation that the RMS spot diameter of the imaging optical lens 20 of the second embodiment is in the first quadrant is shown, according to Figure 4 It ...

no. 3 approach

[0134] 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.

[0135] Table 7 and Table 8 show design data of the imaging optical lens 30 according to the third embodiment of the present invention. Wherein, the object side and the image side of the fourth lens L4 are free-form surfaces.

[0136] 【Table 7】

[0137]

[0138] Table 8 shows the aspheric surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0139] 【Table 8】

[0140]

[0141] Table 9 shows free-form surface data in the imaging optical lens 30 of the third embodiment of the present invention.

[0142] 【Table 9】

[0143]

[0144]

[0145] Figure 6 The situation that the RMS spot diameter of the imaging optical lens 30 of the third embodiment is in the first quadrant is shown, according to Figure 6 It ...

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PUM

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Abstract

The invention relates to the field of optical lenses, and discloses a camera shooting optical lens, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side, at least one of the first lens to the fifth lens comprises a free-form surface, the focal length of the camera shooting optical lens is f, the focal length ofthe first lens is f1, the focal length of the third lens is f3, the focal length of the fourth lens is f4, and the following relational expressions are met: 0.50<=f4 / f<= 1.20; -8.00<=f3 / f1<=-1.00. Thecamera shooting optical lens provided by the invention has good optical performance and meets the design requirements of high resolution, wide angle and good imaging quality.

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 imaging lenses, people have higher and higher requirements for lens imaging, and the "night scene photography" and "background blur" of lenses have also become important indicators for measuring lens imaging standards. At present, rotationally symmetrical aspheric surfaces are mostly used. This type of aspheric surface only has sufficient degrees of freedom in the meridian plane, and cannot correct off-axis aberrations well. Freeform surface is a non-rotationally symmetrical surface type, which can better balance aberrations and improve imaging quality, and the processing of freeform surfaces has gradually matured. With the improvement of lens imaging requirements, it is ver...

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 陈佳孙雯
Owner AAC OPTICS (CHANGZHOU) CO LTD