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Camera shooting optical lens

A technology of optical lens and optical total length, which is applied in the field of optical lens, can solve problems such as inability to correct off-axis aberrations, and achieve good optical performance

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

[0058] Please refer to the accompanying drawings, the present invention provides a camera 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 six lenses. Specifically, the photographing optical lens 10 includes in sequence from the object side to the image side: a first lens L1, a diaphragm S1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens. Lens L6. An optical element such as an optical filter (filter) GF may be disposed between the sixth lens L6 and the image plane Si.

[0059]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 material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of plastic material, and the sixth lens L6 is made of plastic material.

[0060] In this embodiment, at least one of the first lens L1 to the sixth...

no. 2 approach

[0155] The second embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment. For the structure of the imaging optical lens 20 of the second embodiment, please refer to image 3 As shown, only the differences are listed below.

[0156] 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 third lens are free-form surfaces.

[0157] 【Table 4】

[0158]

[0159] Table 5 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0160] 【table 5】

[0161]

[0162] Table 6 shows free-form surface data in the imaging optical lens 20 of the second embodiment of the present invention.

[0163] 【Table 6】

[0164]

[0165]

[0166] Figure 4 The situation that the RMS spot diameter of the imaging opt...

no. 3 approach

[0170] The third embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment. For the structural form of the imaging optical lens 30 of the third embodiment, please refer to Figure 5As shown, only the differences are listed below.

[0171] 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 first lens are free-form surfaces.

[0172] 【Table 7】

[0173]

[0174] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0175] 【Table 8】

[0176]

[0177]

[0178] Table 9 shows free-form surface data in the imaging optical lens 30 of the third embodiment of the present invention.

[0179] 【Table 9】

[0180]

[0181] Figure 6 The situation that the RMS spot diameter of the imaging optical...

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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, a fifth lensand a sixth lens from an object side to an image side, and at least one of the first to sixth lenses includes a free-form surface. The focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the curvature radius of the image side surface of the first lens is R2, and the following relational expressions are satisfied: 0.00 mm<=f1; 0.00 mm<=f2; f3<=0.00 mm; f4<=0.00 mm; f5>=0.00 mm; R2<=0.00 mm. 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] 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...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0015G02B13/0045G02B13/06G02B13/18
Inventor 孙雯
Owner AAC OPTICS (CHANGZHOU) CO LTD