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Camera Optical Lens

An optical lens, optical total length technology, 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

Active Publication Date: 2021-12-03
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 Optical Lens
  • Camera Optical Lens
  • Camera Optical Lens

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0053] 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 imaging optical lens 10 includes in sequence from the object side to the image side: a first lens L1, an aperture S1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L4. 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.

[0054] 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.

[0055] In this embodiment, at least one of the first lens L1 to the sixth l...

no. 2 approach

[0151] 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.

[0152] 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.

[0153] 【Table 4】

[0154]

[0155] Table 5 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0156] 【table 5】

[0157]

[0158]

[0159] Table 6 shows free-form surface data in the imaging optical lens 20 of the second embodiment of the present invention.

[0160] 【Table 6】

[0161]

[0162]

[0163] Figure 4 The situation that the RMS spot diameter of the...

no. 3 approach

[0167] 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 5 As shown, only the differences are listed below.

[0168] 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.

[0169] 【Table 7】

[0170]

[0171]

[0172]Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0173] 【Table 8】

[0174]

[0175] Table 9 shows free-form surface data in the imaging optical lens 30 of the third embodiment of the present invention.

[0176] 【Table 9】

[0177]

[0178] 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 photographic optical lens, which sequentially comprises from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and The sixth lens; at least one of the first lens to the sixth lens contains a free-form surface, the total focal length of the imaging optical lens is f, the focal length of the third lens is f3, and the distance between the image side of the first lens and the object side of the second lens is The on-axis distance is d2, and the on-axis distance from the image side of the second lens to the object side of the third lens is d4, satisfying the following relationship: -8.00≤f3 / f≤-3.00; 0.00≤d2 / d4≤4.00. The imaging optical lens provided by the invention has good optical performance and at the same time satisfies the design requirements of large aperture, wide angle and ultrathinness.

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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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0015G02B13/0045G02B13/06
Inventor 孙雯
Owner AAC OPTICS (CHANGZHOU) CO LTD