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Camera Optical Lens

An optical lens and optical total length technology, applied in the field of optical lenses, can solve the problems of inability to correct off-axis aberrations, ultra-thin lenses and long focal lengths, and insufficient

Active Publication Date: 2020-10-30
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.
In addition, the focal power distribution of the existing structure, lens spacing and lens shape settings are insufficient, resulting in insufficient lens ultra-thinning and long focal length

Method used

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  • Camera Optical Lens
  • Camera Optical Lens
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ）

[0027] 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.

[0028] In this embodiment, 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, and the fifth lens L5 is made of plastic material. In other embodiments, each lens can also be made of other materials.

[0029] In this embodiment, at least one of the first lens L1...

no. 2 approach ）

[0127] 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.

[0128] image 3 Shown is the imaging optical lens 20 of the second embodiment of the present invention, and Table 4 and Table 5 show the design data of the imaging optical lens 20 of the second embodiment of the present invention. Wherein, the object side and the image side of the fifth lens L5 are free-form surfaces.

[0129] 【Table 4】

[0130]

[0131] Table 5 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0132] 【table 5】

[0133]

[0134] Table 6 shows free-form surface data in the imaging optical lens 20 of the second embodiment of the present invention.

[0135] 【Table 6】

[0136]

[0137] Figure 4 The situation that the RMS spot diameter of the imaging optical lens 20 of ...

no. 3 approach ）

[0141] 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.

[0142] Figure 5 Shown is the imaging optical lens 30 of the third embodiment of the present invention, and Table 7 and Table 8 show the design data of the imaging optical lens 30 of the third embodiment of the present invention. Wherein, the object side and the image side of the second lens L2 are free-form surfaces.

[0143] 【Table 7】

[0144]

[0145] 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.

[0146] 【Table 8】

[0147]

[0148] Table 9 shows free-form surface data in the imaging optical lens 30 of the third embodiment of the present invention.

[0149] 【Table 9】

[0150]

[0151] Figure 6 The situation that the RMS spot diameter of the imaging optical lens 30 of...

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Abstract

The invention relates to the field of optical lenses, and discloses a photographic optical lens. The photographic optical lens comprises five lenses in total. The five lenses are sequentially arranged from the object side to the image side: the first lens with positive refractive power, and the first lens with negative refractive power. The second lens with positive refractive power, the third lens with positive refractive power, the fourth lens with negative refractive power, and the fifth lens; wherein, at least one of the first lens to the fifth lens contains a free-form surface, and the object side of the fourth lens The central curvature radius of the fifth lens is R7, and the central curvature radius of the image side of the fifth lens is R10, and the following relational expressions are satisfied: 0≤R7; R10≤0. The imaging optical lens provided by the invention has good optical performance and at the same time satisfies the design requirements of ultrathinness and long focal length.

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. Moreover, the focal power distribution of the existing structure, lens spacing and lens shape settings are insufficient, resulting in insufficient lens ultra-thinning and long focal length. Freeform surface is a non-rotationally symmetrical surface type,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G02B9/60G02B27/0012G02B9/34
Inventor 孙雯陈佳
Owner AAC OPTICS (CHANGZHOU) CO LTD