Camera shooting optical lens

An optical lens and optical total length technology, applied in the field of optical lenses, can solve the problems of insufficient ultra-thinning and wide-angle lens, insufficient lens shape setting, etc., to achieve good optical performance, correct aberrations, and improve the performance of optical systems. Effect

Active Publication Date: 2020-10-02
AAC OPTICS (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The focal power distribution of the existing structure, lens spacing and lens shape settings are insufficient, resulting in insufficient lens ultra-thinning and wide-angle; and the rotationally symmetrical aspheric surface cannot correct aberrations well

Method used

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

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Experimental program
Comparison scheme
Effect test

no. 1 approach ）

[0049] 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, and the imaging optical lens 10 includes eight lenses. Specifically, the imaging optical lens 10 includes in sequence from the object side to the image side: a first lens L1, a second lens L2, an aperture S1, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens lens L6, seventh lens L7, and eighth lens L8. An optical element such as an optical filter (filter) GF may be disposed between the eighth lens L8 and the image plane Si.

[0050] 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, the fifth lens L5 is made of plastic material, and the sixth lens L6 is made of plastic material. are made of plastic, the ...

no. 2 approach ）

[0173] 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.

[0174] Such as image 3 As shown, in the second embodiment, in the imaging optical lens 20 , the image side of the third lens L3 is convex at the paraxial position.

[0175] 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 seventh lens L7 are free-form surfaces.

[0176] 【Table 4】

[0177]

[0178] Table 5 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0179] 【table 5】

[0180]

[0181] Table 6 shows the freeform surface data in the imaging optical lens 20 of the second embodiment of the present invention:

[0182] 【Table 6】

[0183]

[0184] Figure...

no. 3 approach ）

[0188] 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.

[0189] Such as Figure 5 As shown, in the third embodiment, in the imaging optical lens 30, the second lens L2 has a negative refractive power, the sixth lens L6 has a positive refractive power, and the image side of the third lens L3 is convex at the paraxial position; The object side of the four lenses L4 is concave at the paraxial position; the object side of the fifth lens L5 is convex at the paraxial position; the object side of the sixth lens L6 is convex at the paraxial position, and the image side is convex at the paraxial position; the seventh lens The L7 object side is concave at the paraxial position. The aperture S1 is provided between the first lens L1 and the second lens L2.

[0190] Table 7 and Table 8 show design data of the imaging optical lens 30 according to th...

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Abstract

The invention relates to the field of optical lenses, and discloses a camera shooting optical lens. The camera shooting optical lens comprises eight lenses which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens in sequence from the object side to the image side. At least one of the first to eighth lenses comprises a free-form surface; and the focal length of the camera shooting optical lens is f, the focal length of the fourth lens is f4, the curvature radius of the object side face of the fifth lens is R9, the curvature radius of the image side face of the fifth lens is R10, and the following relational expressions are met: 1.30 <= f4/f <= 5.00, and 0 <= (R9 + R10)/(R9-R10) <= 4.50. The camera shooting optical lenscan have good optical performance while being ultrathin and wide in angle, aberration can be effectively corrected, and the performance of an optical system is further improved.

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. The focal power distribution of the existing structure, lens spacing and lens shape settings are insufficient, resulting in insufficient ultra-thinning and wide-angle lens; and the rotationally symmetrical aspheric surface cannot correct 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 impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/06G02B13/04G02B9/64
Inventor 陈佳孙雯
Owner AAC OPTICS (CHANGZHOU) CO LTD
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