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Optical lens and imaging device

An optical lens and lens technology, applied in the field of optical lenses, can solve the problems of complex lens structure, difficult to eliminate the influence of ghost images, low product yield, etc., and achieve the effects of high imaging quality, improved camera experience, and high-definition imaging effects.

Active Publication Date: 2020-05-22
JIANGXI LIANYI OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, as people’s requirements for image quality continue to increase, on the one hand, the structure of the lens will be correspondingly complicated, resulting in increased processing difficulty and low product yield; on the other hand, the impact of ambient light on image quality will also increase. Increased, which makes the lens while ensuring the imaging quality, the yield rate of the product is low and it is difficult to eliminate the influence of ghost images

Method used

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  • Optical lens and imaging device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0083] Please refer to figure 2 , which is a schematic structural view of the optical lens 100 provided by the first embodiment of the present invention, the optical lens 100 includes a stop ST, a first lens L1, a second lens L2, a third lens Lens L3, fourth lens L4, fifth lens L5 and sixth lens L6, and filter G.

[0084] The first lens L1 has positive refractive power, the object side S1 of the first lens is a convex surface, and the image side S2 of the first lens is a concave surface;

[0085] The second lens L2 has a negative refractive power, and the image side S4 of the second lens is concave;

[0086] The third lens L3 has a positive refractive power, and both the object side S5 of the third lens and the image side S6 of the third lens are convex and have no inflection points;

[0087] The fourth lens L4 has positive refractive power, the object side S7 of the fourth lens is concave, and the image side S8 of the fourth lens is convex at the near optical axis;

[008...

no. 2 example

[0099] Such as Image 6 As shown, it is a schematic structural diagram of the optical lens 200 provided by this embodiment. The optical lens 200 of this embodiment is substantially the same as that of the above-mentioned first embodiment, and the difference mainly lies in different design parameters.

[0100] Specifically, the design parameters of the optical lens 200 provided in this embodiment are shown in Table 3:

[0101] table 3

[0102]

[0103] In this embodiment, the aspheric parameters of each lens in the optical lens 200 are shown in Table 4.

[0104] Table 4

[0105]

[0106] Please refer to Figure 7 , Figure 8 and Figure 9 , which are respectively the distortion curve diagram of the optical lens 200, the vertical axis chromatic aberration diagram, and the internal reflection ghost image optical path diagram of the fourth lens L4, from Figure 7 It can be seen that the optical distortion is controlled within 0.75%, indicating that the distortion of th...

no. 3 example

[0108] Such as Figure 10 As shown, it is a schematic diagram of the structure of the optical lens 300 provided in this embodiment. The optical lens 300 of this embodiment is roughly the same as the above-mentioned first embodiment, and the main difference lies in: the curved surface shapes of the fourth lens L4 and the fifth lens L5 There is a difference, the object side surface S7 of the fourth lens is smoother, which is beneficial to reduce the energy of the internal reflection ghost image of the fourth lens L4. The object side surface S9 of the fifth lens has a large edge recursion, that is, a large variation range of the edge curvature, which is beneficial for aberration correction.

[0109] Specifically, the design parameters of the optical lens 300 provided in this embodiment are shown in Table 5:

[0110] table 5

[0111]

[0112] In this embodiment, the aspheric parameters of each lens in the optical lens 300 are shown in Table 6.

[0113] Table 6

[0114]

...

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Abstract

The invention provides an optical lens and an imaging device. The optical lens sequentially comprises a diaphragm, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lensand an optical filter from an object side to an image side along an optical axis, and satisfies the following conditional expression of SAG8D0.5 / SAG8D1> 0.35, wherein SAG8D0.5 represents the vector height at the 1 / 2 aperture of the image side surface of the fourth lens, and SAG8D1 represents the vector height at the full aperture of the image side surface of the fourth lens. According to the invention, the optical lens and the imaging device effectively reduce the influence of ghost images on the imaging quality, realize a high-definition imaging effect, have the advantage of high imaging quality, and can effectively improve the shooting experiences of users.

Description

technical field [0001] The present invention relates to the technical field of optical lenses, and more particularly, to an optical lens and an imaging device. Background technique [0002] At present, with the popularity of portable electronic devices (such as smart phones and cameras) and the popularity of social, video, and live broadcast software, people are more and more fond of photography, and optical lenses have become the standard for portable electronic devices. Matching, optical lenses have even become the primary considerations for consumers when purchasing portable electronic devices. In recent years, with the continuous development of design level and manufacturing and processing technology, optical lenses are constantly developing in the direction of high performance. [0003] However, as people's requirements for image quality continue to increase, on the one hand, the structure of the lens will be correspondingly complicated, resulting in increased processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G02B9/62
Inventor 刘绪明徐丽丽曾昊杰曾吉勇
Owner JIANGXI LIANYI OPTICS CO LTD
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