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Imaging lens

An imaging lens and lens technology, which is applied in the field of imaging lens, can solve problems such as low cost performance, difficulty in miniaturization, and poor lens resolution, and achieve the effects of correcting aberrations, reducing tolerance sensitivity, and shortening the total length

Active Publication Date: 2017-08-18
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of all-glass lenses is high and it is difficult to miniaturize; at the same time, due to the use of spherical lenses, the resolution of the lens will be relatively poor, and the cost performance is not high

Method used

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Effect test

Embodiment 1

[0057] Refer to the following Figure 1 to Figure 2D An imaging lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an imaging lens according to Embodiment 1 of the present application is shown.

[0058] Such as figure 1 As shown, the imaging lens includes seven lenses L1-L7 arranged in sequence from the object side to the imaging side along the optical axis. The first lens L1 has the object side S1 and the image side S2; the second lens L2 has the object side S3 and the image side S4; the third lens L3 has the object side S5 and the image side S6; the fourth lens L4 has the object side S7 and image side S8; fifth lens L5, having object side S8 and image side S9; sixth lens L6, having object side S10 and image side S11; and seventh lens L7, having object side S12 and image side S13. Wherein, the fourth lens L4 and the fifth lens L5 are cemented to form a cemented lens. Optionally, the imaging lens may further i...

Embodiment 2

[0074] Refer to the following Figure 3 to Figure 4D An imaging lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural diagram of an imaging lens according to Embodiment 2 of the present application is shown.

[0075] Such as image 3As shown, the imaging lens includes seven lenses L1-L7 arranged in sequence from the object side to the imaging side along the optical axis. The first lens L1 has the object side S1 and the image side S2; the second lens L2 has the object side S3 and the image side S4; the third lens L3 has the object side S5 and the image side S6; the fourth lens L4 has the object side S7 and image side S8; fifth lens L5, having object side S8 and image side S9; sixth lens L6, having object side S10 and image side S11; and seventh lens L7, having object side S12 and image side...

Embodiment 3

[0086] Refer to the following Figure 5 to Figure 6D An imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an imaging lens according to Embodiment 3 of the present application is shown.

[0087] Such as image 3 As shown, the imaging lens includes seven lenses L1-L7 arranged in sequence from the object side to the imaging side along the optical axis. The first lens L1 has the object side S1 and the image side S2; the second lens L2 has the object side S3 and the image side S4; the third lens L3 has the object side S5 and the image side S6; the fourth lens L4 has the object side S7 and image side S8; fifth lens L5, having object side S8 and image side S9; sixth lens L6, having object side S10 and image side S11; and seventh lens L7, having object side S12 and image side S13. Wherein, the fourth lens L4 and the fifth lens L5 are cemented to form a cemented lens. Optionally, the imaging lens may further ...

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Abstract

The invention discloses an imaging lens, the imaging lens has a total effective focal length f and comprises a fist lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are arranged along the optical axis from the object side to the image side in sequence. The first lens and the fifth lens have negative focal power; the second lens, the fourth lens, the sixth lens and the seventh lens have positive focal power or negative focal power; the third lens has positive focal power, and an effective focal length f3 of the third lens and the total effective focal length f satisfies 1<f3 / f<1.5.

Description

technical field [0001] The present invention relates to an imaging lens, and more particularly, the present invention relates to an imaging lens including seven lenses. Background technique [0002] In recent years, with the development of science and technology, portable electronic products gradually rise, and portable electronic products with camera functions are more favored by people. For imaging lenses mounted on sports equipment such as vehicle camera lenses, surveillance camera lenses, and drones, they also tend to develop in the direction of high pixels and wide angles. In addition, higher requirements are placed on the stability of the performance of the lens under different temperature conditions. [0003] Since the performance expansion coefficient of the glass lens itself is small, it is less affected by temperature, therefore, an all-glass lens lens can be used to maintain the stability of the lens performance under different temperature conditions. However, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00
CPCG02B13/0015G02B13/0045G02B13/006G02B13/06
Inventor 戴付建黄林贾远林
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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