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Optical imaging lens

An optical imaging lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of temperature adaptability optimization, inability to take into account off-axis imaging quality and module miniaturization, and difficulty in taking into account the temperature adaptability of imaging quality. Achieve high image quality

Pending Publication Date: 2019-01-25
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional optical lenses do not strictly correct the distortion caused by the linear relationship between image height and half field angle (fθ), which is not conducive to algorithm processing or anti-distortion correction
Moreover, the traditional optical lens has not optimized the temperature adaptability when the plastic aspheric surface is introduced, and it is difficult to balance good imaging quality and better temperature adaptability
In addition, traditional wide-angle lenses cannot meet the requirements of good off-axis imaging quality and module miniaturization

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0075] Refer to the following Figure 1 to Figure 2D An optical imaging lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0076] Such as figure 1 As shown, the optical imaging lens according to the exemplary embodiment of the present application includes in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5, sixth lens E6, seventh lens E7, filter E8 and imaging surface S17.

[0077] The first lens E1 has negative refractive power, its object side S1 is concave, and its image side S2 is concave. The second lens E2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is conv...

Embodiment 2

[0108] Refer to the following Figure 3 to Figure 4D An optical 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 optical imaging lens according to Embodiment 2 of the present application is shown.

[0109] Such as image 3 As shown, the optical imaging lens according to the exemplary embodiment of the present application includes in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5, sixth lens E6, seventh lens E7, filter E8 and imaging surface S17.

[0110] The first lens E1 has negative refractive power, its object side S1 is concave, and its image side S2 is concave. The second lens E2 has negative refractive power, its object side S3 is convex, and ...

Embodiment 3

[0124] Refer to the following Figure 5 to Figure 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0125] Such as Figure 5 As shown, the optical imaging lens according to the exemplary embodiment of the present application includes in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5, sixth lens E6, seventh lens E7, filter E8 and imaging surface S17.

[0126] The first lens E1 has negative refractive power, its object side S1 is concave, and its image side S2 is concave. The second lens E2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is co...

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Abstract

The invention discloses an optical imaging lens, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens along an optical axis from an object side to an image side. The first lens has negative focal power; the second lens has negative focal power; the third lens has positive focal power; the fourth lens has positive focalpower; the fifth lens has focal power, and the object side surface of the fifth lens is a concave surface; the sixth lens has focal power; and the seventh lens has negative focal power. An effectivefocal length f1 of the first lens and a total effective focal length f of the optical imaging lens meet an inequation: -3.5<f1 / f<0.

Description

technical field [0001] The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including seven lenses. Background technique [0002] In recent years, optical lenses equipped with complementary metal oxide semiconductor devices (CMOS) or photosensitive coupling devices (CCD) have been widely used in various fields, not only for image acquisition, but also for spatial positioning. Traditional optical lenses do not strictly correct the distortion caused by the linear relationship between image height and half field angle (fθ), which is not conducive to algorithm processing or anti-distortion correction. Moreover, the traditional optical lens has not optimized the temperature adaptability when the plastic aspheric surface is introduced, and it is difficult to balance good imaging quality and better temperature adaptability. In addition, traditional wide-angle lenses cannot meet the requirements of good off-axis imaging quali...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18G02B9/64
Inventor 王新权黄林
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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