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Optical imaging lens

An optical imaging lens and lens technology, applied in optics, optical components, instruments, etc., can solve problems such as the inability to meet imaging requirements and the inability to guarantee the imaging quality of the lens, and achieve the effect of high imaging quality

Active Publication Date: 2018-01-23
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of lens can meet the miniaturization requirements, it cannot guarantee the imaging quality of the lens in the case of insufficient light, so the lens with an aperture number Fno of 2.0 or above can no longer meet the higher-level imaging requirements

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] 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.

[0080] 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 stop STO, a second lens E2, a third lens E3, and a fourth lens E4 , the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0081] The first lens E1 has positive refractive power, its object side S1 is convex, 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,...

Embodiment 2

[0110] 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.

[0111] 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 stop STO, a second lens E2, a third lens E3, and a fourth lens E4 , the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0112] The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has negative refractive power, its ...

Embodiment 3

[0125] 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.

[0126] 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 stop STO, a second lens E2, a third lens E3, and a fourth lens E4 , the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0127] The first lens E1 has positive refractive power, its object side S1 is convex, 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 conve...

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Abstract

The invention discloses an optical imaging lens. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lensfrom the object side to the image side along the optical axis. The first lens is positive in focal power, and the object side surface thereof is a convex surface. The second lens is negative in focalpower, and the third lens is positive in focal power. The fourth lens and the fifth lens are positive in focal power or negative in focal power. The sixth lens is positive in focal power. The seventhlens is negative in focal power, wherein the object side surface and the image side surface thereof are both concave surfaces. The combined focal length f12 of the first lens and the second lens, andthe combined focal length f34 of the third lens and the fourth lens meet the relation of |f12 / f34|<=0.3.

Description

technical field [0001] The present invention relates to an optical imaging lens, more specifically, the present invention relates to an optical imaging lens including seven lenses. Background technique [0002] With the improvement of the performance and the reduction of the size of commonly used photosensitive elements such as photosensitive coupling devices (CCD) or complementary metal oxide semiconductor elements (CMOS), the number of pixels of the photosensitive element increases and the size of the pixel decreases, so that matching The high imaging quality and miniaturization of advanced optical imaging lenses put forward higher requirements. [0003] The reduction in pixel size means that the amount of light transmitted through the lens will be reduced within the same exposure time. However, in a dark environment (such as rainy days, dusk, etc.), the lens needs to have a large amount of light to ensure image quality. The aperture number Fno (the total effective focal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00
Inventor 徐标张凯元闻人建科
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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