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Camera lens

A camera lens and lens technology, applied in the field of camera lens, can solve the problems of unable to meet the imaging requirements, unable to guarantee the imaging quality of the lens, etc., and achieve the effect of high imaging quality

Active Publication Date: 2018-01-12
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 requirements of miniaturization, it cannot guarantee the imaging quality of the lens under the conditions of insufficient light (such as rainy days, dusk, etc.), hand shake, etc. Therefore, the lens with an aperture number Fno of 2.0 or above cannot meet the requirements of higher Order Imaging Requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Refer to the following Figure 1 to Figure 2D An imaging lens according to Embodiment 1 of the present application will be described. figure 1 A schematic structural diagram of an imaging lens according to Embodiment 1 of the present application is shown.

[0075] Such as figure 1 As shown, the imaging lens according to the exemplary embodiment of the present application includes in sequence from the object side to the image side along the optical axis: a first lens L1, a stop STO, a second lens L2, a third lens L3, a fourth lens L4, The fifth lens L5, the sixth lens L6, the seventh lens L7, the filter L8 and the imaging surface S17.

[0076] The first lens L1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens L2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave; the third lens L3 has Positive refractive power, the object side S5 is convex, and the image side S6 is...

Embodiment 2

[0105] Refer to the following Figure 3 to Figure 4D An imaging lens according to Embodiment 2 of the present application will be 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.

[0106] Such as image 3 As shown, the imaging lens according to the exemplary embodiment of the present application includes in sequence from the object side to the image side along the optical axis: a first lens L1, a stop STO, a second lens L2, a third lens L3, a fourth lens L4, The fifth lens L5, the sixth lens L6, the seventh lens L7, the filter L8 and the imaging surface S17.

[0107]The first lens L1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens L2 has negative refractive power, its object side S3 is convex, ...

Embodiment 3

[0120] 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.

[0121] Such as Figure 5 As shown, the imaging lens according to the exemplary embodiment of the present application includes in sequence from the object side to the image side along the optical axis: a first lens L1, a stop STO, a second lens L2, a third lens L3, a fourth lens L4, The fifth lens L5, the sixth lens L6, the seventh lens L7, the filter L8 and the imaging surface S17.

[0122] The first lens L1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens L2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave; the third lens L3 has Positive refractive power, the object side S5 is convex, and the image side S6 is co...

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Abstract

The invention discloses a camera lens. The lens sequentially comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with focal power, a fourth lens with focal power, a fifth lens with focal power, a sixth lens with focal power and a seventh lens with negative refractive power from an object side to an image side along an optical axis, wherein the object side surface of the sixth lens is a convex surface; the image side surface of the sixth lens is a also a convex surface; and the object side surface of the seventh lens is a convex surface. The effective focal length of the second lens and the effective focal length f of the camera lens meet the following relational expression: -3< / = f2 / f< -1.5.

Description

technical field [0001] The present application relates to a photographic lens, and more particularly, the present application relates to a photographic 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 the camera lens 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, the lens needs to have a large amount of light to ensure the image quality. The aperture number Fno (the total effective focal length of the lens / the entrance pupil diamet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045
Inventor 高雪李明闻人建科
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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