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Camera shooting lens

A camera lens and lens technology, applied in the field of camera lenses, can solve the problems of unfavorable lens imaging quality, reduction of restrictions, unfavorable lens miniaturization and light weight, etc., and achieve the effect of improving imaging quality

Active Publication Date: 2017-09-08
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to achieve wide-angle characteristics, the method of increasing the number of lenses is usually used to expand the field of view of the lens, but this method is not conducive to the miniaturization and light weight of the lens; at the same time, too many lenses will reduce the All kinds of aberrations are limited, which is not conducive to improving the imaging quality of the lens

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Refer to the following Figure 1 to Figure 2C 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.

[0078] Such as figure 1 As shown, the imaging lens includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 in sequence from the object side to the imaging side along the optical axis. The camera lens may also include a photosensitive element disposed on the imaging surface S11.

[0079] The first lens L1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0080]The second lens L2 has positive refractive power, its object side S3 is concave, and its image side S4 is convex, and both the object side S3 and the image side S4 of the seco...

Embodiment 2

[0102] Refer to the following Figure 3 to Figure 4C 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.

[0103] Such as image 3 As shown, the imaging lens includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 in sequence from the object side to the imaging side along the optical axis. The camera lens may also include a photosensitive element disposed on the imaging surface S11.

[0104] The first lens L1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0105] The second lens L2 has positive ref...

Embodiment 3

[0120] Refer to the following Figure 5 to Figure 6C 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 includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 in sequence from the object side to the imaging side along the optical axis. The camera lens may also include a photosensitive element disposed on the imaging surface S11.

[0122] The first lens L1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0123] The second lens L2 has positive refractive power, its object side S3 is concave, and its image side S4 is convex, and both the object side S3 and the image side S4 of the second...

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Abstract

The invention discloses camera shooting lens. The camera shooting lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens with focal power from an object side to an image side along an optical axis, and is characterized in that at least one of the first lens and the second lens has positive focal power; the object side surface of the third lens and the image side surface of the fourth lens are concave surfaces; and half of the length, which is represented as ImgH, of a diagonal line of an effective pixel region on an imaging surface of the cameras shooting lens and the total effective focal length f of the cameras shooting camera meets an inequation that ImgH / f>1.

Description

technical field [0001] The present invention relates to a camera lens, and more specifically, the invention relates to a wide-angle camera lens including four lenses. Background technique [0002] With the development of chip technology such as CCD or CMOS, the camera lens is gradually developing in the field of miniaturization, light weight and high pixel. In some application fields, corresponding requirements are put forward for the large field of view of the lens, which requires the lens to have wide-angle characteristics while meeting miniaturization and high imaging quality. In addition, in order to achieve stable mass production, it is also necessary for the lens to have good sensitivity. [0003] In order to achieve wide-angle characteristics, the method of increasing the number of lenses is usually used to expand the field of view of the lens, but this method is not conducive to the miniaturization and light weight of the lens; at the same time, too many lenses will...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G03B11/00
CPCG02B13/004G02B13/06G03B11/00
Inventor 黄林
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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