Camera shooting lens group

A camera lens and lens technology, applied in the direction of optical components, optics, instruments, etc., can solve the problems that cannot meet the imaging requirements, and achieve the effect of good imaging quality

Active Publication Date: 2017-11-03
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous development of portable electronic products such as smart phones, higher requirements are put forward for the matching camera lens group, especially in the case of insufficient light (such as rainy days, dusk, etc.) and hand shake. The imaging lens group with Fno of 2.0 or above can no longer meet the higher-order imaging requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Refer to the following Figures 1 to 2E An imaging lens group according to Embodiment 1 of the present application will be described. figure 1 A schematic structural diagram of an imaging lens group according to Embodiment 1 of the present application is shown.

[0077] Such as figure 1 As shown, the imaging lens group sequentially includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 along the optical axis from the object side to the imaging side. The imaging lens group may further include a photosensitive element disposed on the imaging surface S11.

[0078] The first lens L1 has positive refractive power, the object side S1 is convex, the image side S2 is concave, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0079] The second lens L2 has positive refractive power, the object side S3 is convex, the image side S4 is concave, and both the object side S3 and the image sid...

Embodiment 2

[0100] Refer to the following Figure 3 to Figure 4E An imaging lens group 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 group according to Embodiment 2 of the present application is shown.

[0101] Such as image 3 As shown, the imaging lens group sequentially includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 along the optical axis from the object side to the imaging side. The imaging lens group may further include a photosensitive element disposed on the imaging surface S11.

[0102] The first lens L1 has positive refractive power, the object side S1 is convex, the image side S2 is concave, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0103] The second lens...

Embodiment 3

[0117] Refer to the following Figure 5 to Figure 6E An imaging lens group according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an imaging lens group according to Embodiment 3 of the present application is shown.

[0118] Such as Figure 5 As shown, the imaging lens group sequentially includes a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and an imaging surface S11 along the optical axis from the object side to the imaging side. The imaging lens group may further include a photosensitive element disposed on the imaging surface S11.

[0119] The first lens L1 has positive refractive power, the object side S1 is convex, the image side S2 is concave, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0120] The second lens L2 has positive refractive power, the object side S3 is convex, the image side S4 is concave, and both the object side S3 and the image ...

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Abstract

The application discloses a camera shooting lens group which comprises a first lens, a second lens, a second lens and a fourth lens that are orderly arranged from an object side to an image side along an optical axis. Object side faces of the first lens and the second lens are convex faces; an image side face of the third lens is a convex face, an image side face of the fourth lens is a concaved face, both of the first lens and the third lens have positive focal power, the second lens and the fourth lens have positive focal power or negative focal power, and total effective focal length f of the camera shooting lens group and an entrance pupil diameter EPD of the camera shooting lens group satisfy the condition of f/EPD<1.5.

Description

technical field [0001] The present application relates to an imaging lens group, and more specifically, the present application relates to a large-aperture, high-brightness imaging lens group comprising four lenses. Background technique [0002] With the improvement of performance and size reduction of commonly used photosensitive elements such as photosensitive coupling device (CCD) or complementary metal oxide semiconductor device (CMOS), higher imaging quality and miniaturization of the matching optical imaging system are proposed. requirements. [0003] In order to meet the requirements of miniaturization, the aperture number Fno (the total effective focal length of the lens / the entrance pupil diameter of the lens) of the existing imaging lens group is usually configured at 2.0 or more, so as to have good optical performance while realizing miniaturization . However, with the continuous development of portable electronic products such as smart phones, higher requiremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
Inventor 王新权
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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