Optical imaging lens

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

Active Publication Date: 2017-12-05
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 matching imaging lenses, especially in the case of insufficient light (such as rainy days, dusk, etc.) Imaging lenses with 2.0 or above can no longer meet higher-level imaging requirements

Method used

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Experimental program
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Embodiment 1

[0065] 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.

[0066] Such as figure 1 As shown, the optical imaging lens 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 optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.

[0067] The first lens L1 has negative 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.

[0068] 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 ...

Embodiment 2

[0090] 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.

[0091] Such as image 3 As shown, the optical imaging lens 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 optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.

[0092] The first lens L1 has negative 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.

[0093] The sec...

Embodiment 3

[0108] 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.

[0109] Such as Figure 5 As shown, the optical imaging lens 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 optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.

[0110] The first lens L1 has negative refractive power, the object side S1 is concave, the image side S2 is concave, and both the object side S1 and the image side S2 of the first lens L1 are aspherical.

[0111] 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 t...

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PUM

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Abstract

The invention discloses an optical imaging lens, and the lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from the object space to the image space along an optical axis. The first lens has the negative focal power. The second lens has the positive focal power. At least one of the second lens and the fourth lens has the positive focal power. The central thickness CT2 of the second lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis meet a formula: CT2 / CT4<0.5.

Description

technical field [0001] The present application relates to an optical imaging lens, and more particularly, the present application relates to an optical imaging lens including 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), the miniaturization, light weight and high imaging quality of the matching imaging lens higher requirements have been put forward. [0003] The aperture number Fno (the total effective focal length of the lens / the entrance pupil diameter of the lens) of the existing imaging lens is usually configured at 2.0 or above, so as to achieve miniaturization and have good optical performance at the same time. However, with the continuous development of portable electronic products such as smart phones, higher requirements are put forward for matching imaging lenses, especia...

Claims

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Application Information

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IPC IPC(8): G02B13/00
CPCG02B13/0045
Inventor 贾远林
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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