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Optical lens

A kind of optical lens and lens technology, applied in the field of optical lens, can solve the problem of wide viewing angle and achieve the effect of high imaging quality and low sensitivity

Inactive Publication Date: 2020-04-17
辽宁中蓝光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires the role of a wide-angle lens, which has a shorter focal length than a standard lens but a wider viewing angle.

Method used

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Examples

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Embodiment 1

[0042] Refer to the following Figure 1 to Figure 2D An optical lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of the optical lens according to Embodiment 1 of the present application is shown.

[0043] like figure 1 As shown, the optical 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 E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, Filter E5, image plane S13.

[0044] The first lens E1 has negative refractive power, its object side S2 is concave, and the image side S3 is concave; the second lens E2 has positive refractive power, its object side S5 is convex, and the image side S6 is convex; the third lens E3 has Positive refractive power, the object side S7 is convex, and the image side S8 is convex; the fourth lens E4 has negative refractive power, the object side S9 is ...

Embodiment 2

[0063] Refer to the following Figure 3 to Figure 4D An optical 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 view of the optical lens according to Embodiment 2 of the present application is shown.

[0064] like image 3 As shown, the optical 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 E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, Filter E5 image plane S13.

[0065] The first lens E1 has negative refractive power, its object side S2 is concave, and the image side S3 is concave; the second lens E2 has positive refractive power, its object side S5 is convex, and the image side S6 is convex; the third lens E3 has Positive refractive power, ...

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Abstract

The invention discloses an optical lens. The lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from an object side to an image side along an optical axis, whereinthe first lens has negative focal power, an image side surface of the first lens is a concave surface, at least one surface of the first lens is an aspheric surface, the second lens has positive focal power, an object side surface of the second lens is a convex surface, the third lens has positive focal power, an object side surface of the third lens is a convex surface, at least one surface is aspheric, the fourth lens is a lens with negative focal power and high refractive power, the half-image height IH of the optical lens and the total optical length TTL of the optical lens satisfy IH / TTL< 0.27, optical distortion of the optical lens is smaller than 25%, the field angle FOV of the optical lens is larger than or equal to 101 degrees, and the total optical length TTL of the optical lens and the optical back focus BFL of the optical lens meet the condition that TTL / BFL is larger than 3.8.

Description

technical field [0001] The present application relates to an optical lens, and more particularly, the present application relates to an optical lens including four lenses. Background technique [0002] With the continuous development of portable electronic products such as smartphones, lens shooting requires a wider field of view. This requires the role of wide-angle lenses, which have a shorter focal length than standard lenses but have a wider viewing angle. As technology develops, lenses need to meet miniaturization requirements while having wide-angle characteristics. Contents of the invention [0003] The present invention provides an optical lens applicable to portable electronic products, which can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art. [0004] An optical lens, which sequentially includes a first lens, a second lens, a third lens and a fourth lens along an optical axis from the object side to the image...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/004G02B13/06G02B13/18
Inventor 王春燕金兑映
Owner 辽宁中蓝光电科技有限公司
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