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Wide-angle optical lens

An optical lens, wide-angle technology, applied in the direction of optics, optical components, instruments, etc.

Pending Publication Date: 2021-08-03
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

[0003] Since the existing optical lens is difficult to achieve a balance between the requirements of imaging quality, sensitivity, aperture size, volume or viewing angle, it is urgent to develop a new optical lens

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Refer to the following figure 1 , Figure 2A to Figure 2D An optical lens according to Embodiment 1 of the present invention will be described. figure 1 A schematic structural view of the optical lens according to Embodiment 1 of the present invention is shown.

[0069] Such as figure 1 As shown, the optical lens according to the exemplary embodiment of the present invention 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, and a fourth lens E4, Filter E5 and imaging surface S12.

[0070] Wherein, the first lens E1 has negative refractive power, its object side S1 is convex, and the image side S2 is concave; the second lens E2 has positive refractive power, its object side S4 is convex, and the image side S5 is convex; the third lens E3 has a negative refractive power, its object side S6 is convex, and its image side S7 is concave; the fourth lens E4 has positive refrac...

Embodiment 2

[0093] Refer to the following image 3 , Figure 4A to Figure 4D An optical lens according to Embodiment 2 of the present invention 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 optical lens according to Embodiment 2 of the present invention is shown.

[0094] Such as image 3 As shown, the optical lens according to the exemplary embodiment of the present invention 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, and a fourth lens E4, Filter E5 and imaging surface S12.

[0095] Wherein, the first lens E1 has negative refractive power, its object side S1 is convex, and the image side S2 is concave; the second lens E2 has positive refractive power, its object side S4 is convex, and the image side S5 is convex; the third len...

Embodiment 3

[0115] Refer to the following Figure 5 , Figure 6A to Figure 6D An optical lens according to Embodiment 3 of the present invention will be described. Figure 5 A schematic structural diagram of an optical lens according to Embodiment 3 of the present invention is shown.

[0116] Such as Figure 5 As shown, the optical lens according to the exemplary embodiment of the present invention 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, and a fourth lens E4, Filter E5 and imaging surface S12.

[0117] The first lens E1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens E2 has positive refractive power, its object side S4 is convex, and its image side S5 is convex; the third lens E3 has Negative refractive power, the object side S6 is convex, and the image side S7 is concave; the fourth lens E4 has positive refractive p...

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Abstract

The invention relates to the technical field of imaging, and concretely relates to a wide-angle optical lens. The optical 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, the first lens has negative focal power, and the part, close to the optical axis, of the object side face of the first lens is a convex face; the second lens has positive focal power, and the object side surface and the image side surface of the second lens are convex surfaces; the third lens has negative focal power, the object side near the optical axis is a convex surface, and the image side surface is a concave surface; and the fourth lens has positive focal power, and a paraxial part of the object side surface of the fourth lens is a convex surface. By reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens and the axial distance between the lenses, the optical lens has the excellent quality of being ultrathin, miniaturized, wide in angle, low in sensitivity, high in imaging and the like.

Description

technical field [0001] The invention relates to the field of imaging technology, in particular to a wide-angle optical lens. Background technique [0002] With the rapid development of technology, the application range of electronic devices equipped with optical lenses is wider, and the requirements for optical lenses are also more diverse. With the continuous development of electronic products, the wide-angle of mobile phone lenses is becoming more and more important. The wide-angle lens can not only satisfy the large angle, but also ensure the characteristics of large aperture and high resolution. Therefore, the wide-angle lens has become an indispensable part of technological development. [0003] Since the existing optical lens is difficult to achieve a balance among requirements such as imaging quality, sensitivity, aperture size, volume, or viewing angle, it is urgent to develop a new optical lens. Contents of the invention [0004] In order to solve the above techn...

Claims

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Application Information

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