Wide-angle optical imaging lens

A wide-angle optical and imaging lens technology, applied in the lens field, can solve the problems of large angle, low resolution, large distortion, etc., and achieve the effect of high color reproduction, high resolution, and high contrast

Pending Publication Date: 2020-05-22
XIAMEN LEADING OPTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the field of UAV aerial photography, wide-angle optical imaging lenses are generally used for shooting to obtain a larger field of view, but there are still many shortcomings in the existing wide-angle optical imaging lenses used in the field of UAV aerial photography, such as resolution It is relatively low, and the imaging quality is poor, which cannot satisfy the 4K high-pixel sensor; because of its large angle, it is difficult to correct the chromatic aberration, and it is easy to appear color shift and purple fringe; the distortion is large, the deformation is large, and the software correction is difficult, etc. Make improvements to meet the increasing demands of consumers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] like figure 1 As shown, a wide-angle optical imaging lens includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, Stop 110, the sixth lens 6, the seventh lens 7, the eighth lens 8, the ninth lens 9, the tenth lens 100, the protection sheet 120 and the imaging surface 130; the first lens 1 to the tenth lens 100 each include a An object side facing the object side A1 through which the imaging light passes and an image side facing the image side A2 through which the imaging light passes.

[0076] The first lens 1 has negative refractive power, the object side 11 of the first lens 1 is convex, and the image side 12 of the first lens 1 is concave.

[0077] The second lens 2 has a negative refractive power, the object side 21 of the second lens 2 is convex, and the image side 22 of the second lens 2 is concave.

[0078] The third lens 3 has a negative refractive power, the object side 31 of the third lens 3 is concave, and the image side 3...

Embodiment 2

[0097] like Figure 5 As can be seen, the concave-convex surface and refractive index of each lens in this embodiment and the first embodiment are the same, and only the optical parameters such as the radius of curvature of the lens surface and the thickness of the lens are different.

[0098] The detailed optical data of this specific embodiment are shown in Table 2-1.

[0099] Detailed optical data of Table 2-1 Example 2

[0100]

[0101]

[0102] Please refer to the numerical values ​​of the relevant conditional expressions of this specific embodiment Figure 17 .

[0103] For the resolution of this specific embodiment, please refer to Image 6 , it can be seen from the figure that the transfer function can reach a high frequency of 300lp / mm, the resolution is high, up to 4K level, and the contrast is high; for color difference, please refer to Figure 7 , it can be seen that the color difference is small, under the wide spectrum of visible light 435nm~656nm, the ...

Embodiment 3

[0106] like Figure 9 As can be seen, the concave-convex surface and refractive index of each lens in this embodiment and the first embodiment are the same, and only the optical parameters such as the radius of curvature of the lens surface and the thickness of the lens are different.

[0107] The detailed optical data of this specific embodiment are shown in Table 3-1.

[0108] Detailed optical data of the third embodiment of table 3-1

[0109] surface Radius of curvature / mm Thickness / mm material Refractive index Abbe number Focal length / mm - subject surface Infinity Infinity 11 first lens 10.966 1.19 H-ZF88 1.95 17.94 -8.59 12 4.451 2.11 21 second lens 14.273 0.55 Glass 1.73 54.67 -5.69 22 3.172 2.27 31 third lens -7.729 0.46 Glass 1.50 81.61 -5.06 32 3.819 0 41 fourth lens 3.819 1.71 Glass 1.52 58.95 5.73 42 -11.540 0.05 ...

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Abstract

The invention relates to the technical field of lenses. The invention discloses a wide-angle optical imaging lens, which comprises ten lenses, and is characterized in that a first lens and a second lens are convex-concave lenses with negative refractive indexes; the third lens is a concave lens with negative refractive index; the fourth lens, the fifth lens and the ninth lens are convex lenses with positive refractive indexes; the sixth lens is a concave-convex lens with a positive refractive index; the seventh lens with positive refractive index has a convex image-side surface; the eighth lens and the tenth lens are concave-convex lenses with negative refractive indexes; and the third lens and the fourth lens are glued with each other and / or the seventh lens and the eighth lens are gluedwith each other and / or the ninth lens and the tenth lens are glued with each other. The wide-angle optical imaging lens has the advantages that the angle is wide; the resolution ratio and the imagingquality are high; the aberration is low, and color reducibility is high; and distortion is low.

Description

technical field [0001] The invention belongs to the technical field of lenses, and in particular relates to a wide-angle optical imaging lens for aerial photography of drones. Background technique [0002] With the continuous advancement of science and technology and the continuous development of society, optical imaging lenses have also developed rapidly in recent years. Optical imaging lenses are widely used in smart phones, tablet computers, video conferencing, vehicle monitoring, security monitoring, unmanned Therefore, the requirements for optical imaging lenses are getting higher and higher. [0003] In the field of UAV aerial photography, wide-angle optical imaging lenses are generally used for shooting to obtain a larger field of view, but there are still many shortcomings in the existing wide-angle optical imaging lenses used in the field of UAV aerial photography, such as resolution It is relatively low, and the imaging quality is poor, which cannot satisfy the 4K...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06
CPCG02B13/0015G02B13/006G02B13/06
Inventor 上官秋和刘青天李雪慧
Owner XIAMEN LEADING OPTICS
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