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Optical imaging lens

An optical imaging lens and imaging technology, applied in the field of lenses, can solve the problems of not being able to satisfy long focal length, no distortion and high resolution at the same time, and achieve the effect of good night vision, small back focus change, and long focal length

Pending Publication Date: 2019-06-07
XIAMEN LEADING OPTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long distance and the importance of evidence, the optical imaging lens is required to have a long focal length, no distortion and high resolution, so that the obtained evidence is more complete and clearer, and provides strong evidence for law enforcement, but the existing ones are used on the road The optical imaging lens cannot meet the requirements of long focal length, no distortion and high resolution at the same time

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0077] Such as figure 1 As shown, the present invention discloses an optical imaging lens, which sequentially includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, and a diaphragm along an optical axis I from the object side A1 to the image side A2. 10. The fifth lens 5, the sixth lens 6, the seventh lens 7, the eighth lens 8, the ninth lens 9 and the imaging surface 110; the first lens 1 to the ninth lens 9 each include a lens facing the object side A1 and making The object side through which the imaging light passes and an image side facing the image side A2 and allowing the imaging light to pass through;

[0078] The first lens 1 has a positive refractive power, the object side 11 of the first lens 1 is a convex surface, and the image side 12 of the first lens 1 is a concave surface;

[0079] The second lens 2 has a negative refractive power, the object side 21 of the second lens 2 is concave, and the image side 22 of the second lens 2 is concave;

[...

Embodiment 2

[0096] Such as Figure 7 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.

[0097] The detailed optical data of this specific embodiment are shown in Table 2-1.

[0098] Detailed optical data of Table 2-1 Example 2

[0099]

[0100]

[0101] For the values ​​of other relevant conditional expressions in this specific embodiment, please refer to Figure 25 .

[0102] Field curvature and distortion diagrams of this specific embodiment are as follows Figure 8 As shown in (A) and (B), it can be seen that the distortion is small; for resolution, please refer to Figure 9 with 10 , it can be seen from the figure that the resolution is good and the resolution is high; for visible and infrared 850nm confocal properties, please refer to Figure 11 with 12 , it c...

Embodiment 3

[0105] Such as Figure 13 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.

[0106] The detailed optical data of this specific embodiment are shown in Table 3-1.

[0107] Detailed optical data of the third embodiment of table 3-1

[0108]

[0109]

[0110] For the values ​​of other relevant conditional expressions in this specific embodiment, please refer to Figure 25 .

[0111] Field curvature and distortion diagrams of this specific embodiment are as follows Figure 14 As shown in (A) and (B), it can be seen that the distortion is small; for resolution, please refer to Figure 15 with 16 , it can be seen from the figure that the resolution is good and the resolution is high; for visible and infrared 850nm confocal properties, please refer to Figure 1...

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Abstract

The invention relates to the technical field of lenses, in particular to an optical imaging lens. The invention discloses a fish-eye lens comprising nine lens from the first lens to the ninth lens successively along the optical axis from an object side to an image side. The first lens is a convex-concave lens having a positive refractive index; the second lens is a concave-convex lens having a negative refractive index; the third lens is a convex-convex lens having a positive refractive index; the fourth lens is a convex-convex lens having a positive refractive index; the fifth lens is a convex-convex lens having a positive refractive index; the sixth lens is a concave-concave lens having a negative refractive index; the seventh lens is a convex-concave lens having a negative refractive index; the eighth lens is a convex-convex lens having a positive refractive index; and the ninth lens is a concave-convex lens having a negative refractive index. The optical imaging lens has advantagesof long focal length, distortion prevention, high resolution and large light transmission.

Description

technical field [0001] The invention belongs to the technical field of lenses, and in particular relates to an optical imaging lens. Background technique [0002] Road monitoring is a special device for traffic police to take pictures or videos on the road for evidence collection. Due to the long distance and the importance of evidence, the optical imaging lens is required to have a long focal length, no distortion and high resolution, so that the obtained evidence is more complete and clearer, and provides strong evidence for law enforcement, but the existing ones are used on the road Advanced optical imaging lenses cannot meet the requirements of long focal length, no distortion and high resolution at the same time. In addition, since the road monitoring is used in various outdoor environments, in order to be used in poorly lit environments, the optical imaging lens is also required to have greater light transmission. Contents of the invention [0003] The object of th...

Claims

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Application Information

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IPC IPC(8): G02B13/14
Inventor 张军光
Owner XIAMEN LEADING OPTICS
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