Infrared confocal zoom lens

A zoom lens and infrared confocal technology, applied in the field of infrared confocal zoom lenses, can solve the problems of blue-violet fringing, low relative illumination at the edge of the imaging surface, and small image surface, and achieve uniform relative illumination at the edge of the image surface and good images. Good color reproduction and infrared confocal performance

Pending Publication Date: 2020-11-27
XIAMEN LEADING OPTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the optical imaging lenses currently used in intelligent transportation systems still have many shortcomings, such as the low ratio of unit pixels (pixel), which is not conducive to the development of later algorithms; generally single-focus lenses limit the use of multiple scenes; the size of the lens target surface Most of them are about 1 / 1.8 inch and 1 inch, with a small image area and low total pixels; the general light transmission is relatively small, and the relative illumination at the edge of the imaging surface is relatively low; the general chromatic aberration optimization is insufficient, and blue-purple fringing is prone to occur; most of them are not confocal , needs LED supplementary light, which is easy to cause traffic accidents, etc. It can no longer meet the increasing requirements of users, and needs to be improved

Method used

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  • Infrared confocal zoom lens
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  • Infrared confocal zoom lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] Such as figure 1 with 9 As shown, an infrared confocal zoom lens includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, and a fifth lens in sequence along an optical axis I from the object side A1 to the image side A2 5. The sixth lens 6, the aperture 180, the seventh lens 7, the eighth lens 8, the ninth lens 9, the tenth lens 100, the eleventh lens 110, the twelfth lens 120, the thirteenth lens 130, the thirteenth lens The fourteenth lens 140, the fifteenth lens 150, the sixteenth lens 160, the seventeenth lens 170, the cover glass 190 and the imaging surface 220; the first lens 1 to the eleventh lens 110 each include a lens facing the object side A1 and An object side through which the imaging light passes and an image side facing the image side A2 through which the imaging light passes.

[0113] The first lens 1 has a negative 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 ...

Embodiment 2

[0138] Such as Figure 15 with 23 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.

[0139] The detailed optical data of this specific embodiment at the shortest focal length (wide-angle) is shown in Table 2-1.

[0140] Detailed optical data at the shortest focal length of the second embodiment of Table 2-1

[0141]

[0142] The detailed optical data at the longest focal length (telephoto) of this specific embodiment is shown in Table 2-2.

[0143] Detailed optical data at the longest focal length of Table 2-2 Example 2

[0144]

[0145]

[0146] Please refer to the following table for the detailed data of the parameters of each aspheric surface in this specific embodiment:

[0147] surface 131 132 K＝ -4.0281E+00 4.6242E+00 a 4 ＝

...

Embodiment 3

[0152] Such as Figure 29 with 37 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.

[0153] The detailed optical data of this specific embodiment at the shortest focal length (wide-angle) is shown in Table 3-1.

[0154] Detailed optical data at the shortest focal length of the third embodiment of Table 3-1

[0155]

[0156] The detailed optical data at the longest focal length (telephoto) of this specific embodiment is shown in Table 3-2.

[0157] Detailed optical data at the longest focal length of Table 3-2 Example 3

[0158]

[0159] Please refer to the following table for the detailed data of the parameters of each aspheric surface in this specific embodiment:

[0160] surface 131 132 K＝ -4.0281E+00 4.6242E+00 a 4 ＝

-9.2271E-07...

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Abstract

The invention relates to the technical field of lenses. The invention discloses an infrared confocal zoom lens which is provided with seventeen lenses. A first fixed lens group is formed by a first lens, a second lens and a third lens, and a zoom lens group is formed by a fourth lens, a fifth lens and a sixth lens; a seventh lens to a tenth lens form a second fixed lens group; an eleventh lens toa seventeenth lens form a focusing lens group; a diaphragm is arranged between the zoom lens group and the second fixed lens group; the refractive indexes and the surface types of the first lens to the seventeenth lens are correspondingly limited; and the first lens and the second lens are glued with each other, the fifth lens and the sixth lens are glued with each other, the ninth lens and the tenth lens are glued with each other, the eleventh lens and the twelfth lens are glued with each other, the fourteenth lens and the fifteenth lens are glued with each other, and the sixteenth lens and the seventeenth lens are glued with each other. The infrared confocal zoom lens has the advantages of large focal length section span, high unit pixel ratio, large image surface, large light transmission, small chromatic aberration and good infrared confocal property.

Description

technical field [0001] The invention belongs to the field of lens technology, and in particular relates to an infrared confocal zoom lens used in an intelligent traffic system. 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 intelligent transportation systems, the performance of optical imaging lenses is critical and will affect the reliability of the entire system. However, the optical imaging lenses currently used in intelligent transportation systems still have many shortcomings, such as the low ratio of unit pixels (pixel), which is not conducive to the development of later algorithms...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/14G02B15/15G02B13/14G02B13/18
CPCG02B13/14G02B13/18G02B15/15G02B15/144
Inventor 张军光张瑞翔
Owner XIAMEN LEADING OPTICS
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