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Day and night dual-purpose optical imaging lens

An optical imaging lens, a dual-purpose technology, applied in the lens field, can solve the problems of low resolution, small image surface, and low light input, and achieve good low-light effects, high resolution, and good confocal performance

Pending Publication Date: 2020-05-12
XIAMEN LEADING OPTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the optical imaging lens with a focal length of 50mm currently used in intelligent transportation systems has a small image area, generally 1 / 1.7 inch to 1.1 inch; it is not good for mail control and low resolution; when used in high and low temperature environments , the out-of-focus is serious; the light transmission is generally relatively small, and in low-light environments, the incoming light is low, and the shooting picture is dark; when applied in the infrared band, there will be obvious defocus; in order to meet the high resolution, the number of lenses is large and Complicated, resulting in a long overall length, which can no longer meet the increasing requirements of intelligent transportation systems, and urgently needs to be improved

Method used

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  • Day and night dual-purpose optical imaging lens
  • Day and night dual-purpose optical imaging lens
  • Day and night dual-purpose optical imaging lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Such as figure 1 As shown, a day and night dual-purpose optical imaging 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. Lens 5, diaphragm 110, sixth lens 6, seventh lens 7, eighth lens 8, ninth lens 9, tenth lens 100 and imaging surface 120, each of the first lens 1 to tenth lens 100 includes a direction The object side A1 and 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.

[0084] The first lens 1 has positive 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.

[0085] 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.

[0086] The third lens 3 has a negative refract...

Embodiment 2

[0104] 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.

[0105] The detailed optical data of this specific embodiment are shown in Table 2-1.

[0106] Detailed optical data of Table 2-1 Example 2

[0107]

[0108]

[0109] Please refer to the numerical values ​​of the relevant conditional expressions of this specific embodiment Figure 25 .

[0110] For the visible light and infrared confocal properties of this specific embodiment, please refer to Figure 8 and 9 , it can be seen that the confocal performance of visible light and infrared is good, and the defocus amount when switching between visible light and infrared is 10 μm; for resolution, please refer to Figure 10-12 , it can be seen from the figure that the transmission is well ...

Embodiment 3

[0113] 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.

[0114] The detailed optical data of this specific embodiment are shown in Table 3-1.

[0115] Detailed optical data of the third embodiment of table 3-1

[0116]

[0117]

[0118] Please refer to the numerical values ​​of the relevant conditional expressions of this specific embodiment Figure 25 .

[0119] For the visible light and infrared confocal properties of this specific embodiment, please refer to Figure 14 and 15 , it can be seen that the confocal performance of visible light and infrared is good, and the defocus amount when switching between visible light and infrared is 10 μm; for resolution, please refer to Figure 16-18 , it can be seen from the figure that the tran...

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Abstract

The invention relates to the technical field of lenses. The invention discloses a day and night dual-purpose optical imaging lens, which comprises ten lenses, and is characterized in that a first lensis a convex-concave lens with a positive refractive index; the second lens is a convex-concave lens with a negative refractive index; the third lens, the sixth lens and the tenth lens are concave lenses with negative refractive indexes; the fourth lens, the fifth lens, the seventh lens and the ninth lens are convex lenses with positive refractive indexes; the eighth lens has a positive refractiveindex, and the object side surface of the eighth lens is a convex surface. The lens has a large image plane; the resolution is high, and the imaging quality is good; the high and low temperature defocusing is small or no defocusing is caused; light transmission is high; the total length is short; and the confocal property of visible light and infrared light is good.

Description

technical field [0001] The invention belongs to the technical field of lenses, and in particular relates to a day and night optical imaging lens for intelligent transportation. 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, and are widely used in smart phones, tablet computers, video conferencing, vehicle monitoring, security monitoring, intelligent transportation systems, etc. 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 lens with a focal length of 50mm currently used in intelligent transportation systems has a small image area, generally 1 / 1.7 inch to 1.1 inch; it is not good for mail control and low ...

Claims

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Application Information

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IPC IPC(8): G02B13/14G02B13/00G02B7/02
CPCG02B13/14G02B13/008G02B13/006G02B7/021G02B7/025
Inventor 上官秋和李雪慧刘青天
Owner XIAMEN LEADING OPTICS
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