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Long-focus infrared synchronous imaging lens

A synchronous imaging and infrared technology, which is applied in the field of telephoto infrared synchronous imaging lens, can solve the problems that the visible spectrum and infrared spectrum cannot be confocal, and achieve the effects of reducing the tolerance sensitivity of the system, smoothing the light trend, and realizing distortion

Pending Publication Date: 2021-01-29
舜宇光学(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above problems, provide a telephoto infrared synchronous imaging lens, and solve the problem that the existing lens cannot achieve confocality of the visible spectrum and the infrared spectrum

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0071] figure 1 It is a schematic diagram showing the structure of the telephoto infrared synchronous imaging lens according to Embodiment 1 of the present invention.

[0072] The following table 2 lists the relevant parameters of each lens of the present embodiment, including surface type, radius of curvature, thickness, refractive index of material, Abbe number:

[0073] Face number surface type radius of curvature thickness Refractive index Abbe number S1 sphere 39.63 3.01 1.80 41.02 S2 sphere 70.68 0.10 S3 sphere 23.83 4.80 1.83 37.22 S4 sphere 40.13 0.80 1.68 31.16 S5 sphere 17.82 8.01 S6 sphere -47.02 0.90 1.71 29.50 S7 sphere 20.73 7.57 1.84 23.78 S8 sphere -57.44 1.94 S9(Stop) sphere Infinity 2.32 S10 sphere 90.47 9.14 1.61 55.77 S11 sphere -17.33 1.20 1.67 32.17 S12 sphere 15.70 7.89 1.61 55.77 S13 sphere -45.81 3...

Embodiment approach 2

[0078] Figure 6 It is a schematic diagram showing the structure of the telephoto infrared simultaneous imaging lens according to Embodiment 2 of the present invention.

[0079] The following table 3 lists the relevant parameters of each lens of this embodiment, including surface type, radius of curvature, thickness, refractive index of material, Abbe number:

[0080] Face number surface type radius of curvature thickness Refractive index Abbe number S1 sphere 40.68 2.88 1.85 23.80 S2 sphere 96.16 0.10 S3 sphere 31.64 5.55 1.75 51.20 S4 sphere 1288.01 1.52 S5 sphere -400.58 0.80 1.67 34.20 S6 sphere 20.00 5.85 S7 sphere -42.81 0.8 1.68 31.16 S8 sphere 49.47 3.08 1.8 22.70 S9 sphere -160.97 5.14 S10 (Stop) sphere Infinity 2.24 S11 sphere 60.45 8.37 1.61 63.39 S12 sphere -30.46 0.80 1.68 31.16 S13 sphere 16.08 7.17 1.61 ...

Embodiment approach 3

[0085] Figure 11 It is a schematic diagram showing the structure of the telephoto infrared synchronous imaging lens according to Embodiment 3 of the present invention.

[0086] The following table 4 lists the relevant parameters of each lens of this embodiment, including surface type, radius of curvature, thickness, refractive index of material, Abbe number:

[0087] Face number surface type radius of curvature thickness Refractive index Abbe number S1 sphere 40.00 3.35 1.80 41.02 S2 sphere 90.02 0.10 S3 sphere 23.49 3.20 1.83 42.74 S4 sphere 25.63 1.60 S5 sphere 45.81 0.80 1.64 33.84 S6 sphere 17.70 7.98 S7 sphere -30.07 0.80 1.66 33.05 S8 sphere 29.01 6.55 1.80 25.46 S9 sphere -42.06 1.95 S10 (Stop) sphere Infinity 2.00 S11 sphere 90.05 7.00 1.60 65.47 S12 sphere -17.43 0.80 1.69 30.05 S13 sphere 16.55 8.36 1.60 65....

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Abstract

The invention relates to a long-focus infrared synchronous imaging lens which sequentially comprises a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5), adiaphragm, a sixth lens (L6), a seventh lens (L7), an eighth lens (L8), a ninth lens (L9), a tenth lens (L10), an eleventh lens (L11) and a twelfth lens (L12) from the object side to the image side along an optical axis. The first lens (L1), the second lens (L2), the fifth lens (L5), the sixth lens (L6) and the eighth lens (L8) are positive focal power lenses; and the third lens (L3), the fourth lens (L4) and the seventh lens (L7) are negative focal power lenses. The long-focus infrared synchronous imaging lens can realize confocal visible light and infrared light, has excellent performances of a large aperture (FNO is less than or equal to 1.6) and a large target surface (half-image height IH is more than or equal to 7.8 mm), and does not have virtual focus in a temperature range of -40 DEG C to +85 DEG C.

Description

technical field [0001] The invention relates to the technical field of optical system and device design, in particular to a telephoto infrared synchronous imaging lens. Background technique [0002] Intelligent traffic monitoring lens is a high-end application scene optical device, which is crucial to establishing a traffic safety system. Most of the existing intelligent traffic monitoring lenses can only image the visible spectrum, and at night, they need to be equipped with supplementary light equipment to carry out video recording. If the supplementary light equipment is bright, it is easy to cause the driver's eyes to be dizzy. Contents of the invention [0003] The purpose of the present invention is to solve the above problems, and provide a telephoto infrared synchronous imaging lens, which solves the problem that the existing lens cannot achieve confocality of the visible spectrum and the infrared spectrum. [0004] To achieve the above object of the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/14
CPCG02B13/006G02B13/14
Inventor 韦晓鹏张国鹏梁伟朝
Owner 舜宇光学(中山)有限公司
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