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Optical imaging compound lens

An optical imaging lens and lens technology, applied in the field of lenses, can solve the problems of inability to adapt to the miniaturization trend of night vision devices, inability to guarantee imaging brightness, large changes in back focus, etc. big face effect

Pending Publication Date: 2020-12-29
XIAMEN LEADING OPTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are still many shortcomings in the optical imaging lenses used for night vision sports cameras on the market, such as most of them are large in size and heavy in weight, and cannot adapt to the current trend of miniaturization of night vision devices; they only meet the infrared night vision effect and visible light imaging The quality is poor; the clear aperture is generally small, and sufficient imaging brightness cannot be guaranteed in low-light conditions; use in an environment with a high temperature of 85°C to a low temperature of 40°C will cause large changes in the back focus and affect the imaging quality, etc. , has been unable to meet the increasing requirements of consumers, and urgently needs to be improved

Method used

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  • Optical imaging compound lens
  • Optical imaging compound lens
  • Optical imaging compound lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Such as figure 1As shown, an optical imaging lens includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, and a first lens along an optical axis I from the object side A1 to the image side A2. Six lenses 6, diaphragm 120, seventh lens 7, eighth lens 8, ninth lens 9, tenth lens 100, eleventh lens 110, protective glass 130 and imaging surface 140; the first lenses 1 to tenth Each of the lenses 110 includes an object side facing the object side A1 and allowing the imaging light to pass therethrough, and an image side facing the image side A2 and allowing the imaging light to pass therethrough.

[0099] The first lens 1 has a 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.

[0100] 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.

[0101] The third ...

Embodiment 2

[0134] 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.

[0135] The detailed optical data of this specific embodiment are shown in Table 2-1.

[0136] Detailed optical data of Table 2-1 Example 2

[0137]

[0138]

[0139] Please refer to the following table for the detailed data of the parameters of each aspheric surface in this specific embodiment:

[0140] surface K a 4

a 6

a 8

a 10

a 12

111 2.98 -5.970E-06 4.996E-06 -2.213E-07 4.786E-09 -4.216E-11 112 -183.40 -3.456E-04 1.916E-05 -5.692E-07 9.683E-09 -7.056E-11

[0141] Please refer to Table 7 for the value of the relevant conditional expression in this specific embodiment.

[0142] The MTF transfer function curve figure of this s...

Embodiment 3

[0146] 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.

[0147] The detailed optical data of this specific embodiment are shown in Table 3-1.

[0148] Detailed optical data of the third embodiment of table 3-1

[0149]

[0150] Please refer to the following table for the detailed data of the parameters of each aspheric surface in this specific embodiment:

[0151] surface K a 4

a 6

a 8

a 10

a 12

111 -4.38 5.626E-05 2.013E-06 -4.939E-08 8.231E-10 -8.003E-12 112 -90.42 -1.172E-04 4.902E-06 -7.866E-08 1.038E-09 -9.173E-12

[0152] Please refer to Table 7 for the value of the relevant conditional expression in this specific embodiment.

[0153] The MTF transfer function curve figure of this...

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PUM

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Abstract

The invention relates to the technical field of compound lenses. The invention discloses an optical imaging compound lens. The optical imaging compound lens comprises eleven lenses, wherein the firstlens is a convex-concave lens with a negative refractive index, the second lens, the sixth lens, the eighth lens and the tenth lens are concave-concave lenses with negative refractive indexes, the third lens, the fourth lens, the fifth lens, the seventh lens, the ninth lens and the eleventh lens are convex-convex lenses with positive refractive indexes, the eleventh lens is an aspheric lens, the second lens and the third lens are glued to each other, the fifth lens and the sixth lens are glued to each other, the seventh lens and the eighth lens are glued to each other, and the ninth lens and the tenth lens are glued to each other. The optical imaging compound lens has the advantages of being short in total length, small in size, high in resolution, good in imaging quality, high in light transmission, suitable for a wide spectrum of 435 nm to 1000 nm, and good in athermalization.

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] 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 smartphones, tablet computers, video conferencing, vehicle monitoring, drone aerial photography, In various fields such as machine vision and security monitoring, the requirements for optical imaging lenses are getting higher and higher. [0003] However, there are still many shortcomings in the optical imaging lenses used for night vision sports cameras on the market, such as most of them are large in size and heavy in weight, and cannot adapt to the current trend of miniaturization of night vision devices; they only meet the infrared night vision effect and visible light imaging The quality is poor; the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/14
CPCG02B13/18G02B13/14G02B13/146
Inventor 潘锐乔曹来书苏炳坤
Owner XIAMEN LEADING OPTICS