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an infrared lens

An infrared lens and lens technology, applied in the field of infrared lens, can solve the problems of increased production cost, heavy lens size, and reduced imaging quality, and achieve the effects of low production cost, clear infrared imaging, and good imaging quality

Active Publication Date: 2022-03-18
广东省星聚宇光学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In related technologies, in order to obtain better imaging quality, traditional lenses mounted on mobile phone cameras, TVs, and somatosensory game consoles mostly use multi-piece lens structures. Increased cost and reduced image quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Refer to the following Figure 1 to Figure 4 , to describe the infrared lens according to Embodiment 1 of the present invention. figure 1 A schematic structural diagram of an infrared lens according to Embodiment 1 of the present invention is shown.

[0073] Such as figure 1 As shown, the infrared lens includes five lenses L1-L5 in sequence from the object side to the image side along the optical axis. The first lens L1 has an object side S1 and an image side S2; the second lens L2 has an object side S3 and an image side S4; The third lens L3 has an object side S5 and an image side S6; the fourth lens L4 has an object side S7 and an image side S8; the fifth lens L5 has an object side S9 and an image side S10. Optionally, the infrared lens may further include a filter L6 having an object side S11 and an image side S12, and the filter L6 may be a bandpass filter. In the infrared lens of this embodiment, an aperture STO may also be provided to adjust the amount of incom...

Embodiment 2

[0089] Refer to the following Figure 5 to Figure 8 , to describe the infrared lens according to Embodiment 2 of the present invention. Figure 5 A schematic structural diagram of an infrared lens according to Embodiment 2 of the present invention is shown.

[0090] Such as Figure 5 As shown, the infrared lens includes five lenses L1-L5 in sequence from the object side to the image side along the optical axis. The first lens L1 has an object side S1 and an image side S2; the second lens L2 has an object side S3 and an image side S4; The third lens L3 has an object side S5 and an image side S6; the fourth lens L4 has an object side S7 and an image side S8; the fifth lens L5 has an object side S9 and an image side S10. Optionally, the infrared lens may further include a filter L6 having an object side S11 and an image side S12, and the filter L6 may be a bandpass filter. In the infrared lens of this embodiment, an aperture STO may also be provided to adjust the amount of inc...

Embodiment 3

[0105] Refer to the following Figure 9 to Figure 12 , describes the infrared lens according to Embodiment 3 of the present invention. Figure 9 A schematic structural diagram of an infrared lens according to Embodiment 3 of the present invention is shown.

[0106] Such as Figure 9 As shown, the infrared lens includes five lenses L1-L5 in sequence from the object side to the image side along the optical axis. The first lens L1 has an object side S1 and an image side S2; the second lens L2 has an object side S3 and an image side S4; The third lens L3 has an object side S5 and an image side S6; the fourth lens L4 has an object side S7 and an image side S8; the fifth lens L5 has an object side S9 and an image side S10. Optionally, the infrared lens may further include a filter L6 having an object side S11 and an image side S12, and the filter L6 may be a bandpass filter. In the infrared lens of this embodiment, an aperture STO may also be provided to adjust the amount of inco...

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PUM

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Abstract

The present invention provides an infrared lens. The infrared lens includes: a first lens, a second lens, a third lens, a fourth lens and a fifth lens; the object-side surface of the second lens is a convex surface; the The object-side surface of the third lens is a convex surface; the object-side surface of the fourth lens is a convex surface; the object-side surface of the fifth lens is convex at the near optical axis, and the object-side surface of the fifth lens is at a distance from There is at least one concave critical point at the optical axis; the sum of the central thicknesses of the first lens to the fifth lens on the optical axis is ΣCT, and the maximum distance from the object side of the first lens to the image side of the fifth lens is Td , and satisfy the following relationship: 0.71<∑CT / Td<0.74. The invention has the beneficial effects of: realizing infrared imaging and depth perception while ensuring a compact structure, and having the advantages of better imaging quality and lower production cost; the infrared imaging is clearer and less disturbed by visible light.

Description

【Technical field】 [0001] The invention relates to the technical field of optical lenses, in particular to an infrared lens. 【Background technique】 [0002] In recent years, with the rise of smart phones, the demand for miniaturized photographic lenses has been increasing, and the photosensitive devices of general photographic lenses are nothing more than photocoupled devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal -OxideSemiconductor Sensor, CMOS Sensor), and due to the improvement of semiconductor manufacturing process technology, the pixel size of photosensitive devices has been reduced, and today's electronic products are developing with good functions and thin, light and small appearance. Therefore, it has good The miniaturized infrared lens with imaging quality has become the mainstream in the market. [0003] In related technologies, in order to obtain better imaging quality, traditional lenses mounted on mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/14G02B13/18
CPCG02B13/0015G02B13/0045G02B13/008
Inventor 孙加安王锋周明明马庆鸿万良伟
Owner 广东省星聚宇光学股份有限公司