Pressure-relief sealed infrared lens and manufacturing method thereof
An infrared lens and decompression technology, applied in installation, optics, instruments, etc., can solve the problem that infrared lens cannot satisfy the pressure of sealing lens at the same time, and achieve the effect of high reliability, elimination of pressure, and simple overall structure
Pending Publication Date: 2021-02-23
11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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[0003] The embodiment of the present invention provides a pressure-reducing and sealed infrared lens and its manufacturing method, which is used to solve the problem that the infrared lens in the prior art cannot satisfy the sealing and eliminate the pressure of the lens at the same time
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[0042] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0043] like figure 1 As shown, according to the embodiment of the present invention, the decompression sealed infrared lens 1 includes:
[0044] Lens barrel 10, the axial ends of the lens barrel 10 are open;
[0045] The first optical lens 20 is arranged in the lens barrel 10 and coaxially arranged with the lens barrel 10;
[0046] The second optical lens 30 is located in the lens barrel 10 and coaxially arranged with the lens barrel 10, the ...
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The invention discloses a pressure-relief sealed infrared lens and a manufacturing method thereof. The pressure-relief sealed infrared lens comprises a lens cone, a first optical lens and a second optical lens, wherein two axial ends of the lens cone are open; the first optical lens is arranged in the lens cone and is coaxial with the lens cone; the second optical lens is arranged in the lens coneand is coaxial with the lens cone, the second optical lens and the first optical lens are arranged at an interval, and the first optical lens, the second optical lens and the lens cone located between the first optical lens and the second optical lens form a sealed space; and the peripheral wall of the lens barrel is provided with a communication channel, one end of the communication channel communicates with the sealed space, and the other end of the communication channel communicates with the open end of the other end of the lens barrel. According to the pressure-relief sealed infrared lens, on the premise that the infrared lens is fully sealed, the pressure between the optical lenses can be eliminated, the phenomena that the imaging quality is influenced and even the lenses fall off due to the surface type change of the lenses caused by overlarge pressure between the lenses are prevented, the structure is simple, the reliability is high, and the universality is high.
Description
technical field [0001] The invention relates to the field of optics and mechanics, in particular to a depressurization-sealed infrared lens and a manufacturing method thereof. Background technique [0002] Infrared lenses are an important part of thermal imaging cameras. Among the conventional infrared lenses, most of the infrared lenses that do not use sealing glue are installed in the pod or the shell, and the window protection of the pod and the shell is used to ensure the sealing environment of the infrared lens. Such products have strict requirements on the installation environment, and the increased Windows also reduce optical transmission. Although the infrared lens with sealing glue meets the sealing requirements, it does not take into account the influence of pressure on the surface shape of the lens during lens assembly. At the same time, after the lenses are sealed, the lenses are in a sealed state. When the infrared thermal imager is working, affected by the te...
Claims
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IPC IPC(8): G02B7/02
CPCG02B7/021G02B7/025
Inventor 徐明轩张晓亮石彰温庆荣贺媛
Owner 11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP