CN214122539U - Pressure-relief sealed infrared lens - Google Patents
Pressure-relief sealed infrared lens Download PDFInfo
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- CN214122539U CN214122539U CN202022623765.4U CN202022623765U CN214122539U CN 214122539 U CN214122539 U CN 214122539U CN 202022623765 U CN202022623765 U CN 202022623765U CN 214122539 U CN214122539 U CN 214122539U
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Abstract
The utility model discloses a pressure relief seals infrared camera lens. The sealed infrared camera lens of decompression includes: the lens barrel is open at two axial ends; the first optical lens is arranged in the lens barrel and is coaxial with the lens barrel; the second optical lens is arranged in the lens barrel and is coaxial with the lens barrel, the second optical lens and the first optical lens are arranged at intervals, and the first optical lens, the second optical lens and the lens barrel structure positioned between the first optical lens and the second optical lens form a sealed space; the peripheral wall of the lens cone is provided with a communication channel, one end of the communication channel is communicated with the sealed space, and the other end of the communication channel is communicated with the open end at the other end of the lens cone. Adopt the utility model discloses, can satisfy under the infrared camera lens hermetically-sealed prerequisite, eliminate the pressure between the optical lens piece, prevent because of the phenomenon that the lens face type change and then influence imaging quality, lens deviate from even that pressure is too big between the lens, simple structure, reliability height, and the commonality is strong.
Description
Technical Field
The utility model relates to an ray apparatus field especially relates to a pressure relief seal infrared camera lens.
Background
The infrared lens is an important component of the thermal infrared imager. In the conventional infrared lens, most of the infrared lenses without glue sealing are installed in the pod or the shell, the sealing environment of the infrared lenses is ensured through the protection of windows of the pod and the shell, the installation environment of the infrared lenses is strictly required by the products, and the optical transmittance is reduced by the added windows. The infrared lens adopting the sealing glue meets the sealing requirement, but the influence of the pressure on the surface type of the lens during the lens assembly is not considered. Meanwhile, after the lenses are sealed by glue, the lenses are in a closed state, when the thermal infrared imager works, the lenses are influenced by the temperature of a working environment and the temperature inside the thermal infrared imager, and the air pressure between the lenses is increased to extrude the lenses, so that the surface shape of the lenses is possibly changed, the imaging quality is influenced, and even the lenses are separated. In order to meet the assembly process of the lens and the use requirements of the infrared thermal instrument under different environments, the design of the infrared lens must consider the sealing performance and eliminate the pressure of the lens at the same time.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a pressure relief seal infrared camera lens for solve prior art intermediate infrared camera lens can't satisfy the leakproofness simultaneously and eliminate the problem of lens pressure.
According to the utility model discloses eliminate pressure and seal infrared camera lens, include:
the lens barrel is open at two axial ends;
the first optical lens is arranged in the lens barrel and is coaxial with the lens barrel;
the second optical lens is arranged in the lens barrel and is coaxial with the lens barrel, the second optical lens and the first optical lens are arranged at intervals, and the first optical lens, the second optical lens and the lens barrel structure positioned between the first optical lens and the second optical lens form a sealed space;
and a communication channel is arranged on the peripheral wall of the lens cone, one end of the communication channel is communicated with the sealed space, and the other end of the communication channel is communicated with the open end at the other end of the lens cone.
According to some embodiments of the invention, the lens barrel comprises a tapered section, the aperture of the tapered section gradually decreasing in a direction from one end of the tapered section to the other end;
the first optical lens, the second optical lens, and the necked-down section are configured to form a sealed space.
According to some embodiments of the invention, the communication channel comprises:
the first communication section extends along the axial direction of the lens cone, and one end of the first communication section penetrates through the inner wall surface of the necking section and is communicated with the sealed space;
the second communicating section extends along the radial direction of the lens cone, the other end of the first communicating section extends to the second communicating section and is communicated with the second communicating section, and the other end of the second communicating section penetrates through the inner wall surface of one end of the lens cone and is communicated with the open end of the other end of the lens cone.
According to some embodiments of the invention, the other end of the first communicating section is connected and communicates with one end of the second communicating section.
According to some embodiments of the present invention, the second communicating section penetrates through a peripheral wall of the lens barrel, and the other end of the first communicating section extends to and communicates with a middle section of the second communicating section;
and a sealing screw is arranged at one end of the radial outer side of the lens barrel on the second communication section and used for sealing the open hole of the second communication section.
According to some embodiments of the utility model, sealing screw with still be equipped with sealing rubber pad between the opening of second intercommunication section.
According to the utility model discloses a some embodiments, the lens cone includes first section and second section, the axial one end of first section with the axial one end sealing connection of second section, the aperture of first section is greater than the aperture of second section, the throat section is located the second section is close to the one end of first section.
According to some embodiments of the present invention, the outer circumferential wall of the first optical lens is connected to the inner circumferential wall of the lens barrel by a first sealant;
the outer peripheral wall of the second optical lens is connected with the inner peripheral wall of the lens barrel in a sealing mode through second sealant.
According to some embodiments of the utility model, the infrared camera lens of pressure relief seal still includes: a first clamping ring for fixing the first optical lens and a second clamping ring for fixing the second optical lens.
Adopt the embodiment of the utility model provides a, can be satisfying under the infrared camera lens totally enclosed prerequisite, eliminate the pressure between the optical lens piece, prevent to lead to the lens face type to change and then influence the phenomenon that imaging quality, lens deviate from even because of pressure is too big between the lens, the utility model discloses a eliminate pressure and seal infrared camera lens overall structure is simple, the reliability is high, and the commonality is strong.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:
FIG. 1 is a schematic view of a pressure-relief sealed infrared lens structure according to an embodiment of the present invention;
fig. 2 is a flow chart of a manufacturing method of the pressure-relief sealed infrared lens in the embodiment of the present invention.
Reference numerals:
the pressure-relief sealed infrared lens 1 is provided,
the lens barrel 10, the first section 110, the second section 120, the throat section 121, the communication channel 130, the first communication section 131, the second communication section 132,
the first optical lens 20 is provided with a first optical lens,
the first sealant 21 is applied to the first surface of the substrate,
the first pressing ring (22) is provided with a pressing ring,
a second optical lens 30 for a second optical lens,
a second sealing compound (31) is applied,
the second pressure ring 32 is provided with a second pressure ring,
the sealed space (a) is sealed,
sealing screw 40, sealing rubber pad 41.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, according to the utility model discloses a decompression seals infrared lens 1, include:
a lens barrel 10, both axial ends of the lens barrel 10 being open;
a first optical lens 20 disposed in the lens barrel 10 and coaxial with the lens barrel 10;
the second optical lens 30 is arranged in the lens barrel 10 and is coaxially arranged with the lens barrel 10, the second optical lens 30 and the first optical lens 20 are arranged at intervals, and the first optical lens 20, the second optical lens 30 and the lens barrel 10 positioned between the first optical lens 20 and the second optical lens 30 form a sealed space a in a structure;
the peripheral wall of the lens barrel 10 is provided with a communication passage 130, one end of the communication passage 130 communicates with the sealed space a, and the other end of the communication passage 130 communicates with the open end of the other end of the lens barrel 10. Thereby, the sealed space a can be in spatial communication with the lens barrel 10 outside the sealed space a through the communication passage 130.
Adopt the embodiment of the utility model provides a, can be satisfying under the infrared camera lens totally enclosed prerequisite, eliminate the pressure between the optical lens piece, prevent to lead to the lens face type to change and then influence the phenomenon that imaging quality, lens deviate from even because of pressure is too big between the lens, the utility model discloses a 1 overall structure of decompression sealed infrared camera lens of 1 is simple, the reliability is high, and the commonality is strong.
On the basis of the above-described embodiment, various modified embodiments are further proposed, and it is to be noted herein that, in order to make the description brief, only the differences from the above-described embodiment are described in the various modified embodiments.
As shown in fig. 1, according to some embodiments of the present invention, the lens barrel 10 includes a throat section 121, and an aperture of the throat section 121 is gradually reduced from one end of the throat section 121 to the other end;
the first optical lens 20, the second optical lens 30, and the converging section 121 are configured to form a sealed space a. Thereby, the manufacture of the communication passage 130 can be facilitated.
As shown in fig. 1, according to some embodiments of the present invention, the communication channel 130 includes:
a first communicating section 131 extending in the axial direction of the lens barrel 10, one end of the first communicating section 131 penetrating the inner wall surface of the throat section 121 and communicating with the sealed space a;
the second communicating section 132 extends along the radial direction of the lens barrel 10, the other end of the first communicating section 131 extends to the second communicating section 132 and is communicated with the second communicating section 132, and the other end of the second communicating section 132 penetrates through the inner wall surface of one end of the lens barrel 10 and is communicated with the open end of the other end of the lens barrel 10.
According to some embodiments of the present invention, the other end of the first communicating section 131 is connected and communicates with one end of the second communicating section 132.
As shown in fig. 1, according to some embodiments of the present invention, the second communicating section 132 penetrates through the peripheral wall of the lens barrel 10, and the other end of the first communicating section 131 extends to and communicates with the middle section of the second communicating section 132. Thereby, the second communicating section 132 is prepared from the outside of the lens barrel 10, so that the preparation of the second communicating section 132 can be facilitated.
At one end of the lens barrel 10 in the radial direction, the second communicating section 132 is provided with a sealing screw 40, and the sealing screw 40 is used for sealing the opening of the second communicating section 132. Therefore, the opening of the second communicating section 132 can be shielded by the sealing screw 40, so that dust, impurities and water are prevented from entering the lens barrel 10, and the sealing performance of the lens barrel 10 can be guaranteed.
As shown in fig. 1, according to some embodiments of the present invention, a sealing rubber pad 41 is further disposed between the sealing screw 40 and the opening of the second communicating section 132. This can further improve the sealing effect of the seal screw 40.
As shown in fig. 1, according to some embodiments of the present invention, the lens barrel 10 includes a first section 110 and a second section 120, an axial end of the first section 110 is hermetically connected to an axial end of the second section 120, an aperture of the first section 110 is larger than an aperture of the second section 120, and a necking section 121 is disposed at an end of the second section 120 close to the first section 110. The first and second segments 110 and 120 may be configured to form a step, and the first optical lens 20 may be mounted at the step, so that the mounting stability of the first optical lens 20 may be improved.
As shown in fig. 1, according to some embodiments of the present invention, the outer peripheral wall of the first optical lens 20 is hermetically connected to the inner peripheral wall of the lens barrel 10 by a first sealant 21;
the outer peripheral wall of the second optical lens 30 is hermetically connected to the inner peripheral wall of the lens barrel 10 by a second sealant 31.
As shown in fig. 1, according to some embodiments of the present invention, the decompression sealing infrared lens 1 further includes: a first clamping ring 22 for holding the first optical lens 20, and a second clamping ring 32 for holding the second optical lens 30. The first pressing ring 22 is embedded in the lens barrel 10 and abuts against the first optical lens 20. The second pressing ring 32 is embedded in the lens barrel 10 and abuts against the second optical lens 30.
As shown in fig. 2, the manufacturing method of the above-mentioned decompression sealing infrared lens according to the embodiment of the present invention includes:
s1, manufacturing a lens barrel;
s2, the second optical lens is arranged in the lens cone, and the optical decentration detector is used for adjusting the second optical lens so as to enable the second optical lens to be coaxial with the lens cone;
s3, the first optical lens is arranged in the lens barrel, and the optical decentration detector is used for adjusting the first optical lens so that the first optical lens and the lens barrel are coaxial.
Adopt the embodiment of the utility model provides a, can be satisfying under the infrared camera lens totally enclosed prerequisite, eliminate the pressure between the optical lens piece, prevent to lead to the lens face type to change and then influence the phenomenon that imaging quality, lens deviate from even because of pressure is too big between the lens, the utility model discloses a eliminate pressure and seal infrared camera lens overall structure is simple, the reliability is high, and the commonality is strong.
The decompression-sealed infrared lens 1 according to an embodiment of the present invention is described in detail below with reference to fig. 1 as a specific embodiment. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention. All adopt the utility model discloses a similar structure and similar change all should be listed in the protection scope of the utility model.
As shown in fig. 1, according to the utility model discloses a decompression seals infrared lens 1, include: the lens barrel 10, the first optical lens 20, the first pressing ring 22, the second optical lens 30, the second pressing ring 32, the sealing screw 40, and the sealing rubber pad 41.
The lens barrel 10 is open at both axial ends. The lens barrel 10 comprises a first section 110 and a second section 120, wherein one axial end of the first section 110 is hermetically connected with one axial end of the second section 120, and the aperture of the first section 110 is larger than that of the second section 120. The end of the second section 120 near the first section 110 is a necked-down section 121. The aperture of the throat section 121 gradually decreases in a direction from one end to the other end of the throat section 121.
The first optical lens 20 is disposed in the lens barrel 10. The outer peripheral wall of the first optical lens 20 is hermetically connected to the inner peripheral wall of the lens barrel 10 by a first sealant 21. The second optical lens 30 is disposed in the lens barrel 10. The outer peripheral wall of the second optical lens 30 is hermetically connected to the inner peripheral wall of the lens barrel 10 by a second sealant 31. The first optical lens 20 and the second optical lens 30 are both disposed coaxially with the lens barrel 10.
The second optical lens 30 is spaced apart from the first optical lens 20, the second optical lens 30 and the first optical lens 20 are located at two ends of the throat section 121, and the first optical lens 20, the second optical lens 30 and the throat section 121 form a sealed space a.
The peripheral wall of the lens barrel 10 is provided with a communication passage 130. The communication passage 130 includes a first communication section 131 and a second communication section 132. The first communicating section 131 extends in the axial direction of the lens barrel 10, and one end of the first communicating section 131 penetrates the inner wall surface of the throat section 121 to communicate with the sealed space a. The second communicating section 132 extends in the radial direction of the lens barrel 10. The second communicating section 132 penetrates the peripheral wall of the lens barrel 10, and the other end of the first communicating section 131 extends to and communicates with the middle section of the second communicating section 132. The other end of the second communicating section 132 penetrates the inner wall surface of one end of the lens barrel 10 and communicates with the open end of the other end of the lens barrel 10.
At one end of the lens barrel 10 in the radial direction, the second communicating section 132 is provided with a sealing screw 40, and the sealing screw 40 is used for sealing the opening of the second communicating section 132. Therefore, the opening of the second communicating section 132 can be shielded by the sealing screw 40, so that dust, impurities and water are prevented from entering the lens barrel 10, and the sealing performance of the lens barrel 10 can be guaranteed. A sealing rubber pad 41 is also arranged between the sealing screw 40 and the opening of the second communication section 132. This can further improve the sealing effect of the seal screw 40.
The first pressing ring 22 is embedded in the lens barrel 10 and abuts against the first optical lens 20. The second pressing ring 32 is embedded in the lens barrel 10 and abuts against the second optical lens 30.
The utility model discloses preparation method of decompression sealed infrared camera lens includes following step:
1. the second optical lens 30 is arranged in the lens barrel 10, and the second optical lens 30 and the lens barrel 10 are coaxially arranged and adjusted by an optical decentration detector;
2. pouring a second sealant 31 between the second optical lens 30 and the lens cone 10, in order to ensure the uniformity of the sealant and reduce the influence of the sealant layer on the lens, the designed width of the gap between the second optical lens 30 and the lens cone 10 is 2mm, the sealant is applied layer by layer according to the thickness of the second optical lens 30, each layer is about 2mm to 3mm, the next layer can be sealed after each layer is cured at normal temperature for 24 hours after the sealant is applied, and the second sealant 31 is black 703 silicon rubber;
3. after the second optical lens 30 is sealed, the second pressing ring 32 is arranged in the lens barrel 10 and is firmly fixed;
4. the first optical lens 20 is arranged in the lens barrel 10, and the optical decentration detector is used for coaxially arranging the first optical lens 20 and the lens barrel 10;
5. pouring a first sealant 21 into a gap between the first optical lens 20 and the lens cone 10, wherein in order to ensure the uniformity of the sealant and reduce the influence of a glue layer on the lens, the designed width of the gap between the first optical lens 20 and the lens cone 10 is 2mm, the sealant is applied layer by layer according to the thickness of the first optical lens 20, each layer is about 2mm to 3mm, the next layer can be sealed after each layer is cured at normal temperature for 24 hours after the sealant is applied, and the first sealant 21 is black 703 silicon rubber;
6. after the first optical lens 20 is sealed, the first pressing ring 22 is arranged in the lens barrel 10 and is firmly fixed;
7. the sealing rubber pad 41 is arranged in the sealing screw 40 and then arranged in the second communication section 132 at the side of the lens barrel 10 together, and the tight fastening is realized.
After the thermal infrared imager provided with the sealed infrared lens is subjected to high-low temperature and rain environment tests, the lens surface type is not abnormal, the air pressure between the first optical lens 20 and the second optical lens 30 is consistent with the air pressure in the thermal infrared imager, and the phenomena of water leakage and the like do not occur. The tests prove that the design of the infrared lens with pressure relief seal can eliminate the pressure between lenses and meet the sealing requirement, and the design has universality.
Adopt above-mentioned technical scheme, the utility model discloses at least, following advantage has:
1. the utility model has simple structure, high reliability and strong universality;
2. the utility model discloses satisfy under the sealed prerequisite of camera lens, eliminate the pressure between the optical lens piece, prevent that pressure too big leads to lens face type change and then influence the imaging quality between the lens in lens assembling process, prevent at infrared equipment during operation, air between the lens receives temperature influence pressure increase extrusion lens and then causes the lens face type to change and influence the imaging quality and even the lens phenomenon such as deviate from.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and those skilled in the art can make various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the description herein, references to the description of "some embodiments" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. The particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. For example, in the claims, any of the claimed embodiments may be used in any combination.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (9)
1. An infrared lens of pressure relief seal, comprising:
the lens barrel is open at two axial ends;
the first optical lens is arranged in the lens barrel and is coaxial with the lens barrel;
the second optical lens is arranged in the lens barrel and is coaxial with the lens barrel, the second optical lens and the first optical lens are arranged at intervals, and the first optical lens, the second optical lens and the lens barrel structure positioned between the first optical lens and the second optical lens form a sealed space;
and a communication channel is arranged on the peripheral wall of the lens cone, one end of the communication channel is communicated with the sealed space, and the other end of the communication channel is communicated with the open end at the other end of the lens cone.
2. The pressure-relief sealed infrared lens of claim 1, wherein the lens barrel includes a constricted section, an aperture of which is gradually reduced in a direction from one end to the other end of the constricted section;
the first optical lens, the second optical lens, and the necked-down section are configured to form a sealed space.
3. The pressure-relief sealed infrared lens of claim 2, wherein the communication channel comprises:
the first communication section extends along the axial direction of the lens cone, and one end of the first communication section penetrates through the inner wall surface of the necking section and is communicated with the sealed space;
the second communicating section extends along the radial direction of the lens cone, the other end of the first communicating section extends to the second communicating section and is communicated with the second communicating section, and the other end of the second communicating section penetrates through the inner wall surface of one end of the lens cone and is communicated with the open end of the other end of the lens cone.
4. The pressure-relief sealed infrared lens as claimed in claim 3, wherein the other end of the first communicating section is connected to and communicates with one end of the second communicating section.
5. The pressure-relief sealed infrared lens according to claim 3, wherein the second communicating section penetrates through a peripheral wall of the lens barrel, and the other end of the first communicating section extends to and communicates with a middle section of the second communicating section;
and a sealing screw is arranged at one end of the radial outer side of the lens barrel on the second communication section and used for sealing the open hole of the second communication section.
6. The pressure-relief sealed infrared lens as claimed in claim 5, wherein a sealing rubber gasket is further provided between the sealing screw and the opening of the second communicating section.
7. The pressure-relief sealed infrared lens of claim 2, wherein the lens barrel comprises a first section and a second section, an axial end of the first section is hermetically connected with an axial end of the second section, an aperture of the first section is larger than an aperture of the second section, and the necking section is disposed at an end of the second section close to the first section.
8. The pressure-relief sealed infrared lens barrel according to claim 1, wherein the outer peripheral wall of the first optical lens is connected with the inner peripheral wall of the lens barrel in a sealing manner by a first sealant;
the outer peripheral wall of the second optical lens is connected with the inner peripheral wall of the lens barrel in a sealing mode through second sealant.
9. The pressure-relief sealed infrared lens of claim 1, further comprising: a first clamping ring for fixing the first optical lens and a second clamping ring for fixing the second optical lens.
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CN202022623765.4U CN214122539U (en) | 2020-11-13 | 2020-11-13 | Pressure-relief sealed infrared lens |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112394468A (en) * | 2020-11-13 | 2021-02-23 | 中国电子科技集团公司第十一研究所 | Pressure-relief sealed infrared lens and manufacturing method thereof |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112394468A (en) * | 2020-11-13 | 2021-02-23 | 中国电子科技集团公司第十一研究所 | Pressure-relief sealed infrared lens and manufacturing method thereof |
CN112394468B (en) * | 2020-11-13 | 2024-06-14 | 中国电子科技集团公司第十一研究所 | Pressure-eliminating sealing infrared lens and manufacturing method thereof |
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