A transmissive, multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover

Abstract

This invention provides a non-magnetic, corrosion-resistant, multispectral, deep-diving, transmission-resistant window cover, comprising a high-pressure resistant housing, a first protective glass fixed to the upper side of one side of the high-pressure resistant housing, and a second protective glass fixed to the lower side. A temperature and humidity sensor is fixed inside the high-pressure resistant housing, which is used for mounting on optoelectronic equipment. An upper window and a lower window are provided on one side of the high-pressure resistant housing, with a first pressure frame and a second pressure frame fixed to the upper and lower windows respectively. The first and second protective glasses are fixed within their respective upper and lower windows via the first and second pressure frames. This invention solves the technical challenges of long focal length, lightweight integration of multispectral optical lenses, and reliable long-term underwater operation for optoelectronic equipment, greatly improving the efficiency and application range of optoelectronic equipment. It is easy to install and disassemble, has flexible mounting methods, strong pressure resistance, effectively protects internal equipment, extends service life, and can operate stably and reliably both above and below water. It can be widely used in various fields such as marine resource development and surface and underwater environmental monitoring.

Description

Technical Field

[0001] This utility model relates to the field of optoelectronic equipment technology, specifically to a transmission multispectral, deep-diving, non-magnetic, corrosion-resistant window cover. Background Technology

[0002] With the development of optoelectronic equipment technology, optoelectronic equipment combining infrared, visible light, and laser has been widely used. Especially in recent years, with increasing emphasis on ocean exploration, optoelectronic equipment has gradually expanded into underwater applications. To achieve ocean exploration, optical imaging systems and optical communication equipment require specialized optical domes. Existing optical domes primarily use a shared window for laser and visible light, and a separate window for infrared. These two windows are made of different materials and are arranged horizontally or vertically, although some use a single shared window. These structures have low integration levels and poor economic efficiency. Furthermore, the size of the dome limits the mounting of only medium- and short-focal-length optical lenses, thus affecting the extension of detection distance and reducing the detection and identification capabilities of optoelectronic equipment, hindering its further development. In addition, to adapt to the marine working environment and underwater pressure resistance requirements, commonly used dome shell materials include titanium alloys and duplex stainless steel. Titanium alloys are lightweight and resistant to seawater corrosion, but are expensive and have limited pressure resistance. Duplex stainless steel has high strength, but its processing is complex, and the material itself has a certain degree of magnetism, making it unsuitable for installing equipment or devices that require protection against magnetic interference, thus limiting its application range. Utility Model Content

[0003] The main objective of this invention is to provide a transmissive, multispectral, deep-diving, non-magnetic, corrosion-resistant window cover to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: it includes a high-pressure resistant housing, a first protective glass is fixedly provided on the upper side of one side of the high-pressure resistant housing, a second protective glass is fixedly provided on the lower side, a temperature and humidity sensor is fixedly provided inside the high-pressure resistant housing, and the high-pressure resistant housing is used to be installed on optoelectronic equipment. The high-pressure resistant housing has an upper window and a lower window on one side. A first pressure frame and a second pressure frame are fixed on the upper window and the lower window respectively. The first protective glass and the second protective glass are fixed in the corresponding upper window and lower window respectively through the first pressure frame and the second pressure frame.

[0005] Preferably, the inner end faces of the upper and lower windows are provided with V-shaped grooves, and the inner sides of the upper and lower windows are provided with clearance grooves. A first sealing buffer pad is provided between the inner end face of the first protective glass and the second protective glass and the inner end face of the upper window and the lower window, and the first sealing buffer pad abuts against the V-groove. A second sealing buffer pad is provided between the outer side of the first protective glass and the second protective glass and the inner wall of the upper window and the lower window. A third sealing buffer pad is provided between the first and second pressure frames and the upper and lower windows; A fourth sealing buffer pad is provided between the outer end faces of the first and second protective glass and the first and second pressure frames.

[0006] Preferably, the bottom of the first pressure frame is provided with a through first water guide groove, which is located on one side of the outer end face of the first protective glass; The bottom of the second pressure frame is provided with a through second water guide groove, which is located on one side of the outer end face of the second protective glass.

[0007] Preferably, the high-pressure resistant housing has an exhaust port and an air inlet on one side, and the exhaust port and air inlet are provided with threaded drying screws, and the drying screws are also provided with sealing rings; The bottom of the high-pressure resistant housing is provided with multiple threaded holes, which match the mounting holes on the optoelectronic equipment and are locked and sealed by bolts and sealing rings.

[0008] Preferably, the upper and lower windows form a 150° angle, and the upper and lower windows are respectively deflected by 4 degrees 20′ relative to the vertical plane of the system's view axis.

[0009] Preferably, the first and second protective glasses are made of sapphire, with an anti-reflective coating on their inner end face and a hydrophobic coating on their outer end face.

[0010] Preferably, the high-pressure resistant shell is internally reinforced with reinforcing ribs to enhance its pressure resistance.

[0011] Preferably, the high-pressure resistant shell is filled with dry nitrogen.

[0012] Preferably, the high-pressure resistant shell, the first pressure frame, and the second pressure frame are made of non-magnetic stainless steel.

[0013] This utility model provides a transmissive, multispectral, deep-diving, non-magnetic, corrosion-resistant window cover, with the following advantages: 1. This device is precisely designed, compact in structure, and has a high volumetric efficiency, which facilitates the integrated design of multispectral optical payloads. It solves the problem of miniaturized integrated design of infrared and visible long-focal-length lenses and laser ranging components, enabling all-weather, long-distance target observation and ranging, thus improving equipment efficiency. At the same time, the device has extremely high pressure resistance and corrosion resistance, solving the problem of reliable operation of optoelectronic equipment at great underwater depths for extended periods, and has passed experimental verification.

[0014] 2. The high-pressure resistant shell and protective glass frame are made of a new type of non-magnetic stainless steel, which has excellent mechanical properties, wear resistance, and seawater corrosion resistance. The material itself is non-magnetic and will not cause magnetic interference to internal equipment or the external environment. The main body of the high-pressure resistant shell is cylindrical in shape and has multiple curved, inclined, and conical surfaces. Under pressure, it can effectively disperse and absorb pressure, improve structural stability, and give the high-pressure resistant shell a higher load-bearing capacity, protecting internal equipment and extending its service life.

[0015] 3. The single protective glass is separated into two pieces, which is ingenious in its layout. Compared with the commonly used single protective glass structure, it is smaller in size and has a stronger pressure resistance. The two protective glass pieces form a spatial angle, which helps to eliminate stray light interference and improve image quality.

[0016] 4. Glass material has high mechanical strength, strong wear resistance, corrosion resistance and high light transmittance. It can transmit multiple spectra such as infrared, visible light and laser, which improves the compatibility and optical performance of the device, reduces the variety and number of optical parts, facilitates the simplification of structure and saves costs.

[0017] 5. The sealing method is simple and reliable. The upper and lower surfaces of the protective glass are equipped with high-elasticity sealing buffer pads at the contact points with the high-pressure resistant shell and the pressure frame, as well as around the perimeter. This prevents the glass from directly contacting the metal materials and isolates the glass from the impact of the high-pressure resistant shell's deformation under pressure. Compared with the O-ring structure, it has a larger contact area, better pressure resistance, and improved resistance to vibration and impact. It can also adapt to harsh high and low temperature working environments.

[0018] 6. Intelligent sensing of internal humidity changes, early prediction of malfunctions, prevention of abnormal situations such as water seepage and leakage, and better protection of internal equipment. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front sectional view of the overall structure of this utility model; Figure 2 This is a right view of the high-pressure resistant housing of this utility model; Figure 3 This is a front sectional view of the high-pressure resistant housing of this utility model; Figure 4 This is a partial orthographic sectional view of the upper and lower windows of this utility model; Figure 5 This is a schematic diagram showing the position of the protective glass in this utility model; Figure 6 This is a schematic diagram of the installation and use of this utility model; In the figure: High-pressure resistant housing 1; Upper window 101; Lower window 102; Exhaust port 103; Air inlet 104; Threaded hole 105; V-groove 106; Relief groove 107; First protective glass 2; Second protective glass 3; First pressure frame 4; First water guide groove 401; Second pressure frame 5; Second water guide groove 501; First sealing buffer pad 6; Second sealing buffer pad 7; Third sealing buffer pad 8; Fourth sealing buffer pad 9; Drying screw 10; Temperature and humidity sensor 11; Photoelectric device 12. Detailed Implementation

[0020] like Figures 1-6 As shown, a transmission multispectral deep-diving non-magnetic corrosion resistant window cover includes a high-pressure resistant housing 1, a first protective glass 2 is fixed on the upper side of one side of the high-pressure resistant housing 1, a second protective glass 3 is fixed on the lower side, a temperature and humidity sensor 11 is fixed inside the high-pressure resistant housing 1, and the high-pressure resistant housing 1 is used to be installed on an optoelectronic device 12. The high-pressure resistant housing 1 has an upper window 101 and a lower window 102 on one side. A first pressure frame 4 and a second pressure frame 5 are respectively fixed on the upper window 101 and the lower window 102. The first protective glass 2 and the second protective glass 3 are respectively fixed in the corresponding upper window 101 and lower window 102 through the first pressure frame 4 and the second pressure frame 5.

[0021] The high-pressure resistant housing 1 has a cylindrical shape with an outer contour featuring arc surfaces and bevels, which effectively disperse pressure and improve pressure resistance. The upper window 101 and lower window 102 form a 150° angle, which is 4°20′ off-center relative to the vertical plane of the system's viewing axis. This reduces the size of the protective glass, enhances the pressure-bearing capacity, expands the field of view, and eliminates stray light interference, thereby improving the system's imaging quality. The bottom of the high-pressure resistant housing 1 is provided with multiple threaded holes 105, which match the mounting holes on the optoelectronic device 12 and are locked and sealed by bolts and sealing rings to achieve rapid installation of the optoelectronic device 12.

[0022] The high-pressure resistant housing 1 has an exhaust port 103 and an air inlet 104 on one side. The exhaust port 103 and the air inlet 104 are equipped with threaded drying screws 10, and the drying screws 10 are also equipped with sealing rings. Nitrogen gas is filled into the high-pressure resistant housing 1 through the cooperation of the air inlet 104 and the air inlet 104 to protect the photoelectric equipment 12 from drying and improve its service life and effect.

[0023] Preferably, the high-pressure resistant shell 1 has internal reinforcing ribs to enhance its pressure resistance. This ensures pressure resistance while facilitating lightweight design.

[0024] Preferably, the first protective glass 2 and the second protective glass 3 are made of sapphire, which has high light transmittance, high mechanical strength, strong compressive strength, and good corrosion resistance. It can transmit infrared, visible light, and laser light, which is beneficial for the integrated design and application of multispectral optical components. The inner end face is coated with an anti-reflective film to enhance light transmission capability. The outer end face is coated with a hydrophobic film, which can be used in harsh environments such as rain and waves. The first protective glass 2 and the second protective glass 3 are rectangular in shape, with simple structure and easy processing. The four corners are rounded and the transition is curved to avoid stress concentration.

[0025] Preferably, the high-pressure resistant housing 1, the first pressure frame 4, and the second pressure frame 5 are made of non-magnetic stainless steel. The first pressure frame 4 and the second pressure frame 5 are connected to the high-pressure resistant housing 1 by screws to fix the first protective glass 2 and the second protective glass 3. The first water guide groove 401 and the second water guide groove 501 on the first pressure frame 4 and the second pressure frame 5 can prevent rainwater and waves from accumulating and obstructing the protective glass when used on water, thus affecting the observation effect of the photoelectric device 12. Preferably, the inner end faces of the upper window 101 and the lower window 102 are provided with V-shaped grooves 106, and the inner sides of the upper window 101 and the lower window 102 are provided with clearance grooves 107. A first sealing buffer pad 6 is provided between the inner end face of the first protective glass 2 and the second protective glass 3 and the inner end face of the upper window 101 and the lower window 102, and the first sealing buffer pad 6 abuts against the V-groove 106. A second sealing buffer pad 7 is provided between the outer side of the first protective glass 2 and the second protective glass 3 and the inner wall of the upper window 101 and the lower window 102; A third sealing buffer pad 8 is provided between the first pressure frame 4 and the second pressure frame 5 and the upper window 101 and the lower window 102; A fourth sealing buffer pad 9 is provided between the outer end faces of the first protective glass 2 and the second protective glass 3 and the first pressure frame 4 and the second pressure frame 5.

[0026] The V-groove 106 enhances the sealing capability, and the positioning groove 107 facilitates precision machining such as grinding and scraping of the sealing mating surface, improving processability, support safety and sealing reliability. The materials of each sealing buffer pad are made of highly elastic, wear-resistant and corrosion-resistant materials, which can effectively isolate the impact of the high-pressure shell 1 on the protective glass under pressure deformation, and play a good sealing and buffering role. The second sealing buffer pad 7 is set on the periphery of the first protective glass 2 and the second protective glass 3 to prevent the protective glass from breaking or cracking due to the high temperature expansion and compression of metal materials, external vibration and impact.

[0027] The above structure was analyzed using ANSYS finite element method. Under the set pressure, the safety factor of the protective glass reached 3.5, and the safety factor of the pressure-resistant shell reached 4.1. The strength of both structures met the design requirements and passed the test verification.

[0028] Inside the high-pressure resistant housing 1, a temperature and humidity sensor 11 is also provided to intelligently sense changes in internal humidity and provide early warning information.

[0029] Usage process: Connect this device to the optoelectronic equipment 12, locate the axis through the cylindrical surface of the bottom cavity of the high-pressure resistant housing 1, and then fix it with bolts to the threaded hole 105. Start the optoelectronic equipment 12 to work. As an indispensable key component of the optoelectronic equipment 12, this device can effectively protect the internal equipment, provide an observation window, and can work with the optoelectronic equipment 12 to achieve pitch and azimuth rotation scanning. It can achieve long-distance and wide-range target search on or underwater, and efficiently complete the detection, identification and tracking of targets.

[0030] When the device experiences abnormal conditions such as water seepage or leakage, and the internal humidity exceeds the set threshold, the temperature and humidity sensor 11 will automatically issue a warning, indicating the relevant fault.

[0031] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A transmissive, multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover, characterized in that: It includes a high-pressure resistant housing (1), a first protective glass (2) is fixed on the upper side of one side of the high-pressure resistant housing (1), a second protective glass (3) is fixed on the lower side, a temperature and humidity sensor (11) is fixed inside the high-pressure resistant housing (1), and the high-pressure resistant housing (1) is used to be installed on the optoelectronic device (12); The high-pressure resistant housing (1) has an upper window (101) and a lower window (102) on one side. A first pressure frame (4) and a second pressure frame (5) are fixed on the upper window (101) and the lower window (102) respectively. The first protective glass (2) and the second protective glass (3) are fixed in the corresponding upper window (101) and lower window (102) respectively through the first pressure frame (4) and the second pressure frame (5).

2. The multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover according to claim 1, characterized in that: The inner end faces of the upper window (101) and the lower window (102) are provided with V-grooves (106), and the inner sides of the upper window (101) and the lower window (102) are provided with clearance grooves (107). A first sealing buffer pad (6) is provided between the inner end face of the first protective glass (2) and the second protective glass (3) and the inner end face of the upper window (101) and the lower window (102), and the first sealing buffer pad (6) abuts against the V-groove (106); A second sealing buffer pad (7) is provided between the outer side of the first protective glass (2) and the second protective glass (3) and the inner wall of the upper window (101) and the lower window (102). A third sealing buffer pad (8) is provided between the first pressure frame (4) and the second pressure frame (5) and the upper window (101) and the lower window (102); A fourth sealing buffer pad (9) is provided between the outer end face of the first protective glass (2) and the second protective glass (3) and the first pressure frame (4) and the second pressure frame (5).

3. The multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover according to claim 1, characterized in that: The bottom of the first pressure frame (4) is provided with a through first water guide groove (401), and the first water guide groove (401) is located on one side of the outer end face of the first protective glass (2); The bottom of the second pressure frame (5) is provided with a through second water guide groove (501), which is located on one side of the outer end face of the second protective glass (3).

4. The multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover according to claim 1, characterized in that: The high-pressure resistant housing (1) has an exhaust port (103) and an air inlet (104) on one side. The exhaust port (103) and the air inlet (104) are provided with threaded drying screws (10), and the drying screws (10) are also provided with sealing rings. The bottom of the high-pressure resistant housing (1) is provided with multiple threaded holes (105), which match the mounting holes on the optoelectronic device (12) and are locked and sealed by bolts and sealing rings.

5. The multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover according to claim 1, characterized in that: The upper window (101) and the lower window (102) form a 150° angle, and the upper window (101) and the lower window (102) are respectively deflected by 4 degrees 20′ relative to the vertical plane of the system's visual axis.

6. The multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover according to claim 1, characterized in that: The first protective glass (2) and the second protective glass (3) are made of sapphire, with an anti-reflective coating on their inner end face and a hydrophobic coating on their outer end face.

7. The multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover according to claim 1, characterized in that: The high-pressure resistant shell (1) has internal reinforcing ribs to enhance its pressure resistance.

8. The multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover according to claim 4, characterized in that: The high-pressure resistant shell (1) is filled with dry nitrogen.

9. The multispectral, deep-penetrating, non-magnetic, corrosion-resistant window cover according to claim 1, characterized in that: The high-pressure resistant shell (1), the first pressure frame (4), and the second pressure frame (5) are made of non-magnetic stainless steel.

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