阅读说明：本技术 大气-海雾模拟装置中水雾附着的抑制系统 (Water mist adhesion inhibiting system in atmosphere-sea mist simulation device ) 是由 张肃 王鹏程 李英超 战俊彤 付强 宋俊宏 于 2021-09-29 设计创作，主要内容包括：大气-海雾模拟装置中水雾附着的抑制系统,属于偏振传输实验测试领域,包括第一偏振发射系统、第二偏振发射系统、第三偏振发射系统、第一偏振接收系统、第二偏振接收系统、第三偏振接收系统、大气-海雾模拟装置和数据处理系统,本发明利用模拟系统正方形箱体内均匀充雾的方式,确保相同光学厚度下,通过单层水平方向偏振传输等效获得垂直方向双层偏振传输的实验结果,达到抑制垂直方向水雾影响的效果。该系统在抑制水雾影响的同时,通过垂直路径与等效路径同时探测的方式,也可得到不同充雾时间光学玻璃附着水雾对偏振传输特性结果的影响,从而提高大气-海雾环境偏振传输特性实验的准确性,为多层介质下偏振探测传输的研究提供新的测试系统。(The invention relates to a suppression system for water mist adhesion in an atmosphere-sea mist simulation device, which belongs to the field of polarization transmission experiment tests and comprises a first polarization transmitting system, a second polarization transmitting system, a third polarization transmitting system, a first polarization receiving system, a second polarization receiving system, a third polarization receiving system, an atmosphere-sea mist simulation device and a data processing system. The system can inhibit the influence of water mist, and simultaneously detect the vertical path and the equivalent path, and can also obtain the influence of the water mist attached to the optical glass in different mist filling time on the polarization transmission characteristic result, thereby improving the accuracy of the atmospheric-sea fog environment polarization transmission characteristic experiment and providing a new test system for the research of polarization detection transmission under multilayer media.)

1. A system for suppressing water mist adhesion in an atmosphere-sea mist simulator is characterized by comprising: the device comprises a first polarization transmitting system (1), a second polarization transmitting system (2), a third polarization transmitting system (3), a first polarization receiving system (4), a second polarization receiving system (5), a third polarization receiving system (6), an atmosphere-sea fog simulation device (7) and a data processing system (8), wherein the atmosphere-sea fog simulation device (7) is of a sealed box structure, a partition plate is arranged in the atmosphere-sea fog simulation device (7), the partition plate divides the inner space of the atmosphere-sea fog simulation device (7) into an upper cavity and a lower cavity, the two cavities are of square structures in the same shape, the cavity above the upper cavity is filled with atmosphere aerosol to form an atmosphere environment simulation layer for simulating an atmosphere environment, the cavity below the lower cavity is filled with sea fog particles to form a sea fog environment simulation layer for simulating a sea fog environment, an optical glass window is respectively arranged at the central positions of the bottom wall of the atmosphere-sea fog simulation device (7), the separation plate inside the atmosphere-sea fog simulation device (7) and the top wall of the atmosphere-sea fog simulation device (7), namely a first optical glass window (701), a second optical glass window (702) and a third optical glass window (703), wherein the first optical glass window (701), the second optical glass window (702) and the third optical glass window (703) are arranged in a right-to-left mode, two optical glass windows are respectively arranged on two side walls of the lower part of the atmosphere-sea fog simulation device (7), namely a fourth optical glass window (704) and a fifth optical glass window (705), wherein the fourth optical glass window (704) and the fifth optical glass window (705) are arranged in a right-to-left mode, and one optical glass window is respectively arranged on two side walls of the upper part of the atmosphere-sea fog simulation device (7), a sixth optical glass window (706) and a seventh optical glass window (707) respectively, wherein the sixth optical glass window (706) and the seventh optical glass window (707) are arranged oppositely; the first polarization emitting system (1) and the first polarization receiving system (4) are respectively arranged on the upper side and the lower side of the atmosphere-sea fog simulation device (7) along the vertical direction, and light emitted by the first polarization emitting system (1) sequentially passes through a first optical glass window (701), a sea fog environment simulation layer, a second optical glass window (702), an atmosphere environment simulation layer and a third optical glass window (703) and then is emitted into the first polarization receiving system (4); along the horizontal direction, the second polarization emitting system (2) and the second polarization receiving system (5) are respectively arranged at two sides of a sea fog environment simulation layer of the atmosphere-sea fog simulation device (7), and light emitted by the second polarization emitting system (2) sequentially passes through a fourth optical glass window (704), the sea fog environment simulation layer and a fifth optical glass window (705) and then is emitted into the second polarization receiving system (5); along the horizontal direction, the third polarization emitting system (3) and the third polarization receiving system (6) are respectively arranged at two sides of an atmospheric environment simulation layer of the atmospheric-sea fog simulation device (7), and light emitted by the third polarization emitting system (3) sequentially passes through a sixth optical glass window (706), the atmospheric environment simulation layer and a seventh optical glass window (707) and then is emitted into the third polarization receiving system (6); and the first polarization receiving system (4), the second polarization receiving system (5) and the third polarization receiving system (6) are all connected with a data processing system (8) for data transmission.

2. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 1, wherein: the first polarization emitting system (1) is composed of a first laser (101), a first attenuation plate (102), a first polarizing plate (103) and a first quarter-wave plate (104) which are sequentially arranged along the propagation direction of light.

3. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 1, wherein: the second polarization emitting system (2) is composed of a second laser (201), a second attenuation plate (202), a second polarizing plate (203) and a second quarter-wave plate (204) which are sequentially arranged along the propagation direction of light.

4. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 1, wherein: the third polarization emitting system (3) is composed of a third laser (301), a third attenuation plate (302), a third polarizing plate (303), a first liquid crystal variable phase retarder (304) and a second liquid crystal variable phase retarder (305) which are sequentially arranged along the propagation direction of light.

5. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 1, wherein: the first polarization receiving system (4) is used for measuring the polarization state and the light power of the polarized light which is received by the first polarization receiving system and penetrates through the two-layer environment of the vertical atmosphere-sea fog simulation device (7), the first polarization receiving system (4) comprises a first non-polarization beam splitter prism (401), a first light power meter (402) and a first polarization state measuring instrument (403), the first light power meter (402) is arranged on a transmission light path of the first non-polarization beam splitter prism (401), and the first polarization state measuring instrument (403) is arranged on a reflection light path of the first non-polarization beam splitter prism (401).

6. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 1, wherein: the second polarization receiving system (5) is used for measuring the polarization state and the optical power of the polarized light which is received by the second polarization receiving system and penetrates through the sea fog simulation layer in the horizontal direction, the second polarization receiving system (5) comprises a second non-polarization beam splitter prism (501), a second optical power meter (502) and a second polarization state measuring instrument (503), the second optical power meter (502) is arranged on the reflection optical path of the second non-polarization beam splitter prism (501), and the second polarization state measuring instrument (503) is arranged on the transmission optical path of the second non-polarization beam splitter prism (501).

7. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 1, wherein: the third polarization receiving system (6) is used for measuring the polarization state and the optical power of the polarized light which is received by the third polarization receiving system and penetrates through the horizontal atmosphere simulation layer, the third polarization receiving system (6) comprises a third non-polarization beam splitter prism (601), a third optical power meter (602) and a third polarization state measuring instrument (603), the third optical power meter (602) is arranged on the reflection optical path of the third non-polarization beam splitter prism (601), and the third polarization state measuring instrument (603) is arranged on the transmission optical path of the third non-polarization beam splitter prism (601).

8. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 4, wherein: the polarized light emitted by the first polarized emitting system (1) is visible light or near infrared light, the polarized light emitted by the second polarized emitting system (2) is visible light or near infrared light, the polarized light emitted by the third polarized emitting system (3) is visible light or near infrared light, in the same experimental process, the polarized light emitted by the first polarized emitting system (1) and the polarized light emitted by the second polarized emitting system (2) are the same, and the polarized light in the polarized state received by the second polarized receiving system (5) is emitted after the third polarized emitting system (3) is modulated by the double-liquid-crystal variable phase retarder.

9. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 1, wherein: the optical glass adopted by the first optical glass window (701), the second optical glass window (702), the third optical glass window (703), the fourth optical glass window (704), the fifth optical glass window (705), the sixth optical glass window (706) and the seventh optical glass window (707) is K9 glass, and the light transmission range is 330 nm-2100 nm.

10. The system for suppressing adhesion of water mist in an atmosphere-sea mist simulation apparatus according to claim 1, wherein: the fourth optical glass window (704), the fifth optical glass window (705), the sixth optical glass window (706) and the seventh optical glass window (707) are provided with waterproof frames.

Technical Field

The invention belongs to the field of polarization transmission experiment tests, and particularly relates to a water mist adhesion inhibiting system in an atmosphere-sea mist simulation device.

Background

China coastal and offshore areas are multi-sea fog areas, and due to low visibility of sea fog, the sea traffic and the sea operation are greatly threatened, and personnel and property loss is often caused. When the vehicle is observed on the plane, the detection difficulty in the vertical direction is greatly increased due to the existence of the atmosphere-sea fog multilayer medium environment. Therefore, the research on the multilayer medium detection has important significance for the fields of marine traffic and the like

However, the atmosphere-sea fog outfield environment is changeable, the influence factors are complex, the interference is more, and the use cost of airborne equipment, shipborne equipment and the like in the outfield test is higher, so that the atmosphere-sea fog environment indoor system is generally adopted to simulate the real environment of the outfield. Indoor experiments in atmosphere-sea fog environments have been researched, and because polarized light has the advantage of penetrating sea fog, the polarized light can carry richer information, and the polarized light is mostly adopted for carrying out indoor experiments such as polarized imaging and polarized transmission. However, in an indoor experiment, it is found that a layer of water mist is formed on a vertical path optical window after sea mist is settled in vertical detection, which causes serious influence on information such as laser energy, polarization state and the like, and the accuracy of an experimental test result is rapidly reduced, so that the research on a water mist adhesion inhibition system in the atmosphere-sea mist simulator is of great significance to the indoor experiment of the atmosphere-sea mist environment detection in the vertical direction.

Therefore, in order to investigate the influence of the water mist attached to the optical window of the atmosphere-sea mist simulator in the vertical direction on indoor experiments and suppress the interference of the water mist, a water mist attachment suppression system in the atmosphere-sea mist simulator is needed.

Disclosure of Invention

The invention aims to provide a water mist adhesion inhibition system in an atmosphere-sea mist simulator, aiming at solving the problem that a layer of water mist is attached to optical glass on a vertical path due to sea mist settlement to influence the experimental result in the polarization transmission experiment of the atmosphere-sea mist simulator, and aiming at researching the influence of the attached water mist on the atmosphere-sea mist simulator experiment and inhibiting the attached water mist.

The technical scheme adopted by the invention for realizing the purpose is as follows: a system for suppressing water mist adhesion in an atmosphere-sea mist simulator is characterized by comprising: the device comprises a first polarization transmitting system, a second polarization transmitting system, a third polarization transmitting system, a first polarization receiving system, a second polarization receiving system, a third polarization receiving system, an atmosphere-sea fog simulation device and a data processing system, wherein the atmosphere-sea fog simulation device is of a sealed box structure, a partition plate is arranged in the atmosphere-sea fog simulation device and divides the inner space of the atmosphere-sea fog simulation device into an upper chamber and a lower chamber, the two chambers are of square structures with the same shapes, atmosphere aerosol is filled in the upper chamber to form an atmosphere environment simulation layer for simulating an atmosphere environment, sea fog particles are filled in the lower chamber to form a sea fog environment simulation layer for simulating a sea fog environment, and an optical system is arranged at the central positions of the bottom wall of the atmosphere-sea fog simulation device, the partition plate in the atmosphere-sea fog simulation device and the top wall of the atmosphere-sea fog simulation device respectively The glass windows are respectively a first optical glass window, a second optical glass window and a third optical glass window, the first optical glass window, the second optical glass window and the third optical glass window are arranged oppositely, two side walls of the lower part of the atmosphere-sea fog simulation device are respectively provided with an optical glass window which is respectively a fourth optical glass window and a fifth optical glass window, the fourth optical glass window and the fifth optical glass window are arranged oppositely, two side walls of the upper part of the atmosphere-sea fog simulation device are respectively provided with an optical glass window which is respectively a sixth optical glass window and a seventh optical glass window, and the sixth optical glass window and the seventh optical glass window are arranged oppositely; the first polarization emitting system and the first polarization receiving system are respectively arranged at the upper side and the lower side of the atmosphere-sea fog simulation device along the vertical direction, and light emitted by the first polarization emitting system sequentially passes through the first optical glass window, the sea fog environment simulation layer, the second optical glass window, the atmosphere environment simulation layer and the third optical glass window and then is emitted into the first polarization receiving system; the second polarization emitting system and the second polarization receiving system are respectively arranged on two sides of a sea fog environment simulation layer of the atmosphere-sea fog simulation device along the horizontal direction, and light emitted by the second polarization emitting system sequentially passes through a fourth optical glass window, the sea fog environment simulation layer and a fifth optical glass window and then is emitted into the second polarization receiving system; the third polarization emitting system and the third polarization receiving system are respectively arranged at two sides of an atmospheric environment simulation layer of the atmospheric-sea fog simulation device along the horizontal direction, and light emitted by the third polarization emitting system sequentially passes through a sixth optical glass window, the atmospheric environment simulation layer and a seventh optical glass window and then is emitted into the third polarization receiving system; and the first polarization receiving system, the second polarization receiving system and the third polarization receiving system are all connected with the data processing system for data transmission.

Further, the first polarization emission system is composed of a first laser, a first attenuation plate, a first polarizing plate and a first quarter wave plate which are sequentially arranged along the propagation direction of light.

Further, the second polarization emission system is composed of a second laser, a second attenuation plate, a second polarizer and a second quarter-wave plate which are sequentially arranged along the propagation direction of the light.

Further, the third polarization emitting system is composed of a third laser, a third attenuation plate, a third polarizing plate, a first liquid crystal variable phase retarder and a second liquid crystal variable phase retarder which are sequentially arranged along the propagation direction of light.

Further, the first polarization receiving system is used for measuring the polarization state and the optical power of the polarized light which is received by the first polarization receiving system and penetrates through the two-layer environment of the atmosphere-sea fog simulation device in the vertical direction, the first polarization receiving system comprises a first non-polarization beam splitter prism, a first optical power meter and a first polarization state measuring instrument, the first optical power meter is arranged on a transmission optical path of the first non-polarization beam splitter prism, and the first polarization state measuring instrument is arranged on a reflection optical path of the first non-polarization beam splitter prism.

Further, the second polarization receiving system is used for measuring the polarization state and the optical power of the polarized light which is received by the second polarization receiving system and penetrates through the sea fog simulation layer in the horizontal direction, the second polarization receiving system comprises a second non-polarization beam splitter prism, a second optical power meter and a second polarization state measuring instrument, the second optical power meter is arranged on a reflection optical path of the second non-polarization beam splitter prism, and the second polarization state measuring instrument is arranged on a transmission optical path of the second non-polarization beam splitter prism.

Further, the third polarization receiving system is used for measuring the polarization state and the optical power of the polarized light which is received by the third polarization receiving system and passes through the horizontal atmosphere simulation layer, the third polarization receiving system comprises a third non-polarization beam splitter prism, a third optical power meter and a third polarization state measuring instrument, the third optical power meter is arranged on a reflection optical path of the third non-polarization beam splitter prism, and the third polarization state measuring instrument is arranged on a transmission optical path of the third non-polarization beam splitter prism.

Furthermore, the polarized light emitted by the first polarized emission system is visible light or near infrared light, the polarized light emitted by the second polarized emission system is visible light or near infrared light, the polarized light emitted by the third polarized emission system is visible light or near infrared light, in the same experimental process, the polarized light emitted by the first polarized emission system and the polarized light emitted by the second polarized emission system are the same, and the polarized light received by the second polarized reception system is emitted by the third polarized emission system after being modulated by the double-liquid-crystal variable phase retarder.

Furthermore, the optical glass adopted by the first optical glass window, the second optical glass window, the third optical glass window, the fourth optical glass window, the fifth optical glass window, the sixth optical glass window and the seventh optical glass window is K9 glass, and the light transmission range is 330 nm-2100 nm.

Further, the fourth optical glass window, the fifth optical glass window, the sixth optical glass window and the seventh optical glass window are provided with waterproof frames.

Through the design scheme, the invention can bring the following beneficial effects: aiming at the defect that in a complicated indoor experiment for researching polarization transmission characteristics in the vertical direction in an atmosphere-sea fog environment, a layer of water fog is formed on optical glass due to sea fog settlement, and the polarization characteristic experiment result is influenced, the invention provides a water fog adhesion inhibition system in an atmosphere-sea fog simulation device. The system can inhibit the influence of water mist, and simultaneously detect the vertical path and the equivalent path, and can also obtain the influence of the water mist attached to the optical glass in different mist filling time on the polarization transmission characteristic result, thereby improving the accuracy of the atmospheric-sea fog environment polarization transmission characteristic experiment and providing a new test system for the research of polarization detection transmission under multilayer media.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to the right, and in which:

fig. 1 is a schematic structural view of a system for suppressing mist adhesion in an atmosphere-sea mist simulator.

The respective symbols in the figure are as follows: 1 is a first polarization transmitting system, 101 is a first laser, 102 is a first attenuation plate, 103 is a first polarizing plate, 104 is a first quarter-wave plate, 2 is a second polarization transmitting system, 201 is a second laser, 202 is a second attenuation plate, 203 is a second polarizing plate, 204 is a second quarter-wave plate, 3 is a third polarization transmitting system, 301 is a third laser, 302 is a third attenuation plate, 303 is a third polarizing plate, 304 is a first liquid crystal variable phase retarder, 305 is a second liquid crystal variable phase retarder, 4 is a first polarization receiving system, 401 is a first non-polarization beam splitter prism, 402 is a first optical power meter, 403 is a first polarization state measuring instrument, 5 is a second polarization receiving system, 501 is a second non-polarization beam splitter prism, 502 is a second optical power meter, 503 is a second polarization state measuring instrument, 6 is a third polarization receiving system, 601 is a third non-polarization beam splitter prism, 602 is a third optical power meter, 603 is a third polarization state measuring instrument, 7 is an atmosphere-sea fog simulation device, 701 is a first optical glass window, 702 is a second optical glass window, 703 is a third optical glass window, 704 is a fourth optical glass window, 705 is a fifth optical glass window, 706 is a sixth optical glass window, 707 is a seventh optical glass window, 708 is a sea fog particle generator, 709 is an atmosphere aerosol generator, and 8 is a data processing system.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the present invention is not limited by the following examples, and specific embodiments can be determined according to the technical solutions and practical situations of the present invention. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention. In the description of the present invention, it is to be understood that the terms "first", "second", "third", "fourth", "fifth", "sixth" and "seventh" are used for descriptive purposes only and that the features defined as "first", "second", "third", "fourth", "fifth", "sixth" and "seventh" do not denote any order, quantity or importance, but rather are used to distinguish one element from another. In the present invention, for convenience of description, the description of the relative positional relationship of the respective members is described based on the layout pattern of the drawings, and the positional relationship of the upper, lower, left, right, etc. is determined based on the layout direction of the drawings.

As shown in fig. 1, the system for suppressing water mist adhesion in an atmosphere-sea mist simulator includes: the system comprises a first polarized transmitting system 1, a second polarized transmitting system 2, a third polarized transmitting system 3, a first polarized receiving system 4, a second polarized receiving system 5, a third polarized receiving system 6, an atmosphere-sea fog simulation device 7 and a data processing system 8.

The first polarization emitting system 1 is positioned below the atmosphere-sea fog simulation device 7 and is opposite to the first optical glass window 701, and the first polarization emitting system 1 is used for emitting polarized light for the environment of the upper layer and the lower layer of the atmosphere-sea fog simulation device 7 arranged in the vertical direction; the first polarization emitting system 1 is composed of a first laser 101, a first attenuation plate 102, a first polarizer 103 and a first quarter-wave plate 104 which are sequentially arranged along the propagation direction of light, according to experimental needs, the first laser 101 can be used for emitting visible light or near infrared light, and the first attenuation plate 102 is used for changing the light power of the laser reaching the first polarization receiving system 4; the first polarizer 103 and the first quarter-wave plate 104 are adjusted to obtain polarized light of different polarization states.

The second polarization emitting system 2 is located on one side of the lower layer of the atmosphere-sea fog simulation device 7, where the fourth optical glass window 704 is arranged, and the second polarization emitting system 2 is opposite to the fourth optical glass window 704, the second polarization emitting system 2 is used for emitting polarized light for the sea fog environment simulation layer of the atmosphere-sea fog simulation device 7 in the horizontal direction, the second polarization emitting system 2 is composed of a second laser 201, a second attenuation plate 202, a second polarizing plate 203 and a second quarter wave plate 204 which are sequentially arranged along the propagation direction of light, according to experimental requirements, the second laser 201 can be used for emitting visible light or near infrared light, and the second attenuation plate 202 is used for changing the light power of the laser reaching the second polarization receiving system 5; the second polarizer 203 and the second quarter-wave plate 204 are adjusted to obtain polarized light of different polarization states.

The third polarization emitting system 3 is positioned on one side of the atmosphere-sea fog simulation device 7 with a sixth optical glass window 706 on the upper layer, the third polarization emitting system 3 is opposite to the sixth optical glass window 706, the third polarization emitting system 3 is used for emitting polarized light for the atmosphere environment simulation layer of the atmosphere-sea fog simulation device 7 in the horizontal direction, the third polarization emitting system 3 comprises a third laser 301, a third attenuation plate 302, a third polarizing plate 303, a first liquid crystal variable phase retarder 304 and a second liquid crystal variable phase retarder 305 which are sequentially arranged along the propagation direction of light, the third laser 301 can replace visible light and near infrared wave bands, and visible light or near infrared light is emitted according to experimental requirements; compared with the conventional mechanical rotation polarization modulator, the polarization degree adjusting precision of the polarization state modulated by the double liquid crystal variable phase delayers can reach one thousandth, and the polarization degree adjusting device has the advantages of large adjustable range, no mechanical adjustment, dynamic continuous adjustment and the like, and can quickly, accurately and stably obtain polarized light in any polarization state. Since the third polarized light emitting system 3 needs to obtain polarized light with a complicated polarization state, the dual liquid crystal variable phase retarder is selected to adjust the polarization state due to the requirements of experiments on adjusting speed and adjusting precision. The third attenuator 302 is used to change the optical power of the laser light reaching the third polarization receiving system 6; polarized light of an arbitrary polarization state can be obtained by adjusting the third polarizing plate 303, the first liquid crystal variable phase retarder 304 and the second liquid crystal variable phase retarder 305, wherein the first liquid crystal variable phase retarder 304 and the second liquid crystal variable phase retarder 305 can be experimented with LCC1413-A (350 nm-700 nm), LCC1413-B (650 nm-1050 nm) and LCC1413-C (1050 nm-1700 nm) of Thorlabs company according to wavelength bands.

The first polarization receiving system 4 is arranged above the atmosphere-sea fog simulation device 7, the first polarization receiving system 4 is opposite to the third optical glass window 703, the first polarization receiving system 4 comprises a first non-polarization beam splitter prism 401, a first optical power meter 402 and a first polarization state measuring instrument 403, the first optical power meter 402 is arranged on a transmission optical path of the first non-polarization beam splitter prism 401, and the first polarization state measuring instrument 403 is arranged on a reflection optical path of the first non-polarization beam splitter prism 401; the first polarization receiving system 4 is used for measuring the polarization state and the optical power of the polarized light received by the first polarization receiving system and passing through the two-layer environment of the vertical atmosphere-sea fog simulation device 7, and is connected to the data processing system 8 through a data line for data analysis and processing.

The second polarization receiving system 5 is arranged at the right side of a fifth optical glass window 705 of the atmosphere-sea fog simulation device 7, the second polarization receiving system 5 comprises a second non-polarization beam splitter prism 501, a second optical power meter 502 and a second polarization state measuring instrument 503, the second optical power meter 502 is arranged on the reflection optical path of the second non-polarization beam splitter prism 501, the second polarization state measuring instrument 503 is arranged on the transmission optical path of the second non-polarization beam splitter prism 501, and the second polarization receiving system 5 is used for measuring the polarization state and the optical power of the polarization light which passes through the horizontal sea fog simulation system layer and is received by the second polarization receiving system 5 and is connected to the data processing system 8 through a data line to perform analysis processing of data and the like.

The third polarization receiving system 6 is arranged at the right side of a sixth optical glass window 706 of the atmosphere-sea fog simulation device 7, the third polarization receiving system 6 comprises a third non-polarization beam splitter prism 601, a third optical power meter 602 and a third polarization state measuring instrument 603, the third optical power meter 602 is arranged on a reflection optical path of the third non-polarization beam splitter prism 601, the third polarization state measuring instrument 603 is arranged on a transmission optical path of the third non-polarization beam splitter prism 601, and the third polarization receiving system 6 is used for measuring the polarization state and the optical power of the polarization light which passes through the atmosphere simulation system layer in the horizontal direction and is received by the third polarization receiving system 6, and is connected to the data processing system 8 through a data line for data analysis processing.

The atmosphere-sea fog simulation device 7 is a square stainless steel box body with an upper layer and a lower layer, the centers of the top of the upper layer, the middle partition plate and the bottom of the lower layer are provided with an optical glass window which is respectively a third optical glass window 703, a second optical glass window 702 and a first optical glass window 701, and the channel is called as a first channel; the corresponding positions of the left and right side walls of the upper layer and the lower layer of the atmosphere-sea fog simulation device 7 are respectively provided with an optical glass window, the lower layer is respectively provided with a fourth optical glass window 704 and a fifth optical glass window 705, and the channel is called as a second channel; the upper layers are a sixth optical glass window 706 and a sixth optical glass window 707, respectively, and the path is called a third path. The first light beam enters a first channel through a first optical glass window 701, exits from a third optical glass window 703, and enters a first non-polarization beam splitter prism 401 of the first polarization receiving system 4; the second light beam enters the second channel through the fourth optical glass window 704, exits from the fifth optical glass window 705, and enters the second non-polarization beam splitter prism 501 of the second polarization receiving system 5; the third light beam enters the third channel through the sixth optical glass window 706, exits from the seventh optical glass window 707, and enters the third non-polarization splitting prism 601 of the third polarization receiving system 6. The lower layer is filled with sea fog particles by a sea fog particle generator 708 to simulate the sea fog environment, and the upper layer is filled with atmospheric aerosol by an atmospheric aerosol generator 709 to simulate the atmospheric environment.

The data processing system 8 is connected with the first optical power meter 402, the first polarization state measuring instrument 403, the second optical power meter 502, the second polarization state measuring instrument 503, the third optical power meter 602 and the third polarization state measuring instrument 603 by data lines, and analyzes and processes the optical power and the polarization state data recorded by the data processing system.

The optical glass used for the first optical glass window 701, the second optical glass window 702, the third optical glass window 703, the fourth optical glass window 704, the fifth optical glass window 705, the sixth optical glass window 706 and the seventh optical glass window 707 is K9 glass, and the light transmission range is 330nm to 2100 nm. The K9 glass has high hardness, good laser damage resistance and good transmittance for visible light bands and near infrared bands.

The fourth optical glass window 704, the fifth optical glass window 705, the sixth optical glass window 706 and the seventh optical glass window 707 have waterproof frames, the waterproof frames can prevent side wall water mist from flowing onto the fourth optical glass window 704, the fifth optical glass window 705, the sixth optical glass window 706 and the seventh optical glass window 707, the waterproof frames have certain depth, the length of the outer frames is 10cm, and water mist settlement has no influence on the waterproof frames. The first optical glass window 701, the second optical glass window 702 and the third optical glass window 703 in the vertical direction are not provided with a waterproof frame, and the waterproof frame is arranged in the vertical direction, so that the settled water mist is accumulated continuously.

With reference to fig. 1, the process of performing a polarization transmission experiment with/without the influence of water mist attached to optical glass by using the above water mist attachment inhibiting system in the atmosphere-sea mist simulation apparatus includes the following steps:

step one, the second laser 201 is started in an empty box, the second attenuation plate 202, the second polarizer 203 and the second quarter-wave plate 204 are adjusted to obtain the polarized light with the required light power and polarization state, and the polarized light is recorded by the second light power meter 502 and the second polarization state measuring instrument 503, wherein the initial light power and polarization state are called as a first light power and a first polarization state. Starting a sea fog particle generator 708 for fog filling, stirring by a built-in fan in the whole process of fog filling, circulating air, ensuring that the sea fog concentration is uniform, and ensuring that fog filling does not change until the indication number of the second optical power meter 502 is stable, wherein the optical power recorded by the second optical power meter 502 is called a second optical power, and the polarization state recorded by the second polarization state measuring instrument 503 is called a second polarization state;

step two, discharging all sea fog and wiping the water fog of the first optical glass window 701 to dry so that the water fog is in an empty box state; turning on the first laser 101, and adjusting the first attenuation sheet 102 to make the first optical power meter 402 obtain a first optical power; adjusting the first polarizer 103 and the first quarter-wave plate 104 to make the first polarization state measurer 403 obtain the first polarization state; turning on the third laser 301, and adjusting the third attenuation sheet 302 to enable the third optical power meter 602 to obtain a second optical power; adjusting the third polarizer 303 to make the included angle between the polarization direction and the horizontal direction 0 degree, adjusting the first liquid crystal variable phase retarder 304 to make the included angle between the fast axis and the horizontal direction 45 degrees, adjusting the second liquid crystal variable phase retarder 305 to make the included angle between the fast axis and the horizontal direction 0 degree, and adjusting the phase delays of the first liquid crystal variable phase retarder 304 and the second liquid crystal variable phase retarder 305 by controlling the voltage to make the third polarization state measuring instrument 603 obtain a second polarization state;

step three, simultaneously starting the sea mist particle generator 708 for mist charging and the atmospheric aerosol generator 709 for atmospheric aerosol charging, wherein the mist charging time and the mist charging process are completely consistent with those in the step one, and the experimental variables are controlled; stirring by a built-in fan in the whole process of mist filling and sol filling to circulate air and ensure that the concentration of sea mist is uniform, and the mist filling is not changed until the indication number of the first optical power meter 402 is stable; at this moment, the first optical power meter 402 records the optical power as the third optical power, the first polarization state measuring instrument 403 records the polarization state as the third polarization state, the third optical power meter 602 records the optical power as the fourth optical power, and the third polarization state measuring instrument 603 records the polarization state as the fourth polarization state;

and step four, comparing the third optical power and the fourth optical power respectively through the data processing system 8, wherein the influence of the attached water fog can be obtained in the third polarization state and the fourth polarization state, and the fourth optical power and the fourth polarization state are the optical power and the polarization state for inhibiting the influence of the attached water fog on the optical window.

The measurement of the influence of the water mist attached to the optical window at different time on the polarization transmission experiment can be carried out by filling the mist at intervals, the influence measurement of the water mist attached to more layers of optical glass by increasing the number of layers of the sea mist box can be carried out, and the like, so that the design system can be used, and the repeated description is avoided.