Multiplexing device for dark spectrum correction and optical window cleaning

Abstract

The utility model discloses a multiplexing device used for dark spectrum correction and optical window cleaning. The multiplexing device comprises a housing, wherein an installation space is formed in the housing; a detachable end cover is arranged at one end of the shell; the composite brush head comprises a light shielding plate, a cleaning part and a rotating assembly; wherein the shading plate is connected with the end cover through a rotating assembly; the cleaning part is fixedly connected with the shading plate; and the cleaning part is in contact connection with the end cover. The composite brush head adopted by the utility model not only can play a role in shielding ambient light, but also can be used for dark spectrum measurement; meanwhile, when the composite brush head is screwed out of the optical window, the optical window can be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of spectral radiation measurement, and particularly relates to a multiplexing device for dark spectrum correction and optical window cleaning. Background Art

[0002] Spectral radiometric measurement is to measure the intensity distribution of radiation energy in different wavelength ranges to obtain a radiation spectrum, and then calculate radiation parameters such as irradiance and radiance. Spectral radiometric measurement generally uses a spectrometer to measure the radiation spectrum. Among them, photodetectors such as array CCDs and CMOSs are the core components of the spectrometer. However, such photodetectors are affected by factors such as dark current and dark noise. Even under the condition of no light incidence, the measurement result of the spectral intensity is not exactly zero. The spectrum measured under such a lightless condition is called a dark spectrum. In spectral measurement, the output spectrum is usually a superimposed signal, that is, the radiation spectrum of the light source is superimposed on the dark spectrum. Therefore, to obtain an effective radiation spectrum of the light source, it is necessary to correct the dark spectrum. The method of dark spectrum correction is to accurately measure the dark spectrum and then subtract the dark spectrum from the measured spectrum to obtain an effective radiation spectrum. The dark spectrum needs to be measured under dark conditions that shield the ambient light. A common method is to use devices such as mechanical shutters to block the ambient light. By controlling the closing and opening of the shutter, the process of shielding and exposing the ambient light is completed, and the alternating measurement of the dark spectrum and the radiation spectrum is realized.

[0003] The spectral radiometer for underwater ocean observation needs to be equipped with an anti-biofouling device. Usually, a cleaning brush is used to regularly brush the optical window to solve the problem of biofouling on the optical window caused by long-term deployment underwater. The existing mechanical shutter and cleaning brush are both independently designed and assembled at different positions, resulting in two mechanical structures in the radiometer, which not only increases the complexity of the instrument, increases the volume of the instrument, but also reduces the reliability of the instrument.

[0004] In summary, there is a need to design a multiplexing device for dark spectrum correction and optical window cleaning to solve the above problems in the prior art. Summary of the Utility Model

[0005] To solve the above problems in the prior art, the utility model provides a multiplexing device for dark spectrum correction and optical window cleaning, which solves the problem that the dark spectrum and the optical cleaning functions cannot be realized simultaneously in the prior art.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A multiplexing device for dark spectrum correction and optical window cleaning, comprising:

[0008] A housing, which forms an installation space therein; one end of the housing is provided with a detachable end cover;

[0009] Composite brush head, comprising a light shield, a cleaning part and a rotating assembly;

[0010] Wherein, the light shield is connected to the end cap through the rotating assembly;

[0011] The cleaning part is fixedly connected to the light shield;

[0012] The cleaning part is in contact connection with the end cap.

[0013] In some embodiments of the present invention, the rotating assembly includes a rotating shaft and a rotating motor; one end of the rotating shaft is connected to the light shield, and the other end thereof is connected to the rotating motor.

[0014] In some embodiments of the present invention, the light shield makes a circular motion on the surface of the end cap driven by the rotating assembly.

[0015] In some embodiments of the present invention, the end cap is circular, and an optical window is provided on the end cap, and the optical window is used to transmit an optical signal into the instrument.

[0016] In some embodiments of the present invention, the light shield is semi-circular.

[0017] In some embodiments of the present invention, the outer diameter of the optical window is not greater than the cleaning radius of the cleaning part.

[0018] In some embodiments of the present invention, the cleaning part uses a cleaning rubber strip, and the cleaning rubber strip is adhesively fixed on one side of the light shield.

[0019] In some embodiments of the present invention, the cleaning rubber strip is wound into a closed shape, and the closed shape is consistent with the outer peripheral shape of the light shield.

[0020] In some embodiments of the present invention, the end cap is provided with a connecting part, and the connecting part is detachably connected to the housing.

[0021] In some embodiments of the present invention, when the light shield rotates above the optical window, a dark environment is formed inside the housing; when the light shield rotates out of the optical window, the cleaning part completes the cleaning of the optical window.

[0022] The technical solution of the present invention has the following technical effects compared with the prior art:

[0023] The utility model relates to a multiplexing device for dark spectrum correction and optical window cleaning. Due to the design of an integrated composite brush head, when the integrated composite brush head rotates to the directly above of the optical window, it can block ambient light, and at this time, dark spectrum measurement can be carried out; when the integrated composite brush head rotates out of the optical window, the optical window is cleaned, and at this time, ambient spectral signals can be detected for radiance measurement. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the multiplexing device shown in the embodiment.

[0026] Figure 2 It is a schematic structural diagram of the composite brush head shown in the embodiment.

[0027] Figure 3 It is a schematic structural diagram of the end cap shown in the embodiment.

[0028] Reference numerals: 100, housing; 110, installation space; 200, end cap; 210, optical window; 220, connection part; 300, composite brush head; 310, light shielding plate; 320, cleaning part; 330, rotating shaft. Detailed Embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0032] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0033] Referring to Figures 1 - 3 As shown, a multiplexing device for dark spectrum correction and optical window cleaning includes:

[0034] A housing 100, inside which an installation space 110 is formed; one end of the housing 100 is provided with a detachable end cover 200;

[0035] A composite brush head 300, including a light-shielding plate 310, a cleaning portion 320, and a rotating assembly;

[0036] Wherein, the light-shielding plate 310 is connected to the end cover 200 through the rotating assembly;

[0037] The cleaning portion 320 is fixedly connected to the light-shielding plate 310;

[0038] The cleaning portion 320 is in contact connection with the end cover 200.

[0039] In some embodiments of the present utility model, the cleaning portion 320 in the composite brush head 300 can clean the optical window 210. The cleaning portion 320 is disposed on the surface of the light-shielding plate 310 that contacts the end cover 200. Therefore, when the cleaning portion 320 cleans the optical window 210, the light-shielding plate 310 shields the optical window 210, realizing a dark environment inside the housing 100, so that the instrument in the installation space 110 can perform dark spectrum measurement.

[0040] In some embodiments of the present utility model, the installation space 110 formed inside the housing 100 is used to provide an underwater-sealed installation position for the instrument; placing the instrument in the installation space 110 of the housing 100 can realize underwater data acquisition or measurement.

[0041] In some embodiments of the present utility model, continue to refer to Figure 2 As shown, the rotating assembly includes a rotating shaft 330 and a rotating motor; one end of the rotating shaft 330 is connected to the light-shielding plate 310, and the other end is connected to the rotating motor.

[0042] Specifically, for the rotating assembly, the rotating shaft 330 is fixedly connected to the light-shielding plate 310; the rotating main body is rotatably connected to the rotating shaft 330; during use, when the optical window 210 needs to be cleaned, the rotating motor is started to drive the rotating shaft 330 to drive the composite brush head 300 to rotate, that is, to drive the cleaning part 320 to rotate on the end cover 200, so as to realize the cleaning of the optical window 210; when a dark environment needs to be provided for the instrument, the rotating motor is started to drive the rotating shaft 330 to drive the composite brush head 300 to rotate, that is, when the light-shielding plate 310 covers the optical window 210, the rotating motor stops rotating, that is, a dark light environment in the installation space 110 can be realized.

[0043] In some embodiments of the present utility model, in order to cooperate with the connection of the rotating shaft 330, a through hole is provided at the central position of the end cover 200; the rotating shaft 330 is inserted into the through hole and fixedly connected to the through hole; thus, the transmission between the rotating shaft 330 and the end cover 200 is realized.

[0044] In some embodiments of the present utility model, the light-shielding plate 310 makes a circular motion on the surface of the end cover 200 driven by the rotating assembly.

[0045] When the cleaning effect of the optical window 210 is not good, the number of rotation cycles of the light-shielding plate 310 can be increased, that is, the number of times the cleaning part 320 wipes the optical window 210 is increased, so as to achieve a better cleaning effect.

[0046] In some embodiments of the present utility model, the end cover 200 is circular, and an optical window 210 is provided on the end cover 200, and the optical window 210 is used to transmit optical signals into the instrument.

[0047] The shape of the end cover 200 matches the cross-sectional shape of the outer shell 100. In Figure 1 In the shown embodiment, the outer shell 100 is cylindrical, so the end cover 200 is circular.

[0048] In some other embodiments, when the installation space 110 enclosed by the outer shell 100 is a rectangular column structure, the shape of the end cover 200 is a same rectangle to adapt to the shape of the outer shell 100.

[0049] In some embodiments of the present utility model, a connecting portion 220 is provided on the end cover 200; the connecting portion 220 is used to fixedly connect the end cover 200 to the outer shell 100.

[0050] Specifically, referring to Figure 3 As shown, the connecting portion 220 is of an annular structure, and the outer diameter of this annular structure is smaller than the outer diameter of the surface of the end cover 200. During use, the connecting portion 220 is inserted into the outer shell 100.

[0051] In addition, threads can be machined on the outer periphery of the connecting portion 220. Similarly, corresponding threads are also machined on the inner wall of the outer shell 100, and the end cover 200 and the outer shell 100 can be detachably connected through the threads.

[0052] In some embodiments of the present utility model, the light-shielding plate 310 is semi-circular.

[0053] Specifically, the light-shielding plate 310 can be of various structures. During the rotation of the light-shielding plate 310, when one side of the light-shielding plate 310 rotates out of the optical window 210, there is a certain distance between the other side and the optical window 210.

[0054] In some embodiments of the present utility model, the outer diameter of the optical window 210 is not greater than the cleaning radius of the cleaning portion 320.

[0055] On the other hand, when the light-shielding plate 310 rotates above the optical window 210, its outer edge is larger than the outer edge of the optical window 210. That is, the light-shielding plate 310 can completely cover the optical window 210.

[0056] In some embodiments of the present utility model, the cleaning portion 320 adopts a cleaning rubber strip, and the cleaning rubber strip is adhesively fixed to one side of the light-shielding plate 310. During use, as the light-shielding plate 310 rotates, the cleaning rubber strip wipes across the optical window 210, thereby achieving the cleaning purpose.

[0057] In some embodiments of the present utility model, the cleaning rubber strip is formed into a closed shape, and the closed shape is consistent with the outer peripheral shape of the light-shielding plate 310.

[0058] Referring to Figure 2 As shown, in this embodiment, the light-shielding plate 310 is semi-circular, then the cleaning rubber strip can also be formed into a semi-circular shape.

[0059] In some embodiments of the present utility model, when the light-shielding plate 310 rotates above the optical window 210, a dark environment is formed inside the housing 100; when the light-shielding plate 310 rotates out of the optical window 210, the cleaning unit 320 completes the cleaning of the optical window 210.

[0060] Specifically, during use, the rotation motor is started, which drives the rotating shaft 330 to drive the light-shielding plate 310 to rotate to any angle. When the light-shielding plate 310 rotates above the optical window 210, a dark environment is formed inside the housing 100; ambient light can be blocked, and at this time, the rotation motor can be paused and a photodetector such as a spectrometer inside the instrument can be started to measure the dark spectrum.

[0061] When the rotation motor is started again and drives the light-shielding plate 310 to rotate out of the optical window 210, the cleaning process of the optical window 210 is completed, and the optical window 210 is completely exposed to the environment. At this time, a photodetector such as a spectrometer inside the instrument can be started to measure the ambient spectral signal. Subtracting the obtained ambient spectrum from the dark spectrum can obtain the radiation spectrum corrected by the dark spectrum for radiance measurement.

[0062] The technical solution of the present utility model has the following technical effects compared with the prior art:

[0063] The present utility model adopts a multiplexing device for dark spectrum correction and cleaning of the optical window 210. Due to the design of the integrated composite brush head 300, when the integrated composite brush head 300 rotates directly above the optical window 210, it can block ambient light, and at this time, the dark spectrum can be measured; when the integrated composite brush head 300 rotates out of the optical window 210, the cleaning of the optical window 210 is completed, and at this time, the ambient spectral signal can be detected for radiance measurement.

[0064] In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0065] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A multiplexing device for dark spectrum correction and optical window cleaning, characterized in that Comprising: A housing, within which an installation space is formed; one end of the housing is provided with a detachable end cap; A composite brush head, including a light shield, a cleaning part and a rotating assembly; Wherein, the light shield is connected to the end cap through the rotating assembly; The cleaning part is fixedly connected to the light shield; The cleaning part is in contact connection with the end cap.

2. The multiplexing device for dark spectrum correction and optical window cleaning according to claim 1, wherein, The rotating assembly includes a rotating shaft and a rotating motor; one end of the rotating shaft is connected to the light shield, and the other end thereof is connected to the rotating motor.

3. The multiplexing device for dark spectrum correction and optical window cleaning according to claim 1, characterized in that, The light shield makes a circular motion on the surface of the end cap under the drive of the rotating assembly.

4. A multiplexing device for dark spectrum correction and optical window cleaning according to claim 1, wherein, The end cap is circular, and an optical window is provided on the end cap, and the optical window is used for transmitting an optical signal into the instrument interior.

5. A multiplexing device for dark spectrum correction and optical window cleaning according to claim 1, characterized in that, The light shield is semi-circular.

6. The multiplexing device for dark spectrum correction and optical window cleaning according to claim 1, characterized in that, The outer diameter of the optical window is not greater than the cleaning radius of the cleaning part.

7. A multiplexing device for dark spectrum correction and optical window cleaning according to claim 1, characterized in that, The cleaning part uses a cleaning rubber strip, and the cleaning rubber strip is adhesively fixed on one side of the light shield.

8. A multiplexing device for dark spectrum correction and optical window cleaning according to claim 7, wherein The cleaning rubber strip is surrounded into a closed shape, and the closed shape is consistent with the outer peripheral shape of the light shield.

9. The multiplexing device for dark spectrum correction and optical window cleaning according to claim 1, wherein The end cap is provided with a connecting part, and the connecting part is detachably connected to the housing.

10. A multiplexing device for dark spectrum correction and optical window cleaning according to claim 5, characterized in that, When the light shield rotates above the optical window, a dark environment is formed within the housing; when the light shield rotates out of the optical window, the cleaning part completes the cleaning of the optical window.

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