Optical fiber probe protective film for isolating large particles

Abstract

The utility model provides an optical fiber probe protective film for isolating large particles. The optical fiber probe protective film comprises an isolating layer, a bonding layer and a base film, the isolation layer is attached to the inner surface of the base film through the bonding effect of the bonding layer and is used for blocking large particles; the isolation layer, the bonding layer and the base film are all made of known materials, and the optical performance of the optical fiber probe is not affected. The protective film can isolate large-particle substances and protect the optical fiber probe, so that the service life of the optical fiber probe is prolonged, and the working stability of the optical fiber probe is improved.

Description

Technical Field

[0001] This utility model relates to a protective film, and more particularly to a protective film for an optical fiber probe that isolates large particles. Background Technology

[0002] Fiber optic probes are widely used in medical and industrial testing, and their accuracy and stability are crucial to the accuracy of test results. However, in practical applications, fiber optic probes are often damaged by large particles, affecting their normal operation. For example, large particles attached to the probe tip can scatter or block incident / outgoing light, reducing the signal-to-noise ratio; for probes relying on evanescent wave sensing (such as SPR probes), particle coverage can block the interaction between the analyte and the probe surface, leading to signal distortion. Therefore, there is an urgent need for a protective film that can effectively isolate large particles to ensure the stability and accuracy of fiber optic probes, thereby providing more accurate experimental data. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a protective film for fiber optic probes that isolates large particles, comprising an isolation layer, an adhesive layer, and a base film. The isolation layer is bonded to the inner surface of the base film through the adhesive layer, thereby blocking large particles. The isolation layer, adhesive layer, and base film are all known materials (not new materials) and do not affect the optical performance of the fiber optic probe.

[0004] In some embodiments, a probe cavity is formed by a fiber optic probe protective film that isolates large particles, for housing the optical probe.

[0005] In some implementations, the probe cavity is cylindrical.

[0006] In some implementations, the probe cavity is cylindrical.

[0007] In some implementations, the bottom of the probe cavity is flat.

[0008] In some implementations, the bottom of the probe cavity is a convex arc-shaped bottom.

[0009] In some embodiments, the material used for the isolation layer is polyurethane or polyethylene; the material used for the adhesive layer is silicone sealant or epoxy resin; and the material used for the base film is polycarbonate or polyester.

[0010] In some embodiments, the material used for the isolation layer is polyurethane or polyethylene with a degree of polymerization of 3,000-5,000; the material used for the adhesive layer is silicone sealant or epoxy resin; and the material used for the base film is polycarbonate with a molecular weight of 20,000 to 30,000 or polyester with a molecular weight of 50,000 to 60,000.

[0011] In some embodiments, the pore size of the isolation layer is 0.22 micrometers; the pore size of the adhesive layer is 0.5 micrometers; and the pore size of the base film is 1 micrometer. Those skilled in the art should understand that the specific values ​​used herein can fluctuate within ±5% to 10% of these values. For example, a pore size of 0.22 micrometers for the isolation layer should be understood as 0.22 micrometers ± (0.22 × 5% or 10%), i.e., a pore size of 0.209 to 0.231 micrometers or 0.198 to 0.242 micrometers.

[0012] In some embodiments, the thickness of the isolation layer is 0.3 mm; the thickness of the adhesive layer is 0.3 mm; and the thickness of the base film is 0.4 mm.

[0013] The protective film of this invention can isolate large particles and protect the fiber optic probe, thereby improving the service life and operational stability of the fiber optic probe.

[0014] In experiments using online fiber optic probes to detect data, if the sample contains a large amount of suspended solids or large particles, particle aggregation is a common occurrence at the probe site. Aggregated particles can affect the accuracy of the data collected by the fiber optic cable, leading to erroneous experimental results and conclusions.

[0015] The protective film of this invention can effectively isolate the accumulation of large particles at the probe site, avoiding the impact on data detection and thus obtaining more accurate experimental data. Attached Figure Description

[0016] Figure 1 A three-dimensional schematic diagram of the structure of the fiber optic probe protective film for isolating large particles provided in Embodiment 1 of this utility model.

[0017] Figure 2 A schematic cross-sectional view of the structure of the fiber optic probe protective film for isolating large particles provided in Embodiment 1 of this utility model.

[0018] Figure 3 A three-dimensional schematic diagram of the structure of the fiber optic probe protective film for isolating large particles provided in Embodiment 2 of this utility model.

[0019] Figure 4 A schematic cross-sectional view of the structure of the fiber optic probe protective film for isolating large particles provided in Embodiment 2 of this utility model. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] In the description of this utility model, it should be understood that if terms such as "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this utility model, unless otherwise explicitly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this invention are for illustrative purposes only and do not represent the only possible implementation.

[0025] Example 1

[0026] Figure 1 and 2 An embodiment of the fiber optic probe protective film for isolating large particles according to this invention is shown. In this embodiment, the fiber optic probe protective film for isolating large particles includes an isolation layer 1, an adhesive layer 2, and a base film 3, and has a probe cavity 4 formed by the fiber optic probe protective film for accommodating a light probe. The isolation layer 1 is adhered to the inner surface of the base film 3 by the adhesive layer 2 to block large particles.

[0027] The material used for isolation layer 1 is polyurethane with a degree of polymerization of 3000-5000 (such as that produced by Huntsman). LFH); Adhesive layer 2 uses silicone adhesive manufactured by Dow Corning (such as DOWSIL). TM 732); The base film 3 is made of polycarbonate with a molecular weight of 20,000 to 30,000 (such as LEXAN produced by Sabic). TM (9030). The isolation layer 1, adhesive layer 2, and base film 3 do not affect the optical performance of the fiber optic probe. The pore size of the isolation layer 1 is 0.22 μm; the pore size of the adhesive layer 2 is 0.5 μm; and the pore size of the base film 3 is 1 μm. The thickness of the isolation layer 1 is 0.3 mm; the thickness of the adhesive layer 2 is 0.3 mm; and the thickness of the base film 3 is 0.4 mm.

[0028] The probe cavity 4 is cylindrical. The bottom of the probe cavity 4 is flat.

[0029] Example 2

[0030] Figure 3 and 4 This embodiment illustrates the protective film for isolating large particles from the fiber optic probe. In this embodiment, the bottom of the probe cavity 4 is a convex, arc-shaped bottom. The material used for the isolation layer 1 is polyethylene with a high degree of polymerization (such as HDPE HMA 014 produced by ExxonMobil); the material used for the adhesive layer 2 is epoxy resin produced by 3M (such as Scotch-Weld). TMEpoxyAdhesive DP100); the base film 3 is made of polyester with a molecular weight of 50,000 to 60,000 (such as that produced by DuPont). A).

[0031] The rest is the same as in Example 1.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Images