Spectrometer

Abstract

The utility model discloses a spectrometer. The spectrometer comprises a shell, an interferometer module, an out-of-cabin front light path element, an out-of-cabin rear light path element and a detector module. The shell comprises a core bin and a functional bin which are sealed and isolated, an interferometer module is arranged in the core bin, and an out-bin front light path element, an out-bin rear light path element and a detector module are arranged in the functional bin. The out-of-bin front light path element emits light from a light source into the core bin, and the interferometer module receives the light from the out-of-bin front light path element; and emergent light of the interferometer module is emitted out of the core bin and is emitted to the detector module through the rear light path element outside the core bin. Therefore, related elements are located in the functional bin and the core bin respectively, the functional bin is isolated from the core bin, impurities (such as dust) are prevented from being exchanged between the functional bin and the core bin, the waterproof and dustproof effects are achieved, and the impurities cannot affect optical elements in the core bin and the functional bin.

Description

Technical Field

[0001] This application relates to testing equipment, and more particularly to spectrometers. Background Technology

[0002] A spectrometer is a scientific instrument used to measure the emission, transmission, reflection, or absorption spectra of a sample. It uses an interferometer module to convert light emitted from a light source into interference light, which is then directed onto the sample. A detector module captures this interference light carrying sample information, or the light carrying sample information is directly converted into interference light by the interferometer module and then captured by the detector module. The detector module converts the interference light signal carrying sample information into an electrical signal, which is then subjected to a Fourier transform by computer software to finally generate a spectrum. This instrument is widely used in chemistry, materials science, biomedicine, and other fields to detect and analyze molecular structures, compound compositions, and biomolecules.

[0003] The aforementioned spectrometers typically include a housing and multiple core optical components. These core optical components are the parts used to implement core functions, such as fiber optic coupling interface modules, collimation modules, interferometers, focusing modules, and detector modules. Assembling multiple core optical components within the same cavity makes it easy for impurities (such as dust) to exchange between modules, affecting the performance of the corresponding modules (such as interferometer modules), and consequently reducing the detection accuracy of the spectrometer. Utility Model Content

[0004] The purpose of this application is to disclose a spectrometer that makes it less likely for impurities to reduce the accuracy of spectrometer detection.

[0005] This application discloses a spectrometer. The spectrometer includes a housing, an interferometer module, an external front optical path element, an external rear optical path element, and a detector module. The housing includes a sealed and isolated core compartment and a functional compartment, with the interferometer module housed within the core compartment. The functional compartment includes the external front optical path element, the external rear optical path element, and the detector module. The external front optical path element directs light from a light source into the core compartment, and the interferometer module receives the light from the external front optical path element. The outgoing light from the interferometer module exits the core compartment and passes through the external rear optical path element before reaching the detector module.

[0006] In some embodiments, the spectrometer includes a substrate and a substrate sealing ring. The external front optical path element, the interferometer module, the external rear optical path element, and the detector module are all assembled on the substrate to form a substrate module. The substrate serves as a common wall for the core compartment and the functional compartments. The substrate sealing ring is sealed to the substrate and the shell.

[0007] In some embodiments, the housing includes a cavity with an opening; the base plate module moves in and out of the cavity through the opening in a push-pull drawer manner.

[0008] In some embodiments, the housing includes a housing body and a cover plate, the housing body including a cavity with an opening; the spectrometer includes an opening sealing ring, the cover plate covering the opening, the opening sealing ring being located between the housing body and the cover plate to seal the opening.

[0009] In some embodiments, when the substrate sealing ring is disposed on the substrate, the substrate includes a groove in the circumferential direction, and the substrate sealing ring is located in the groove.

[0010] In some embodiments, along the direction from the functional compartment to the core compartment, the inner wall mating surface formed by the substrate sealing ring and the inner wall of the housing, and the substrate mating surface formed by the substrate sealing ring and the substrate, respectively include multiple bends.

[0011] In some embodiments, the spectrometer includes an optical fiber coupling interface module assembled on the substrate, which inputs the light source outside the spectrometer to the external front optical path element.

[0012] In some embodiments, the spectrometer includes a partition and a circuit compartment for housing a circuit board, the partition serving as a common sidewall for the circuit compartment and the functional compartment; the partition has a partition connection window; the spectrometer includes a mating connector and a partition sealing ring; the mating connector is located at the partition connection window, and the partition sealing ring is located between the mating connector and the partition, sealing the partition connection window.

[0013] In some embodiments, the spectrometer includes an optical fiber coupling interface module; the housing includes a cover plate for forming the functional compartment, the cover plate including a cover plate connection window; the spectrometer includes an interface flange and a flange sealing ring, the interface flange being mounted on the cover plate, the flange sealing ring being located between the interface flange and the cover plate, and sealing the cover plate connection window.

[0014] In some embodiments, the interface flange includes a flange hole; the fiber optic coupling interface module includes a fiber optic interface, which is inserted into the flange hole; the spectrometer includes an interface sealing ring, wherein there is only one interface sealing ring, which is located inside the flange hole and seals the gap between the flange hole wall and the fiber optic interface; or, there are at least two interface sealing rings, which are located inside the flange hole and seal the gap between the flange hole wall and the fiber optic interface, and are spaced apart along the insertion direction of the fiber optic interface.

[0015] In some embodiments, the spectrometer includes a placement device located within the core compartment for holding a desiccant.

[0016] In some embodiments, the core compartment wall includes mounting holes, and the spectrometer includes a mounting hole flange and a mounting hole sealing ring; the placement component passes through the mounting holes and is connected to the mounting hole flange. There is only one mounting hole sealing ring, located between the mounting hole flange and the core compartment wall, sealing the mounting hole. Alternatively, there are at least two mounting hole sealing rings, located between the mounting hole flange and the core compartment wall, spaced apart along the depth direction of the mounting hole, sealing the mounting hole. Alternatively, there are at least two mounting hole sealing rings arranged concentrically, all of which are located between the mounting hole flange and the core compartment wall, sealing the mounting holes.

[0017] For the spectrometer, since the spectrometer housing includes a sealed and isolated core compartment and a functional compartment, the core compartment contains the interferometer module, and the functional compartment contains the external front optical path element, the external rear optical path element, and the detector module. The functional compartment and the core compartment are isolated from each other, which prevents the exchange of impurities (such as dust) between the functional compartment and the core compartment, and plays a role in waterproofing and dustproofing. Impurities will not affect the optical elements inside the core compartment and the functional compartment, especially the optical elements inside the core compartment (such as the interferometer module), ultimately ensuring the detection accuracy of the spectrometer. Attached Figure Description

[0018] Figure 1 This is an exploded view of the spectrometer of this application; the core optical components are not shown on the substrate.

[0019] Figure 2 This is a schematic diagram of the substrate module of this application assembled in the housing;

[0020] Figure 3 yes Figure 2 The exploded view of the baseboard module and the housing is shown.

[0021] Figure 4 This is a schematic diagram of the assembly consisting of the housing and related components of this application;

[0022] Figure 5 This is a schematic diagram of the substrate module of this application;

[0023] Figure 6 This is an exploded view of the spectrometer of this application, excluding the substrate module and circuit compartment assembly;

[0024] Figure 7 This is a schematic diagram of the substrate mating surface formed by the substrate sealing ring and the substrate in this application;

[0025] Figure 8 This is a schematic diagram of the interface flange, cover plate and fiber optic interface assembled together. Detailed Implementation

[0026] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0027] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0028] See Figures 1 to 3 as well as Figure 6 This application discloses a spectrometer. The spectrometer includes a housing 2, an interferometer module 104, an external front optical path element, an external rear optical path element, and a detector module 107. The housing 2 includes a sealed and isolated core compartment 201 and a functional compartment 202. Figures 1 to 6 The complete core compartment 201 and functional compartment 202 cannot be marked in the text. Therefore, in this embodiment, the core compartment 201 is marked at the constituent part (core cavity 2111) of the core compartment 201, and the functional compartment 202 is marked at the constituent part (functional cavity 2112) of the functional compartment 202. The following describes in more detail the configuration of the core compartment 201 and the functional compartment 202:

[0029] The housing 2 includes a main body 21, a partition 22, and a cover 23. The partition 22 is also a cover, but in this embodiment, it is named for separating the functional compartment 202 from the circuit compartment. The spectrometer includes a circuit compartment assembly 9, which includes a circuit compartment and a circuit board. In other embodiments, the circuit compartment assembly may be omitted, and the circuit board, etc., may be located within the functional compartment 202. The main body 21 is through-hole and includes a cavity 211, which includes two openings. In some embodiments, the cavity 211 is integrally formed by the main body 21 and the cover 23, or by the main body 21 and the partition 22. The spectrometer also includes a substrate module 1. The substrate module 1 includes a substrate 11 and, mounted on the substrate 11, an optical fiber insertion interface module 101, an external front optical path element (collimation module 102), an insertion folding module 103, an interferometer module 104, an output folding module 105, an external rear optical path element (focusing module 106), and a detector module 107. After the substrate module 1 is placed entirely into the housing body 21, the substrate 11 divides the cavity 211 into a core cavity 2111 and a functional cavity 2112. Subsequently, a partition 22 and a cover plate 23 respectively cover the core cavity 2111 and the functional cavity 2112, thus forming the core compartment 201 and the functional compartment 202. After assembly, the core compartment 201 includes the interferometer module 104. Of course, in this embodiment, the core compartment 201 also includes the insertion folding module 103 and the output folding module 105. In some spectrometers, the core compartment 201 does not include the coupling-in deflection module 103 and the coupling-out deflection module 105. The functional compartment 202 includes the fiber optic coupling-in interface module 101, the external front optical path element (collimation module 102), the external rear optical path element (focusing module 106), and the detector module 107. Based on the functions of the core compartment 201 and the functional compartment 202, their configuration is not limited to the structures described above.

[0030] The method of sealing and isolating the core compartment 201 and the functional compartment 202 is not limited. For example, it can be achieved by a sealing ring, a sealant, or by an interlocking structure at the intersection of the core compartment and the functional compartment (without using a sealing ring or sealant).

[0031] The interferometer module, the external front optical path element, the external rear optical path element, and the detector module are described below:

[0032] Interferometer module 104 typically includes a Michelson interferometer, which can be selected from plane mirror type, corner mirror type, corner mirror type, and plane mirror type. For a plane mirror type Michelson interferometer, it includes a beam splitter, at least one fixed plane mirror, and at least one moving plane mirror; wherein, at least one moving plane mirror can translate along the optical axis. For a corner mirror type Michelson interferometer, it includes a beam splitter, at least one fixed hollow retroreflection corner mirror, and at least one moving hollow retroreflection corner mirror; wherein, at least one moving hollow retroreflection corner mirror can translate along the optical axis. For a corner mirror type Michelson interferometer, it includes a beam splitter, at least two hollow retroreflection corner mirrors that are mirror-symmetrical with respect to the plane of the beam splitter, and optionally several plane mirrors; wherein, the two hollow retroreflection corner mirrors that are mirror-symmetrical with respect to the plane of the beam splitter can rotate relative to the midpoint of their connecting line. A plane mirror-type rotating Michelson interferometer includes a beam splitter, at least one pair of plane mirrors that are always parallel and can rotate as a whole, and optionally several fixed plane mirrors. Alternatively, a Mach-Zehnder interferometer can be used, which includes two beam splitters and at least two plane mirrors; wherein at least one plane mirror is translatable along the optical axis.

[0033] The external optical path element is located outside the core chamber 201, referencing the core chamber 201, and directs light from a light source into optical components within the core chamber 201. The "light source" includes the following: a) the light source is located inside the spectrometer (e.g., inside the functional chamber described later), such as an infrared light source, and the number of light sources is unlimited; b) the light source is located outside the spectrometer, and is input to the external optical path element via the fiber optic coupling interface module 101. The external optical path element may include, for example, a collimation module 102. The collimation module 102 is used to collimate the light from the light source. The outgoing light from the collimation module 102 enters the coupling deflection module 103 within the core chamber 201 and then is directed towards the interferometer module 104. The collimation module 102 can be a parabolic mirror, such as an off-axis parabolic mirror. In cases where it is not necessary to change the propagation direction of the emitted light from the collimation module 102, the external optical path element does not include a deflection module located between the collimation module 102 and the coupling deflection module 103. In cases where it is necessary to change the propagation direction of the emitted light from the collimation module 102, the external optical path element includes a deflection module disposed between the collimation module 102 and the coupling deflection module 103. Due to cost and size considerations of the spectrometer, only one deflection module is included between the collimation module 102 and the coupling deflection module 103. Of course, if the spectrometer does not include the coupling deflection module 103, the external optical path element may include a deflection module disposed between the collimation module 102 and the interferometer module 104.

[0034] The external optical path element includes optical components located outside the core chamber 201 that direct the outgoing light rays from the interferometer module 104 and the core chamber 201 toward the detector module 107. For example, the external optical path element includes a focusing module 106. The focusing module 106 focuses the light rays emitted from the core chamber 201 (from the coupling deflection module 105), and the outgoing light rays from the focusing module 106 are directed toward the detector module 107. The structure of the focusing module 106 is not limited, and may include, for example, a parabolic mirror. The type of the detector module 107 is not limited; for example, the detector module 107 may be an infrared detector. When it is not necessary to change the propagation direction of the outgoing light rays from the coupling deflection module 105, the external optical path element does not include a deflection module disposed between the coupling deflection module 105 and the focusing module 106. Correspondingly, when it is necessary to change the propagation direction of the light rays, the external optical path element includes a deflection module disposed between the coupling deflection module 105 and the focusing module 106. Due to cost and size considerations of the spectrometer, the external optical path components may consist of only one deflection module located between the coupling deflection module 105 and the focusing module 106.

[0035] As described above, the spectrometer housing 2 includes a sealed and isolated core chamber 201 and a functional chamber 202. The core chamber 201 includes the interferometer module 104. The functional chamber 202 includes the external front optical path element, the external rear optical path element, and the detector module. The functional chamber 202 and the core chamber 201 are isolated from each other, preventing the exchange of impurities (such as dust) between the functional chamber 202 and the core chamber 201, thus providing waterproof and dustproof protection. Impurities will not affect the optical elements inside the core chamber 201 and the functional chamber 202, especially the optical elements inside the core chamber 201 (such as the interferometer module 104), ultimately ensuring the detection accuracy of the spectrometer.

[0036] See Figures 2 to 5The fiber optic coupling interface module 101, the external front optical path element (collimation module 102), the coupling-in folding module 103, the interferometer module 104, the coupling-out folding module 105, the external rear optical path element (focusing module 106), and the detector module 107 are all assembled on the substrate 11, constituting substrate module 1. In some cases, substrate module 1 does not include the fiber optic coupling interface module 101, the coupling-in folding module 103, and the coupling-out folding module 105. The above modules are distributed on opposite sides of substrate 11, or they can all be located on the same side of substrate 11. The substrate 11 serves as the common wall of the core compartment 201 and the functional compartment 202. The substrate module 1 also includes a substrate sealing ring 12. After the substrate module 1 is installed inside the housing 2, the substrate sealing ring 12 is sealed to the housing 2. In some embodiments, the substrate module 1 does not include the substrate sealing ring 12; that is, the substrate sealing ring 12 is disposed on the housing 2, and after the substrate module 1 is assembled into the housing 2, the substrate sealing ring 12 is sealed to the substrate 11. In yet another embodiment, the substrate sealing ring 12 is not disposed on either the substrate 11 or the housing 2; after the substrate module 1 is assembled into the housing 2, the substrate sealing ring 12 is then assembled so that the substrate sealing ring 12 seals the gap between the substrate 11 and the housing 2, thereby sealing and isolating the core compartment 201 and the functional compartment 202.

[0037] As described above, by combining the relevant optical elements with the substrate 11 to form a substrate module 1, the substrate 11 serves as the common wall of the core compartment 201 and the functional compartment 202. The substrate sealing ring 12 is then used to seal the substrate 11 and the housing 2 to isolate the core compartment 201 and the functional compartment 202. The sealing is simple and also facilitates the assembly of the optical elements of the spectrometer.

[0038] See Figures 1 to 4 and Figure 6 In this application, the shell body 21 is through-shaped, resulting in the cavity 211 including two openings; that is, the shell 2 includes two openings. In other embodiments, the shell 2 may have only one opening, for example, the cover plate 23 is integrally formed with the shell body 21. In either case, the shell 2 includes a cavity 211 with an opening. In this case, the base plate module 1 moves in and out of the cavity 211 through the opening using a push-pull drawer method. See [reference needed] for the direction of movement. Figure 3 As indicated by arrows R and r. In other embodiments, the baseboard module 1 may not be assembled using a push-pull drawer method; for example, in... Figure 3In the shown state, the substrate module 1 is inserted along a direction perpendicular to Rr. At this time, the core compartment 201 and the functional compartment 202 change. The location of the substrate module 1 within the housing 2 is not limited; for example, a support platform 213 is provided within the housing body 21. The support platform 213 is provided with a heat insulation pad 3. The edge of the substrate 11 is located on the support platform 213 and is supported by it. The heat insulation pad 3 also helps to reduce heat transfer from the housing 2 to the substrate module 1.

[0039] As described above, the baseboard module 1 enters and exits the cavity 211 through the opening by means of a push-pull drawer, which facilitates the assembly and maintenance of the baseboard module 1, and also facilitates the sealing of the core compartment 201 and the functional compartment 202.

[0040] See Figure 1 The spectrometer includes an opening sealing ring. In this application, the shell body 21 is through-shaped, and the cover plate of the shell 2 includes a partition 22 and a cover plate 23. Thus, there are two opening sealing rings, which are named partition-to-partition sealing ring 13 and cover-to-cover sealing ring 14 for easy distinction. The partition-to-partition sealing ring 13 is located between the shell body 21 and the partition 22, sealing one of the openings; the cover-to-cover sealing ring 14 is located between the shell body 21 and the cover plate 23, sealing the other opening. When the shell body 21 has only an opening, there is only one opening sealing ring. Regardless of the number of openings in the shell 2, the opening sealing ring seals both the interior and exterior of the shell 2.

[0041] As described above, the opening of the housing 2 is sealed by the opening sealing ring, preventing communication between the inside and outside of the housing 2. This achieves the requirements of waterproofing and dustproofing, making it difficult for impurities (dust) to enter the housing 2. It also helps to prevent the exchange of impurities between the core compartment 201 and the functional compartment 202 inside the housing 2.

[0042] See Figure 1 The substrate 11 includes a slot 111 along the circumferential direction, and the substrate sealing ring 12 is located within the slot 111. According to... Figure 3 The sealing ring 12 of the middle substrate is located in the state of the substrate 11, and will Figure 3 and Figure 1 and Figure 5 By comparison, technicians can more intuitively understand the position and structure of the card slot 111. Thus, when the substrate sealing ring 12 is a component of the substrate module 1, and the substrate module 1 is located inside the housing 2, the substrate sealing ring 12 isolates the core compartment 201 from the functional compartment 202.

[0043] As described above, the substrate 11 includes a slot along the circumferential direction, and the substrate sealing ring 12 is located in the slot. After the substrate module 1 is assembled into the housing 2, the core compartment 201 and the functional compartment 202 can be sealed, which can prevent impurities from being exchanged between the core compartment 201 and the functional compartment 202.

[0044] See Figure 7 and combined Figure 2 Along the direction from the core compartment 201 to the functional compartment 202, or along the direction from the functional compartment 202 to the core compartment 201, the inner wall mating surface formed by the substrate sealing ring 12 and the inner wall of the housing 2, and the substrate mating surface 120 formed by the substrate sealing ring 12 and the substrate 11, respectively include multiple bends 1201. Figure 7 The diagram shows eight turns (1201).

[0045] As described above, both the inner wall mating surface and the substrate mating surface 120 have multiple bends 1201, which makes the path between the core compartment 201 and the functional compartment 202 longer, resulting in better sealing and making it less likely for impurities to exchange between the core compartment 201 and the functional compartment 202. Based on the function of the bends 1201 on the inner wall mating surface and the substrate mating surface, the shape of the bends is not limited, as long as they lengthen the path from the core compartment 201 to the functional compartment 202.

[0046] See Figure 1 and Figure 6 The spectrometer includes a circuit compartment assembly 9, which includes a circuit board and a circuit compartment for housing the circuit board. The circuit compartment includes a circuit cavity 91 formed by a circuit compartment body 911 and a circuit compartment end plate 912. The spectrometer includes a partition 22. The partition 22 serves as a common sidewall for the circuit compartment and the functional compartment 202. The partition 22 includes a partition connection window 221. Figure 1 Two partition connection windows 221 are shown, but the number of partition connection windows 221 is unlimited.

[0047] The spectrometer includes a mating connector 222 and a partition sealing ring 223. In this application, the mating connector 222 is a mating circuit board, but it is not limited to this; it can connect a circuit board in the circuit compartment to components in the core compartment 201, and / or components in the functional compartment 202, to transmit electrical signals. The mating connector 222 is located at the partition connection window 221, and the partition sealing ring 223 is located between the mating connector 222 and the partition 22, sealing the partition connection window 221.

[0048] As described above, the partition sealing ring 223 is located between the mating connector 222 and the partition 22, sealing the partition connection window 221. This seals the circuit compartment and the functional compartment 202, preventing the exchange of impurities between the circuit compartment and the functional compartment, and consequently preventing the accumulation of impurities within the functional compartment 202. Based on this design, the circuit compartment does not require a waterproof or dustproof rating, which also helps reduce the cost of the spectrometer.

[0049] See Figures 1 to 4 The spectrometer includes an optical fiber coupling interface module 101. The optical fiber coupling interface module 101 includes an optical fiber interface 1011. The housing 2 includes a cover plate (cover plate 23) for forming the functional compartment 202. The cover plate 23 can be integrally formed with the housing body 21, or it can be assembled with the housing body 21 as a separate component. The cover plate 23 includes a cover plate connection window 230. The spectrometer includes an interface flange 25 and a flange sealing ring 231. The interface flange 25 is installed on the cover plate (cover plate 23), and the flange sealing ring 231 is located between the interface flange 25 and the cover plate, sealing the cover plate connection window 230.

[0050] As described above, since the flange sealing ring 231 is located between the interface flange 25 and the cover plate and seals the cover plate connection window 230, it seals the structure of the functional compartment 202 from the outside world, which helps to prevent impurities from the outside of the spectrometer from entering the functional compartment 202.

[0051] See Figure 1 and Figure 8 The interface flange 25 includes a flange hole 251. The fiber optic coupling interface module 101 includes a fiber optic interface 1011, which is inserted into the flange hole 251. The spectrometer includes interface sealing rings 232. There are two interface sealing rings 232, located within the flange hole 251, sealing the gap between the flange hole 251 and the fiber optic interface 1011, and they are spaced apart along the insertion direction of the fiber optic interface 1011 of the fiber optic coupling interface module 101. In some embodiments, there may be more than two interface sealing rings 232, but they are still spaced apart along the insertion direction of the fiber optic interface 1011 of the fiber optic coupling interface module 101. In still other embodiments, there is only one interface sealing ring 232, located within the flange hole 251, sealing the gap between the flange hole 251 and the fiber optic interface 1011.

[0052] As described above, the interface sealing ring 232 is located inside the flange hole 251 and seals the gap between the flange hole 251 and the optical fiber interface 1011, providing an axial seal. Combined with the flange sealing ring 231 sealing the cover plate connecting window 230, the optical fiber coupling interface module 101 is sealed in both the axial and radial directions. This effectively prevents impurities (dust, etc.) from entering the spectrometer and meets the dustproof and waterproof requirements of the functional compartment 202.

[0053] See Figure 1 and Figure 6 The spectrometer includes a desiccant placement unit 212 located within the core compartment 201.

[0054] As described above, the core chamber 201 can be dried by placing a desiccant in the placement component 212. Since the placement component 212 is only located within the core chamber 201, unlike spectrometers which lack compartmentalized designs and allow for drying of the entire internal space of the spectrometer, the area to be dried is reduced compared to drying the area containing the interferometer module 104. This helps lower the manufacturing cost of the spectrometer.

[0055] See Figure 1 and Figure 6 The core compartment 201 has a wall with mounting holes 210, and the spectrometer includes mounting hole sealing rings 214 and mounting hole flanges 215. The placement component 212 passes through the mounting holes 210 and is connected to the mounting hole flanges 215. The mounting hole flanges 215 can have any structure to connect to the wall of the core compartment. There are two mounting hole sealing rings 214; in some cases, there may be more than two. When there are at least two mounting hole sealing rings 214, they are located between the mounting hole flanges 215 and the wall of the core compartment 201, spaced apart along the depth direction of the mounting holes 210. (See depth direction for reference.) Figure 1 As indicated by arrow R, which is the length direction of the placement member 212, and seals the mounting hole 210. In some other embodiments, at least two mounting hole sealing rings 214 are arranged concentrically (e.g., Figure 1 Different sizes, can be along Figure 1(As indicated by arrow r, they are distributed in concentric circles). All the mounting hole sealing rings 214 are located between the mounting hole flange 215 and the wall of the core compartment 201, sealing the mounting hole 210. In some embodiments, there is only one mounting hole sealing ring 214, located between the mounting hole flange 215 and the wall of the core compartment 201, sealing the mounting hole 210. The mounting hole sealing ring 214 being located between the mounting hole flange 215 and the wall of the core compartment 201 includes the following situations: a) The mounting hole flange 215 is provided with mounting grooves, and the number of mounting grooves is equal to the number of mounting hole sealing rings 214. When there are multiple mounting grooves and multiple mounting hole sealing rings 214, the mounting hole sealing rings 214 are located one-to-one in the mounting grooves. When there is only one mounting hole sealing ring 214 and only one mounting groove, the mounting hole sealing ring 214 is located in the mounting groove. b) The core compartment 201 has mounting slots on its walls. The number of mounting slots is equal to the number of mounting hole sealing rings. The assembly method of the mounting slots and mounting hole sealing rings is the same as that of the mounting slots and mounting hole sealing rings 214 in a above, and will not be repeated here.

[0056] As described above, the mounting hole sealing ring 214 is located between the mounting hole flange 215 and the wall of the core compartment 201, sealing the mounting hole 210. This prevents the interior of the core compartment 201 from communicating with the outside, fulfilling its waterproof requirement and effectively preventing impurities from entering. With at least two mounting hole sealing rings 214 arranged concentrically, assembly of the mounting hole sealing rings 214, the mounting hole flange 215, and the placement component 212 is simple and convenient.

[0057] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A spectrometer, characterized by, The spectrometer includes a housing, an interferometer module, an external front optical path element, an external rear optical path element, and a detector module, wherein: The housing includes a sealed and isolated core compartment and a functional compartment. The core compartment contains the interferometer module. The functional compartment contains the external front optical path element, the external rear optical path element, and the detector module. The external front optical path element directs light from the light source into the core chamber, and the interferometer module receives the light from the external front optical path element; the outgoing light from the interferometer module exits the core chamber and passes through the external rear optical path element before heading towards the detector module.

2. The optical spectrometer of claim 1, wherein, The spectrometer includes a substrate and a substrate sealing ring; the external front optical path element, the interferometer module, the external rear optical path element and the detector module are all assembled on the substrate to form a substrate module; the substrate serves as the common wall of the core compartment and the functional compartment; the substrate sealing ring is sealed to the substrate and the shell.

3. The optical spectrometer of claim 2, wherein, The housing includes a cavity with an opening; the base plate module moves in and out of the cavity through the opening using a push-pull drawer mechanism. And / or, the housing includes a housing body and a cover plate, the housing body including a cavity with an opening; the spectrometer includes an opening sealing ring, the cover plate covering the opening, the opening sealing ring being located between the housing body and the cover plate to seal the opening.

4. The optical spectrometer of claim 2, wherein, When the substrate sealing ring is disposed on the substrate, the substrate includes a groove in the circumferential direction, and the substrate sealing ring is located in the groove.

5. The spectrometer according to claim 2, characterized in that, Along the direction from the functional compartment to the core compartment, the inner wall mating surface formed by the substrate sealing ring and the inner wall of the shell, and the substrate mating surface formed by the substrate sealing ring and the substrate, respectively include multiple bends. And / or, the spectrometer includes an optical fiber coupling interface module, which is assembled on the substrate to input the light source outside the spectrometer to the external front optical path element.

6. The optical spectrometer of claim 1, wherein, The spectrometer includes a partition and a circuit compartment for accommodating circuit boards, the partition serving as a common sidewall for the circuit compartment and the functional compartment; the partition is provided with a partition connection window; The spectrometer includes a mating connector and a partition sealing ring; the mating connector is located at the partition connection window, and the partition sealing ring is located between the mating connector and the partition, sealing the partition connection window.

7. The optical spectrometer of claim 1, wherein, The spectrometer includes an optical fiber coupling interface module; the housing includes a cover plate for forming the functional compartment, and the cover plate includes a cover plate connection window; The spectrometer includes an interface flange and a flange sealing ring. The interface flange is installed on the cover plate, and the flange sealing ring is located between the interface flange and the cover plate, sealing the connection window of the cover plate.

8. The optical spectrometer of claim 7, wherein, The interface flange includes a flange hole; the fiber optic coupling interface module includes a fiber optic interface, which is inserted into the flange hole. The spectrometer includes an interface sealing ring, there is only one interface sealing ring, which is located inside the flange hole and seals the gap between the flange hole wall and the optical fiber interface; Alternatively, at least two interface sealing rings are located inside the flange hole and seal the gap between the flange hole wall and the optical fiber interface, and are spaced apart along the insertion direction of the optical fiber interface.

9. The optical spectrometer of claim 1, wherein, The spectrometer includes a placement component located in the core compartment for holding a desiccant.

10. The optical spectrometer of claim 9, wherein, The core compartment wall includes mounting holes, and the spectrometer includes a mounting hole flange and a mounting hole sealing ring; the placement component passes through the mounting holes and is connected to the mounting hole flange; There is only one mounting hole sealing ring, which is located between the mounting hole flange and the core compartment wall, and seals the mounting hole; Alternatively, at least two mounting hole sealing rings are located between the mounting hole flange and the core compartment wall, spaced apart along the depth direction of the mounting hole, and seal the mounting hole; Alternatively, at least two mounting hole sealing rings are arranged concentrically, with all of the mounting hole sealing rings located between the mounting hole flange and the core compartment wall, and sealing the mounting hole.

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