Small-angle relative reflection component applied to infrared spectrometer
Through the combined design and the infrared spectrometer reflective component made of aluminum mirror material, the problem of angle inaccuracy in the existing technology is solved, accurate reflectivity measurement at the normal angle is achieved, energy loss is reduced, and measurement accuracy and uniformity are improved.
Patent Information
- Application Number
- CN202422395422.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing technology has a problem of inaccuracy in the design of the focusing beam component of the infrared spectrometer, which affects the accuracy of the reflectivity measurement.
The optical path is adjusted at an approximately normal angle using a combination of a right parabolic mirror, a right small plane reflector, a right large plane reflector, a left parabolic mirror, a left small plane reflector, and a left large plane reflector.
The infrared spectrometer can accurately measure the reflectivity at an angle of 7 degrees under the normal angle, reducing the loss of infrared light energy and improving the accuracy and uniformity of the measurement.
Smart Images
Figure CN223362028U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of infrared spectrometer testing, in particular to a small-angle relative reflection component used in an infrared spectrometer. Background Art
[0002] In today's market, there are many tests on the reflectivity of mirrored or coated samples, and infrared spectrum analysis of their materials or components is also required. For this purpose, a special infrared accessory is needed to be used with an infrared spectrometer. The infrared spectrometer can scan the infrared spectrum of the sample to be tested, and then measure its reflectivity based on the absorption wavelength spectrum position of the infrared spectrum. Utility Model Content
[0003] In view of this, the present invention aims to propose a small-angle relative reflection component for use in an infrared spectrometer to solve the problem of inaccuracy in the average value of the angles produced by the design of the prior art focusing beam component.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:
[0005] A small-angle relative reflection component for an infrared spectrometer comprises a right parabolic mirror, a right small plane reflector, a right large plane reflector, a left parabolic mirror, a left small plane reflector and a left large plane reflector, wherein the right parabolic mirror, the right small plane reflector, the left parabolic mirror and the left small plane reflector are fixedly mounted on a vertical plate, the right large plane reflector and the left large plane reflector are floatingly mounted on the vertical plate, the right parabolic mirror and the left parabolic mirror are arranged opposite to each other, the right small plane reflector and the left small plane reflector are arranged opposite to each other, the right large plane reflector and the left large plane reflector are arranged opposite to each other, a to-be-tested object is placed on the right large plane reflector and the left large plane reflector, and the to-be-tested object is located between the right large plane reflector and the left large plane reflector, and infrared light can be incident on the to-be-tested object via the right large plane reflector, the right small plane reflector and the right parabolic mirror in sequence, and then emitted via the left parabolic mirror, the left small plane reflector and the left large plane reflector in sequence after being reflected by the to-be-tested object.
[0006] Furthermore, the right parabolic mirror and the left parabolic mirror are made of aluminum mirror material.
[0007] Furthermore, the vertical plate is fixedly mounted to the base plate, and a shell is mounted on the base plate, and the vertical plate, right parabolic mirror, right small plane reflector, right large plane reflector, left parabolic mirror, left small plane reflector and left large plane reflector are respectively located in the shell.
[0008] Furthermore, openings are respectively provided on both sides of the shell, and infrared light enters through one opening and exits through the other opening.
[0009] Furthermore, a mounting opening is provided at the upper end of the housing, an aperture plate is provided on the mounting opening, and the piece to be tested is mounted on the aperture plate.
[0010] Furthermore, the right large plane reflector and the left large plane reflector are respectively rotatably connected to the vertical plate through a rotating shaft, an abutment plate is set on the periphery of the rotating shaft, and a wedge-shaped opening is provided on the abutment plate. Each rotating shaft corresponds to a first adjustment bolt, and the first adjustment bolt is threadedly connected to the vertical plate, and the end of the first adjustment bolt can abut against the wedge-shaped opening.
[0011] Furthermore, a connecting plate is provided on the periphery of each rotating shaft, and the connecting plates are connected to each other via a first tension spring.
[0012] Furthermore, a first mounting groove is provided at one end of each rotating shaft, an axle pin is provided in the first mounting groove, one end of the right large plane reflector and the left large plane reflector are respectively installed with a base, a second mounting groove is provided at one end of the base, the outer periphery of the axle pin abuts against the second mounting groove, one side of the base is connected to the end of the rotating shaft through a second tension spring, and a through hole is provided on the base, and a threaded hole is provided on the rotating shaft, one end of the second adjusting bolt is threadedly connected to the threaded hole, and the outer periphery of the second adjusting bolt is located in the through hole, one end of the second adjusting bolt abuts against one end of the base, and the second adjusting bolt and the second tension spring are respectively located on both sides of the axle pin.
[0013] Furthermore, a plurality of supporting columns are provided on the vertical plate, and a frame plate is provided on one side of the vertical plate, and a supporting hole is provided on the frame plate, each supporting column is sleeved in a supporting hole, and an adapting hole is provided on the frame plate, the periphery of the rotating shaft is located in the adapting hole, and an adapting groove is provided on the side of the frame plate away from the vertical plate, and the peripheries of the right large plane reflector and the left large plane reflector are respectively located in an adapting groove, and the width of the adapting groove is greater than the width of the right large plane reflector and the left large plane reflector.
[0014] Compared with the prior art, the small-angle relative reflective component used in an infrared spectrometer described in the present invention has the following beneficial effects:
[0015] (1) The utility model describes a small-angle relative reflective component for an infrared spectrometer, wherein the internal optical path is configured as a right large plane reflector, a right small plane reflector, a right parabolic mirror, a left parabolic mirror, a left small plane reflector, and a left large plane reflector, which can make the convergent light spot of the infrared spectrometer close to a small angle of the normal, such as a 7-degree angle test sample surface reflectivity spectrum under the normal angle.
[0016] (2) The utility model describes a small-angle relative reflective component used in an infrared spectrometer. The right parabolic mirror and the left parabolic mirror are made of aluminum mirror material. The aluminum mirror molding is used to ensure the accuracy and smoothness of the surface shape. The large-diameter design reduces the energy loss of infrared light.
[0017] (3) The utility model describes a small-angle relative reflection component used in an infrared spectrometer, wherein the base plate supports the entire frame and serves to fix other components, and the shell serves to support the aperture plate and protect it from dust. The aperture plate is provided on the mounting port of the shell, and the test piece is mounted on the aperture plate.
[0018] (4) The small-angle relative reflective component used in the infrared spectrometer described in the present invention can adjust the angle of the right large plane reflector and the left large plane reflector on the rotating shaft relative to the vertical plate through the first adjusting bolt, and can adjust the pitch of the right large plane reflector and the left large plane reflector on the rotating shaft relative to the vertical plate through the second adjusting bolt to meet the optical path adjustment requirements of the large plane reflectors. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:
[0020] Figure 1 This is a schematic diagram of the internal structure of a small-angle relative reflection component used in an infrared spectrometer according to an embodiment of the present utility model;
[0021] Figure 2 This is a schematic structural diagram of a small-angle relative reflective component used in an infrared spectrometer according to an embodiment of the present utility model;
[0022] Figure 3 This is a schematic diagram of the structure of installing a right large plane reflector on a vertical plate through a rotating shaft according to an embodiment of the present utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the cooperation between the rotating shaft and the right large flat reflector according to an embodiment of the present utility model;
[0024] Figure 5 This is a schematic structural diagram of the rotating shaft according to an embodiment of the present utility model;
[0025] Figure 6 This is a front view schematic diagram of a first tension spring relative to a reflective component at a small angle used in an infrared spectrometer according to an embodiment of the present utility model;
[0026] Figure 7 This is a schematic diagram of the incident light path of a small-angle relative reflective component used in an infrared spectrometer according to an embodiment of the present utility model.
[0027] Description of reference numerals:
[0028] 1-right parabolic mirror; 2-right small plane reflector; 3-right large plane reflector; 4-left parabolic mirror; 5-left small plane reflector; 6-left large plane reflector; 7-base plate; 8-housing; 9-vertical plate; 10-mirror frame plate; 11-rotating shaft; 12-first tension spring; 13-abutment plate; 14-adjusting bolt; 15-connecting plate; 16-axle pin; 17-second adjusting bolt; 18-support column; 19-adapter slot; 20-aperture plate; 21-base. DETAILED DESCRIPTION
[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.
[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0033] like Figure 1-Figure 7As shown, a small-angle relative reflection component for an infrared spectrometer includes a right parabolic mirror 1, a right small plane reflector 2, a right large plane reflector 3, a left parabolic mirror 4, a left small plane reflector 5 and a left large plane reflector 6, and the right parabolic mirror 1, the right small plane reflector 2, the left parabolic mirror 4 and the left small plane reflector 5 are fixedly mounted on a vertical plate 9, the right large plane reflector 3 and the left large plane reflector 6 are floatingly mounted on the vertical plate 9, and the right parabolic mirror 1 and the left parabolic mirror 4 are arranged opposite to each other, the right small plane reflector 2 and the left small plane reflector 5 are arranged opposite to each other, the right large plane reflector 3 and the left large plane reflector 6 are arranged opposite to each other, and the right large plane reflector 3 and the left large plane reflector 6 are arranged opposite to each other. A piece to be tested is placed on the plane reflector 6, and the piece to be tested is located between the right large plane reflector 3 and the left large plane reflector 6. Infrared light can be incident on the piece to be tested through the right large plane reflector 3, the right small plane reflector 2 and the right parabolic mirror 1 in sequence, and after being reflected by the piece to be tested, it is emitted through the left parabolic mirror 4, the left small plane reflector 5 and the left large plane reflector 6 in sequence. The internal optical path is set to the right large plane reflector 3, the right small plane reflector 2, the right parabolic mirror 1, the left parabolic mirror 4, the left small plane reflector 5 and the left large plane reflector 6. The convergent light spot of the infrared spectrometer can be close to a small angle of the normal, such as a 7-degree angle test sample surface reflectivity spectrum under the normal angle.
[0034] The right parabolic mirror 1 and the left parabolic mirror 4 are made of aluminum mirror material. The aluminum mirror molding is used to ensure the accuracy and smoothness of the surface shape. The large-aperture design reduces the energy loss of infrared light.
[0035] Riser 9 is fixedly mounted to base plate 7, and housing 8 is mounted on base plate 7. Riser 9, right parabolic mirror 1, right small facet reflector 2, right large facet reflector 3, left parabolic mirror 4, left small facet reflector 5, and left large facet reflector 6 are respectively located within housing 8. During implementation, base plate 7 supports the entire framework and serves to secure other components. The housing supports aperture plate 20 and provides dust protection. Openings are provided on either side of housing 8. Infrared light enters through one opening and exits through the other. A mounting port is provided at the top of housing 8, on which aperture plate 20 is mounted. The object to be tested is mounted to aperture plate 20.
[0036] The right large plane reflector 3 and the left large plane reflector 6 are respectively rotatably connected to the vertical plate 9 through a rotating shaft 11. An abutment plate 13 is set on the periphery of the rotating shaft 11, and a wedge-shaped opening is provided on the abutment plate 13. Each rotating shaft 11 corresponds to a first adjusting bolt 14, and the first adjusting bolt 14 is threadedly connected to the vertical plate 9. The end of the first adjusting bolt 14 can abut against the wedge-shaped opening. A connecting plate 15 is set on the periphery of each rotating shaft 11, and the two connecting plates 15 are connected by a first tension spring 12. The relative angle of the two rotating shafts 11 can be stretched by the first tension spring 12, and the angle of the right large plane reflector 3 and the left large plane reflector 6 on the rotating shaft 11 relative to the vertical plate 9 can be adjusted through the first adjusting bolt 14 to meet the optical path adjustment of the large plane reflectors.
[0037] One end of each rotating shaft 11 is provided with a first mounting groove, and an axle pin 16 is provided in the first mounting groove. One end of the right large plane reflecting mirror 3 and the left large plane reflecting mirror 6 are respectively installed with a base 21, and one end of the base 21 is provided with a second mounting groove, and the outer periphery of the axle pin 16 abuts against the second mounting groove. One side of the base 21 is connected to the end of the rotating shaft 11 through a second tension spring, and a through hole is provided on the base 21, and a threaded hole is provided on the rotating shaft 11, one end of the second adjusting bolt 1714 is threadedly connected to the threaded hole, and the outer periphery of the second adjusting bolt 1714 is located in the through hole, one end of the second adjusting bolt 1714 abuts against one end of the base 21, and the second adjusting bolt 1714 and the second tension spring are respectively located on both sides of the axle pin 16, and the second adjusting bolt 1714 can be used to adjust the pitch of the right large plane reflecting mirror 3 and the left large plane reflecting mirror 6 on the rotating shaft 11 relative to the vertical plate 9 to meet the optical path adjustment of the large plane reflecting mirrors.
[0038] A plurality of support columns 18 are arranged on the vertical plate 9, and a mirror frame plate 10 is arranged on one side of the vertical plate 9. The mirror frame plate 10 is provided with support holes, and each support column 18 is sleeved in a support hole. An adaptation hole is provided on the mirror frame plate 10, and the outer periphery of the rotating shaft 11 is located in the adaptation hole. An adaptation groove 19 is provided on the side of the mirror frame plate 10 away from the vertical plate 9. The outer peripheries of the right large plane reflector 3 and the left large plane reflector 6 are respectively located in an adaptation groove 19, and the width of the adaptation groove 19 is greater than the width of the right large plane reflector 3 and the left large plane reflector 6, so as to limit the relative position of the right large plane reflector 3 and the left large plane reflector 6, but does not interfere with the adjustment angle of both sides.
[0039] like Figure 7As shown, the incident infrared light is incident from the right side, reflected by the right large plane reflector 3 to the right small plane reflector 2, and the infrared light reflected by the right small plane reflector 2 passes through the right parabola 1, and the infrared light is incident on the upper surface of the aperture plate 20 in an approximately parallel beam at an angle of 7 degrees to the normal. The sample to be tested is placed on the upper surface of the aperture plate 20. The infrared light is reflected by the surface of the sample to be tested to the left parabola 4. After being reflected by the left parabola 4, the infrared light is incident on the left small plane reflector 5. After passing through the left small plane reflector 5, the infrared light is incident on the left large plane reflector 6. After reflection, the infrared light is emitted from the left side.
[0040] A low-angle relative reflectance buildup for infrared spectrometers is featured for measuring sample reflectivity. This buildup produces a collimated beam that illuminates the sample area, allowing reflectivity measurements to be made at a uniform 7-degree angle of incidence, rather than the average angle produced by focused beam attachment designs. At angles close to normal, the effect of polarization on reflectivity is minimized. This buildup can also be used to measure a wide variety of surfaces, including anti-reflection (AR)-coated surfaces and other reflective and non-reflective materials.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A small-angle relative reflective component used in an infrared spectrometer, characterized by: The invention comprises a right parabolic mirror (1), a right small plane reflector (2), a right large plane reflector (3), a left parabolic mirror (4), a left small plane reflector (5) and a left large plane reflector (6), wherein the right parabolic mirror (1), the right small plane reflector (2), the left parabolic mirror (4) and the left small plane reflector (5) are fixedly mounted on a vertical plate (9), the right large plane reflector (3) and the left large plane reflector (6) are floatingly mounted on the vertical plate (9), and the right parabolic mirror (1) and the left parabolic mirror (4) are arranged opposite to each other, and the right small plane reflector (2) and the left small plane reflector (6) are arranged opposite to each other. The reflectors (5) are arranged opposite to each other, the right large plane reflector (3) and the left large plane reflector (6) are arranged opposite to each other, a test piece is placed on the right large plane reflector (3) and the left large plane reflector (6), and the test piece is located between the right large plane reflector (3) and the left large plane reflector (6), and infrared light can be incident on the test piece through the right large plane reflector (3), the right small plane reflector (2) and the right parabolic mirror (1) in sequence, and after being reflected by the test piece, it is emitted through the left parabolic mirror (4), the left small plane reflector (5) and the left large plane reflector (6) in sequence.
2. The small-angle relative reflective component for an infrared spectrometer according to claim 1, characterized in that: The right parabolic mirror (1) and the left parabolic mirror (4) are made of aluminum mirror material.
3. The small-angle relative reflective component for an infrared spectrometer according to claim 1, characterized in that: The vertical plate (9) is fixedly mounted on the bottom plate (7), and a housing (8) is mounted on the bottom plate (7). The vertical plate (9), the right parabolic mirror (1), the right small plane reflector (2), the right large plane reflector (3), the left parabolic mirror (4), the left small plane reflector (5), and the left large plane reflector (6) are respectively located in the housing (8).
4. The small-angle relative reflective component for an infrared spectrometer according to claim 3, characterized in that: Openings are respectively provided on both sides of the housing (8), and infrared light enters through one opening and exits through the other opening.
5. The small-angle relative reflective component for an infrared spectrometer according to claim 3, characterized in that: The upper end of the housing (8) is provided with a mounting opening, an aperture plate (20) is provided on the mounting opening, and the piece to be tested is mounted on the aperture plate (20).
6. The small-angle relative reflective component for an infrared spectrometer according to claim 1, characterized in that: The right large plane reflector (3) and the left large plane reflector (6) are respectively rotatably sleeved onto the vertical plate (9) via a rotating shaft (11); an abutment plate (13) is provided on the periphery of the rotating shaft (11), and a wedge-shaped opening is provided on the abutment plate (13); each rotating shaft (11) corresponds to a first adjustment bolt (14); the first adjustment bolt (14) is threadedly connected to the vertical plate (9), and the end of the first adjustment bolt (14) can abut against the wedge-shaped opening.
7. The small-angle relative reflective component for an infrared spectrometer according to claim 6, characterized in that: A connecting plate (15) is provided on the periphery of each rotating shaft (11), and two connecting plates (15) are connected to each other via a first tension spring (12).
8. The small-angle relative reflective component for an infrared spectrometer according to claim 6, characterized in that: A first mounting groove is provided at one end of each rotating shaft (11), and an axle pin (16) is provided in the first mounting groove. One end of the right large plane reflector (3) and the left large plane reflector (6) are respectively mounted on a base (21). A second mounting groove is provided at one end of the base (21), and the outer periphery of the axle pin (16) abuts against the second mounting groove. One side of the base (21) is connected to the end of the rotating shaft (11) through a second tension spring, and a through hole is provided on the base (21). A threaded hole is provided on the rotating shaft (11), and one end of the second adjusting bolt (17) (14) is threadedly connected to the threaded hole, and the outer periphery of the second adjusting bolt (17) (14) is located in the through hole. One end of the second adjusting bolt (17) (14) abuts against one end of the base (21), and the second adjusting bolt (17) (14) and the second tension spring are respectively located on both sides of the axle pin (16).
9. The small-angle relative reflective component for an infrared spectrometer according to claim 6, characterized in that: A plurality of support columns (18) are provided on the vertical plate (9), and a mirror frame plate (10) is provided on one side of the vertical plate (9). The mirror frame plate (10) is provided with a support hole, and each support column (18) is sleeved in a support hole. The mirror frame plate (10) is provided with an adapting hole, and the periphery of the rotating shaft (11) is located in the adapting hole. An adapting groove (19) is provided on the side of the mirror frame plate (10) away from the vertical plate (9), and the peripheries of the right large plane reflector (3) and the left large plane reflector (6) are respectively located in an adapting groove (19), and the width of the adapting groove (19) is greater than the width of the right large plane reflector (3) and the left large plane reflector (6).