Laser calibration platform for Fourier transform infrared spectrometer

Abstract

The utility model relates to the technical field of Fourier transform infrared spectrometer laser calibration, and discloses a laser calibration platform for a Fourier transform infrared spectrometer, which comprises a bottom plate, a laser calibration movable plate positioned above the top of the bottom plate, and a cross-shaped center plate positioned above the top of the laser calibration movable plate, the laser calibration movable plate comprises a plurality of groups of up-down adjusting screws arranged at the two ends of the laser calibration movable plate; and the laser plate is arranged above the top of the laser calibration movable plate. The camera records the image of the laser light source on the transparent sheet and transmits the image to the computer, the image of the transparent sheet can be observed without holding the infrared observation mirror by hand, the labor cost is reduced to a certain extent, and the laser module is moved by adopting the plane adjusting screw, so that the movement accuracy is improved; and the imaging position of the laser light source on the transparent sheet can be quickly overlapped with the central cross of the transparent sheet, so that the efficiency is improved, and the laser calibration efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of laser calibration of Fourier transform infrared spectrometers, in particular to a laser calibration platform for Fourier transform infrared spectrometers. Background Art

[0002] The Fourier transform infrared spectrometer is different from the principle of dispersive infrared spectroscopy. It is an infrared spectrometer developed based on the principle of Fourier transform of infrared light after interference. It can perform qualitative and quantitative analysis on samples and is widely used in the fields of pharmaceutical chemical industry, geology and mining, petroleum, coal, environmental protection, customs, gem identification, criminal investigation identification, etc.

[0003] At present, the laser calibration technology of Fourier transform infrared spectrometer requires the use of an infrared observation mirror. However, the use of an infrared observation mirror often relies on the experience of the operator, because the infrared observation mirror needs to be handheld for observation and relies entirely on the reading of human eyes. As a result, only a few highly skilled technicians can truly master the laser calibration technology. The traditional calibration method has the problem of unclear imaging, resulting in low calibration accuracy and strong subjectivity. In order to solve the above technical problems, a laser calibration platform with convenient operation and high efficiency is now provided. Utility Model Content

[0004] The purpose of the utility model is to provide a laser calibration platform for a Fourier transform infrared spectrometer to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a laser calibration platform for a Fourier transform infrared spectrometer, comprising a bottom plate, a laser calibration movable plate located above the top of the bottom plate, and a cross center plate located above the top of the laser calibration movable plate, wherein the laser calibration movable plate comprises:

[0006] Multiple groups of up and down adjustment screws are arranged at both ends of the laser calibration movable plate;

[0007] A laser plate is arranged above the top of the laser calibration movable plate, and a laser alignment calibration block is arranged above the top of the laser plate;

[0008] A plurality of sets of support screws are arranged at both ends of the bottom of the laser plate and the laser alignment calibration block;

[0009] A laser module arranged on one side of the laser plate;

[0010] Plane adjustment screws are set at both ends and the middle of both sides of the laser alignment calibration block.

[0011] Preferably, fixed support rods are provided at the four corners of the top of the base plate, and sleeves are provided at the four corners of the bottom of the laser calibration movable plate.

[0012] Preferably, a camera fixing plate is arranged at the middle position of the top of the cross center plate, a supporting rib is arranged at the bottom of one side of the camera fixing plate, a camera is arranged at the top of the other side of the camera fixing plate, and a transparent sheet is arranged inside the cross center plate directly below the camera.

[0013] Preferably, the laser plate and the laser alignment calibration block are detachably connected to the laser alignment movable plate via support screws respectively, and a placement hole is provided at a middle position inside the laser alignment calibration block.

[0014] Preferably, a rotating block is provided at one end of the plane adjusting screw.

[0015] Preferably, an outer side of the plane adjustment screw is provided with an external thread, and both ends and both sides of the interior of the laser alignment calibration block are provided with threaded holes matching the plane adjustment screw.

[0016] Preferably, movable holes are provided at the four corners inside the laser calibration movable plate, and the top end of the fixed support rod passes through the inside of the sleeve and the movable hole.

[0017] Preferably, the cross center plate is detachably connected to the fixed support rod via a fixing bolt, and the cross center plate is detachably connected to the base plate via the fixing support rod.

[0018] Preferably, the bottom end of the support rib is detachably connected to the cross center plate via a fixing bolt, and the camera fixing plate is detachably connected to one side of the support rib via a fixing bolt.

[0019] Preferably, a through hole is provided on one side inside the cross center plate, and a card slot is provided on the top of the through hole, and the transparent sheet is detachably connected to the cross center plate via the card slot.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model records the imaging of the laser light source on the transparent sheet by a camera and transmits it to a computer. The imaging of the transparent sheet does not need to be observed using a handheld infrared observation mirror, which reduces the labor cost to a certain extent. The laser module is moved by a plane adjustment screw to improve the movement accuracy, and the imaging position of the laser light source on the transparent sheet can be quickly made to coincide with the center cross of the transparent sheet, thereby improving the efficiency and making the laser calibration more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a partial structural schematic diagram of the utility model.

[0025] Figure 3 It is a cross-sectional view of the utility model.

[0026] In the figure: 1. Base plate; 101. Fixed support rod; 102. Sleeve; 2. Laser calibration movable plate; 201. Up and down adjustment screws; 202. Laser plate; 203. Laser alignment calibration block; 204. Support screw; 205. Laser module; 206. Plane adjustment screw; 3. Cross center plate; 301. Camera fixing plate; 302. Support ribs; 303. Camera; 304. Transparent sheet. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-3 The utility model provides a laser calibration platform embodiment for a Fourier transform infrared spectrometer: a laser calibration platform for a Fourier transform infrared spectrometer, comprising a base plate 1, a laser calibration movable plate 2 located above the top of the base plate 1, and a cross center plate 3 located above the top of the laser calibration movable plate 2, wherein the laser calibration movable plate 2 comprises: a plurality of groups of up and down adjustment screws 201 arranged at both ends of the laser calibration movable plate 2, through which the laser calibration movable plate 2 and the fixed support rod 101 can be limited; a laser plate 202 arranged above the top of the laser calibration movable plate 2, and a laser alignment calibration block 203 is arranged above the top of the laser plate 202; a plurality of groups of support screws 204 arranged at both ends of the bottom of the laser plate 202 and the laser alignment calibration block 203; a laser module 205 arranged on one side of the inside of the laser plate 202; and plane adjustment screws 206 arranged at both ends and the middle position of both sides of the laser alignment calibration block 203, through which the position of the laser module 205 can be adjusted.

[0032] Please refer to Figure 1 and Figure 3, fixed support rods 101 are provided at the four corners of the top of the base plate 1, and the cross center plate 3 and the base plate 1 can be fixed by the fixed support rods 101, and sleeves 102 are provided at the four corners of the bottom of the laser calibration movable plate 2, which has a better adjustment effect on the laser calibration movable plate 2, and a camera fixing plate 301 is provided at the middle position of the top of the cross center plate 3, and a supporting rib 302 is provided at the bottom of one side of the camera fixing plate 301, and the camera fixing plate 301 can be supported by the supporting rib 302, and the fixation of the camera fixing plate 301 is more stable, which is convenient for the use of the camera 303, and a camera 303 is provided on the top of the other side of the camera fixing plate 301, and the camera 303 can be installed on the top of the cross center plate 3 by the camera fixing plate 301 and the supporting rib 302, and a transparent sheet 304 is provided inside the cross center plate 3 directly below the camera 303, which is convenient for calibrating the laser.

[0033] Please refer to Figure 1 and Figure 2 , the laser plate 202 and the laser alignment calibration block 203 are detachably connected to the laser alignment movable plate 2 through the support screw 204 respectively, so that the laser plate 202 and the laser alignment calibration block 203 are installed on the top of the laser alignment movable plate 2, and a placement hole is provided at the middle position inside the laser alignment calibration block 203, which is convenient for the use of the laser module 205, and a rotating block is provided at one end of the plane adjustment screw 206, and an external thread is provided on the outer side of the plane adjustment screw 206. The two ends and both sides of the laser alignment calibration block 203 are provided with threaded holes matching the plane adjustment screw 206, which play a role in limit adjustment, and the use position of the laser module 205 can be adjusted, and movable holes are provided at the four corners of the laser alignment movable plate 2, and the top end of the fixed support rod 101 passes through the sleeve 102 and the movable hole. The laser alignment movable plate 2 and the fixed support rod 101 can be moved through the movable hole, and the laser alignment movable plate 2 can be adjusted up and down.

[0034] Please refer to Figure 1 and Figure 3The cross center plate 3 is detachably connected to the fixed support rod 101 by a fixing bolt, and the cross center plate 3 is fixedly installed with the fixed support rod 101 by the fixing bolt. The cross center plate 3 is detachably connected to the base plate 1 by the fixing support rod 101, and the cross center plate 3 can be installed on the top of the base plate 1 by the fixing support rod 101. The bottom end of the supporting rib 302 is detachably connected to the cross center plate 3 by a fixing bolt, and the supporting rib 302 can be installed with the cross center plate 3. The camera fixing plate 301 is detachably connected to one side of the supporting rib 302 by a fixing bolt, and the camera fixing plate 301 can be installed between the supporting rib 302, so that the camera 303 can be fixedly installed and used. A through hole is provided on one side of the inside of the cross center plate 3, and a card slot is provided on the top of the through hole. The transparent sheet 304 is detachably connected to the cross center plate 3 by the card slot, and the transparent sheet 304 can be installed directly below the base plate of the camera 303.

[0035] Working principle: When the utility model is used for laser calibration, the supporting ribs 302, the cross center plate 3, the laser calibration movable plate 2, the sleeve 102, the camera fixing plate 301, the transparent sheet 304, the fixed supporting rod 101 and the bottom plate 1 are first installed, and then the camera 303 is installed on one side of the camera fixing plate 301. According to the distance from the camera 303 to the transparent sheet 304, the aperture and focal length of the camera 303 are adjusted to clearly record the transparent sheet 304. Then, the laser plate 202 and the laser alignment calibration block 203 are fixed to the laser calibration movable plate 2 with the supporting studs 204. The laser module 205 is installed on the laser plate 202, and a little optical glue is applied to fix it. The upper and lower movable adjustment screws 201 are adjusted to adjust the laser calibration movable plate 205. The plate 2 is limited between the fixed support rod 101, and the distance from the laser plate 202 to the transparent sheet 304 is fixed according to the optical path difference. When the laser plate 202 is powered on, the image formed by the laser light source can be observed on the transparent sheet 304. The laser module 205 is turned in the forward and reverse directions to focus the light spot on the transparent sheet 304 to a size of 1mm-1.5mm. The camera 303 repeatedly takes pictures to record the position of the laser light source imaging on the transparent sheet 204 and transmits it to the computer. Then, according to the image offset, the four plane adjustment screws 206 are adjusted, and the laser module 205 moves forward, backward, left and right until the position of the laser light source imaging on the transparent sheet coincides with the center cross of the transparent sheet 304. At this time, the laser calibration is completed, and some optical glue is applied to fix it.

[0036] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A laser calibration platform for a Fourier transform infrared spectrometer, characterized in that: The invention comprises a bottom plate (1), a laser calibration movable plate (2) located above the top of the bottom plate (1), and a cross center plate (3) located above the top of the laser calibration movable plate (2), wherein the laser calibration movable plate (2) comprises: A plurality of groups of up and down adjustment screws (201) are arranged at both ends of the laser calibration movable plate (2); A laser plate (202) is arranged above the top of the laser calibration movable plate (2), and a laser alignment calibration block (203) is arranged above the top of the laser plate (202); A plurality of groups of support screws (204) are arranged at both ends of the bottom of the laser plate (202) and the laser alignment calibration block (203); A laser module (205) disposed on one side of the interior of the laser plate (202); Plane adjustment screws (206) are arranged at both ends and at the middle positions of both sides of the laser alignment calibration block (203).

2. The laser calibration platform for Fourier transform infrared spectrometer according to claim 1, characterized in that: Fixed support rods (101) are provided at the four corners of the top of the base plate (1), and sleeves (102) are provided at the four corners of the bottom of the laser calibration movable plate (2).

3. The laser calibration platform for Fourier transform infrared spectrometer according to claim 2, characterized in that: A camera fixing plate (301) is arranged at the middle position of the top of the cross center plate (3), a supporting rib (302) is arranged at the bottom of one side of the camera fixing plate (301), a camera (303) is arranged at the top of the other side of the camera fixing plate (301), and a transparent sheet (304) is arranged inside the cross center plate (3) directly below the camera (303).

4. The laser calibration platform for Fourier transform infrared spectrometer according to claim 1, characterized in that: The laser plate (202) and the laser alignment calibration block (203) are detachably connected to the laser alignment movable plate (2) via support screws (204), respectively, and a placement hole is provided at a middle position inside the laser alignment calibration block (203).

5. The laser calibration platform for Fourier transform infrared spectrometer according to claim 1, characterized in that: One end of the plane adjustment screw (206) is provided with a rotating block.

6. The laser calibration platform for Fourier transform infrared spectrometer according to claim 1, characterized in that: The outer side of the plane adjustment screw (206) is provided with an external thread, and both ends and both sides of the interior of the laser alignment calibration block (203) are provided with threaded holes matching the plane adjustment screw (206).

7. The laser calibration platform for Fourier transform infrared spectrometer according to claim 2, characterized in that: Movable holes are arranged at the four corners inside the laser calibration movable plate (2), and the top end of the fixed support rod (101) penetrates into the sleeve (102) and the inside of the movable hole.

8. The laser calibration platform for Fourier transform infrared spectrometer according to claim 2, characterized in that: The cross center plate (3) is detachably connected to the fixed support rod (101) via a fixing bolt, and the cross center plate (3) is detachably connected to the bottom plate (1) via the fixed support rod (101).

9. The laser calibration platform for Fourier transform infrared spectrometer according to claim 3, characterized in that: The bottom end of the support rib (302) is detachably connected to the cross center plate (3) via a fixing bolt, and the camera fixing plate (301) is detachably connected to one side of the support rib (302) via a fixing bolt.

10. The laser calibration platform for Fourier transform infrared spectrometer according to claim 3, characterized in that: A through hole is provided on one side of the interior of the cross center plate (3), and a card slot is provided on the top of the through hole, and the transparent sheet (304) is detachably connected to the cross center plate (3) via the card slot.

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