Optical testing device with replaceable and adjustable slit

Abstract

The present invention provides an optical testing device with a replaceable and adjustable slit, which relates to the technical field of optical instruments, and comprises a box, a mounting sleeve and a slit; the slit is arranged on the mounting sleeve; a mounting plate is arranged in the box, and a mounting window is arranged on the mounting plate; the mounting sleeve is detachably arranged on the mounting window. The present invention is exquisitely designed, easy to promote, more flexible in the debugging process, and has high positioning accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of optical instruments, in particular to an optical testing device for laser testing, wherein a slit of the optical testing device is convenient for installation, debugging and replacement. Background Art

[0002] At present, during the testing process of optical components such as lasers, it is often necessary to use slits to align the light spot. The fixed slit structure in the test device is not flexible enough, and it is not convenient to adjust or replace the position, and it is difficult to ensure the position accuracy during the replacement process. Summary of the invention

[0003] The object of the present invention is to provide an optical testing device with a replaceable and adjustable slit, so as to solve at least one of the above-mentioned technical problems existing in the prior art.

[0004] In order to solve the above technical problems, the present invention provides an optical testing device with a replaceable and adjustable slit, comprising: a box body (or a box body), a mounting sleeve and a slit;

[0005] The slit is arranged on the mounting sleeve;

[0006] The box body is provided with a mounting plate, and the mounting plate is provided with a mounting window;

[0007] The mounting sleeve is detachably arranged on the mounting window.

[0008] Furthermore, a mounting hole is provided on the mounting sleeve, and the slit is embedded in the mounting hole.

[0009] Furthermore, it also includes a fastening screw, which is screwed into the mounting sleeve from the outside along the radial direction of the mounting hole, and the top of the fastening screw is pressed against the outer circle of the slit, thereby fixing the slit.

[0010] Furthermore, the number of the fastening screws is multiple (preferably 3-5), and the multiple fastening screws are evenly arranged in the circumferential direction of the mounting hole.

[0011] Furthermore, the mounting hole and the slit are circular, and an annular positioning groove matching with the top of the fastening screw is provided on the outer circle of the slit.

[0012] When tightening, the top of the tightening screw is inserted into the annular positioning groove, thereby facilitating the installation accuracy of the slit in the vertical plane.

[0013] Furthermore, the installation window is a frustoconical hole; and the outer side surface of the installation sleeve is a frustoconical working surface that matches the frustoconical hole.

[0014] The insertion fit of the truncated cone-shaped mounting hole has a self-positioning function. After the mounting sleeve is installed in place, the mounting sleeve can be quickly self-positioned, thereby saving adjustment time during the slit replacement process and improving work efficiency.

[0015] Of course, the mounting sleeve can also be fixed to the mounting plate in the form of a connecting flange and screws.

[0016] Furthermore, an annular mounting groove is arranged on the inner side of the outer opening of the mounting window, and an annular bag body made of elastic material is arranged in the mounting groove. The annular bag body is connected to the cooling medium source of the optical testing device. The annular bag body bulges outward from the mounting groove under the pressure of the cooling medium and abuts against the outer end of the mounting sleeve, thereby pressing the mounting sleeve into the mounting window.

[0017] Furthermore, a chamfered working slope is arranged on the outer end edge of the installation sleeve, the opening of the installation groove is arranged facing the working slope, and the annular bag body bulges under the pressure of the cooling medium and then abuts against the working slope.

[0018] Furthermore, the angle between the working inclined surface and the outer end surface of the mounting sleeve is 30-50 degrees.

[0019] Furthermore, a positioning protrusion is provided in the installation window (cone-shaped hole); and a plurality of axial positioning grooves are evenly provided on the outer circumference of the installation sleeve;

[0020] The positioning protrusion can be selectively inserted and matched with one of the axial positioning grooves to adjust and limit the layout angle of the slit in the vertical plane.

[0021] Furthermore, the cooling medium source is a cooling system, and the inlet of the annular bag body is connected to the cooling medium supply pipeline of the cooling system through a third supply branch pipe; the inlet of the annular bag body is connected to the recovery pipeline of the cooling system through a third recovery branch pipe.

[0022] Furthermore, a pressure control valve is provided on the third supply branch pipe and / or the third recovery branch pipe for controlling the pressure in the annular bag body.

[0023] Furthermore, the box body is provided with a first chamber and a second chamber;

[0024] The mounting plate is disposed as a partition between the first chamber and the second chamber; the first chamber is provided with a first heat sink; the second chamber is provided with a second heat sink; the first heat sink and the second heat sink are disposed in parallel.

[0025] Furthermore, the cooling medium inlets of the first heat sink and the second heat sink are connected to the supply pipeline of the cooling system through the first supply branch pipe and the second supply branch pipe respectively;

[0026] The cooling medium outlets of the first heat sink and the second heat sink are connected to the recovery pipeline of the cooling system through the first recovery branch pipe and the second recovery branch pipe respectively; the recovery pipeline and the supply pipeline are both arranged outside the box.

[0027] Furthermore, a first temperature control valve is arranged on the first recovery branch pipe and outside the box, and the first temperature control valve includes a first valve body and a first temperature probe; the first temperature probe is arranged in the first chamber to sense the temperature in the first chamber; the flow rate adjustment of the first valve body is positively correlated with the temperature in the first chamber sensed by the first temperature probe.

[0028] That is, when the temperature in the first chamber sensed by the first temperature probe increases, the flow rate of the first valve body is adjusted to increase accordingly; when the temperature in the first chamber sensed by the first temperature probe decreases, the flow rate of the first valve body is adjusted to decrease accordingly.

[0029] Furthermore, a total temperature control valve is arranged on the supply pipeline or the recovery pipeline, and the total temperature control valve includes a total valve body and a total temperature probe; the total temperature probe is arranged in the first chamber, and is used to sense the temperature in the first chamber; the flow rate adjustment of the total valve body is positively correlated with the temperature in the first chamber sensed by the total temperature probe; that is, when the temperature in the first chamber sensed by the total temperature probe increases, the flow rate of the total valve body is adjusted to increase accordingly; when the temperature in the first chamber sensed by the total temperature probe decreases, the flow rate of the total valve body is adjusted to decrease accordingly.

[0030] Furthermore, a second temperature control valve is provided on the second recovery branch pipe, and the second temperature control valve includes a second valve body and a second temperature probe. The second temperature probe is arranged in the first recovery branch pipe, and is used to sense the temperature of the cooling medium discharged from the first heat sink; the flow rate adjustment of the second valve body is negatively correlated with the temperature value sensed by the second temperature probe; that is, when the temperature value sensed by the second temperature probe increases, the flow rate of the second valve body is adjusted to decrease accordingly; when the temperature value sensed by the second temperature probe decreases, the flow rate of the second valve body is adjusted to increase accordingly.

[0031] Furthermore, a third temperature control valve is arranged on the first recovery branch pipe, and the third temperature control valve includes a third valve body and a third temperature probe. The third temperature probe is arranged in the second recovery branch pipe, and is used to sense the temperature of the cooling medium discharged from the second heat sink; the flow rate adjustment of the third valve body is negatively correlated with the temperature value sensed by the third temperature probe; that is, when the temperature value sensed by the third temperature probe increases, the flow rate of the third valve body is adjusted to decrease accordingly; when the temperature value sensed by the third temperature probe decreases, the flow rate of the third valve body is adjusted to increase accordingly.

[0032] In the present application, a temperature control valve that monitors each other is set between the heat sinks in the two chambers of the box. When the temperature of the first heat sink is higher than the set threshold, it indicates that the temperature in the first chamber is too high. By reducing the flow of the second heat sink, under the condition of equal hydraulic pressure supply, the flow of the cooling medium flowing through the first heat sink will increase relatively, thereby increasing the cooling capacity of the first heat sink. When the temperature of the second heat sink is too high, similarly, by reducing the flow or flow rate of the first heat sink, the flow and cooling capacity of the second heat sink are increased, which helps to maintain the temperature balance between the chambers on both sides of the optical lens. In actual applications, all temperature control valves need to set a minimum flow value to avoid being closed during the regulation process, thereby ensuring the basic heat dissipation function of each heat sink.

[0033] After the slit is installed in place, the cooling system works, and the annular bag body bulges under the pressure of the cooling medium of the cooling system and rests on the installation sleeve to achieve automatic positioning and locking of the installation sleeve. At the same time, the annular bag body serves as a sealing structure to achieve sealing between the installation sleeve and the installation window. Compared with sealing forms such as sealing rings, the sealing structure in the form of an elastic bag body squeezed by the cooling medium has a better sealing effect, and due to frequent plugging and replacement, existing sealing structures such as density rings are easily damaged by wear, resulting in a loose density structure. When the annular bag body in the present application is not working, there is no pressure in the annular bag body. When the frame is better, the installation sleeve will not wear the annular bag body, the service life is longer, and the sealing effect can be adjusted by the pressure of the cooling medium.

[0034] Furthermore, an elastic strip made of elastic material is arranged in the annular bag body, and the elastic strip tends to force the annular bag body to return to the installation groove. When not in operation or when the pressure of the cooling medium drops to a set value, the annular bag body is completely returned to the installation groove under the action of the elastic strip, thereby ensuring that the annular bag body will not be worn when the frame is replaced.

[0035] Furthermore, a pump body is provided on the supply pipeline for pumping cooling medium to the heat sink.

[0036] Furthermore, the heat sink is a heat pipe or a heat sink.

[0037] By adopting the above technical solution, the present invention has the following beneficial effects:

[0038] The optical testing device with replaceable and adjustable slits provided by the present invention has exquisite design, is easy to promote, is more flexible during the debugging process, and has high positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 A schematic structural diagram of an optical testing device with replaceable and adjustable slits provided in Example 1 of the present invention;

[0041] Figure 2 for Figure 1 An exploded view of the mounting sleeve shown;

[0042] Figure 3 for Figure 1 A cross-sectional view of the mounting sleeve shown;

[0043] Figure 4 for Figure 1 A perspective view of the mounting sleeve shown;

[0044] Figure 5 for Figure 1 A schematic diagram of the structure of the slit shown;

[0045] Figure 6 A schematic structural diagram of an optical testing device with replaceable and adjustable slits provided in Example 2 of the present invention;

[0046] Figure 7 It is a schematic diagram of the structure of installing the sleeve in Example 2;

[0047] Figure 8 This is a schematic diagram of the structure of the installation slot at the installation window in Example 2;

[0048] Fig. 9 This is a schematic diagram of the structure of the axial positioning groove on the conical side of the mounting sleeve in Example 2;

[0049] Fig.10 is a schematic diagram of the cooling system in Example 3;

[0050] Fig.11 This is a cross-sectional view of the annular bag body in Example 4.

[0051] Reference numerals:

[0052] 10-box; 11-first chamber; 12-second chamber; 13-mounting plate; 13a-mounting groove; 14-mounting window; 15-annular bag; 15a-third recovery branch; 15b-third supply branch; 15c-pressure control valve; 15d-elastic strip; 20-mounting sleeve; 20a-cone-shaped working surface; 20b-working inclined surface; 20c-axial positioning groove; 21-slit; 21a-annular positioning groove; 22-connecting flange; 23-fastening screw; 30-first temperature control valve ;31-first valve body;32-first temperature probe;33-third temperature control valve;34-third valve body;35-third temperature probe;40-first heat sink;41-first supply branch;42-first recovery branch;50-second heat sink;51-second supply branch;52-second recovery branch;60-supply pipeline;61-recovery pipeline;70-second temperature control valve;71-second valve body;72-second temperature probe;80-total temperature control valve;81-total valve body;82-total temperature probe. DETAILED DESCRIPTION

[0053] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 indirectly connected 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.

[0056] The present invention is further explained below in conjunction with specific implementation modes.

[0057] Example 1

[0058] like Figure 1 As shown, the present embodiment provides an optical testing device with a replaceable and adjustable slit, comprising: a box body 10 (or a box body), a mounting sleeve 20 and a slit 21; the slit 21 is arranged on the mounting sleeve 20; a mounting plate 13 is arranged in the box body 10, and a mounting window 14 is arranged on the mounting plate 13; the mounting sleeve 20 is detachably arranged on the mounting window 14. The mounting sleeve 20 can also be fixed on the mounting plate 13 by means of a connecting flange 22 and screws.

[0059] Reference Figure 2-4 As shown, the mounting sleeve 20 is provided with a mounting hole, and the slit 21 is embedded in the mounting hole. This embodiment also includes a fastening screw 23, which is screwed in from the outside of the mounting sleeve 20 along the radial direction of the mounting hole, and the top of the fastening screw 23 presses against the outer circle of the slit 21, thereby fixing the slit 21. The number of the fastening screws 23 is 3-5, and the multiple fastening screws 23 are evenly arranged in the circumferential direction of the mounting hole of the mounting sleeve 20.

[0060] Wherein, the mounting hole and the slit 21 are circular, referring to Figure 5 As shown, the outer circle of the slit 21 is provided with an annular positioning groove 21a which matches with the top of the fastening screw 23. When fastening, the top of the fastening screw 23 is inserted into the annular positioning groove 21a, thereby facilitating the installation accuracy of the slit 21 in the vertical plane.

[0061] The optical testing device with replaceable and adjustable slits provided by the present invention has exquisite design, is easy to promote, is more flexible during the debugging process, and has high positioning accuracy.

[0062] Example 2

[0063] The structure of this embodiment is basically the same as that of embodiment 1, except that:

[0064] Reference Figure 6 and Figure 7 As shown, a first chamber 11 and a second chamber 12 are provided in the box body 10 ; the mounting plate 13 is provided between the first chamber 11 and the second chamber 12 as a partition.

[0065] The installation window 14 on the installation plate 13 is a truncated cone-shaped hole; the outer side surface of the installation sleeve 20 is a truncated cone-shaped working surface 20a that matches the truncated cone-shaped hole. The insertion and fitting of the truncated cone-shaped installation hole has a self-positioning function. After the installation sleeve 20 is installed in place, the installation sleeve 20 can be quickly self-positioned, thereby saving the adjustment time of the slit 21 replacement process and improving work efficiency.

[0066] Reference Figure 8 As shown, an annular mounting groove 13a is provided on the inner side of the outer side of the mounting window 14 (i.e., the side with a larger diameter of the frustum-shaped hole), and an annular bag body 15 made of elastic material is provided in the mounting groove 13a. The annular bag body 15 is connected to a cooling medium source of the optical testing device. Under the pressure of the cooling medium, the annular bag body 15 bulges outward from the mounting groove 13a and abuts against one end of the outer side of the mounting sleeve 20, thereby pressing the mounting sleeve 20 into the mounting window 14.

[0067] The outer end edge of the installation sleeve 20 is provided with a chamfered working inclined surface 20b, and the opening of the installation groove 13a is arranged facing the working inclined surface 20b. The annular bag body 15 swells under the pressure of the cooling medium and abuts against the working inclined surface 20b. The thrust generated by the swelling of the annular bag body 15 forces the installation sleeve 20 to tend to be inserted into the truncated cone-shaped installation window 14, thereby achieving the dual functions of sealing and fastening.

[0068] The angle between the working inclined surface and the outer end surface of the mounting sleeve 20 is set according to actual needs, preferably 30-50 degrees.

[0069] A positioning protrusion (not shown) is provided in the installation window 14 (the truncated cone-shaped hole); Fig. 9 This is a top view of the installation sleeve 20 from the small end to the large end. Fig. 9 As shown, a plurality of axial positioning grooves 20c are evenly arranged on the conical side of the installation sleeve 20; the positioning protrusion can be selectively inserted and matched with an axial positioning groove 20c to adjust and limit the layout angle of the slit 21 in the vertical plane. That is, by rotating the installation sleeve 20, using an axial positioning groove 20c to insert and match with the positioning protrusion inside the installation window 14, the slit 21 can be accurately positioned at multiple specific angles.

[0070] After the slit 21 is installed in place, the cooling system works, and the annular bag body 15 swells under the pressure of the cooling medium of the cooling system and rests on the installation sleeve 20 to achieve automatic positioning and locking of the installation sleeve 20. At the same time, the annular bag body 15 serves as a sealing structure to achieve sealing between the installation sleeve 20 and the installation window 14. Compared with sealing forms such as sealing rings, the sealing structure in the form of an elastic bag body squeezed by the cooling medium has a better sealing effect, and due to frequent plugging and replacement, existing sealing structures such as density rings are easily damaged by wear, resulting in a loose density structure. When the annular bag body 15 in the present application is not working, there is no pressure in the annular bag body 15. When the frame is better, the installation sleeve 20 will not wear the annular bag body 15, the service life is longer, and the sealing effect can be adjusted by the pressure of the cooling medium.

[0071] Example 3

[0072] The structure of this embodiment is basically the same as that of embodiment 2, except that:

[0073] Reference Fig.10 As shown, the cooling medium source of this embodiment is a cooling system, and the inlet of the annular bag body 15 is connected to the cooling medium supply pipeline 60 of the cooling system through the third supply branch pipe 15b; the inlet of the annular bag body 15 is connected to the recovery pipeline 61 of the cooling system through the third recovery branch pipe 15a. The cooling medium can be a cooling liquid or a cooling gas.

[0074] The third supply branch pipe 15 b and / or the third recovery branch pipe 15 a are provided with a pressure control valve 15 c for controlling the pressure in the annular bag body 15 .

[0075] The first chamber 11 is provided with a first heat sink 40 ; the second chamber 12 is provided with a second heat sink 50 ; the first heat sink 40 and the second heat sink 50 are provided in parallel.

[0076] The cooling medium inlets of the first heat sink 40 and the second heat sink 50 are connected to the supply pipeline 60 of the cooling system through the first supply branch pipe 41 and the second supply branch pipe 51 respectively;

[0077] The cooling medium outlets of the first heat sink 40 and the second heat sink 50 are connected to the recovery pipeline 61 of the cooling system through the first recovery branch pipe 42 and the second recovery branch pipe 52 respectively; the recovery pipeline 61 and the supply pipeline 60 are both arranged outside the box body 10.

[0078] A first temperature control valve 30 is arranged on the first recovery branch pipe 42 and outside the box body 10, and the first temperature control valve 30 includes a first valve body 31 and a first temperature probe 32; the first temperature probe 32 is arranged in the first chamber 11, and is used to sense the temperature in the first chamber 11; the flow rate adjustment of the first valve body 31 is positively correlated with the temperature in the first chamber 11 sensed by the first temperature probe 32.

[0079] That is, when the temperature in the first chamber 11 sensed by the first temperature probe 32 increases, the flow rate of the first valve body 31 is adjusted to increase; when the temperature in the first chamber 11 sensed by the first temperature probe 32 decreases, the flow rate of the first valve body 31 is adjusted to decrease.

[0080] Among them, a total temperature control valve 80 is arranged on the supply pipeline 60 or the recovery pipeline 61, and the total temperature control valve 80 includes a total valve body 81 and a total temperature probe 82; the total temperature probe 82 is arranged in the first chamber 11, and is used to sense the temperature in the first chamber 11; the flow adjustment of the total valve body 81 is positively correlated with the temperature in the first chamber 11 sensed by the total temperature probe 82; that is, when the temperature in the first chamber 11 sensed by the total temperature probe 82 increases, the flow of the total valve body 81 is adjusted to increase accordingly; when the temperature in the first chamber 11 sensed by the total temperature probe 82 decreases, the flow of the total valve body 81 is adjusted to decrease accordingly.

[0081] More preferably, a second temperature control valve 70 is provided on the second recovery branch 52, and the second temperature control valve 70 includes a second valve body 71 and a second temperature probe 72. The second temperature probe 72 is arranged in the first recovery branch 42, and is used to sense the temperature of the cooling medium discharged from the first heat sink 40; the flow rate adjustment of the second valve body 71 is negatively correlated with the temperature value sensed by the second temperature probe 72; that is, when the temperature value sensed by the second temperature probe 72 increases, the flow rate of the second valve body 71 is adjusted to decrease accordingly; when the temperature value sensed by the second temperature probe 72 decreases, the flow rate of the second valve body 71 is adjusted to increase accordingly.

[0082] In addition, a third temperature control valve 33 is provided on the first recovery branch pipe 42, and the third temperature control valve 33 includes a third valve body 34 and a third temperature probe 35. The third temperature probe 35 is arranged in the second recovery branch pipe 52, and is used to sense the temperature of the cooling medium discharged from the second heat sink 50; the flow rate adjustment of the third valve body 34 is negatively correlated with the temperature value sensed by the third temperature probe 35; that is, when the temperature value sensed by the third temperature probe 35 increases, the flow rate of the third valve body 34 is adjusted to decrease accordingly; when the temperature value sensed by the third temperature probe 35 decreases, the flow rate of the third valve body 34 is adjusted to increase accordingly.

[0083] In the present application, a temperature control valve that monitors each other is set between the heat sinks of the two chambers in the housing 10. When the temperature of the first heat sink 40 is higher than the set threshold, it indicates that the temperature in the first chamber 11 is too high. By reducing the flow of the second heat sink 50, under the condition of equal supply hydraulic pressure, the flow of the cooling medium flowing through the first heat sink 40 will be relatively increased, thereby increasing the cooling capacity of the first heat sink 40. When the temperature of the second heat sink 50 is too high, similarly, by reducing the flow or flow rate of the first heat sink 40, the flow and cooling capacity of the second heat sink 50 are increased, thereby helping to maintain the temperature balance between the chambers on both sides of the optical lens. In actual applications, all temperature control valves need to set a minimum flow value to avoid being closed during the regulation process, thereby ensuring the basic heat dissipation function of each heat sink.

[0084] In this embodiment, the temperature of the first heat sink in the more important first chamber 11 is used as a reference, and the temperature control of the second heat sink in the second chamber 12 is adjusted according to the heat dissipation effect of the first heat sink. The purpose is to control the relative temperature difference between different heat dissipation units of the entire system and ensure the temperature balance of the entire system; because in many working environments, temperature balance is particularly important.

[0085] Example 4

[0086] The structure of this embodiment is basically the same as that of embodiment 2, except that:

[0087] Reference Fig.11 As shown, an elastic strip 15d made of elastic material is arranged in the annular bag body 15, and the elastic strip 15d tends to force the annular bag body 15 to return to the mounting groove 13a. When not in operation or when the pressure of the cooling medium drops to a set value, the annular bag body 15 is completely returned to the mounting groove 13a under the action of the elastic strip 15d, thereby ensuring that the annular bag body 15 will not be worn when the frame is replaced.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical testing device with a replaceable and adjustable slit, characterized in that: include: A housing (10), a mounting sleeve (20) and a slit (21); The slit (21) is arranged on the mounting sleeve (20); A mounting plate (13) is provided in the box body (10), and a mounting window (14) is provided on the mounting plate (13); The mounting sleeve (20) is detachably disposed on the mounting window (14); The installation window (14) is a truncated cone-shaped hole; the outer side surface of the installation sleeve (20) is a truncated cone-shaped working surface (20a) that cooperates with the truncated cone-shaped hole; An annular mounting groove (13a) is provided on the inner side of the outer opening of the mounting window (14); an annular bag body (15) made of elastic material is provided in the mounting groove (13a); the annular bag body (15) is connected to a cooling medium source of the optical testing device; the annular bag body (15) bulges outward from the mounting groove (13a) under the pressure of the cooling medium and abuts against an outer end of the mounting sleeve (20), thereby pressing the mounting sleeve (20) into the mounting window (14).

2. The optical testing device with replaceable and adjustable slit according to claim 1, characterized in that: The mounting sleeve (20) is provided with a mounting hole, and the slit (21) is embedded in the mounting hole.

3. The optical testing device with replaceable and adjustable slit according to claim 2, characterized in that: It also includes a fastening screw (23), which is screwed into the mounting sleeve (20) from the outside along the radial direction of the mounting hole, and the top of the fastening screw (23) is pressed against the outer circle of the slit (21), thereby fixing the slit (21).

4. The optical testing device with replaceable and adjustable slit according to claim 3, characterized in that: The number of the fastening screws (23) is multiple, and the multiple fastening screws (23) are evenly arranged in the circumferential direction of the mounting hole.

5. The optical testing device with replaceable and adjustable slit according to claim 3, characterized in that: The mounting hole and the slit (21) are circular, and an annular positioning groove (21a) matching the top of the fastening screw (23) is provided on the outer circle of the slit (21).

6. The optical testing device with replaceable and adjustable slit according to claim 1, characterized in that: The outer end edge of the installation sleeve (20) is provided with a chamfered working inclined surface (20b), the opening of the installation groove (13a) is arranged facing the working inclined surface (20b), and the annular bag body (15) swells under the pressure of the cooling medium and then abuts against the working inclined surface (20b).

7. The optical testing device with replaceable and adjustable slit according to claim 6, characterized in that: The included angle between the working inclined surface (20b) and the outer end surface of the installation sleeve (20) is 30-50 degrees.

8. The optical testing device with replaceable and adjustable slit according to claim 1, characterized in that: A positioning protrusion is provided in the installation window (14); a plurality of axial positioning grooves (20c) are evenly provided on the outer circumference of the installation sleeve (20); The positioning protrusion can be selectively inserted into and matched with one of the axial positioning grooves (20c) to adjust and limit the layout angle of the slit (21) in the vertical plane.

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