Grating diffraction efficiency testing device
By designing a rotatable grating diffraction efficiency test device, the problem of inaccurate detection of injection points in the prior art is solved, and more accurate grating performance detection is achieved.
Patent Information
- Application Number
- CN202422293283.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-19
AI Technical Summary
In the prior art, the exit point detected by the instrument may not be the point at the optimal diffraction angle, resulting in the detected diffraction efficiency not truly reflecting the performance of the grating.
A grating diffraction efficiency testing device is designed, including a test bench, a receiving device, a grating frame and a transmitting device. The rotating part of the test bench can drive the receiving device to rotate at any angle around the grating frame, ensuring that the receiving device is at the optimal diffraction angle to monitor the intensity of the diffraction light.
Through this device, the diffraction performance of the grating can be truly reflected, and more accurate grating performance detection results can be provided.
Smart Images
Figure CN223037355U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grating performance detection, and particularly relates to a grating diffraction efficiency testing device. Background Art
[0002] The grating diffraction efficiency refers to the ratio of the intensity of the diffracted light generated at a specific diffraction angle after the incident light is diffracted by the grating to the intensity of the incident light. The light intensity can be measured using an optical detector such as a power meter or a spectrometer. The detection result is affected by various factors. For example, the exit point detected by the instrument may not be the point at the optimal diffraction angle, so the detected diffraction efficiency is not the highest diffraction efficiency and cannot truly reflect the performance of the grating. Content of the Utility Model
[0003] To solve the problem in the prior art that the exit point detected by the instrument may not be the point at the optimal diffraction angle, the utility model provides a grating diffraction efficiency testing device.
[0004] The present application provides a grating diffraction efficiency testing device, including a test bench, a receiving device, a grating holder and a transmitting device. The test bench includes a rotating part and a fixed part. The fixed part is used to be fixed on the tabletop, and the rotating part is rotatably connected to the fixed part. The receiving device is arranged on the rotating part. The receiving device can selectively move in a circular motion following the rotating part and is used to receive the diffracted light formed by the grating. The grating holder is arranged at the center of the circular motion of the receiving device. The grating holder is used to clamp the grating. The transmitting device is used to be fixed on the tabletop or the fixed part to emit light towards the grating;
[0005] Wherein, the rotating part can selectively drive the receiving device to rotate around the grating holder by any angle.
[0006] In some embodiments, the grating holder includes a first lifting base and a clamping head. The clamping head is rotatably connected to the lifting end of the first lifting base. The clamping head can deflect with the rotation center of the rotating part as the axis.
[0007] In some embodiments, the clamping head includes a connecting piece, a movable piece and an adjusting piece. The connecting piece is rotatably connected to the lifting end of the first lifting base. The movable piece is arranged opposite to the connecting piece and has a gap formed therebetween. The gap is used to place the grating. One end of the adjusting piece is threadedly connected to the connecting piece, and the other end abuts against the side of the movable piece away from the connecting piece;
[0008] The adjusting piece adjusts the size of the gap between the movable piece and the connecting piece by rotation.
[0009] In some embodiments, the adjusting member includes a penetrating portion and a resisting portion. The resisting portion is connected to the penetrating portion. The penetrating portion passes through the movable member and is threadedly connected to the connecting member.
[0010] The resisting portion is made of magnetic material, and the movable member is a magnetic member, or the resisting portion is a magnetic member and the movable member is made of magnetic material, and the resisting portion and the movable member are magnetically attracted to each other.
[0011] In some embodiments, a through hole is formed at the rotation center of the rotating portion. The clamping head is connected to a rotating disk at least partially located in the through hole. A first scale is provided on the rotating disk, and a second scale is provided at the edge of the rotating portion close to the through hole. The first scale and the second scale are correspondingly arranged.
[0012] In some embodiments, the receiving device includes a receiving head, an adjusting base, and a second lifting base. The adjusting base is rotatably connected to the lifting end of the second lifting base, and the receiving head is disposed on the adjusting base.
[0013] The adjusting base includes a base body, a deflecting body, and an adjusting knob. The deflecting body is movably connected to the base body. The adjusting knob is threadedly connected to the base body and abuts against the deflecting body to cause the deflecting body to deflect and tilt. The receiving head is fixed to the deflecting body.
[0014] In some embodiments, the transmitting device includes a transmitting head and a third lifting base. The transmitting head is rotatably connected to the lifting end of the third lifting base, and the transmitting head is used to be connected to a light source through an optical fiber.
[0015] In some embodiments, there are at least two fixing portions, and they are disposed at the edge of the rotating portion.
[0016] In some embodiments, the fixing portion includes a plurality of brackets, and the plurality of brackets are arranged around the edge of the rotating portion.
[0017] The bracket includes a clamping member and a fourth lifting base. The clamping member is connected to the lifting end of the fourth lifting base. A sliding groove is formed on one side of the clamping member close to the rotating portion, and a clamping portion is provided at the edge of the rotating portion. The clamping member is slidably clamped to the clamping portion at the edge of the rotating portion through the sliding groove.
[0018] In some embodiments, a third scale is provided on the fixing portion, and a fourth scale is provided at the edge of the rotating portion close to the fixing portion. The third scale and the fourth scale are correspondingly arranged to display the rotation angle of the rotating portion.
[0019] Compared with the prior art, the beneficial effect of the grating diffraction efficiency test device according to the embodiment of the present utility model lies in that: A grating diffraction efficiency test device provided by the present application includes a test bench, a receiving device, a grating holder, and a transmitting device. Among them, the test bench includes a rotating part and a fixing part. The fixing part is used to be fixed on the tabletop, and the rotating part is rotatably connected to the fixing part. The rotating part can make a circular rotational motion relative to the tabletop through the fixing part. The receiving device is arranged on the rotating part. The receiving device can selectively follow the rotating part to make a circular motion and is used to receive the diffracted light formed by the grating. The grating holder is arranged at the center of the circular motion of the receiving device. The grating holder is used to clamp the grating, and the transmitting device is used to be fixed on the tabletop or the fixing part to emit light towards the grating. Through the above design, a full-spectrum light source can be used. The rotating part can drive the receiving device to rotate around the grating holder by any angle. Thus, when the grating diffracts, the rotating part can be rotated to make the receiving device be at the optimal diffraction angle to monitor the light intensity of the diffracted light, and then the diffraction performance of the grating can be more truly reflected. Brief Description of the Drawings
[0020] Figure 1 is the overall structural schematic diagram of an embodiment of the present application;
[0021] Figure 2 is Figure 1 the enlarged schematic diagram of the structure at position A in
[0022] Figure 3 is the schematic diagram of another overall structure of an embodiment of the present application;
[0023] Figure 4 is Figure 2 the enlarged schematic diagram of the structure at position B in
[0024] Figure 5 is the schematic diagram of the partial structure section of an embodiment of the present application;
[0025] Figure 6 is the schematic diagram of the overall structure of another embodiment of the present application;
[0026] Figure 7 is Figure 6 the enlarged schematic diagram of the structure at position C in
[0027] Figure 8 is the schematic diagram of the relative position and structure of the rotating disk and the rotating part provided in an embodiment of the present application;
[0028] Figure 9 is Figure 8 the enlarged schematic diagram of the structure at position D in
[0029] 100. Test bench; 11. Fixing part; 111. Bracket; 1111. Engaging part; 1112. Fourth lifting base; 12. Rotating part; 200. Receiving device; 21. Receiving head; 22. Second lifting base; 23. Adjusting base; 231. Base body; 232. Deflecting body; 233. Adjusting knob; 300. Grating holder; 31. First lifting base; 32. Clamping head; 321. Connecting part; 322. Movable part; 323. Adjusting part; 3231. Penetrating part; 3232. Supporting part; 33. Rotating disk; 400. Transmitting device; 41. Transmitting head; 42. Third lifting base; 01. First scale; 011. First calibration scale; 02. Second scale; 021. Second calibration scale; 03. Third scale; 04. Fourth scale; 05. Gap; 06. Through hole; 001. Slide groove; 002. Engaging part; S. Tabletop. Detailed implementation manner
[0030] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.
[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0032] It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0033] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model.
[0035] The following further describes this utility model in detail with reference to the accompanying drawings.
[0036] As Figure 1 shown, a grating diffraction efficiency testing device includes a testing platform 100, a receiving device 200, a grating holder 300, and a transmitting device 400. Among them, the testing platform 100 includes a rotating part 12 and a fixing part 11. The fixing part 11 is used to be fixed on the tabletop S. The rotating part 12 is rotatably connected to the fixing part 11, and the rotating part 12 can perform a circular rotational motion relative to the tabletop S through the fixing part 11. The receiving device 200 is arranged on the rotating part 12. The receiving device 200 can selectively follow the rotating part 12 to perform a circular motion and is used to receive the diffracted light formed by the grating. The grating holder 300 is arranged at the center of the circular motion of the receiving device 200. The grating holder 300 is used to clamp the grating. The transmitting device 400 is used to be fixed on the tabletop S or the fixing part 11 to emit light to the grating ( Figure 1 in which the transmitting device 400 is fixed on the tabletop S). Through the above design, a full-spectrum light source can be used. The rotating part 12 can drive the receiving device 200 to rotate around the grating holder 300 by any angle. In this way, when the grating diffracts, the rotating part 12 can be rotated to make the receiving device 200 be at the best diffraction angle to detect the light intensity of the diffracted light, and thus the diffraction performance of the grating can be more truly reflected.
[0037] The technical details of each component will be introduced one by one below.
[0038] In some embodiments, as Figure 3 , Figure 4 , Figure 5 shown, the grating holder 300 includes a first lifting base 31 and a clamping head 32. The clamping head 32 is rotatably connected to the lifting end of the first lifting base 31. The clamping head 32 is used to clamp and fix the grating. Under the action of the first lifting base 31, the height of the grating can be adjusted after being clamped and fixed by the clamping head 32, which is convenient for the grating to be at the best height position during the test. And the clamping head 32 can deflect with the rotation center of the rotating part 12 as the axis. In this way, the incident angle of the light entering the grating can be changed by deflecting the grating during the test, which is convenient for the light to enter the grating at the best incident angle during the test.
[0039] In some embodiments, as Figure 3 , Figure 4As shown in the figure, the above-mentioned clamping head 32 includes a connecting member 321, a movable member 322 and an adjusting member 323. The connecting member 321 is rotatably connected to the lifting end of the first lifting base 31. The movable member 322 is disposed opposite to the connecting member 321 and forms a gap 05. The gap 05 is used to dispose the grating. One end of the adjusting member 323 is threadedly connected to the connecting member 321, and the other end abuts against the side of the movable member 322 away from the connecting member 321. By rotating the adjusting member 323, the adjusting member 323 can be made to abut against the movable member 322 to approach or move away from the connecting member 321. When the movable member 322 approaches the connecting member 321, the gap 05 becomes smaller. When the movable member 322 moves away from the connecting member 321, the gap 05 becomes larger. After a part of the grating is placed into the gap 05, rotate the adjusting member 323 to make the adjusting member 323 abut against the movable member 322 and move towards the connecting member 321. At this time, the gap 05 is reduced to clamp the grating. The adjusting member 323 rotates and moves in a threaded manner, which can achieve stepless adjustment of the size of the gap 05, and the structure is simple, and it is not easy to malfunction and be damaged during use.
[0040] In some embodiments, as Figure 3 , Figure 4 shown, the above-mentioned adjusting member 323 includes a penetrating portion 3231 and an abutting portion 3232. The abutting portion 3232 is connected to the penetrating portion 3231. The penetrating portion 3231 passes through the movable member 322 and is threadedly connected to the connecting member 321. When the adjusting member 323 is rotated, the penetrating portion 3231 will drive the abutting portion 3232 to move together. The movable member 322 can gradually approach the connecting member 321 under the abutting action of the abutting portion 3232 to achieve the clamping effect on the grating. In addition, as Figure 4 shown, the diameter of the abutting portion 3232 is larger than the diameter of the penetrating portion 3231. The side surface of the abutting portion 3232 can be provided with an anti-slip structure (protrusions, stripes, etc.) to facilitate the user to rotate the adjusting member 323.
[0041] The above-mentioned abutting portion 3232 is made of a magnetic material (a material containing metals such as iron and nickel that can be attracted by a magnetic field). The above-mentioned movable member 322 is a magnetic member (which can be a kind of magnet). Or, the above-mentioned abutting portion 3232 is a magnetic member, and the above-mentioned movable member 322 is made of a magnetic material. The abutting portion 3232 and the movable member 322 are magnetically attracted. Through the above design, when the abutting portion 3232 moves towards the side away from the connecting member 321, the movable member 322 can be magnetically attracted. In this way, the movable member 322 can always move along with the abutting portion 3232 during the adjustment of the adjusting member 323, which is convenient for clamping the grating.
[0042] In some embodiments, as Figure 3 , Figure 4As shown, a through hole 06 is provided at the rotation center of the rotating part 12. The clamping head 32 is connected with a rotating disk 33 at least partially located in the through hole 06, and the rotating disk 33 is non-rotatable relative to the clamping head 32. A first scale 01 is provided on the rotating disk 33, and a second scale 02 is provided at the edge of the rotating part 12 near the through hole 06. The first scale 01 and the second scale 02 are correspondingly arranged. Through the above design, on the one hand, the center of the rotating disk 33 can be made to coincide with the rotation axis of the rotating part 12 through the relative crossing and corresponding effect of the first scale 01 and the second scale 02 (it should be noted that when assembling the grating holder 300, by identifying the relative situation of the first scale 01 and the second scale 02, if the scales of the first scale 01 and the second scale 02 correspond to each other at least at three different positions, it can be determined that the rotating disk 33 is arranged at the center of the through hole 06, that is, the rotation axes of the clamping head 32 and the rotating part 12 coincide with each other.), thereby facilitating ensuring that the rotation axis of the clamping head 32 coincides with the rotation axis of the rotating part 12; on the other hand, the deflection angle of the grating can be accurately judged through the offset situation of the first scale 01 and the second scale 02, that is, it is convenient to display the incident angle of the light.
[0043] Preferably, please refer to Figure 8 、 Figure 9 For understanding, the above first scale 01 includes four first calibration scales 011, and the four first calibration scales 011 are evenly arranged around the edge of the through hole 06 at 90 degrees to each other. The connection lines of the two first calibration scales 011 arranged oppositely through the center of the through hole 06 are perpendicular to each other and both pass through the center of the through hole 06; correspondingly, the above second scale 02 includes four second calibration scales 021, and the four second calibration scales 021 are evenly arranged around the edge of the rotating disk 33 near the rotating part 12 at 90 degrees to each other. The connection lines of the two second calibration scales 021 arranged oppositely through the center of the rotating disk 33 are perpendicular to each other and both pass through the center of the rotating disk 33; through the above design, when installing the grating holder 300, if the connection lines of the two first calibration scales 011 arranged oppositely through the center of the through hole 06 and the connection lines of the two second calibration scales 021 arranged oppositely through the center of the rotating disk 33 are both on the same straight line, it can be determined that the rotation axis of the rotating disk 33 coincides with the rotation axis of the rotating part 12, that is, it can be determined that the rotation axis of the clamping head 32 coincides with the rotation axis of the rotating part 12 through the above structure.
[0044] In some embodiments, as Figure 6 、 Figure 7 shown, the receiving device 200 includes a receiving head 21, an adjusting seat 23 and a second lifting base 22. The adjusting seat 23 is rotationally connected to the lifting end of the second lifting base 22, and the receiving head 21 is arranged on the adjusting seat 23. The lifting base can adjust the height position of the receiving head 21, and the adjusting seat 23 is used to adjust the elevation angle and depression angle of the receiving head 21 to facilitate more accurately receiving the diffracted light.
[0045] The above-mentioned adjusting base 23 includes a base body 231, a deflecting body 232, and an adjusting knob 233. The deflecting body 232 is movably connected to the base body 231. The adjusting knob 233 is threadedly connected to the base body 231 and abuts against the deflecting body 232 to cause the deflecting body 232 to deflect and tilt. The receiving head 21 is fixed to the deflecting body 232. Please refer to again Figure 6 、 Figure 7 There are a plurality of adjusting knobs 233 provided on the above-mentioned base body 231. By rotating the adjusting knobs 233 at different positions on the base body 231 to abut against different parts of the deflecting body 232, the depression angle and elevation angle of the deflecting body 232 are changed. Since the receiving head 21 is fixed to the deflecting body 232, the receiving head 21 will deflect together with the deflecting body 232. In summary, through the above design, the depression angle and elevation angle of the receiving head 21 can be adjusted to facilitate more accurate reception of diffracted light.
[0046] In some embodiments, as Figure 1 、 Figure 6 shown, the above-mentioned transmitting device 400 includes a transmitting head 41 and a third lifting base 42. The transmitting head 41 is rotatably connected to the lifting end of the third lifting base 42, so that the height position of the transmitting head 41 can be adjusted as needed. The transmitting head 41 is used to be connected to a light source through an optical fiber.
[0047] In some other embodiments, the above-mentioned transmitting device 400 further includes a first lens assembly. The first lens assembly is connected to the transmitting head 41. The first lens assembly is used to convert the light emitted by the transmitting head 41 into parallel light, so that the light emitted by the transmitting head 41 can be completely incident into the grating for diffraction, improving the accuracy of the test results of the grating diffraction efficiency test device.
[0048] The above-mentioned receiving device 200 further includes a second lens assembly. The second lens assembly is connected to the receiving head 21. The second lens assembly is used to converge the diffracted light, so as to more accurately measure the diffracted light intensity, and thus is beneficial to improving the accuracy of the test results of the grating diffraction efficiency test device.
[0049] Under the action of the above-mentioned first lens assembly and second lens assembly, the grating diffraction efficiency test device provided by the present application can use a full-spectrum light source as the diffraction light source, and using a full-spectrum light source can measure the diffraction efficiency of the grating for all color lights at one time without replacing the light source, which is very convenient.
[0050] It should be noted that the light source used in the present application can be a laser light source. Since the laser has very good collimation and does not need to be adjusted through a lens, when a laser is used as the diffraction light source, the above-mentioned first lens assembly and second lens assembly can be not provided.
[0051] In some embodiments, as Figure 1 、 Figure 2 shown, there are at least two fixing parts 11, and they are arranged at the edge of the rotating part 12, so that it is convenient to set the grating holder 300 at the center of the rotating part 12.
[0052] In some embodiments, as Figure 1 、 Figure 2 shown, the fixing part 11 includes a plurality of brackets 111, and the plurality of brackets 111 are arranged around the edge of the rotating part 12. In this way, when setting the grating holder 300 at the center of the rotating part 12, there can be a larger space and a simpler structure.
[0053] The above-mentioned bracket 111 includes a clamping part 1111 and a fourth lifting base 1112. The clamping part 1111 is connected to the lifting end of the fourth lifting base 1112. A sliding groove 001 is opened on the side of the clamping part 1111 close to the rotating part 12, and a clamping part 002 is arranged at the edge of the rotating part 12. The clamping part 1111 is slidably clamped with the clamping part 002 at the edge of the rotating part 12 through the sliding groove 001. Through the above design, the height of the rotating part 12 from the tabletop S can be adjusted by the fourth lifting assembly. Since the fixing part 11 is arranged at the edge of the rotating part 12, and the edge is in an eccentric position, instability is likely to occur. By arranging a plurality of brackets 111, the stability of the rotating part 12 during rotation can be enhanced.
[0054] In some embodiments, as Figure 1 、 Figure 2 shown, a third scale 03 is arranged on the fixing part 11, and a fourth scale 04 is arranged on the edge of the rotating part 12 close to the fixing part 11. The third scale 03 and the fourth scale 04 are arranged correspondingly to display the rotation angle of the rotating part 12. When the rotating part 12 rotates, the third scale 03 and the fourth scale 04 may move relatively. Through the positional relationship between the third scale 03 and the fourth scale 04, the rotation angle of the rotating part 12 can be accurately displayed. Since the receiving device 200 is fixed on the rotating part 12, the rotation angle of the rotating part 12 is the rotation angle of the receiving device 200, so that the receiving device 200 can monitor and detect the diffracted light from the best position.
[0055] In some embodiments, as Figure 6 shown, the rotating part 12 provided in this application can be a breadboard. Many regularly or evenly spaced holes or grooves are opened on the breadboard. The receiving device 200 is assembled and fixed on the rotating part 12 through the holes on the breadboard. Therefore, it is very convenient to fix the receiving device 200 at any position on the breadboard, which is beneficial to the smooth progress of the test process.
[0056] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0057] It should be noted that in this text, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.
[0058] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A grating diffraction efficiency testing device, characterized in that: include: A test bench (100), the test bench (100) comprising a rotating part (12) and a fixed part (11), the fixed part (11) being used to be fixed on a table surface (S), and the rotating part (12) being rotatably connected to the fixed part (11); a receiving device (200), the receiving device (200) being arranged on the rotating part (12), the receiving device (200) being selectively able to follow the rotating part (12) to make circular motion, and being used to receive diffracted light formed by the grating; A grating frame (300), the grating frame (300) being arranged at the center of the circular motion of the receiving device (200), the grating frame (300) being used to clamp a grating; An emitting device (400), the emitting device (400) being used to be fixed on a table (S) or a fixing part (11) and used to emit light toward the grating; The rotating part (12) can selectively drive the receiving device (200) to rotate around the grating frame (300) at any angle.
2. The grating diffraction efficiency testing device according to claim 1, characterized in that: The grating frame (300) comprises a first lifting base (31) and a clamping head (32); the clamping head (32) is rotatably connected to the lifting end of the first lifting base (31); and the clamping head (32) can be deflected with the rotation center of the rotating part (12) as an axis.
3. The grating diffraction efficiency testing device according to claim 2, characterized in that: The clamping head (32) comprises a connecting piece (321), a movable piece (322) and an adjusting piece (323); the connecting piece (321) is rotatably connected to the lifting end of the first lifting base (31); the movable piece (322) and the connecting piece (321) are arranged opposite to each other and a gap (05) is formed therebetween; the gap (05) is used to set a grating; one end of the adjusting piece (323) is threadedly connected to the connecting piece (321), and the other end is abutted against a side of the movable piece (322) away from the connecting piece (321); The adjusting member (323) is rotated to adjust the size of the gap (05) between the movable member (322) and the connecting member (321).
4. The grating diffraction efficiency testing device according to claim 3, characterized in that: The adjusting member (323) comprises a penetration portion (3231) and a supporting portion (3232), wherein the supporting portion (3232) is connected to the penetration portion (3231), and the penetration portion (3231) passes through the movable member (322) and is threadedly connected to the connecting member (321); The abutting portion (3232) is made of magnetic material, and the movable part (322) is a magnetic part, or the abutting portion (3232) is a magnetic part, and the movable part (322) is made of magnetic material, and the abutting portion (3232) and the movable part (322) are magnetically attracted.
5. The grating diffraction efficiency testing device according to claim 2, characterized in that: A through hole (06) is provided at the rotation center of the rotating part (12); the clamping head (32) is connected to a rotating disk (33) at least partially located in the through hole (06); a first scale (01) is provided on the rotating disk (33); a second scale (02) is provided at the edge of the rotating part (12) close to the through hole (06); the first scale (01) and the second scale (02) are provided correspondingly.
6. The grating diffraction efficiency testing device according to claim 1, characterized in that: The receiving device (200) comprises a receiving head (21), an adjusting seat (23) and a second lifting base (22); the adjusting seat (23) is rotatably connected to a lifting end of the second lifting base (22); and the receiving head (21) is arranged on the adjusting seat (23); The adjustment seat (23) comprises a seat body (231), a deflection body (232) and an adjustment button (233); the deflection body (232) is movably connected to the seat body (231); the adjustment button (233) is threadedly connected to the seat body (231) and abuts against the deflection body (232) to cause the deflection body (232) to deflect and tilt; and the receiving head (21) is fixed on the deflection body (232).
7. The grating diffraction efficiency testing device according to claim 1, characterized in that: The transmitting device (400) comprises a transmitting head (41) and a third lifting base (42); the transmitting head (41) is rotatably connected to a lifting end of the third lifting base (42); and the transmitting head (41) is used to be connected to a light source via an optical fiber.
8. The grating diffraction efficiency testing device according to claim 1, characterized in that: At least two fixing parts (11) are provided and are arranged on the edge of the rotating part (12).
9. The grating diffraction efficiency testing device according to claim 1, characterized in that: The fixed portion (11) comprises a plurality of brackets (111), and the plurality of brackets (111) are arranged around the edge of the rotating portion (12); The bracket (111) comprises a locking member (1111) and a fourth lifting base (1112); the locking member (1111) is connected to the lifting end of the fourth lifting base (1112); a sliding groove (001) is provided on a side of the locking member (1111) close to the rotating part (12); a locking portion (002) is provided on the edge of the rotating part (12); and the locking member (1111) is slidably engaged with the locking portion (002) on the edge of the rotating part (12) through the sliding groove (001).
10. The grating diffraction efficiency testing device according to claim 1, characterized in that: The fixed portion (11) is provided with a third scale (03), and the rotating portion (12) is provided with a fourth scale (04) near the edge of the fixed portion (11), and the third scale (03) and the fourth scale (04) are arranged correspondingly to display the rotation angle of the rotating portion (12).