Cross four-light-path photometric measurement device

Abstract

The utility model discloses a crossed four-light-path luminosity measuring device, which comprises an equilateral octagonal four-light-path luminosity measurer, and the whole equilateral octagonal four-light-path luminosity measurer takes the shape of an equilateral octagon. Light path through holes are formed in the front end surface of the equilateral octagonal four-light-path photometric measurer and three surfaces which are continuously connected anticlockwise between the front end surface of the equilateral octagonal four-light-path photometric measurer; a containing dustproof box is arranged below the equilateral octagonal four-light-path luminosity measurer, a containing groove matched with the equilateral octagonal four-light-path luminosity measurer in shape is formed in the middle of the upper end face of the containing dustproof box, and cleaning heads corresponding to the light path through holes in position are arranged on the eight inner walls of the containing groove. According to the equilateral octagonal four-light-path luminosity measurer disclosed by the utility model, the four mutually crossed light path through holes are formed in the outer surface of the equilateral octagonal four-light-path luminosity measurer, and the light intensity in different directions can be measured at the same time through the design that the light paths are mutually crossed, so that the measurement efficiency and precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a photometric measurement device with four cross light paths. Background Art

[0002] Optical path photometric device is a device used to measure the intensity of light. Its measurement principle is mainly based on the basic principle of photometry. According to the definition of photometry, photometry refers to the luminous flux received per unit area, and luminous flux refers to the light energy passing through a certain cross section per unit time. Therefore, the core part of the photometric device is the component that receives light, also known as a photoelectric device. Optical path photometric devices can be divided into two categories: visual method and objective method. The visual method is that the human eye directly participates in the measurement process. The human eye has a sensitive judgment on whether the brightness of two adjacent areas is equal. Therefore, all visual photometric measurements are reduced to comparing the brightness of two surfaces. The objective measurement photometric instrument uses a photocell or a photomultiplier tube as a receiver. The photoelectric receiver has its own frequency response characteristics. In order to be consistent with the subjective vision of the human eye, it must be equipped with a filter corrected by the spectral light function. Because the response characteristics of the correction filter are directly related to the illuminance or luminous flux, all photometric instruments using objective measurement are reduced to the measurement of illuminance or luminous flux.

[0003] However, the optical path photometric measuring device has the problem that a single light source cannot simultaneously perform absorbance measurements at two wavelengths. The prior art patent number CN216955731U is a cross dual optical path photometric measuring device, which uses two incident light intensity signals to calculate two absorbance values, and expresses the final measurement result as an arithmetic mean, so that the data error obtained is minimized, and the out-of-roundness error of the circular colorimetric tube can be effectively eliminated, so as to further ensure that the colorimetry obtains the most accurate and reliable data under the same conditions (for example, light and temperature conditions, etc.), thereby solving the above problem.

[0004] However, this optical path photometric measuring device only takes two absorbance values ​​and obtains the final measurement result by taking the arithmetic mean value, and the accuracy of the result is low. When this device is not used, the inside of the optical path through hole of the device will gradually be contaminated with dust, and the contaminated dust will block the light, resulting in a reduction in light flux or a weakening of light intensity, thereby affecting the accuracy of the measurement result. In addition, dust may also change the refractive index of the optical path, causing the optical path to deviate or scatter, further reducing the accuracy of the measurement; therefore, it does not meet the existing needs, and we propose a cross 4 optical path photometric measuring device. Utility Model Content

[0005] The purpose of the utility model is to provide a cross-4 optical path photometric measuring device to solve the problem that the optical path photometric measuring device proposed in the above background technology only takes two absorbance values ​​and obtains the final measurement result by taking the arithmetic mean, and the accuracy of the result is low. When the device is not used, the inside of the optical path through hole of the device will gradually be contaminated with dust, and the contaminated dust will block the light, resulting in a reduction in luminous flux or a weakening of light intensity, thereby affecting the accuracy of the measurement result. In addition, the dust may also change the refractive index of the optical path, resulting in optical path deviation or scattering, further reducing the accuracy of the measurement.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cross 4-light path photometric device, comprising an equilateral octagonal 4-light path photometric device, the equilateral octagonal 4-light path photometric device presents an equilateral octagon as a whole, and the front end face of the equilateral octagonal 4-light path photometric device and three faces continuously connected to the front end face in a counterclockwise direction are provided with light path through holes;

[0007] A storage dust box is provided below the equilateral octagonal four-light path photometer, and a storage groove whose shape matches the equilateral octagonal four-light path photometer is provided in the middle position of the upper end surface of the storage dust box, and cleaning heads corresponding to the positions of the light path through holes are provided on the eight inner walls of the storage groove.

[0008] Preferably, the lower side of the storage dust box is fixedly mounted on a stepper motor, the output shaft of the stepper motor is connected to a transmission shaft via a coupling, and a bevel gear A is fixedly sleeved on the outer surface of the transmission shaft.

[0009] Preferably, the eight end corners of the outer surface of the bevel gear A are meshed with a bevel gear B, the axis of the bevel gear B is connected to a gear shaft, and a synchronous sprocket is fixedly sleeved on the outer surface of the gear shaft.

[0010] Preferably, a rotating shaft is provided at a middle position above the synchronous sprocket near the inner wall of the storage groove and at an upper position near the inner wall of the storage groove, and a synchronous chain is used to connect the two rotating shafts and a synchronous sprocket in the same vertical column in series.

[0011] Preferably, one side of the rotating shaft is provided with an internal thread groove located inside the receiving groove, the internal thread groove is provided with an external thread column matching the internal thread thereof, and a cleaning head having the same diameter as the inner wall of the optical path through hole is fixedly provided on the surface of the external thread column facing the equilateral octagonal four-optical path photometer;

[0012] The surface of the external threaded column facing the rotating shaft is provided with a square slot extending into the interior of the external threaded column, and a square insertion rod is provided inside the square slot. The cross-sectional shape of the inner wall of the square slot is a square, the outer surface of the square insertion rod is fitted with the inner wall of the square slot, and the square slot is slidably connected to the square insertion rod, and the surface of the square insertion rod facing the rotating shaft is fixed to the rotating shaft.

[0013] Preferably, a circular cover plate located at the lower end surface of the equilateral octagonal four-light path photometer is provided below the stepper motor, and the equilateral octagonal four-light path photometer and the circular cover plate are fixed by screws;

[0014] A lens is fixedly mounted on one side of the optical path through hole, a detector is also fixedly mounted on one side of the lens, and a fixing head is fixedly mounted on the middle position of the upper end surface of the equilateral octagonal four-path photometer.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model is provided with four mutually intersecting optical path through holes on the outer surface of an equilateral octagonal four-optical path photometer. Through the design of the mutually intersecting optical paths, the light intensity in different directions can be measured simultaneously. Each optical path has a lens and a detector. The optical paths intersect with each other. When the light passes through the device, it will be divided into four directions of light. The light in each direction will pass through a lens and a detector. The detector will measure the light intensity in each direction and transmit the data to a computer or other data processing equipment for analysis and processing. The advantage of the cross-4 optical path photometer is that it can measure the light intensity in multiple directions at the same time, which improves the efficiency and accuracy of the measurement. In addition, the intersection angle and measurement range of the optical path can be changed by adjusting the position and angle of the lens and the detector to meet different measurement requirements;

[0017] 2. The utility model can, when the device is not in use, cover the outer surface of the equilateral octagonal four-path photometer with a dust-proof box, and use a stepper motor to rotate the cleaning head to penetrate into the optical path through hole on the outer surface of the equilateral octagonal four-path photometer. The inner wall can be cleaned by moving the cleaning head deep into the optical path through hole. When the equilateral octagonal four-path photometer is not needed for a period of time, the cleaning head is kept inside the optical path through hole to prevent the inside of the optical path through hole from being contaminated with dust. When it is needed, the stepper motor is started to drive the cleaning head in the reverse direction to rotate and move outward, so as to perform secondary cleaning on the inner wall of the optical path through hole, thereby ensuring the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model when the equilateral octagonal four-light path photometer is inserted into the interior of the storage dust box;

[0020] Figure 3 For this utility model Figure 2 A magnified view of the structure at center.

[0021] In the figure: 1. equilateral octagonal four-light path photometer; 2. storage dust box; 3. storage slot; 4. stepper motor; 5. transmission shaft; 6. bevel gear A; 7. bevel gear B; 8. gear shaft; 9. synchronous sprocket; 10. shaft; 11. synchronous chain; 12. internal thread groove; 13. cleaning head; 14. external thread column; 15. square slot; 16. square plug rod; 17. optical path through hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] The stepper motor 4 (model 60DNMA2), the synchronous sprocket 9 (model 04C) and the square plug rod 16 (model 304) mentioned in the utility model can all be purchased from the market or obtained through private customization.

[0024] See also Figures 1 to 3 The utility model provides an embodiment: a cross-four-light-path photometric device, comprising an equilateral octagonal four-light-path photometric device 1, the equilateral octagonal four-light-path photometric device 1 is in an equilateral octagon shape as a whole, and the front end face of the equilateral octagonal four-light-path photometric device 1 and the three faces continuously connected to the front end face counterclockwise are provided with light path through holes 17; the outer surface of the equilateral octagonal four-light-path photometric device 1 is provided with four mutually cross-four-light-path through holes 17, through the design of the four mutually cross-four-light paths, the light intensity in different directions can be measured simultaneously, and each light path has a lens and A detector, these 4 light paths cross each other. When light passes through this device, it will be divided into light in 4 directions. The light in each direction will pass through a lens and a detector. The detector will measure the light intensity in each direction and transmit the data to a computer or other data processing equipment for analysis and processing. The advantage of the cross-4 light path photometric measurement device is that it can measure the light intensity in multiple directions at the same time, which improves the efficiency and accuracy of the measurement. In addition, the intersection angle and measurement range of the light path can be changed by adjusting the position and angle of the lens and the detector to meet different measurement needs;

[0025] A storage dust box 2 is provided below the equilateral octagonal four-path photometer 1, and a storage groove 3 whose shape matches that of the equilateral octagonal four-path photometer 1 is provided in the middle position of the upper end surface of the storage dust box 2, and cleaning heads 13 corresponding to the positions of the optical path through holes 17 are provided on the eight inner walls of the storage groove 3; a stepper motor 4 is fixedly installed on the lower side of the interior of the storage dust box 2, and the output shaft of the stepper motor 4 is connected to a transmission shaft 5 through a coupling, and a bevel gear A6 is fixedly sleeved on the outer surface of the transmission shaft 5; when the equilateral octagonal four-path photometer 1 will not be used for a period of time, the equilateral octagonal four-path photometer 1 is aligned with the storage groove 3 on the outer surface of the storage dust box 2 and inserted, and then the stepper motor 4 is started, and the transmission shaft 5 connected thereto and the bevel gear A6 fixedly sleeved on the outer surface of the transmission shaft 5 are driven by the stepper motor 4 to rotate.

[0026] The eight end corners of the outer surface of the bevel gear A6 are all meshed with a bevel gear B7, the axis of the bevel gear B7 is connected to the gear shaft 8, and the outer surface of the gear shaft 8 is fixedly sleeved with a synchronous sprocket 9; when the bevel gear A6 rotates, the bevel gear B7 meshing with it and the gear shaft 8 connected to the outer surface of the bevel gear B7 will also rotate accordingly, and when the gear shaft 8 rotates, the synchronous sprocket 9 fixedly sleeved on the outer surface of the gear shaft 8 will rotate synchronously.

[0027] A rotating shaft 10 is provided above the synchronous sprocket 9 at the middle position near the inner wall of the storage groove 3 and at the upper side position near the inner wall of the storage groove 3. The two rotating shafts 10 and a synchronous sprocket 9 located in the same vertical column are connected in series through a synchronous chain 11; when the synchronous sprocket 9 rotates, the rotating shaft 10 connected in series with it through the synchronous chain 11 will rotate synchronously therewith.

[0028] An internal thread groove 12 is provided on one side of the rotating shaft 10 and is located inside the receiving groove 3. An external thread column 14 matching the internal thread is provided inside the internal thread groove 12. A cleaning head 13 having the same diameter as the inner wall of the optical path through hole 17 is fixedly provided on the surface of the external thread column 14 facing the equilateral octagonal four-optical path photometer 1.

[0029] The surface of the external threaded column 14 facing the rotating shaft 10 is provided with a square slot 15 extending into the interior of the external threaded column 14, and the interior of the square slot 15 is provided with a square plug rod 16, the inner wall cross-section of the square slot 15 is square, the outer surface of the square plug rod 16 fits with the inner wall of the square slot 15, and the square slot 15 and the square plug rod 16 are slidably connected, and the surface of the square plug rod 16 facing the rotating shaft 10 is fixed to the rotating shaft 10; during the rotation of the rotating shaft 10, the square plug rod 16 fixed thereto will also rotate accordingly, because the outer surface of the square plug rod 16 fits with the inner wall of the square slot 15 located on the outer surface of the external threaded column 14, as the square plug rod 16 rotates, the external threaded column 14 will rotate synchronously, and the external threaded column 14 will rotate synchronously with the rotation of the square plug rod 16, and the external threaded column 14 will rotate synchronously with the rotation of the square plug rod 16 through the thread transmission of the internal thread groove 12. The threaded column 14 will rotate and move back and forth inside the internal thread groove 12. When the external threaded column 14 rotates and moves inward, it will enter the interior of the optical path through hole 17 located on the outer surface of the equilateral octagonal four-path photometer 1, and clean the dust on the inner wall of the optical path through hole 17 during the operation of the equilateral octagonal four-path photometer 1. When the equilateral octagonal four-path photometer 1 is not needed for a period of time, the cleaning head 13 will stay inside the optical path through hole 17 to prevent the interior of the optical path through hole 17 from being contaminated with dust. When it is needed, the stepper motor 4 is started here to drive the cleaning head 13 in the reverse direction to rotate and move outward, so as to perform secondary cleaning on the inner wall of the optical path through hole 17, thereby ensuring the accuracy of the detection result.

[0030] A circular cover is provided below the stepper motor 4 and is located on the lower end surface of the equilateral octagonal four-path photometer 1. The equilateral octagonal four-path photometer 1 and the circular cover are fixed by screws. The circular cover can protect the internal structure of the dustproof box 2.

[0031] A lens is fixedly installed on one side of the optical path through hole 17, and a detector is provided on one side of the lens, which is also fixedly installed inside the optical path through hole 17. A fixing head is fixedly provided in the middle position of the upper end surface of the equilateral octagonal four-optical path photometer 1; by fixing, the entire device can be installed in the corresponding position.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A cross-four-light-path photometric device, comprising an equilateral octagonal four-light-path photometric device (1), characterized in that: The equilateral octagonal four-light path photometer (1) is in the shape of an equilateral octagon as a whole, and the front end face of the equilateral octagonal four-light path photometer (1) and three faces continuously connected to the front end face in a counterclockwise direction are provided with light path through holes (17); A storage dust box (2) is provided below the equilateral octagonal four-light path photometer (1); a storage groove (3) having a shape matching that of the equilateral octagonal four-light path photometer (1) is provided in the middle of the upper end surface of the storage dust box (2); and cleaning heads (13) corresponding to the positions of the light path through holes (17) are provided on the eight inner walls of the storage groove (3).

2. A cross-four-light-path photometric measuring device according to claim 1, characterized in that: The lower side of the storage dustproof box (2) is fixedly mounted on a stepper motor (4), the output shaft of the stepper motor (4) is connected to a transmission shaft (5) via a coupling, and a bevel gear A (6) is fixedly sleeved on the outer surface of the transmission shaft (5).

3. A cross-four-light-path photometric measuring device according to claim 2, characterized in that: The eight end corners of the outer surface of the bevel gear A (6) are all meshed with a bevel gear B (7), the axis of the bevel gear B (7) is connected to a gear shaft (8), and the outer surface of the gear shaft (8) is fixedly sleeved with a synchronous sprocket (9).

4. The cross-four-light-path photometric measuring device according to claim 3, characterized in that: A rotating shaft (10) is provided above the synchronous sprocket (9) at a middle position close to the inner wall of the receiving groove (3) and at an upper position close to the inner wall of the receiving groove (3). Two rotating shafts (10) and a synchronous sprocket (9) located in the same vertical row are serially driven via a synchronous chain (11).

5. The cross-four-light-path photometric measuring device according to claim 4, characterized in that: An internal thread groove (12) located inside the receiving groove (3) is provided on one side of the rotating shaft (10); an external thread column (14) matching the internal thread is provided inside the internal thread groove (12); a cleaning head (13) having the same diameter as the inner wall of the optical path through hole (17) is fixedly provided on the surface of the external thread column (14) facing the equilateral octagonal four-optical path photometer (1); The surface of the external thread column (14) facing the rotating shaft (10) is provided with a square slot (15) extending into the interior of the external thread column (14); a square insertion rod (16) is provided inside the square slot (15); the inner wall cross-section of the square slot (15) is square; the outer surface of the square insertion rod (16) is fitted with the inner wall of the square slot (15); the square slot (15) and the square insertion rod (16) are slidably connected; the surface of the square insertion rod (16) facing the rotating shaft (10) is fixed to the rotating shaft (10).

6. The cross-four-light-path photometric measuring device according to claim 2, characterized in that: A circular cover plate is provided below the stepping motor (4) and is located on the lower end surface of the equilateral octagonal four-light path photometer (1), and the equilateral octagonal four-light path photometer (1) and the circular cover plate are fixed by screws; A lens is fixedly mounted on one side of the optical path through hole (17), a detector is also fixedly mounted on one side of the lens and a fixed head is fixedly mounted on the middle position of the upper end surface of the equilateral octagonal four-optical path photometer (1).

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