Novel ultraviolet and visible spectrophotometer

Abstract

The novel ultraviolet and visible spectrophotometer comprises an ultraviolet and visible spectrophotometer body, a plano-concave reflective mirror, a reflective mirror A, a diffraction grating, a reflective mirror, a reflective mirror C, a half-reflecting mirror, a reflective mirror D and a reflective mirror E, two sets of cuvettes and two sets of sample detectors are respectively arranged on the ultraviolet and visible spectrophotometer body, and the two sets of cuvettes are respectively used as reference cuvettes and sample cuvettes; the xenon lamp, the plano-concave reflective mirror, the reflective mirror A, the diffraction grating, the reflective mirror, the reflective mirror C, the half-reflecting mirror, the reflective mirror D and the reflective mirror E are installed in the shell. One path of light source of the xenon lamp of the ultraviolet and visible spectrophotometer body is divided into two beams, one beam passes through the reference cuvette, the other beam passes through the sample cuvette, and corresponding data of liquid samples in the reference cuvette and the sample cuvette can be synchronously obtained after the detection of the sample detectors at the rear side ends of the reference cuvette and the sample cuvette. Detection personnel can compare two paths of detection data, and can accurately obtain corresponding data of a detected sample.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a novel ultraviolet-visible spectrophotometer. Background Art

[0002] The visible spectrophotometer based on ultraviolet light, also known as a spectrometer, decomposes the complex light generated by a xenon lamp or the like into spectral lines, and then the spectral lines pass through the liquid sample substance in the sample cuvette, and the absorbance (OD value) of the substance is detected by a sample detector. Specifically, when a spectral line with a specific wavelength passes through the substance to be measured in the sample cuvette, the substance will absorb part of the light energy, and the unabsorbed part of the light will continue to propagate through the substance. After the sample detector at the rear end of the sample cuvette receives the optical signal, the sample detector can calculate the absorbance of the detected substances such as microorganisms in the solution in the sample cuvette by measuring the intensity difference between the incident light and the transmitted light, and then infer the concentration or other related properties of the substances in the solution in the sample cuvette. It is mainly applied in the fields of biology, clinical medicine, materials science, etc.

[0003] The spectral lines generated by the existing spectrometers such as xenon lamps have only one path, and correspondingly, there is only one set of sample cuvettes and sample detectors. In fact, the ultraviolet light generated by the single spectrometer xenon lamp is affected by various factors (including factors such as temperature and the non-levelness of the equipment), and there is a probability of diffraction, drift, and chromatic aberration of the ultraviolet light, which will lead to deviation in the test effect and cannot guarantee the accuracy of the detection data of the corresponding substances. Summary of the Utility Model

[0004] In order to overcome the disadvantages of the existing spectrometer due to its structure limitations as described in the background, the utility model provides an ultraviolet-visible spectrophotometer body. Under the combined action of relevant mechanisms, a beam of light source is equally divided into two beams by a reflecting mirror, one beam passes through a reference cuvette, and the other beam passes through a sample cuvette. After being detected by the sample detectors at the rear ends of the reference cuvette and the sample cuvette, the corresponding data of the liquid samples in the reference cuvette and the sample cuvette can be obtained synchronously, which provides a favorable technical support for judging the accuracy of sample detection.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] New type ultraviolet-visible spectrophotometer, comprising an ultraviolet-visible spectrophotometer body, a plano-concave reflector, reflector A, a diffraction grating, reflector B, reflector C, a semi-reflector, reflector D, and reflector E; characterized in that the cuvettes and sample detectors of the ultraviolet-visible spectrophotometer body are each provided with two sets, and the two sets of cuvettes are respectively used as a reference cuvette and a sample cuvette; the xenon lamp of the ultraviolet-visible spectrophotometer body is inclined and installed in the middle of the rear side end inside the housing of the ultraviolet-visible spectrophotometer body, and the plano-concave reflector and reflector C are installed at intervals in the middle of one side end inside the housing; reflector A and reflector B are installed at intervals in the middle of the other side end inside the housing, reflector D and reflector E are respectively installed in the middle of the front end inside the housing, and the diffraction grating is installed in the middle of the housing and located between the plano-concave reflector and reflector C; the semi-reflector is installed inside the housing between reflector D and reflector B, and light isolation plates are installed at the front side ends of the housing of reflector D and reflector B. Light-transmitting openings are respectively arranged at both side ends of the light isolation plates. The reference cuvette and the sample cuvette are respectively placed at the front end of the light isolation plate in a left-right distribution, and the two sets of sample detectors are respectively installed at the front side ends of the reference cuvette and the sample cuvette.

[0007] Further, the condensing point of the xenon lamp is inclined and aligned with the center point position of the light spot of the plano-concave reflector, the reflecting point of the plano-concave reflector is inclined and aligned with the center point position of the light spot of reflector A, and the reflecting point of reflector A is inclined and aligned with the center point position of the light spot of the diffraction grating.

[0008] Further, the reflecting point of the diffraction grating is inclined and aligned with the center point position of the light spot of reflector B, the reflecting point of reflector B is aligned with the center point position of the light spot of reflector C, and the reflecting point of reflector C is inclined and aligned with the center point position of the light spot of the semi-reflector.

[0009] Further, the two reflecting surfaces of the semi-reflector are respectively inclined and aligned with the center point positions of the light spots of reflector D and reflector E.

[0010] Further, the reflecting points of reflector D and reflector E respectively irradiate the rear center light-receiving points of the reference cuvette and the

[0011] sample cuvette through the light-transmitting openings at both side ends of the light isolation plate, and the front light-transmitting points of the reference cuvette and the sample cuvette are respectively aligned with the rear side end light-receiving ends of the two sets of sample detectors.

[0012] Further, the outer sides of the plano-concave reflector, reflector A, reflector B, reflector C, reflector D, and reflector E are non-transparent structures.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: Based on the ultraviolet-visible spectrophotometer body, under the combined action of relevant mechanisms, one path of the light source of the xenon lamp of the ultraviolet-visible spectrophotometer body is equally divided into two beams by multiple reflectors. One beam passes through the reference cuvette, and the other beam passes through the sample cuvette. After being detected by the sample detector at the rear ends of the reference cuvette and the sample cuvette, the corresponding data of the liquid samples in the reference cuvette and the sample cuvette can be obtained synchronously. Due to the data detected by two paths simultaneously, the tester can compare the data detected by the two paths and accurately obtain the corresponding data of the detected sample, which provides favorable technical support for judging the accuracy of sample detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below with reference to the drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0016] Figure 2 It is a schematic diagram of the partial structure of the overall structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Figure 1 、 2As shown in the figure, the new ultraviolet-visible spectrophotometer includes an ultraviolet-visible spectrophotometer body 1 (a mature technology, the principle of which will not be elaborated in this application, nor will any protection be provided for itself), a plano-concave mirror 201, a mirror A 211, a diffraction grating 202, a mirror B 212, a mirror C 203, a semi-reflective mirror 213, a mirror D 206, and a mirror E 207. There are two sets of cuvettes and sample detectors in the ultraviolet-visible spectrophotometer body 1. The two sets of cuvettes are respectively used as a reference cuvette 204 and a sample cuvette 209. The xenon lamp 210 of the ultraviolet-visible spectrophotometer body is inclined and installed in the middle of the rear end inside the housing 101 of the ultraviolet-visible spectrophotometer body. The plano-concave mirror 201 and the mirror C 203 are installed at a certain distance from front to back in the middle of the right end inside the housing 101. The mirror A 211 and the mirror B 212 are installed at a certain distance from front to back in the middle of the left end inside the housing 101. The mirror D 206 and the mirror 207 are installed at a certain distance from left to right in the middle of the front end inside the housing. The diffraction grating 202 is installed in the middle of the housing and is located between the plano-concave mirror 201 and the mirror C 203. The semi-reflective mirror 213 is installed inside the housing 101 between the mirror D 206 and the mirror 207. A partition 3 is transversely welded to the front side end housing of the mirror D 206 and the mirror E 207. There is a rectangular light-transmitting opening 31 in the middle of both side ends of the partition 3. The reference cuvette 204 and the sample cuvette 209 are installed in the housing at the front end of the partition 3 in a left-right distribution. The two sets of sample detectors 205 and 206 are respectively installed at the front side end of the reference cuvette 204 and the sample cuvette 209.

[0018] Figure 1 , 2As shown in the figure, the condensing point of the xenon lamp 210 is tilted and aligned with the center point position of the light spot of the plano-concave reflector 201. The reflecting point of the plano-concave reflector 201 is tilted and aligned with the center point position of the light spot of the reflector A 211. The reflecting point of the reflector A 211 is tilted and aligned with the center point position of the light spot of the diffraction grating 202. The reflecting point of the diffraction grating 202 is tilted and aligned with the center point position of the light spot of the reflector B 212. The reflecting point of the reflector B 212 is aligned with the center point position of the light spot of the reflector C 203. The reflecting point of the reflector C 203 is tilted and aligned with the center point position of the light spot of the half-reflector 213. The two reflecting surfaces of the half-reflector 213 are respectively tilted and aligned with the center point positions of the light spots of the reflector D 206 and the reflector E 207. The reflecting points of the reflector D 206 and the reflector 207 are respectively irradiated on the rear center light-receiving points of the reference colorimetric cell 204 and the sample colorimetric cell 209 through the light-transmitting ports 31 at both ends of the isolation plate. The front light-transmitting points of the reference colorimetric cell 204 and the sample colorimetric cell 209 are respectively aligned with the rear-end light-receiving ends of the two sets of sample detectors 2054 and 206. The outer ends of the plano-concave reflector 201, the reflector A 211, the reflector B 212, the reflector C 203, the reflector D 206, and the reflector E 207 are non-transparent structures. The diffraction grating 202 is a kind of grating. Through its regular structure, the amplitude or phase (or both) of the incident light is subjected to periodic spatial modulation. The most important application of the diffraction grating in optics is as a spectroscopic device; the half-reflector 213 is also called a semi-transmission mirror or a half-mirror, which is a special mirror that can reflect half of the incident light energy and transmit the other half, enabling the inner ends of the reflector D 206 and the reflector E 207 to receive and reflect light.

[0019] Figure 1 、 2As shown in the figure, this new type is based on the ultraviolet-visible spectrophotometer body 1. Before detection, the tester puts the reference cuvette 204 and the sample cuvette 209 into the detection sample (the sample is diluted with liquid) respectively. Then, open the housing monitoring upper cover 101 of the spectrophotometer body 1, and install the reference cuvette 204 and the sample cuvette 209 on the left and right sides respectively in the housing at the front end of the partition plate 3. After turning on the main power switch of the ultraviolet-visible spectrophotometer body 1, the light beam focused by the xenon light source 210 (with a condenser cover at the front end) is received by the plano-concave mirror 201 and focused and reflected to the mirror A 211. The mirror A 211 receives the focused light beam and reflects it to the diffraction grating 202. The diffraction grating 202 modulates the amplitude or phase (or both simultaneously) of the incident light by periodic spatial modulation, and after spectral splitting, it is focused and reflected to the mirror B 212. After the mirror B 212 receives the light and focuses it, the mirror C 203 obtains a single-wavelength light beam. Then, after passing through the half-reflecting mirror 213, the light beam is divided into two equal light beams. One light beam irradiates the light-receiving surface of the reference cuvette 204 through the mirror D 206, and the other light beam irradiates the light-receiving surface of the sample cuvette 209 through the mirror E 207. When the two spectral lines with specific wavelengths pass through the measured substances in the reference cuvette 204 and the sample cuvette 209 respectively, the substance will absorb part of the light energy, and the unabsorbed part of the light will continue to propagate through the substance. After the two sets of sample detectors 205 and 208 located at the front ends of the reference cuvette 204 and the sample cuvette 209 receive the optical signals, the two sets of sample detectors 205 and 208 can calculate the absorbance of the detected substances such as microorganisms in the solutions in the reference cuvette 204 and the sample cuvette 209 respectively by measuring the intensity difference between the incident light and the transmitted light, and then estimate the concentration or other related properties of the substances in the solutions in the reference cuvette 204 and the sample cuvette 209. Since the corresponding data of the liquid samples in the reference cuvette 204 and the sample cuvette 209 can be obtained simultaneously, the tester can compare the data of the two-way detections and accurately obtain the corresponding data of the detected samples (for example, the consistency of the two groups of data represents the accuracy of the detected data. On the contrary, if there is a difference in one of the two groups of detected data, it means that one of the light beams generated by the xenon lamp of the single spectrometer is affected by various factors (including temperature, non-levelness of the equipment, etc.), and there is a probability of diffraction, drift, and chromatic aberration of the light, which will lead to deviation in the test effect and cannot guarantee the accuracy of the detection data of the corresponding substances; in summary, the consistency of the data detected by the two sets of sample detectors 205 and 208 represents higher accuracy of the detected data), which provides favorable technical support for judging the accuracy of sample detection.

[0020] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present utility model.

[0021] In addition, it should be understood that although this specification is described according to the embodiments, the embodiments do not only include one independent technical solution. The narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new type of ultraviolet-visible spectrophotometer, comprising an ultraviolet-visible spectrophotometer body, a plano-concave reflector, reflector A, a diffraction grating, a reflector, reflector C, a semi-reflector, reflector D, and reflector E; characterized in that, The cuvettes and sample detectors of the ultraviolet-visible spectrophotometer body are in two sets. The two cuvettes are respectively used as a reference cuvette and a sample cuvette. The xenon lamp of the ultraviolet-visible spectrophotometer body is inclined and installed at the middle part of the rear end inside the housing of the ultraviolet-visible spectrophotometer body. The plano-concave mirror and mirror C are installed at the middle part of one side end inside the housing at an interval distance front and back. The mirror A and mirror B are installed at the middle part of the other side end inside the housing at an interval distance front and back. The mirror D and mirror E are respectively installed at the middle part of the front end inside the housing. The diffraction grating is installed at the middle part inside the housing and is located between the plano-concave mirror and mirror C. The semi-reflecting mirror is installed inside the housing between the mirror D and the mirror. The front side end housing of the mirror D and the mirror is provided with a partition board. Both side ends of the partition board are respectively provided with light-transmitting openings. The reference cuvette and the sample cuvette are distributed left and right and are respectively placed at the front end of the partition board. The two sets of sample detectors are respectively installed at the front side ends of the reference cuvette and the sample cuvette.

2. The novel ultraviolet-visible spectrophotometer according to claim 1, wherein The condensing point of the xenon lamp is inclined and aligned with the center point position of the light spot of the plano-concave mirror. The reflecting point of the plano-concave mirror is inclined and aligned with the center point position of the light spot of the mirror A. The reflecting point of the mirror A is inclined and aligned with the center point position of the light spot of the diffraction grating.

3. The novel ultraviolet-visible spectrophotometer according to claim 1, wherein The reflecting point of the diffraction grating is inclined and aligned with the center point position of the light spot of the mirror B. The reflecting point of the mirror B is aligned with the center point position of the light spot of the mirror C. The reflecting point of the mirror C is inclined and aligned with the center point position of the light spot of the semi-reflecting mirror.

4. The novel ultraviolet-visible spectrophotometer according to claim 1, wherein The two reflecting surfaces of the semi-reflecting mirror are respectively inclined and aligned with the center point positions of the light spots of the mirror D and the mirror E.

5. The novel ultraviolet-visible spectrophotometer according to claim 1, characterized in that, The reflecting points of the mirror D and the mirror E respectively irradiate the rear center light-receiving points of the reference cuvette and the sample cuvette through the light-transmitting openings at both side ends of the partition board. The front side light-transmitting points of the reference cuvette and the sample cuvette are respectively aligned with the rear side end light-receiving ends of the two sets of sample detectors.

6. The novel ultraviolet-visible spectrophotometer according to claim 1, characterized in that, The outer side ends of the plano-concave mirror, mirror A, mirror B, mirror C, mirror D, and mirror E are non-transparent structures.

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