Controllable illumination equipment adaptive to fluorescence spectrophotometer and fluorescence spectrophotometric measurement system

Abstract

The utility model is suitable for the technical field of measurement, and provides controllable illumination equipment matched with a fluorescence spectrophotometer and a fluorescence spectrophotometric measurement system. The equipment comprises a shell provided with a clamping part, and the clamping part is used for being clamped with a sample placement bin of the spectrophotometer, so that the shell and the spectrophotometer integrally form a closed shading environment for a sample to be detected; the light-emitting panel is embedded in the shell and is used for generating radiation light rays for irradiating the sample to be detected; the light shielding plate is movably connected with the shell and used for changing the area, exposed in the external environment, of the light-emitting panel so as to shield the light-emitting panel; and a control panel. According to the application, the to-be-tested sample is not interfered by the external environment in the catalysis or fluorescence excitation process, the packaging of the original sample placing bin does not need to be damaged, the to-be-tested substance is subjected to light source irradiation in a convenient manner, the in-situ spectrophotometric test is provided, and the measurement precision and the operation convenience of the substance fluorescence phenomenon are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measurement, and particularly relates to a controllable illumination device adapted to a fluorescence spectrophotometer and a fluorescence spectrophotometry measurement system. Background Technique

[0002] A fluorescence spectrophotometer is an instrument used to scan the fluorescence spectrum emitted by a fluorescent label. It can provide many physical parameters including excitation spectrum, emission spectrum, fluorescence intensity, quantum yield, fluorescence lifetime, fluorescence polarization, etc., and reflect the bonding and structure of molecules from various angles. By measuring these parameters, general quantitative analysis can be performed and the conformational changes of molecules in various environments can be inferred, thereby clarifying the relationship between molecular structure and function.

[0003] In the process of measuring the fluorescence of a substance using a fluorescence spectrophotometer, it is often necessary to irradiate the substance with a light source, and then move the substance into the fluorescence spectrophotometer to measure the fluorescence generated by the substance.

[0004] Taking the fluorescence test of a certain aggregation-induced emission material as an example, the existing test method is to irradiate the sample with an external light source for a certain period of time first, and then move it into the instrument for testing. During this process, in order to maintain a stable dark environment as much as possible, all environmental lighting needs to be turned off, and it takes a long time to transfer the sample to be tested; if other high-intensity lasers are used as the excitation light source, the sample chamber needs to be damaged and the light source needs to be introduced into the instrument.

[0005] Therefore, it can be seen that the existing fluorescence spectrophotometer is difficult to obtain accurate fluorescence measurement data of substances in an efficient and convenient manner, and a large number of manual operation processes are introduced during the measurement process, significantly affecting the repeatability of the measurement experiment and the accuracy of the measurement results. Summary of the Utility Model

[0006] The purpose of the embodiments of the present application is to provide a controllable illumination device adapted to a fluorescence spectrophotometer, aiming to solve the problem that the existing fluorescence measurement equipment or measurement method is difficult to obtain accurate fluorescence measurement data of substances in an efficient and convenient manner, and a large number of manual operation processes are introduced during the measurement process, significantly affecting the repeatability of the measurement experiment and the accuracy of the measurement results.

[0007] The embodiments of the present application are implemented as follows. A controllable illumination device adapted to a fluorescence spectrophotometer is provided, and the controllable illumination device includes:

[0008] The controllable illumination device includes:

[0009] A housing is provided with a clamping portion for clamping with the sample placement chamber of a spectrophotometer, so that the housing and the spectrophotometer together form a closed light-shielding environment for the sample to be measured;

[0010] A light-emitting panel is embedded in the housing and is used to generate radiation light for irradiating the sample to be measured;

[0011] A light-shielding plate is movably connected to the housing and is used to change the area of the light-emitting panel exposed to the external environment to shield the light-emitting panel;

[0012] And

[0013] A control panel is arranged on the surface of the housing. A number of control switches and a timer are arranged on the control panel. The control switches are used to control the lighting condition of the light-emitting panel, and the timer is used to control the lighting duration of the light-emitting panel.

[0014] Preferably, the control switches at least include a main switch, a light source switch and a grating control switch. The light source switch is used to control the on and off of the light-emitting panel, and the grating control switch is used to control the opening and closing state of the grating of the fluorescence spectrophotometer.

[0015] Preferably, one end of the light-shielding plate is provided with a rotating shaft. The light-shielding plate is rotatably connected to the housing through the rotating shaft. The timer is also used to control the deflection angle of the light-shielding plate relative to the housing to change the shielding degree of the light-shielding plate on the light-emitting panel.

[0016] Preferably, the controllable light irradiation device further includes an elastic member and an electromagnetic unit; one end of the elastic member is arranged on the light-shielding plate and the other end is connected to the housing; the electromagnetic unit is arranged on the housing; a magnetic member is also arranged on the light-shielding plate; the light source selection switch is also used to control the conduction condition of the electromagnetic unit; when the electromagnetic unit is not conductive, the light-shielding plate completely covers the light-emitting panel under the elastic force of the elastic member; when the electromagnetic unit is conductive, it provides a magnetic attraction force to the magnetic member, so that the light-shielding plate overcomes the elastic force of the elastic member and is located at a position where it does not cover the light-emitting panel at all.

[0017] Preferably, a control circuit is arranged inside the housing; the control circuit includes a processing unit, and a digital tube unit, a clock unit, an input reading unit and a light source driving unit connected to the processing unit; the input reading unit is connected to the control panel and is used to read the control information of the control panel, the light source driving unit is used to drive the light-emitting panel to emit light, and the digital tube unit is used to display the timing duration of the timer.

[0018] Preferably, the control circuit further includes an alarm unit, and the alarm unit includes a buzzer and a warning light; the buzzer is used to indicate the timing state of the timer, and the warning light is used to indicate the on / off state of the light-emitting unit.

[0019] Preferably, the light-emitting panel includes a plurality of light-emitting units; when there are two or more light-emitting units, the wavelengths of the radiation light emitted by each light-emitting unit are different, and the light source switch is further used to control the on / off states of the respective light-emitting units;

[0020] The light source switch includes a light intensity control key, a light time control key, and a light source type control key;

[0021] The light-emitting panel includes one or more of the following light sources: a laser light source, an LED light source, and a halogen light source.

[0022] Preferably, the light source driving unit is connected to a light-emitting unit D2 and a light-emitting unit D3, and the light source driving unit is further connected to a power supply VCC for improving the current output capacity of the light source driving unit; the clock unit includes: a quartz oscillator, a capacitor C1, and a capacitor C2. The first end of the capacitor C1 is grounded and connected to the first end of the capacitor C2. The second ends of the capacitor C1 and the capacitor C2 are respectively connected to both ends of the quartz oscillator, and the second ends of the capacitor C1 and the capacitor C2 are both connected to the processing unit.

[0023] Preferably, the control circuit further includes a first electromagnet and a second electromagnet; the alarm unit includes a resistor R1, a PNP-type triode Q1, a buzzer LS1, a light-emitting diode D1, and a resistor R2. The base of the triode Q1 is connected to the processing unit via the resistor R1. The collector of the triode Q1 is connected to the power supply VCC. The emitter of the triode is connected to the positive electrode of the light-emitting diode D1 via the resistor R2. One end of the buzzer is grounded, and the other end is connected to the emitter of the triode Q1. The negative electrode of the light-emitting diode D1 is grounded.

[0024] Another object of the embodiments of the present application is to provide a fluorescence spectrophotometry measurement system, and the system includes: a fluorescence spectrophotometer provided with a sample placement chamber for testing the fluorescence spectrum of a sample to be tested; and the controllable lighting device as described above, and the housing of the controllable lighting device is adapted to the inner wall shape of the sample placement chamber so that the controllable lighting device is embedded in the sample placement chamber of the fluorescence spectrophotometer.

[0025] A controllable light source device adapted to a fluorescence spectrophotometer provided by an embodiment of the present application can enable a sample to be measured to be free from the influence and interference of the external environment during the fluorescence excitation process, and there is no need to damage the original encapsulation of the sample placement chamber, so as to irradiate the substance to be measured with high light intensity in a convenient manner, which is beneficial to improving the measurement accuracy of the fluorescence situation of the substance and the convenience of experimental operation, and has broad market prospects. Brief Description of the Drawings

[0026] Figure 1 FIG. is an application scenario diagram of a controllable light source device adapted to a fluorescence spectrophotometer provided by an embodiment of the present application;

[0027] Figure 2 FIG. is a cross-sectional view of a controllable light source device provided by an embodiment of the present application;

[0028] Figure 3 FIG. is a schematic diagram of the connection relationship between a light-shielding plate and a housing provided by an embodiment of the present application;

[0029] Figure 4 FIG. is a circuit diagram of an internal control circuit of a controllable light source device provided by an embodiment of the present application.

[0030] Among them, 10, housing; 11, clamping part; 20, light-emitting panel; 30, light-shielding plate; 31, elastic member; 32, electromagnetic unit; 33, rotating shaft; 40, control panel; 41, control switch; 42, timer; 50, magnetic control unit. Detailed Description of the Embodiments

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] The following describes the specific implementation of the present application in detail with reference to specific embodiments.

[0033] As Figure 1 shown, FIG. is an application scenario diagram of a controllable light source device adapted to a fluorescence spectrophotometer provided by an embodiment of the present application, Figure 1 in which the right box on the right is a controllable light source device, and the device can be embedded in Figure 1 the hatch at the top of the sample chamber of the fluorescence spectrophotometer on the left.

[0034] As Figure 2 shown, a three-dimensional cross-sectional view of a controllable light source device adapted to a fluorescence spectrophotometer is provided. The controllable light source device includes:

[0035] The housing 10 is provided with a clamping portion 11 which is used for clamping with the sample placing chamber of the spectrophotometer, so that the housing 10 and the spectrophotometer as a whole form a sealed light-shielding environment for the sample to be measured; the light-emitting panel 20 is embedded in the housing 10 and is used for generating radiation light for irradiating the sample to be measured; the light-shielding plate 30 is movably connected with the housing 10 and is used for changing the area of the light-emitting panel 20 exposed to the external environment to shield the light-emitting panel 20; and the control panel 40 is arranged on the surface of the housing 10. A plurality of control switches 41 and a timer 42 are arranged on the control panel 40. The control switches 41 are used for controlling the light-emitting condition of the light-emitting panel 20, and the timer 42 can be used for controlling the light-emitting duration of the light-emitting panel 20.

[0036] In the embodiment of the present application, the housing 10 can be a box structure, such as a cubic box with a rectangular shape as a whole. The clamping portion 11 can be a clamping and sliding structure such as an embedded type, a splicing type, or a sliding rail type, and can be used for clamping, splicing or combining with other methods the controllable lighting device with the sample chamber opening of the spectrophotometer, so as to form a light-shielding environment inside the sample chamber of the spectrophotometer, so as to avoid the interference of external light on the inside.

[0037] For example, the clamping portion 11 can be two continuous and symmetric convex edge structures on both sides of the top of the rectangular housing. The convex edge structures on both sides of the housing 10 can enable the housing 10 to be clamped or suspended at the sample placing opening of the sample placing chamber of the spectrophotometer, and make the housing 10 and the spectrophotometer as a whole form a sealed environment for the sample to be measured, thereby preventing external light from irradiating into the sample chamber and affecting the accuracy of the measurement result.

[0038] In the embodiment of the present application, the light-emitting panel 20 can be an integral light-emitting plate formed by one or more light source types. It can also include a plurality of independent light source modules. Each light source module can include a type of light-emitting head, such as a laser light-emitting head, an LED light-emitting head, a halogen light-emitting head, etc. Each light-emitting head can emit a different type of light separately. These light-emitting heads can be replaced with each other in a plugging or embedding manner, and the required type of light-emitting head is connected to the housing to form the light-emitting panel. That is, the light-emitting panel can be composed of a single one, or a set of several adjacent or non-adjacent light-emitting units, which are used for emitting light beams, and the specific composition is not limited.

[0039] In an embodiment of the present application, the light shield 30 may not cover, partially cover, or completely cover the surface of the light-emitting panel 20, thereby blocking the light emitted by the light-emitting panel 20 from irradiating the sample to be tested, or blocking the light emitted by it from transmitting out of the housing 10. Since the light-emitting panel 20 itself may use a fluorescent substance to emit light, such as a fluorescent LED, when the power supply of the light-emitting panel 20 is cut off, its fluorescence characteristics will cause it to continue to generate fluorescence itself, which may interfere with the measurement of the fluorescence generated by the sample to be tested by the spectrophotometer. Therefore, in this case, the light-shielding panel 30 can move from not covering to completely covering the light-emitting panel 20 by means of rotation, sliding, etc., so that the light shield 30 and the housing 10 as a whole form a shield to completely shield the light-emitting panel 20 from light.

[0040] In this embodiment, controlling the light-emitting situation of the light-emitting panel 20 may refer to controlling the light-on and light-off areas, light-on and light-off intensities, light source types, etc. of the light-emitting panel 20, which is not limited here. The timer 42 can be an independent timing device. Preferably, while timing, it can also control the light-emitting duration of the light-emitting panel 20 and the state of the light shield. Preferably, when the timer 42 reaches the preset time, it controls to turn off the light-emitting panel 20, and at the same time controls and moves the position of the light shield 30 to block the light-emitting panel, so as to avoid the fluorescence generated by the light-emitting panel 20 after being turned off from interfering with the experiment.

[0041] As known to those skilled in the art, for the existing excitation spectrum and emission spectrum tests of fluorescent polymer solutions that need to use different photocatalytic conditions, when using strong light sources such as LEDs and halogen lamps for catalysis, a large experimental dark environment needs to be created and all the lights in the experimental environment need to be turned off; when using high-energy or other band laser light sources for excitation, it is necessary to damage the sample chamber to introduce the light source into the instrument. However, in an experimental environment with many other instruments, creating the entire dark environment will affect the normal use of other instruments, and the randomness of manual operation, multi-process operations such as sample transfer, etc. will all cause experimental errors. Therefore, a controllable light device adapted to a fluorescence spectrophotometer provided by an embodiment of the present application can enable, during the process of fluorescence excitation of a sample to be tested using strong light, without turning off all the environmental lights in the entire experimental environment, only need to place the sample in the spectrometer tester for fluorescence excitation, without being affected and interfered by the external environment, and without damaging the original package of the sample placement chamber, and perform high-intensity light irradiation on the substance to be tested in a convenient manner, which is beneficial to improving the measurement accuracy of the fluorescence situation of the substance and the convenience of experimental operation, and has a broad market prospect.

[0042] As a preferred embodiment of the present application, the control switch 41 at least includes a main switch, a light source switch, and a grating control switch 41. The light source selection switch is used to control the light source type of the light-emitting panel, and the grating control switch 41 is used to control the opening and closing state of the spectrophotometer grating.

[0043] In the embodiments of the present application, the light source switch may be a switch combination formed by one or several switches, and can be used to control the on / off state of one type or multiple types of light sources, such as halogen light sources, LED light sources, laser light sources, etc. Since permanent magnets are generally provided on the doors of the sample placement chambers of general spectrophotometers, when the door is closed, the inductor on the spectrophotometer detects the magnetism of the permanent magnet and considers the door to be completely closed, and then the grating will be automatically opened. In this embodiment, the grating control switch designed on the controllable lighting device can control the opening and closing of the grating protection door on the spectrophotometer. The implementation method can be: using forms such as spring contact switches and magnetic induction switches to simulate the presence or absence of the permanent magnet on the door, and cooperating with the mechanism inside the spectrophotometer that controls the grating door to achieve the control of the opening and closing state of the spectrophotometer grating. The spectrophotometer grating is used to protect the optical measurement components inside the spectrophotometer from the influence of external strong light. Preferably, the grating control switch and the control switch of the light emitting panel have a logical control relationship. Only when the light emitting panel is closed can the grating control switch control the opening of the spectrophotometer grating, that is, to avoid the light emitting panel from affecting the optical measurement components inside the spectrophotometer.

[0044] In one embodiment, the grating control switch may be a mechanical movable magnetic disk knob or an electromagnetic switch, etc. For example, as an electromagnetic switch, by controlling Figure 2 the magnetic control unit 50 therein, to simulate the permanent magnet inside the spectrophotometer chamber door and control the opening and closing state of the grating protection door on the spectrophotometer, and its specific structure is not limited. Preferably, the grating control switch is the on / off control end of an electromagnet. When it is turned on, the grating protection door on the spectrophotometer is opened.

[0045] As Figure 3 shown, as a preferred embodiment of the present application, one end of the light shielding plate 30 is provided with a rotating shaft 33. The light shielding plate 30 is rotationally connected to the housing through the rotating shaft 33. The timer 42 is further used to control the deflection angle of the light shielding plate 30 relative to the housing 10 to change the shielding degree of the light shielding plate 30 on the light emitting panel 20.

[0046] In the embodiments of the present application, one end of the light shielding plate 30 is provided with a rotating shaft 333 and can rotate around the rotating shaft 3. Its rotation angle can be controlled by the timer 42. For example, when the timing of the timer 42 ends, the light shielding plate 30 automatically shields the light source.

[0047] In one embodiment, the rotation of the light shield 30 and the light emission of the light emitting panel 20 are under the interlock control of the timer 42. When the timer 42 starts timing, the light emitting panel 20 starts to emit light. At this time, the light shield 30 is located at or rotated to a position where it does not shield the light emitting panel 20, and the light emitted by the light emitting panel 20 can fully irradiate the sample to be tested. When the timer 42 reaches the preset time, the light emitting panel 20 stops emitting light. At this time, the light shield 30 rotates to a position where it completely shields the light emitting panel 20, preventing fluorescence, glow, etc. generated by the light emitting panel 20 when it is not powered on from irradiating the sample to be tested and interfering with the test results.

[0048] As Figure 3 shown, as a preferred embodiment of the present application, the controllable lighting device further includes an elastic member 31 and an electromagnetic unit 32; one end of the elastic member 31 is provided on the light shield 30, and the other end is connected to the housing 10; the electromagnetic unit 32 is provided on the housing 10; a magnetic member is further provided on the light shield 20; the light source selection switch is further used to control the conduction of the electromagnetic unit 32; when the electromagnetic unit 32 is not conducting, the light shield 30 completely covers the light emitting panel 20 under the elastic force of the elastic member 31; when the electromagnetic unit 32 is conducting, it provides a magnetic attraction force to the magnetic member 31, so that the light shield 30 overcomes the elastic force of the elastic member 31 and is located at a position where it completely does not cover the light emitting panel 20. The magneto-control unit 50 is a grating control switch, which controls the grating to be in the closed state when the lighting device is turned on to prevent irreversible damage to the detector.

[0049] In the embodiment of the present application, the light shield 20 may include a magnetic member, such as an iron sheet. The magnetic member is arranged corresponding to the electromagnetic unit 32. When the electromagnetic unit 32 is conducting, it can attract the magnetic member, thereby driving the movement of the light shield 30. The electromagnetic unit 32 can be located outside the housing 10 or can be provided inside the housing 10.

[0050] As Figure 4 shown, as a preferred embodiment of the present application, a control circuit is provided inside the housing 10; the control circuit includes a processing unit, and a digital tube unit, a clock unit, an input reading unit, and a light source driving unit connected to the processing unit; the input reading unit is connected to the control panel for reading the control information of the control panel, the light source driving unit is used to drive the light emitting panel to emit light, and the digital tube unit is used to display the timing duration of the timer 42.

[0051] In the embodiment of the present application, a circuit can be used to control the operation of each component in the controllable lighting device, thereby reducing the production cost of the device and improving the operation convenience. The processing unit can be controlled by a single-chip microcomputer such as STM32. Figure 4The circuit shown may include more or fewer components such as capacitors, resistors, etc., which will not be listed in full here. The driving module 1 and the driving module 2 provided therein are used to improve the ability to output current. It can be understood that this device may also include a power input terminal, and the power supply can be input in direct current or alternating current. Correspondingly, the device may also include a voltage transformation or rectification and filtering unit, etc., which will not be listed in full here. The two electromagnets can respectively represent the electromagnetic unit 32 and the magnetic control unit 50, and can be controlled separately through keys. The keyboard may include more or fewer keys, and each component is controlled through a built-in program. The control switch 41 can be the keys S1 to S5.

[0052] As Figure 4 shown, as a preferred embodiment of this application, the control circuit further includes an alarm unit, and the alarm unit includes a buzzer LS1 and a warning light LED1; the buzzer is used to indicate the timing state of the timer 42, and the indicator light is used to indicate the on and off status of the light emitting unit.

[0053] In the embodiment of this application, the alarm unit can play corresponding sound and light prompts after the timer ends or a specific lighting is started or ended.

[0054] As a preferred embodiment of this application, the light emitting panel includes a plurality of light emitting units; when there are two or more light emitting units, the wavelengths of the radiation light emitted by each light emitting unit are different, and the light source switch is also used to control the on and off status of each light emitting unit;

[0055] The light source switch includes a light intensity control key, a light time control key, and a light source type control key;

[0056] The light emitting panel includes one or more of the following light sources: laser light source, LED light source, and halogen light source.

[0057] In the embodiment of this application, the above various switches can be Figure 4 one or a combination of S1, S2, S3, S4, S5 in . Multiple different types of light emitters can be set on the light emitting panel at the same time.

[0058] As a preferred embodiment of this application, the light source driving unit is connected to the light emitting unit D2 and the light emitting unit D3, and the light source driving unit is also connected to the power supply VCC to improve the current output ability of the light source driving unit; the clock unit includes: a quartz oscillator Y1, a capacitor C1, and a capacitor C2. The first end of the capacitor C1 is grounded and connected to the first end of the capacitor C2. The second end of the capacitor C1 and the second end of the capacitor C2 are respectively connected to both ends of the quartz oscillator, and the second end of the capacitor C1 and the second end of the capacitor C2 are both connected to the processing unit.

[0059] In the embodiments of the present application, Figure 4 the driving module 2 in can be the above-mentioned light source driving unit, which is used to improve the driving ability for high-power light sources. This unit can also include more or fewer multiple types of light sources. Here, only D2 and D3 are taken as examples.

[0060] As a preferred embodiment of the present application, the control circuit further includes a first electromagnet and a second electromagnet; the alarm unit includes a resistor R1, a PNP-type triode Q1, a buzzer LS1, a light-emitting diode D1, and a resistor R2. The base of the triode Q1 is connected to the processing unit through the resistor R1. The collector of the triode Q1 is connected to the power supply VCC. The emitter of the triode is connected to the positive electrode of the light-emitting diode D1 through the resistor R2. One end of the buzzer is grounded, and the other end is connected to the emitter of the triode Q1. The negative electrode of the light-emitting diode D1 is grounded.

[0061] In the embodiments of the present application, the first electromagnet and the second electromagnet can be controlled by one or more of the switches S1 to S5. The electromagnetic unit 32 can be controlled by a timer timing key or a separate electromagnetic unit control switch.

[0062] In an embodiment of the present application, a fluorescence spectrophotometry measurement system is further provided. The system includes: a fluorescence spectrophotometer provided with a sample placement chamber for testing the fluorescence spectrum of a sample to be tested; and the controllable lighting device as described above. The housing of the controllable lighting device is adapted to the inner wall shape of the sample placement chamber so that the controllable lighting device is embedded in the sample placement chamber of the fluorescence spectrophotometer.

[0063] In the embodiments of the present application, the fluorescence spectrophotometry measurement system includes two components, namely a fluorescence spectrophotometer and a controllable lighting device. For example, the fluorescence spectrophotometer can adopt the Edinburgh FS5 model. The controllable lighting device can be perfectly nested inside the sample chamber of the fluorescence spectrophotometer to isolate external light sources. The dark environment of the original sample chamber of the device is used to eliminate experimental errors caused by ambient light. Through this device, timed, qualitative, and quantitative photocatalysis experiments can be carried out on the sample in the sample chamber.

[0064] Through a fluorescence spectrophotometry measurement system adapted to a fluorescence spectrophotometer provided by the embodiments of the present application, during the process of catalyzing a sample to be tested with strong light, it is not necessary to turn off all the ambient lights in the entire experimental environment. Only the sample needs to be placed in the spectrometer tester for catalysis, without being affected or interfered by the external environment, and without damaging the original package of the sample chamber. The sample to be tested can be irradiated with high light intensity in a convenient manner, which is beneficial to improving the measurement accuracy of the fluorescence situation of the substance and the convenience of experimental operation, and has broad market prospects.

[0065] As used herein, "coupled" or "connected" may mean that two or more elements are in direct physical or electrical contact with each other, or are in indirect physical or electrical contact with each other, and may also mean that two or more elements operate or act on each other. The term "circuit" generally refers to an object composed of one or more transistors and / or one or more active and passive elements connected in a certain manner to process signals.

[0066] However, those skilled in the art should understand that the same element may be referred to by different names. This application does not use the difference in names as a way to distinguish elements, but uses the difference in the functions of elements as the basis for distinction.

[0067] In addition, the embodiments of this application cover the features of multiple specific embodiments and the method steps and their sequences for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences. Unless otherwise defined in this specification, the meanings of the scientific and technical terms used herein are the same as those understood and commonly used by those skilled in the art to which this application belongs. In addition, in the case of not conflicting with the context, the singular nouns used in this specification cover the plural forms of the nouns; and when the plural nouns are used, they also cover the singular forms of the nouns.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A controllable light source device adapted to a fluorescence spectrophotometer, characterized in that, The controllable lighting device includes: A housing provided with a clamping portion for clamping with the sample placement chamber of a spectrophotometer, so that the housing and the spectrophotometer together form a closed light-shielding environment for the sample to be measured; A light-emitting panel embedded in the housing for generating radiation light for irradiating the sample to be measured; A light-shielding plate movably connected to the housing for changing the area of the light-emitting panel exposed to the external environment to shield the light-emitting panel; And A control panel provided on the surface of the housing. The control panel is provided with a number of control switches and a timer. The control switches are used to control the lighting condition of the light-emitting panel, and the timer is used to control the lighting duration of the light-emitting panel.

2. The controllable light source device adapted to a fluorescence spectrophotometer according to claim 1, characterized in that, The control switches at least include a main switch, a light source switch, and a grating control switch. The light source switch is used to control the on and off of the light-emitting panel, and the grating control switch is used to control the opening and closing state of the grating of the fluorescence spectrophotometer.

3. The controllable light illumination device adapted to a fluorescence spectrophotometer according to claim 1, wherein One end of the light-shielding plate is provided with a rotating shaft, and the light-shielding plate is rotatably connected to the housing through the rotating shaft. The timer is also used to control the deflection angle of the light-shielding plate relative to the housing to change the shielding degree of the light-emitting panel by the light-shielding plate.

4. The controllable light source device adapted to a fluorescence spectrophotometer according to claim 1, wherein, The controllable lighting device further includes an elastic member and an electromagnetic unit; One end of the elastic member is provided on the light-shielding plate, and the other end is connected to the housing; the electromagnetic unit is provided on the housing; a magnetic member is also provided on the light-shielding plate; The light source selection switch is also used to control the conduction condition of the electromagnetic unit; when the electromagnetic unit is not conducting, the light-shielding plate completely covers the light-emitting panel under the elastic force of the elastic member; when the electromagnetic unit is conducting, it provides a magnetic attraction force to the magnetic member, so that the light-shielding plate overcomes the elastic force of the elastic member and is located at a position where it completely does not cover the light-emitting panel.

5. The controllable light source device adapted to a fluorescence spectrophotometer according to claim 1, wherein, A control circuit is provided inside the housing; The control circuit includes a processing unit, and a digital tube unit, a clock unit, an input reading unit, and a light source driving unit connected to the processing unit; The input reading unit is connected to the control panel for reading the control information of the control panel. The light source driving unit is used to drive the light-emitting panel to emit light, and the digital tube unit is used to display the timing duration of the timer.

6. The controllable light source device adapted to a fluorescence spectrophotometer according to claim 5, wherein, The control circuit further includes an alarm unit, and the alarm unit includes a buzzer and a warning light; The buzzer is used to indicate the timing state of the timer, and the indicator light is used to indicate the on and off condition of the light-emitting unit.

7. The controllable light irradiation device adapted to a fluorescence spectrophotometer according to claim 5, characterized in that, The light-emitting panel includes a number of light-emitting units; when there are two or more light-emitting units, the wavelengths of the radiation light emitted by each light-emitting unit are different, and the light source switch is also used to control the on and off condition of each light-emitting unit; The light source switch includes a light intensity control key, a light time control key, and a light source type control key; The light-emitting panel includes one or more of the following light sources: laser light source, LED light source, and halogen light source.

8. The controllable light irradiation device adapted to a fluorescence spectrophotometer according to claim 5, characterized in that, The light source driving unit is connected to a light emitting unit D2 and a light emitting unit D3, and the light source driving unit is further connected to a power supply VCC for improving the current output capacity of the light source driving unit; The clock unit includes: a quartz oscillator, a capacitor C1, and a capacitor C2. The first end of the capacitor C1 is grounded and connected to the first end of the capacitor C2. The second ends of the capacitor C1 and the capacitor C2 are respectively connected to both ends of the quartz oscillator. The second end of the capacitor C1 and the second end of the capacitor C2 are both connected to the processing unit.

9. The controllable light illumination device adapted to a fluorescence spectrophotometer according to claim 6, characterized in that, The control circuit further includes a first electromagnet and a second electromagnet; the alarm unit includes a resistor R1, a PNP type triode Q1, a buzzer LS1, a light emitting diode D1, and a resistor R2. The base of the triode Q1 is connected to the processing unit via the resistor R1. The collector of the triode Q1 is connected to the power supply VCC. The emitter of the triode is connected to the positive electrode of the light emitting diode D1 via the resistor R2. One end of the buzzer is grounded, and the other end is connected to the emitter of the triode Q1. The negative electrode of the light emitting diode D1 is grounded.

10. A fluorescence spectrophotometric measurement system, characterized in that, The system includes: A fluorescence spectrophotometer provided with a sample placement chamber for testing the fluorescence spectrum of a sample to be tested; and The controllable lighting device according to any one of claims 1 to 9, wherein the housing of the controllable lighting device is adapted to the inner wall shape of the sample placement chamber so that the controllable lighting device is embedded in the sample placement chamber of the fluorescence spectrophotometer.

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