Automatic monochromator assembly

Abstract

The utility model discloses an automatic monochromator assembly, which relates to the technical field of monochromators and comprises a lamp chamber, a tungsten lamp is arranged in the lamp chamber, a first slit sheet is arranged at the front end of the lamp chamber, and a monochromator box is arranged at the rear end of the lamp chamber. A grating is arranged in the monochromator box body, an automatic adjusting mechanism used for controlling the angle of the grating is arranged in the monochromator box body, a first servo motor is arranged at the bottom end of the monochromator box body, and the output end of the first servo motor is connected with the bottom end of the grating. According to the automatic monochromator assembly, a light source enters the interior of the monochromator box through the first slit piece, light is refracted through mutual cooperation of the reflector and the collimating mirror, then the output end of the first servo motor drives the grating to rotate, and the angle of the grating is adjusted; therefore, the composite light is dispersed into monochromatic light through mutual cooperation of the grating and the filter disc, and finally the monochromatic light is output through the second slit piece.

Description

Technical Field

[0001] This utility model relates to the field of monochromator technology, specifically to an automatic monochromator assembly. Background Technology

[0002] A monochromator is a device that separates light emitted from a light source into the desired monochromatic light. It has wide applications in fields such as spectral analysis and optical measurement. However, traditional monochromator components are prone to errors during operation due to their complex wavelength mechanisms, long assembly and debugging times, and the need for specialized skills.

[0003] To overcome the above-mentioned defects, the prior art (Chinese patent with announcement number CN102346069B, announcement date 2013-12-25) provides an ultraviolet-visible detector monochromator, which includes a lamp box, a lens, a slit seat, a filter disc device, a grating device, a beam splitter, and a reflector. The lamp box is a horizontal lamp box, and the deuterium lamp and tungsten lamp are installed inside the lamp box, located near the front panel of the monochromator housing. The filter disc device includes a filter disc and a drive motor connected to the filter disc and driving the filter disc to rotate. The filter disc has an empty light-passing hole and a light-passing hole on which holmium glass is placed. In the UV-Vis detector monochromator, because the lamp box is horizontal, when the tungsten lamp needs to be replaced, simply open the front panel and front sheet metal door of the monochromator to remove the tungsten lamp directly; when replacing the deuterium lamp, simply unscrew the two screws on the deuterium lamp to pull it out, achieving a simple and convenient lamp replacement operation; in addition, a light-transmitting hole is provided on the filter disc to place the holmium glass, through which the wavelength calibration of the monochromator can be performed.

[0004] The aforementioned mechanism enables quick replacement of lamps by using bolts to work together. However, in actual use, the existing wavelength components are quite complex, resulting in a complicated overall operation process when performing monochromatic light separation, which affects the efficiency of monochromatic light separation. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic monochromator assembly to solve the problems mentioned in the background art, such as the complexity of traditional wavelength mechanisms, long assembly and debugging time, and the need for professional skills, which make the monochromator prone to errors during operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic monochromator assembly, including a lamp chamber, a tungsten lamp disposed inside the lamp chamber, a first slit plate disposed at the front end of the lamp chamber, and a monochromator housing disposed at the rear end of the lamp chamber; a grating is disposed inside the monochromator housing, and an automatic adjustment mechanism for controlling the angle of the grating is disposed inside the monochromator housing, and a first servo motor is disposed at the bottom end of the monochromator housing and the output end of the first servo motor is connected to the bottom end of the grating; a terminal block is disposed at the top end of the lamp chamber, and a focusing mechanism for focusing parallel monochromatic light is disposed inside the lamp chamber.

[0007] Furthermore, a collimating lens is provided on the right side of the monochromator housing, and a filter disc is provided on the left side of the monochromator housing. An optical coupler is provided on the right side of the grating. The optical coupler inside the monochromator can provide electrical isolation between the input and output. Electrical isolation can ensure the independence between circuits and prevent mutual interference caused by circuit failure or interference.

[0008] Furthermore, a Hall plate is disposed above the filter disc, a second slit is disposed on the left side of the monochromator housing, and a reflector is disposed on the left side of the grating.

[0009] Furthermore, the position of the second slit corresponds to the position of the filter disc, and a reflector is provided on the right side of the first slit, and the reflector is located inside the monochromator housing.

[0010] Furthermore, the grating is disposed at the front end of the filter disc, and the positions of the grating and the collimating lens correspond to each other.

[0011] Furthermore, a second servo motor is provided at the rear end of the monochromator housing, and the output end of the second servo motor is connected to the filter disc.

[0012] Furthermore, the focusing mechanism includes an objective lens, which is located on the left side inside the lamp chamber, and the positions of the objective lens and the first slit plate correspond to each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The light source enters the interior of the monochromator chamber through the first slit. The light is refracted by the interaction of the reflector and the collimator. Then, the output of the first servo motor drives the grating to rotate and adjust the angle of the grating. This allows the composite light to be dispersed into monochromatic light by the interaction of the grating and the filter disc. Finally, the light is output through the second slit.

[0015] Furthermore, when light passes through the grating, its direction changes, and it is transmitted to different diffraction directions. This allows the monochromator to efficiently utilize the light energy emitted by the tungsten lamp, improving the instrument's measurement accuracy and stability.

[0016] Furthermore, optocouplers can provide electrical isolation between the input and output within a monochromator. This electrical isolation ensures the independence of the circuits and prevents mutual interference caused by circuit faults or disturbances.

[0017] 2. A filter disc can transmit light of a specific wavelength while absorbing or reflecting light of other wavelengths. In this way, when composite light passes through the filter disc, only light that matches the wavelength transmitted by the filter disc can pass through, making it easier for the desired monochromatic light to pass through smoothly.

[0018] Furthermore, the main function of the objective lens is to focus the parallel monochromatic light from the dispersive element onto the first slit. By adjusting the position and focal length of the objective lens, it can be ensured that the monochromatic light of the required wavelength can be accurately focused onto the first slit, thereby outputting high-quality monochromatic light. Attached Figure Description

[0019] Figure 1 This is a side view of the structure of this utility model.

[0020] Figure 2 This is a front view structural diagram of the present utility model.

[0021] Figure 3 This is a schematic diagram of the connection structure between the filter disc and the collimating lens of this utility model.

[0022] Figure 4 This is a schematic diagram of the connection structure between the filter disc and the Hall plate of this utility model.

[0023] Figure 5 This is a side sectional view of the present invention.

[0024] Figure 6 This is a schematic diagram of the connection structure between the tungsten lamp and the objective lens of this utility model.

[0025] In the diagram: 1. Lamp chamber; 2. Tungsten lamp; 3. First slit; 4. Terminal block; 5. Objective lens; 6. Monochromator housing; 7. Collimating lens; 8. First servo motor; 9. Grating; 10. Optical coupler; 11. Filter disc; 12. Reflector; 13. Second slit; 14. Second servo motor; 15. Hall plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: As Figure 1 , Figure 2 and Figure 3 The technical solution presented addresses the problems of traditional wavelength mechanisms being complex, time-consuming to assemble and debug, and requiring specialized skills, which can lead to errors during monochromator operation. This automatic monochromator assembly discloses an automatic adjustment mechanism, including a lamp chamber 1 containing a tungsten lamp 2. A first slit 3 is positioned at the front end of the lamp chamber 1, and a monochromator housing 6 is positioned at the rear end. A grating 9 is housed inside the monochromator housing 6, and an automatic adjustment mechanism for controlling the angle of the grating 9 is also provided inside the monochromator housing 6. A first servo motor 8 is located at the bottom of the monochromator housing 6, and the output end of the first servo motor 8... Connected to the bottom of the grating 9, a collimating lens 7 is arranged on the right side inside the monochromator housing 6, and a filter disc 11 is arranged on the left side inside the monochromator housing 6. An optical coupler 10 is arranged on the right side of the grating 9, and a Hall plate 15 is arranged above the filter disc 11. A second slit 13 is arranged on the left side of the monochromator housing 6, and a reflector 12 is arranged on the left side of the grating 9. The position of the second slit 13 corresponds to the position of the filter disc 11. A reflector 12 is arranged on the right side of the first slit 3, and the reflector 12 is arranged inside the monochromator housing 6. The grating 9 is arranged at the front end of the filter disc 11, and the positions of the grating 9 and the collimating lens 7 correspond to each other.

[0028] In this example, a tungsten lamp 2 provides the light source, which enters the monochromator housing 6 through the first slit 3. The light is refracted by the interaction of the reflector 12 and the collimating lens 7. Then, the output of the first servo motor 8 drives the grating 9 to rotate and adjust its angle. This allows the composite light to be dispersed into monochromatic light through the interaction of the grating 9 and the filter disc 11, and finally output through the second slit 13. The first servo motor 8 can flexibly adjust the specific angle of the grating 9, enabling it to better decompose the composite light into monochromatic light arranged in wavelength order. When light passes through the grating 9, its direction changes, and it is transmitted to different diffraction directions. The monochromator can efficiently utilize the light energy emitted by the tungsten lamp 2, improving the measurement accuracy and stability of the instrument. The optocoupler 10 inside the monochromator can provide electrical isolation between the input and output. Electrical isolation can ensure the independence between circuits and prevent mutual influence caused by circuit failure or interference. When a circuit part in the monochromator is interfered with by high voltage or strong current, the optocoupler 10 can isolate these interference signals and protect other circuit parts from being affected. During use, the Hall plate 15 can monitor the position or movement state of the filter disc 11 and the grating 9, so that the angles of the filter disc 11 and the grating 9 can be adjusted and changed more flexibly. The Hall plate 15 can achieve this function by sensing changes in the magnetic field.

[0029] Example 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The technical solution shown is designed to address the problem that the optical path may not be able to pass smoothly through the filter disc 11 during use: the automatic monochromator assembly discloses a second servo motor 14, which is provided at the rear end of the monochromator housing 6, and the output end of the second servo motor 14 is connected to the filter disc 11.

[0030] In this example, the second servo motor 14 can drive the filter disc 11 to rotate. When in use, the filter disc 11 can transmit light of a specific wavelength while absorbing or reflecting light of other wavelengths. In this way, when composite light passes through the filter disc 11, only light that matches the transmission wavelength of the filter disc 11 can pass through, which makes it easier for the required monochromatic light to pass through smoothly.

[0031] Example 3: Figure 1 , Figure 2 , Figure 5 and Figure 6The technical solution shown is designed to address the problem that some composite light cannot be focused and output: the automatic monochromator assembly discloses a focusing mechanism, which includes an objective lens 5, and the objective lens 5 is located on the left side inside the lamp chamber 1. The positions of the objective lens 5 and the first slit 3 correspond to each other.

[0032] In this example, the main function of objective lens 5 in the monochromator is to focus the parallel monochromatic light from the dispersive element onto the first slit 3. By adjusting the position and focal length of objective lens 5, it can be ensured that the monochromatic light of the required wavelength can be accurately focused onto the first slit 3, thereby outputting high-quality monochromatic light.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic monochromator assembly, comprising a lamp chamber (1), wherein a tungsten lamp (2) is disposed inside the lamp chamber (1), a first slit plate (3) is disposed at the front end of the lamp chamber (1), and a monochromator housing (6) is disposed at the rear end of the lamp chamber (1). Its features are: The monochromator housing (6) is provided with a grating (9) inside, and the monochromator housing (6) is provided with an automatic adjustment mechanism for controlling the angle of the grating (9) inside. The automatic adjustment mechanism includes a first servo motor (8), and the first servo motor (8) is located at the bottom of the monochromator housing (6) and the output end of the first servo motor (8) is connected to the bottom of the grating (9). The top of the lamp chamber (1) is provided with a terminal block (4), and the interior of the lamp chamber (1) is provided with a focusing mechanism for focusing parallel monochromatic light.

2. An automatic monochromator assembly according to claim 1, characterized in that: A collimating lens (7) is provided on the right side inside the monochromator housing (6), and a filter disc (11) is provided on the left side inside the monochromator housing (6). An optical coupler (10) is provided on the right side of the grating (9).

3. An automatic monochromator assembly according to claim 2, characterized in that: A Hall plate (15) is provided above the filter disc (11), a second slit plate (13) is provided on the left side of the monochromator housing (6), and a reflector (12) is provided on the left side of the grating (9).

4. An automatic monochromator assembly according to claim 3, characterized in that: The position of the second slit (13) corresponds to the position of the filter disc (11). A reflector (12) is provided on the right side of the first slit (3), and the reflector (12) is located inside the monochromator housing (6).

5. An automatic monochromator assembly according to claim 4, characterized in that: The grating (9) is located at the front end of the filter disc (11), and the positions of the grating (9) and the collimating lens (7) correspond to each other.

6. An automatic monochromator assembly according to claim 5, characterized in that: The rear end of the monochromator housing (6) is provided with a second servo motor (14), and the output end of the second servo motor (14) is connected to the filter disc (11).

7. An automatic monochromator assembly according to claim 1, characterized in that: The focusing mechanism includes an objective lens (5), which is located on the left side inside the lamp chamber (1). The objective lens (5) and the first slit plate (3) are positioned in opposite directions.

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