CN212111287U

CN212111287U - Light-gathering module, light source assembly and liquid phase detector

Info

Publication number: CN212111287U
Application number: CN202020832429.8U
Authority: CN
Inventors: 张振方; 罗阁; 宋瑶; 程子健
Original assignee: Shandong Wukong Instrument Co ltd
Current assignee: Wukong Scientific Instrument (Shanghai) Co.,Ltd.
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-12-08
Anticipated expiration: 2030-05-18

Abstract

The utility model provides a light-focusing module, a light source assembly and a liquid phase detector, which relate to the technical field of liquid phase detection, wherein the light-focusing module comprises a base, a semi-transparent and semi-reflective mirror and a focusing lens; the base comprises a first accommodating space and a light through hole which is communicated with the first accommodating space and enables mercury lamp light beams to enter; the semi-transparent semi-reflecting mirror and the focusing lens are both arranged on the base, and the light through hole is positioned between the semi-transparent semi-reflecting mirror and the focusing lens; the semi-transmitting and semi-reflecting mirror can couple the tungsten lamp light beam and the mercury lamp light beam, and the coupled light beam is converged on the focusing lens through the first accommodating space. The light source assembly comprises a light-gathering module. The liquid phase detector includes a light source assembly. Through the light-gathering module, the technical problem that the volume of a detector is large due to the coupling of a deuterium lamp, a tungsten lamp and a mercury lamp in the prior art is solved.

Description

Light-gathering module, light source assembly and liquid phase detector

Technical Field

The utility model belongs to the technical field of the liquid phase detects technique and specifically relates to a spotlight module, light source subassembly and liquid phase detection ware are related to.

Background

The detector belongs to a core module component of a high performance liquid chromatograph and is responsible for quickly and accurately detecting each component separated from the chromatographic column to realize qualitative and quantitative analysis. The most common of liquid phase detectors are ultraviolet-visible absorption detectors (UVD) and Diode Array Detectors (DAD). Both types of detectors typically use deuterium and tungsten lamps as light sources, providing a range of wavelengths of ultraviolet and visible light.

In the ultraviolet-visible absorption detector, light emitted by a light source module is split by a grating, light with specified wavelength enters a flow cell sample to be absorbed, and is finally focused on a sensor to be detected, so that photoelectric conversion is realized, and a processing circuit analyzes and processes an electric signal to obtain a waveform or a parameter required by a user. In the diode array detector, light emitted by a light source module is converged and then passes through a detected mobile phase (liquid) in a flow cell, and then the passed light is reflected to a grating to be divided into different wave bands; the sensor detects light of various wave bands, photoelectric conversion is achieved, electric signals are obtained, the processing circuit analyzes and processes the electric signals, and waveforms or parameters needed by a user are obtained.

In the prior art, the detector generally uses deuterium and tungsten lamps as light sources, but cannot be calibrated. Mercury lamps cover the characteristic wavelengths from the ultraviolet to the visible region and are generally used as calibration light sources for wavelength positioning of detectors, so that the detectors can use three of deuterium lamps, tungsten lamps and mercury lamps as light sources, but the conventional detectors using three coupled light sources have a large volume.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spotlight module, light source subassembly and liquid phase detector to alleviate deuterium lamp, tungsten lamp and the mercury lamp three coupling that exists among the prior art, make the great technical problem of volume of detector.

In a first aspect, the present invention provides a light focusing module, including: the device comprises a base, a half-transmitting half-reflecting mirror and a focusing lens.

The base comprises a first accommodating space and a light through hole which is communicated with the first accommodating space and enables mercury lamp light beams to enter; the semi-transparent semi-reflecting mirror and the focusing lens are both arranged on the base, and the light through hole is formed between the semi-transparent semi-reflecting mirror and the focusing lens.

The semi-transmitting semi-reflecting mirror can couple tungsten lamp beams and mercury lamp beams, and the coupled beams are converged on the focusing lens through the first accommodating space.

Further, the half mirror inclines to set up, the half mirror includes relative near end face and the distal end face that sets up, near end face is close to focusing lens, the distal end face is kept away from focusing lens.

The near end face and the central line of the focusing lens are arranged at an included angle, the near end face is used for reflecting mercury lamp beams, and the far end face is used for transmitting tungsten lamp beams.

Further, an included angle between the semi-transparent semi-reflecting mirror and the central line of the focusing lens is 45 degrees.

Further, the base is provided with a first end face, a second end face and a side face connected between the first end face and the second end face.

The first end face is an inclined plane, and the semi-transparent semi-reflecting mirror is fixedly connected to the inclined plane.

The focusing lens is arranged in the first accommodating space and is close to the second end face.

The light through hole is formed in the side face.

Further, the second end surface of the base is formed with a first concave land and a second concave land axially inward, and the diameter of the first concave land is larger than that of the second concave land.

The pressing ring is inserted into the first concave station and used for pressing the focusing lens so that the focusing lens is clamped in the second concave station.

Furthermore, the surface of the pressing ring, which is in contact with the focusing lens, is an arc surface, and the arc surface is matched with the outer surface of the focusing lens.

Has the advantages that:

the utility model provides a spotlight module, semi-transparent semi-reflecting mirror and focusing lens all install in the base, and the clear aperture is located semi-transparent semi-reflecting mirror and focusing lens, when specifically using, through laying mercury lamp and tungsten lamp, can make semi-transparent semi-reflecting mirror coupling tungsten lamp light beam and mercury lamp light beam, the coupling light beam assembles in focusing lens through first accommodation space; compared with the prior art, the half-transmitting and half-reflecting mirror can form the coupled light beam, the focusing lens can focus the coupled light beam and output the coupled light beam, and the light source has higher integration level, is easy to miniaturize and reduces the volume of the detector.

In a second aspect, the present invention provides a light source assembly, comprising: a light-focusing housing, a tungsten lamp, a mercury lamp, a deuterium lamp, and the light-focusing module of any of the foregoing embodiments.

The light-gathering shell comprises a second accommodating space for installing the light-gathering module, and a first mounting hole, a second mounting hole and a third mounting hole which are respectively communicated with the second accommodating space.

First mounting hole is used for the installation the tungsten lamp can make the tungsten lamp light beam penetrate in the one side of semi-transparent semi-reflecting mirror, the second mounting hole is used for the installation the mercury lamp can make the mercury lamp light beam penetrate in the another side of semi-transparent semi-reflecting mirror, the third mounting hole is used for the installation the deuterium lamp, the deuterium lamp is located focusing lens keeps away from one side of semi-transparent semi-reflecting mirror for receive coupling light beam.

Furthermore, the light-gathering shell is also provided with a heat dissipation structure for dissipating heat in the light-gathering shell to the outside.

Further, the light source assembly further comprises an insulating assembly.

The heat insulation assembly comprises an isolation seat, a quartz window and a window pressing ring, the isolation seat comprises a mounting hole, and the quartz window is fixedly connected to the mounting hole of the isolation seat through the window pressing ring.

And two opposite ends of the isolation seat are respectively provided with a positioning boss, the isolation seat is connected with the light gathering shell in a positioning manner through one positioning boss, and the other positioning boss is used for being connected with the detection assembly in a positioning manner.

Has the advantages that:

the utility model provides a light source subassembly includes aforementioned spotlight module, from this, technical advantage and effect that this light source subassembly reached include technical advantage and effect that spotlight module reached equally, and here is no longer repeated.

In a third aspect, the present invention provides a liquid phase detector, including: a detection assembly and a light source assembly according to any of the preceding embodiments.

The light-gathering shell is connected with the detection assembly in a positioning mode through the heat insulation assembly.

Has the advantages that:

the utility model provides a liquid phase detector includes aforementioned light source subassembly, from this, technical advantage and effect that this liquid phase detector reached include technical advantage and effect that the light source subassembly reaches equally, and here is no longer repeated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a cross-sectional view of a light-gathering module provided by an embodiment of the present invention, wherein the view shows a part of a light beam;

fig. 2 is a schematic view illustrating a splitting of a light condensing module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a light source assembly according to an embodiment of the present invention;

fig. 4 is a schematic partially-disassembled view of a light source module according to an embodiment of the present invention;

fig. 5 is a schematic longitudinal sectional view of a light source assembly according to an embodiment of the present invention;

fig. 6 is a second longitudinal schematic view of a light source assembly according to an embodiment of the present invention;

fig. 7 is a second schematic structural view of a light source module according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an insulating assembly in a light source assembly according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a liquid phase detector according to an embodiment of the present invention;

fig. 10 is a partially disassembled schematic view of a liquid phase detector according to an embodiment of the present invention.

Icon:

100-a base; 110-clear aperture; 120-inclined plane; 130-a limiting hole;

200-half mirror;

300-a focusing lens;

400-pressing a ring;

500-a light-gathering housing; 510-heat dissipation teeth; 520-a threaded hole;

610-tungsten lamps; 620-mercury lamps; 630-deuterium lamp;

700-an insulation assembly; 710-an isolation seat; 720-quartz window; 730-window pressing ring;

800-detecting a housing;

a W-tungsten lamp beam; g-mercury lamp beam; the O-coupled beam.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The present embodiment provides a light-focusing module, as shown in fig. 1, the light-focusing module includes a base 100, a half mirror 200 and a focusing lens 300; the base 100 includes a first accommodating space and a light-passing hole 110 communicating with the first accommodating space and allowing a mercury lamp light beam G to enter; the half mirror 200 and the focusing lens 300 are both mounted on the base 100, and the light-passing hole 110 is located between the half mirror 200 and the focusing lens 300; the half mirror 200 can couple the tungsten lamp beam W and the mercury lamp beam G, and the coupled beam O is converged to the focusing lens 300 through the first accommodation space.

In the light condensing module provided in this embodiment, the half mirror 200 and the focusing lens 300 are both mounted on the base 100, and the light-passing hole 110 is located between the half mirror 200 and the focusing lens 300, when in specific use, the half mirror 200 can couple the tungsten lamp beam W and the mercury lamp beam G by arranging the mercury lamp and the tungsten lamp, and the coupling beam O is converged on the focusing lens 300 through the first accommodating space; as can be seen from the foregoing, the half mirror 200 can form the coupling beam O, and the focusing lens 300 can focus the coupling beam O and output the coupling beam O.

The focusing lens 300 is a biconvex focusing lens.

Further, referring to fig. 1, the half mirror 200 is disposed obliquely, the half mirror 200 includes a proximal surface and a distal surface disposed oppositely, the proximal surface is close to the focusing lens 300, and the distal surface is far from the focusing lens 300; the near end face is arranged at an angle to the center line of the focusing lens 300, the near end face is used for reflecting the mercury lamp beam G, and the far end face is used for transmitting the tungsten lamp beam W.

The inclined arrangement of the half-transmitting and half-reflecting mirror 200 can not only reflect the mercury lamp light beam G, but also transmit the tungsten lamp light beam W, i.e. the tungsten lamp light beam W and the mercury lamp light beam G can be coupled.

Specifically, the angle between the half mirror 200 and the center line of the focusing lens 300 in this embodiment is 45 °. This arrangement ensures that the mercury lamp light beam G can enter the focusing lens 300 horizontally as shown in fig. 1, that is, the mercury lamp light beam G can enter the focusing lens 300 vertically, which enables better focusing.

It should be noted that the mercury lamp beam G has a linear spectrum, the tungsten lamp beam W has a continuous spectrum, and the deuterium lamp beam mentioned later also has a continuous spectrum.

Referring to fig. 2, the base 100 has a first end surface, a second end surface and a side surface connected therebetween; the first end surface is an inclined surface 120, and the half-transmitting and half-reflecting mirror 200 is fixedly connected to the inclined surface 120; the focusing lens 300 is installed in the first accommodating space and is close to the second end face; the light-passing hole 110 is opened on the side surface.

Optionally, the half mirror 200 is adhered to the 45-degree inclined plane of the base through an optical lens such as silica gel.

Referring to fig. 1 and 2, the focusing lens 300 is disposed in the first accommodating space through the pressing ring 400.

In some embodiments, the second end face of the base 100 forms first and second lands axially inward thereof, the first land having a diameter greater than a diameter of the second land; the pressing ring 400 is inserted into the first concave stage for pressing the focusing lens 300, so that the focusing lens 300 is clamped in the second concave stage.

Optionally, a surface of the pressing ring 400 contacting the focusing lens 300 is an arc surface, and the arc surface is adapted to an outer surface of the focusing lens 300, so as to ensure that the position of the focusing lens 300 is stable and the lens surface is not damaged.

The present embodiment further provides a light source assembly, as shown in fig. 3 or fig. 4, the light source assembly includes a light-gathering housing 500, a tungsten lamp 610, a mercury lamp 620, a deuterium lamp 630, and the light-gathering module; the light-gathering housing 500 includes a second accommodating space for installing the light-gathering module, and a first mounting hole, a second mounting hole and a third mounting hole respectively communicated with the second accommodating space; the first mounting hole is used for mounting a tungsten lamp 610, enabling a tungsten lamp beam W to be irradiated on one surface of the half mirror 200, the second mounting hole is used for mounting a mercury lamp 620, enabling a mercury lamp beam G to be irradiated on the other surface of the half mirror 200, and the third mounting hole is used for mounting a deuterium lamp 630, which is positioned on one side of the focusing lens 300 far away from the half mirror 200 and is used for receiving a coupling beam O.

Optionally, the light-gathering shell 500 is integrally formed by machining, so as to ensure the accuracy of the position of the central light port of the light beam center focusing deuterium lamp 630 of the tungsten lamp 610 and the mercury lamp 620.

In addition to the above-described embodiments, the tungsten lamp beam W is incident on the transmission surface of the half mirror 200, i.e., the upper surface of the half mirror 200 shown in fig. 2; the mercury lamp beam G passes through the light transmitting hole 110 and is incident on the reflection surface of the half mirror 200, i.e., the lower surface of the half mirror 200 shown in fig. 2.

Referring to fig. 3, 4, 5, or 6, the light collecting housing 500 is further provided with a heat dissipating structure for dissipating heat in the light collecting housing 500 to the outside.

Optionally, the heat dissipation structure includes heat dissipation teeth 510.

In this embodiment, the light-focusing housing 500 is a machined part formed by integral machining, the material is selected from aluminum alloy series materials in consideration of the influence of heat dissipation and machining performance, the tungsten lamp 610, the mercury lamp 620, the deuterium lamp 630 and the light-focusing module are combined together, the upper and lower parts of the light-focusing housing are provided with heat dissipation teeth 510 capable of dissipating heat, and specifications such as the distance and size of the heat dissipation teeth 510 are designed according to the temperature of the light source in operation and the normal working temperature required to be maintained by the whole machine.

Referring to fig. 4 and 5, the second accommodating space is a through hole, one end of the through hole is a second mounting hole, and the other end of the through hole is used for placing the light-gathering module into the second accommodating space. When the installation is carried out specifically, the light-gathering module is firstly installed, the light through hole 110 of the light-gathering module faces downwards, and the light is installed in the light-gathering shell 500 according to the direction shown in fig. 5; in order to ensure the 45-degree angle position of the half-transmitting and half-reflecting mirror 200, the fixing device can be realized by matching the fastening screw with the limiting hole, specifically, the light-gathering shell 500 is provided with a threaded hole 520, the light-gathering module is provided with the limiting hole 130, and the fastening screw is screwed into the limiting hole 130 through the threaded hole during installation, so that the light-gathering module is positioned and installed on the light-gathering shell 500.

After the condenser module is mounted, the tungsten lamp 610, the mercury lamp 620, and the deuterium lamp 630 are mounted, respectively. Referring to fig. 4, in a specific installation, the tungsten lamp 610 and the deuterium lamp 630 may be installed from the front position of the light-gathering housing 500, and the mercury lamp 620 may be installed from the side surface of the light-gathering housing 500, and this installation may allow a user to install the tungsten lamp 610, the mercury lamp 620, and the deuterium lamp 630 outside the light-gathering housing 500, and also may remove the same from the outside of the light-gathering housing 500, which is simpler and more convenient than the prior art that needs to be removed from the inside of the apparatus.

Referring to fig. 7 and 8, the light source assembly further includes an insulation assembly 700; the heat insulation assembly 700 comprises an isolation seat 710, a quartz window 720 and a window clamping ring 730, wherein the isolation seat 710 comprises a mounting hole, and the quartz window 720 is fixedly connected to the mounting hole of the isolation seat 710 through the window clamping ring 730; the two opposite ends of the isolation seat 710 are provided with positioning bosses, the isolation seat 710 is connected with the light-gathering shell 500 through one of the positioning bosses, and the other positioning boss is used for being connected with the detection assembly.

This thermal-insulated subassembly 700's effect is, on the one hand on the basis of playing sealed effect to spotlight casing 500, can avoid spotlight module's heat transfer to detection component, and the effect of location installation can be played to the location boss on the other hand isolation seat 710.

Wherein, the location boss is used for realizing the location with the hole on the detecting element and is connected.

Optionally, the quartz window 720 is a circular plane quartz plate, the thickness is generally about 1-2mm, and the quartz window 720 is pressed by screwing the window pressing ring 730 into the isolation seat 710.

When the optical detection device works, light beams converged by the light-converging module enter the detection assembly through the quartz window 720, and the quartz window 720 is made of a high-transmittance material for the optical bands of the tungsten lamp 610, the mercury lamp 620 and the deuterium lamp 630. The isolation seat 710 and the window pressing ring 730 are made of polyformaldehyde resin and other plastics which have good processability and are not easy to deform. Such materials are selected so as not to conduct heat generated by the light source to the rear sensing assembly portion.

It should be noted that, in the general technology, the sensors of the detection assembly and other devices are sensitive to temperature, and the heat conductivity of the aluminum alloy material of the light-gathering shell 500 itself is good, so that the direct contact with the detection assembly may cause heat transfer, which affects the work and performance of the rear-end detection unit. The heat generated by the light source can be prevented from being conducted to the rear end detection assembly portion by the selection of the aforementioned materials.

The working principle of the light source component is as follows: the mercury lamp beam G and the tungsten lamp beam W are coupled into the focusing lens 300 through the half mirror 200, converged to the central optical port of the deuterium lamp 630, and output together with the deuterium lamp beam into the optical path portion of the rear end detection assembly.

The present embodiment further provides a liquid phase detector, as shown in fig. 9 and 10, the liquid phase detector includes a detecting component and the light source component described above; the light gathering housing 500 is in positioned connection with the detection assembly through an insulation assembly 700.

Specifically, the detection assembly includes a detection housing 800, and the light-gathering housing 500 is connected to the detection housing 800 through a heat insulation assembly 700.

Optionally, a positioning hole matched with the positioning boss is formed in the detection housing 800.

Because the energy and index of the whole light path system are influenced by the central position of the light source in the liquid phase detector, the heat insulation assembly 700 is respectively matched and installed with the light condensation module and the detection assembly in a high-precision tolerance mode through the positioning bosses, and the high-precision matching of the central position of the light source and the position of the detection assembly is achieved. After the relative position of spotlight module and determine module, fix both with the position that can not influence the light source subassembly in order to guarantee in the transportation external impact through the screw.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A light concentrating module, comprising: a base (100), a half mirror (200), and a focusing lens (300);

the base (100) comprises a first accommodating space and a light through hole (110) which is communicated with the first accommodating space and enables a mercury lamp light beam (G) to enter; the semi-transparent semi-reflecting mirror (200) and the focusing lens (300) are both arranged on the base (100), and the light through hole (110) is positioned between the semi-transparent semi-reflecting mirror (200) and the focusing lens (300);

the semi-transparent semi-reflecting mirror (200) can couple tungsten lamp beams (W) and mercury lamp beams (G), and the coupled beams (O) are converged on the focusing lens (300) through the first accommodating space.

2. The concentrator module of claim 1, wherein the half mirror (200) is disposed obliquely, the half mirror (200) comprises a proximal surface and a distal surface disposed oppositely, the proximal surface being close to the focusing lens (300), and the distal surface being far from the focusing lens (300);

the near end face and the central line of the focusing lens (300) are arranged at an included angle, the near end face is used for reflecting mercury lamp light beams (G), and the far end face is used for transmitting tungsten lamp light beams (W).

3. The light-concentrating module of claim 2, wherein the angle between the half-mirror (200) and the central line of the focusing lens (300) is 45 °.

4. The light concentrating module of any one of claims 1-3, wherein the base (100) has a first end face, a second end face and a side face connected therebetween;

the first end face is an inclined plane (120), and the half-transmitting and half-reflecting mirror (200) is fixedly connected to the inclined plane (120); the focusing lens (300) is arranged in the first accommodating space and is close to the second end face;

the light through hole (110) is formed in the side face.

5. The light-concentrating module of claim 4, wherein the second end face of the base (100) forms a first land and a second land axially inwardly thereof, the first land having a diameter greater than the second land;

the pressing ring (400) is inserted into the first concave table and used for pressing the focusing lens (300) so that the focusing lens (300) is clamped in the second concave table.

6. The light focusing module according to claim 5, wherein the contact surface of the pressing ring (400) and the focusing lens (300) is a cambered surface, and the cambered surface is matched with the outer surface of the focusing lens (300).

7. A light source assembly, comprising: a condenser housing (500), a tungsten lamp (610), a mercury lamp (620), a deuterium lamp (630) and a condenser module according to any one of claims 1 to 6;

the light-gathering shell (500) comprises a second accommodating space for installing a light-gathering module, and a first mounting hole, a second mounting hole and a third mounting hole which are respectively communicated with the second accommodating space;

the first mounting hole is used for installing tungsten lamp (610), can make tungsten lamp light beam (W) shine in the one side of semi-transparent semi-reflecting mirror (200), the second mounting hole is used for installing mercury lamp (620), can make mercury lamp light beam (G) shine in the another side of semi-transparent semi-reflecting mirror (200), the third mounting hole is used for installing deuterium lamp (630), deuterium lamp (630) are located focusing lens (300) is kept away from one side of semi-transparent semi-reflecting mirror (200), is used for receiving coupling light beam (O).

8. The light source assembly of claim 7, wherein the light-gathering housing (500) is further provided with a heat dissipation structure for dissipating heat in the light-gathering housing (500) to the outside.

9. The light source assembly according to claim 7, further comprising a thermal insulation assembly (700);

the heat insulation assembly (700) comprises an isolation seat (710), a quartz window (720) and a window pressing ring (730), the isolation seat (710) comprises a mounting hole, and the quartz window (720) is fixedly connected to the mounting hole of the isolation seat (710) through the window pressing ring (730);

positioning bosses are arranged at two opposite ends of the isolation seat (710), the isolation seat (710) is connected with the light gathering shell (500) in a positioning mode through one of the positioning bosses, and the other positioning boss is used for being connected with the detection assembly in a positioning mode.

10. A liquid phase detector, comprising: a detection assembly and a light source assembly according to any one of claims 7-9;

the light gathering shell (500) is connected with the detection assembly in a positioning mode through a heat insulation assembly (700).