CN219161974U

CN219161974U - Sample analyzer

Info

Publication number: CN219161974U
Application number: CN202222579701.8U
Authority: CN
Inventors: 唐芝瀚
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-06-09
Anticipated expiration: 2032-09-28

Abstract

The embodiment of the application provides a sample analyzer, which comprises a liquid container and a light measurement system, wherein the light measurement system comprises an LED light source group, a light converging module, a light splitting device and a photoelectric detector which are sequentially arranged on a light path, the LED light source group is used for emitting light rays of a preset wave band required for detection, the LED light sources in the LED light source group comprise an ultraviolet LED light source and a non-ultraviolet LED light source, the non-ultraviolet LED light source comprises a visible light LED light source and/or an infrared LED light source, and the ultraviolet LED light source and the non-ultraviolet LED light source are packaged separately; the light converging module is used for converging light rays from the LED light source group into mixed light beams; the light splitting device is used for splitting the mixed light beam transmitted through the liquid container into a plurality of single-wavelength light beams; the photoelectric detector is used for receiving the single-wavelength light beam split by the light splitting device and performing photoelectric conversion. The light of different LED light sources is converged through the converging module, and a rear light splitting mode can be adopted based on mixed light of a plurality of LED light sources; the LED light source has longer service life and reduces maintenance cost.

Description

Sample analyzer

Technical Field

The application relates to the technical field of in-vitro diagnosis, in particular to a sample analyzer.

Background

A sample analyzer is an instrument that measures a specific chemical component in a sample according to the principle of optoelectric colorimetry.

In order to meet the requirement of high-speed detection flux, the current high-end biochemical analyzer mostly adopts a rear light splitting mode, wherein the rear light splitting mode refers to full-wave-band light when a light path of a detection light source enters a cuvette, and the light path is divided into a plurality of single-wave-band light rays to be respectively detected in intensity after emergent, so that the instrument can conveniently detect absorbance at a plurality of wavelengths at one time, and the detection speed is high.

Because the detection item of the sample analyzer usually uses the light wavelength of 320-900nm, in the related art, a halogen lamp is used as a detection light source, the wavelength of the light covers the whole wave band required by the detection item, but the detection light source has the defects of short service life and need to be replaced regularly, and the maintenance cost of the light source is high.

Disclosure of Invention

In view of this, it is desirable for the embodiments of the present application to provide a sample analyzer that uses an LED light source as a detection light source and employs a post-spectroscopic mode.

An embodiment of the present application provides a sample analyzer, including:

the liquid container is used for containing liquid to be detected;

the optical measurement system comprises an LED light source group, a light converging module, a light splitting device and a photoelectric detector which are sequentially arranged on an optical path,

the LED light source group is used for emitting light rays of a preset wave band required for detection, the LED light sources in the LED light source group comprise ultraviolet LED light sources and non-ultraviolet LED light sources, the non-ultraviolet LED light sources comprise visible light LED light sources and/or infrared LED light sources, and the ultraviolet LED light sources and the non-ultraviolet LED light sources are packaged separately;

the light converging module is used for converging light rays from the LED light source group into mixed light beams;

the light splitting device is used for splitting the mixed light beam passing through the liquid container into a plurality of single-wavelength light beams;

the photoelectric detector is used for receiving the single-wavelength light beam split by the light splitting device and performing photoelectric conversion.

In some embodiments, the ultraviolet LED light source has at least one package structure, the non-ultraviolet LED light source has at least another package structure, the package structure includes a base, at least one LED chip, a housing, a connection wire, and a terminal, the housing and the base are combined together to form a closed space, the LED chip is packaged in the closed space and electrically connected with the terminal through the connection wire, and the terminal is used for accessing an external circuit.

In some embodiments, the sample analyzer includes a light arranging module for arranging light of the plurality of LED light sources into parallel light, and the light converging module is for receiving the parallel light arranged by the light arranging module and converging the parallel light.

In some embodiments, the light converging module includes a first converging lens, each LED light source of the LED light source group is located at one side of the first converging lens and is sequentially arranged, the light ray arranging module includes a plurality of first collimating lenses, each LED light source is correspondingly arranged with at least one first collimating lens, and a plurality of parallel light beams collimated by each first collimating lens by the LED light sources are incident to the first converging lens along a direction parallel to an optical axis of the first converging lens.

In some embodiments, the light converging module includes a first converging lens, the light ray finishing module includes at least one beam combining lens disposed on an optical path between the LED light source group and the first converging lens, and the beam combining lens is obliquely disposed with respect to an optical axis of the first converging lens, so as to combine light rays of different LED light sources into parallel light beams in a reflection and transmission manner.

In some embodiments, the number of the LED light sources is two, the number of the beam combiner is one, and the two LED light sources are respectively located on the light transmitting side and the light reflecting side of the beam combiner; and/or the number of the groups of groups,

the number of the LED light sources is at least two, the beam combining mirrors are arranged in parallel, and at least one LED light source is arranged on the light reflecting side of each beam combining mirror; and/or the number of the groups of groups,

the number of the LED light sources is at least three, the number of the beam combining lenses is at least two, the beam combining lenses are arranged in parallel, one LED light source is positioned on the light transmission side of the beam combining lens farthest from the first converging lens along the light path propagation direction, and the other LED light sources are arranged on the light reflection side of the corresponding beam combining lens; and/or the number of the groups of groups,

the light ray arrangement module comprises a plurality of collimating lenses, one collimating lens is arranged on a light path between the light emitting side of each LED light source and the corresponding beam combining lens, and the beam combining lens is used for receiving light rays collimated by the collimating lenses.

In the embodiment of the application, the ultraviolet LED light source and the non-ultraviolet LED light source are packaged separately, so that the light efficiency and the reliability of ultraviolet light can be ensured, and adverse effects of the ultraviolet LED light source on the non-ultraviolet LED light source can be avoided; the plurality of LED light sources are adopted as detection light sources, the wavelength covers the wave bands required by detection projects, and the light of different LED light sources is converged through the light converging module, so that the sample analyzer of the embodiment of the application can adopt a post-light splitting mode based on the mixed light of the plurality of LED light sources, the sample analyzer can conveniently detect the absorbance at the plurality of wavelengths at one time, and the detection speed is high; because the LED light source itself has longer service life, the maintenance cost can be reduced.

An embodiment of the present application provides a sample analyzer, including:

the liquid container is used for containing a sample liquid to be detected;

the optical measurement system comprises an LED light source group, a light guide device, a light converging module, a light splitting device and a photoelectric detector which are sequentially arranged along an optical path,

the LED light source group is used for emitting light rays of a preset wave band required for detection;

the light guide device is used for receiving the light rays of the LED light source groups, the light guide device is internally provided with a diffuse reflection part, the light rays of the LED light sources enter the light guide device, and mixed light rays are output from the light emitting surface of the light guide device under the diffuse reflection effect of the diffuse reflection part;

a light converging module for converging the mixed light outputted by the light guide device into a mixed light beam,

the light-splitting device is used for splitting the mixed light transmitted through the liquid container into a plurality of single-wavelength light beams;

and the photoelectric detector is used for receiving the single-wavelength light beam split by the light splitting device and performing photoelectric conversion.

In some embodiments, the light converging module includes a converging lens and an optical fiber, the converging lens and the optical fiber are disposed on an optical path between the light guide device and the converging lens, and the converging lens is used for coupling the mixed light output by the light guide device into the optical fiber.

In some embodiments, the light converging module includes a collimating lens disposed on an optical path between the light emitting side of the optical fiber and the liquid container, and the collimating lens is configured to collimate the mixed light output by the optical fiber, and the collimated light collimated by the collimating lens passes through the liquid container.

In some embodiments, the surface of the light guide device outside the light incident surface and the light emergent surface is a total reflection surface, and the light entering the light guide device from the light incident surface is emitted from the light emergent surface after at least one total reflection and/or at least one diffuse reflection in the light guide device; and/or the light incident surface and the light emergent surface are vertically arranged.

In some embodiments, the light guide device is plate-shaped;

the LED light sources are arranged on any one side or multiple sides of the light guide device along the thickness direction perpendicular to the light guide device; and/or the number of the light guide devices is a plurality, and the plurality of the light guide devices are arranged in a lamination manner along the thickness direction of the light guide devices.

According to the sample analyzer disclosed by the embodiment of the application, the plurality of LED light sources are adopted as the detection light sources, the wavelength covers the wave bands required by a detection project, and the light rays of different LED light sources are converged through the light converging module, so that the sample analyzer disclosed by the embodiment of the application can adopt a post-light splitting mode based on the mixed light rays of different LED light sources, the sample analyzer can conveniently detect the absorbance at a plurality of wavelengths at one time, and the detection speed is high; because the LED light source itself has longer service life, the maintenance cost can be reduced.

Drawings

FIG. 1 is a simplified schematic diagram of a sample analyzer according to a first embodiment of the present application;

FIG. 2 is a simplified schematic diagram of a sample analyzer according to a second embodiment of the present application;

FIG. 3 is a simplified schematic diagram of a sample analyzer according to a third embodiment of the present application;

FIG. 4 is a simplified schematic diagram of a sample analyzer according to a fourth embodiment of the present application;

FIG. 5 is a simplified schematic diagram of a sample analyzer according to yet another embodiment of the present application;

FIG. 6 is a schematic diagram of the light guide device and the LED light source in FIG. 5;

fig. 7 is a schematic diagram of a plurality of light guide devices and LED light sources in fig. 5.

Description of the reference numerals

10-a liquid container 20-an LED light source 30-a light splitting device 40-a photoelectric detector;

70-a second converging lens 80-a light guide device 81-a diffuse reflection part 60-a converging module 62-an optical fiber; 61-a first converging lens; 64-converging lens;

52-

beam combining lenses

53, 54, 63-collimating lens

Detailed Description

Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the present application but are not intended to limit the scope of the present application.

In the description of the embodiments of the present application, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Embodiments of the present application provide a sample analyzer that includes a liquid container 10 and a photometric system.

The liquid container 10 is used for containing liquid to be detected. The liquid container 10 may be a cuvette, or the like comprising a plurality of cuvettes.

Referring to fig. 1 to 5, the optical measurement system includes an LED light source group, a light converging module 60, a light splitting device 30, and a photodetector 40 sequentially disposed on an optical path.

The LED light source group is used for emitting light rays of a preset wave band required for detection.

The LED light source 20 can be considered a point light source in the light path.

All the wavelengths of the LED light sources 20 need to cover the wavelengths required for the inspection item. Since the sample analyzer usually uses some wavelengths of light between 320 and 900nm (nanometers), for example, 340nm, 380nm, 405nm, 450nm, 480nm, 500nm, 545nm, 570nm, 600nm, 660nm, 700nm, 750nm and 800nm, each of the above wavelengths corresponds to at least one LED chip because the LED chips emit light of a single wavelength.

The LED light sources 20 in the LED light source group include ultraviolet LED light sources and non-ultraviolet LED light sources. The ultraviolet LED light source is LED light source 20 that emits ultraviolet light, and for example, the emission wavelength is 320 to 400nm.

The non-ultraviolet LED light sources include visible LED light sources and/or infrared LED light sources.

The visible light source is an LED light source 20 that emits visible light, for example, light having a wavelength of 401 to 760nm.

The infrared LED light source is LED light source 20 emitting infrared light, and for example, the emission wavelength is 761 to 900nm.

The ultraviolet LED light source and the non-ultraviolet LED light source are packaged separately.

It should be noted that the separate package means that the LED chips of the ultraviolet LED light source are not packaged in the same package structure as the LED chips of the non-ultraviolet LED light source. That is, the ultraviolet LED light source has at least one package structure, and the non-ultraviolet LED light source has at least another package structure. It should be noted that, the packaging structure of the non-ultraviolet LED light source may be packaged by some transparent organic materials (such as epoxy resin, silica gel, etc.), so as to realize light output and adjustment, and protect the LED chip and the circuit. However, because the heat resistance and the heat conductivity of the organic material are low, if the ultraviolet LED chip and the non-ultraviolet LED chip are packaged in the same packaging structure, the temperature of the organic packaging layer is increased due to the heat generated by the ultraviolet LED chip, and the organic material is easy to be thermally degraded and aged even irreversibly carbonized at high temperature for a long time; in addition, under high-energy ultraviolet radiation, the organic packaging layer may be irreversibly changed such as reduced transmittance, microcracks and the like; furthermore, the organic material can be degraded by ultraviolet under the long-time ultraviolet radiation, and the light efficiency and reliability of the ultraviolet LED light source are affected.

Therefore, in the embodiment of the application, the ultraviolet LED light source and the non-ultraviolet LED light source are packaged separately, so that the light efficiency and the reliability of ultraviolet light can be ensured, and adverse effects of the ultraviolet LED light source on the non-ultraviolet LED light source can be avoided.

The light converging module 60 is disposed on the light incident side of the liquid container 10, and the light converging module 60 is configured to converge light from the LED light source group into a mixed light beam, and the mixed light beam is incident into the liquid container 10 and is transmitted through the liquid container 10. That is, the mixed light beam incident into the liquid container 10 is a mixed light of multiple wavelengths.

The spectroscopic device 30 is for splitting the mixed light beam transmitted through the liquid container 10 into a plurality of single-wavelength light beams.

The photodetector 40 is configured to receive the single-wavelength light beam split by the spectroscopic device 30 and perform photoelectric conversion.

When the incident light beam passes through the liquid container 10, the light beam is transmitted through the liquid to be detected contained in a single cuvette or reaction cup, and when the light beam passes through the liquid to be detected, the absorption degree of different detected substances in the liquid to be detected on light rays with different wavelengths is different, and the concentration of the detected substances can be calculated by measuring the energy change of the light rays before and after passing through the liquid container 10 according to the lambert-beer law.

According to the sample analyzer disclosed by the embodiment of the application, the plurality of LED light sources 20 are adopted as detection light sources, the wavelength covers the wave bands required by detection projects, and the light rays of different LED light sources 20 are converged through the converging module 60, so that the sample analyzer disclosed by the embodiment of the application can adopt a post-light splitting mode based on the mixed light rays of the plurality of LED light sources 20, the sample analyzer can conveniently detect the absorbance at a plurality of wavelengths at one time, and the detection speed is high; since the LED light source 20 itself has a long life, maintenance costs can be reduced.

The specific configuration of the above-described package structure is not limited.

Illustratively, the package structure of the LED light source 20 includes a base, at least one LED chip, a housing, connecting wires, and terminals, the housing and the base being combined together to form a closed space, the LED chip being packaged in the closed space and electrically connected to the terminals through the connecting wires, the terminals being used for accessing an external circuit. The shell is made of light-transmitting materials, and light rays of the LED chip are emitted from all or part of the shell. The base may be a circuit board, or other configuration for supporting a circuit board. The LED chip can be directly arranged on the base, and also can be indirectly arranged on the base through structures such as a bracket and the like.

It should be noted that one LED chip, or a plurality of LED chips may be packaged in the same package structure.

The ultraviolet LED light source and the non-ultraviolet LED light source can adopt the packaging structure, and different materials can be selected according to actual needs.

The specific packaging mode of the packaging structure is not limited, for example, COB (chip on Board) packaging, SMD (Surface Mounted Devices, surface mounted device) packaging, and other packaging modes in the prior art can be adopted, which are not limited herein.

Illustratively, the sample analyzer includes a light arranging module for arranging the light of the plurality of LED light sources 20 into parallel light, and a light converging module 60 for receiving and converging the parallel light arranged by the light arranging module. That is, the light ray finishing module is disposed on the light path between the LED light source group and the liquid container 10.

In this embodiment, the light is arranged into parallel light by the light arranging module, so that the converging efficiency of the converging module 60 is improved, more light is converged to the liquid container by the converging module 60, and the light utilization rate is improved.

The light converging module 60 may be one optical device or a combination of a plurality of optical devices.

Illustratively, the converging module 60 includes a first converging lens 61, the first converging lens 61 being a convex lens.

In some embodiments, the light converging module 60 includes only the first converging lens 61, and in other embodiments, the light converging module 60 includes the first converging lens 61 and other optics.

The specific type of light management module is not limited and may be a collimating lens and/or a beam combiner 52, etc.

Referring to fig. 1 to 4, the optical measurement system further includes a second converging lens 70, where the second converging lens 70 is disposed on an optical path between the liquid container 10 and the light splitting device 30, and is used for converging the composite light transmitted through the liquid container 10, and the light splitting device 30 is used for receiving the light beam converged by the second converging lens 70.

Various specific embodiments of the present application are described below with reference to the accompanying drawings.

First embodiment

Referring to fig. 1, the converging module 60 includes a first converging lens 61, and the first converging lens 61 is a convex lens.

The LED light sources 20 of the LED light source group are located at one side of the first condensing lens 61 and are sequentially arranged. The light ray arranging module includes a plurality of collimating lenses 53, and each LED light source 20 is disposed corresponding to at least one collimating lens 53, so that the light ray of each LED light source 20 can be collimated by the corresponding collimating lens 53 and then incident to the first converging lens 61.

The parallel light beams of the plurality of LED light sources 20 collimated by the corresponding collimator lenses 53 are incident to the first condenser lens 61 in a direction parallel to the optical axis of the first condenser lens 61. That is, the optical axis of each of the collimator lenses 53 is parallel to the optical axis of the first condensing lens 61, so that the collimated light rays collimated by each of the collimator lenses 53 are substantially parallel to each other.

In fig. 1, the number of LED light sources 20 is exemplarily shown as four. At least one of the four LED light sources 20 is an ultraviolet LED light source, at least one other is a non-ultraviolet LED light source, and the remaining LED light sources can be configured as ultraviolet LED light sources or non-ultraviolet LED light sources according to the band requirement.

Second embodiment

Referring to fig. 2, the converging module 60 includes a first converging lens 61, and the first converging lens 61 is a convex lens.

The light ray finishing module comprises at least one beam combining lens 52 arranged on the light path between the LED light source group and the first converging lens, and the beam combining lens 52 is obliquely arranged relative to the optical axis of the first converging lens 61 so as to combine the light rays of different LED light sources 20 into parallel light beams in a reflection and transmission mode.

It should be noted that, the optical path principle of the beam combiner 52 is: one of the light beams is incident on the beam combining lens 52 from the light transmitting side of the beam combining lens 52 and is emitted from the light reflecting side of the beam combining lens 52, the other light beam is incident on the beam combining lens 52 from the light reflecting side of the beam combining lens 52, the light beams are reflected on the surface of the beam combining lens 52, and the reflected light beams and the transmitted light beams are mixed together.

The number of the LED light sources 20 is two, the number of the beam combining mirrors 52 is one, and the two LED light sources 20 are respectively positioned on the light transmitting side and the light reflecting side of the beam combining mirrors 52.

It should be noted that, in this embodiment, one of the two LED light sources 20 is an ultraviolet LED light source, and the other is a non-ultraviolet LED light source, that is, all the ultraviolet LED chips are integrally packaged in one package structure, and all the visible LED chips and/or all the infrared LED chips are integrated in the other package structure.

Third embodiment

Referring to fig. 3, the third embodiment is similar to the second embodiment, except that it includes: the number of the beam combining lenses 52 is multiple, each beam combining lens 52 is arranged in parallel, the number of the LED light sources 20 is at least two, at least one LED light source 20 is arranged on the light reflecting side of each beam combining lens 52, and each LED light source 20 is uniformly distributed on the corresponding light reflecting side of the beam combining lens 52.

In this embodiment, only the light reflection occurs at one beam combiner 52 furthest from the light converging module 60, and there is no light transmission, and the remaining beam combiners 52 have both light transmission and light reflection.

Illustratively, the light ray finishing module further includes a plurality of collimating lenses 54, at least one collimating lens 54 is disposed on the light path between the light emitting side of each LED light source 20 and the corresponding beam combining lens 52, and the beam combining lens 52 is configured to receive the light rays collimated by the collimating lens 54, so that the parallel degree of the mixed light rays converged by the beam combining lens 52 is better, which is more beneficial to the convergence of the converging module 60.

Fourth embodiment

Referring to fig. 4, the fourth embodiment is similar to the third embodiment, except that it includes: the number of the LED light sources 20 is at least three, the number of the beam combining lenses 52 is at least two, each beam combining lens 52 is arranged in parallel, one LED light source 20 is located on the light transmitting side of the beam combining lens 52 farthest from the first converging lens along the light path propagation direction, and the other LED light sources 20 are arranged on the light reflecting side of the corresponding beam combining lens 52.

In this embodiment, each beam combiner 52 has both light transmission and light reflection.

In the second and fourth embodiments, the collimator lens in the third embodiment may be provided.

Referring to fig. 5, the optical measuring system includes an LED light source group, a light guide device 80, a light converging module 60, a light splitting device 30, and a photodetector 40 sequentially arranged along an optical path,

The non-ultraviolet LED light sources include visible LED light sources and infrared LED light sources.

The light guide device 80 is configured to receive light from the LED light source group, and the light guide device 80 has a diffuse reflection portion 81 therein, and light from each LED light source 20 enters the light guide device 80 and outputs mixed light from the light exit surface of the light guide device 80 through diffuse reflection of the diffuse reflection portion 81. The light is diffusely reflected on the diffuse reflection portion 81, the diffuse reflection portion 81 breaks the total reflection path of the light in the light guide device 80, and the light distribution of each LED light source 20 tends to be disordered due to the disordered light distribution after diffuse reflection, so that the light emitted from the light emitting surface of the light guide device 80 is uniformly mixed.

The light converging module 60 is disposed on the light incident side of the liquid container 10, and the light converging module 60 is configured to converge the mixed light outputted by the light guide device 80 into a mixed light beam, and the mixed light beam is incident into the liquid container 10 and is transmitted through the liquid container 10. That is, the mixed light beam incident into the liquid container 10 is a mixed light of multiple wavelengths.

The light-splitting device 30 is used for splitting the mixed light transmitted through the liquid container 10 into a plurality of single-wavelength light beams.

According to the sample analyzer disclosed by the embodiment of the application, the plurality of LED light sources 20 are adopted as detection light sources, the wavelength covers the wave bands required by detection projects, and the light rays of different LED light sources 20 are converged through the light guide device 80 and the light converging module 60, so that the sample analyzer disclosed by the embodiment of the application can adopt a post-light splitting mode based on the mixed light rays of different LED light sources 20, the sample analyzer can conveniently detect absorbance at a plurality of wavelengths at one time, and the detection speed is high; since the LED light source 20 itself has a long life, maintenance costs can be reduced.

Illustratively, the converging module 60 includes a converging lens 64, the converging lens 64 being a convex lens.

In some embodiments, the light collected by the collecting lens 64 is directly incident on the liquid container 10, that is, no other optical device is disposed on the optical path between the collecting lens 64 and the liquid container 10.

In other embodiments, referring to fig. 5, the light converging module 60 further includes an optical fiber 62 disposed on the light emitting side of the converging lens 64, the converging lens 64 and the optical fiber 62 are disposed on the light path between the light guide device 80 and the liquid container 10, and the converging lens 64 is used to couple the mixed light outputted from the light guide device 80 into the optical fiber 62. The light beam exiting the optical fiber 62 is directly or indirectly incident on the liquid container 10.

In this embodiment, the optical fiber 62 can flexibly adapt to the arrangement position of the optical device on the optical path, and the design flexibility of the optical path of the optical measurement system is improved.

For example, referring to fig. 2, the light converging module 60 further includes a collimating lens 63 disposed on an optical path between the light emitting side of the optical fiber 62 and the liquid container 10, the collimating lens 63 is configured to collimate the mixed light beam output from the optical fiber 62, and the collimated light beam collimated by the collimating lens 63 is transmitted through the liquid container 10.

The light beam emitted from the end of the optical fiber 62 has a certain divergence angle, and more light rays can be coupled and incident into the liquid container 10 through the collimation of the collimating lens 63, so that the light ray utilization rate is improved.

Illustratively, the surfaces of the light guide device 80 outside the light incident surface and the light emergent surface are total reflection surfaces, and the light entering the light guide device 80 from the light incident surface is emitted from the light emergent surface after at least one total reflection and/or at least one diffuse reflection in the light guide device 80. That is, the light entering the light guide device 80 from the light incident surface is not directly emitted from the light emitting surface, so that the uniformity of the light of each LED light source 20 in the light guide device 80 can be improved.

The relative positional relationship between the light incident surface and the light emergent surface is not limited, as long as the light entering the light guide device 80 from the light incident surface can be emitted from the light emergent surface after at least one total reflection and/or at least one diffuse reflection in the light guide device 80.

Illustratively, the light entrance surface and the light exit surface are arranged vertically. Therefore, the light incident from the light incident surface can be ensured not to be directly emitted from the light emergent surface.

The specific shape of the light guide 80 is not limited.

The light guide 80 is illustratively plate-shaped. The thickness direction of the light guide 80 is substantially parallel to the optical axis direction of the condensing lens 64. Illustratively, the light-emitting side of the light guide device 80 faces the converging lens 64 and is substantially perpendicular to the optical axis direction of the converging lens 64.

Referring to fig. 6, the led light sources 20 are disposed at any one or more sides of the light guide 80 in a direction perpendicular to the thickness direction of the light guide 80.

The number of the light guide devices 80 may be one or more, and is not limited herein.

For example, referring to fig. 7, the number of light guide devices 80 is plural, and the plurality of light guide devices 80 are stacked in the thickness direction of the light guide devices 80. One or more LED light sources 20 are arranged around each light guide device 80, and the power requirement of the LED light sources 20 can be met by adding the number of the light guide devices 80.

In the description of the present application, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described herein, as well as the features of the various embodiments or examples, may be combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A sample analyzer, comprising:

the liquid container is used for containing liquid to be detected;

2. The sample analyzer of claim 1, wherein the uv LED light source has at least one package structure and the non-uv LED light source has at least another package structure, the package structure including a base, at least one LED chip, a housing, connecting wires, and terminals, the housing and the base being bonded together and forming a sealed space, the LED chip being packaged in the sealed space and electrically connected to the terminals through the connecting wires, the terminals for accessing an external circuit.

3. The sample analyzer of claim 1, comprising a light arranging module for arranging light of the plurality of LED light sources into parallel light, the light converging module for receiving the parallel light arranged by the light arranging module and converging the parallel light.

4. The sample analyzer of claim 3, wherein the light converging module comprises a first converging lens, the LED light sources of the LED light source group are located at one side of the first converging lens and are sequentially arranged, the light ray arranging module comprises a plurality of first collimating lenses, each LED light source is arranged corresponding to at least one first collimating lens, and parallel light beams collimated by the LED light sources through the first collimating lenses are incident to the first converging lens along a direction parallel to an optical axis of the first converging lens.

5. The sample analyzer of claim 3, wherein the light converging module comprises a first converging lens, and the light ray finishing module comprises at least one beam combining lens arranged on an optical path between the LED light source group and the first converging lens, and the beam combining lens is obliquely arranged relative to an optical axis of the first converging lens so as to combine light rays of different LED light sources into parallel light beams in a reflecting and transmitting mode.

6. The sample analyzer of claim 5, wherein the number of the LED light sources is two, the number of the beam combiner is one, and the two LED light sources are respectively positioned on the light transmitting side and the light reflecting side of the beam combiner; and/or the number of the groups of groups,

7. A sample analyzer, comprising:

the liquid container is used for containing a sample liquid to be detected;

8. The sample analyzer of claim 7, wherein the light collection module comprises a collection lens and an optical fiber, the collection lens and the optical fiber being disposed in an optical path between the light guide and the liquid container, the collection lens being configured to couple the mixed light output by the light guide into the optical fiber.

9. The sample analyzer of claim 8, wherein the light converging module includes a collimating lens disposed on an optical path between the light emitting side of the optical fiber and the liquid container, the collimating lens being configured to collimate the mixed light beam output from the optical fiber, and the collimated light beam collimated by the collimating lens passing through the liquid container.

10. The sample analyzer according to claim 7, wherein the surface of the light guide device outside the light incident surface and the light emergent surface is a total reflection surface, and the light entering the light guide device from the light incident surface is emitted from the light emergent surface after at least one total reflection and/or at least one diffuse reflection in the light guide device; and/or the light incident surface and the light emergent surface are vertically arranged.

11. The sample analyzer of claim 7, wherein the light guide is plate-shaped;