CN221056325U

CN221056325U - Concentrating cuvette

Info

Publication number: CN221056325U
Application number: CN202322599028.9U
Authority: CN
Inventors: 罗湘雯; 朱剑; 储瑞巍
Original assignee: Zhongke Kaili Instrument Suzhou Co ltd
Current assignee: Zhongke Kaili Instrument Suzhou Co ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2024-05-31
Anticipated expiration: 2033-09-25

Abstract

The utility model discloses a condensing cuvette. The condensing cuvette comprises a cuvette body which is provided with at least two light-transmitting planes, and a focusing element is arranged on at least one light-transmitting plane. The cuvette integrating the laser converging element is basically the same as the traditional cuvette in use method, additional converging elements and adjusting mechanisms are not needed to be added, the complexity of operation is not needed to be improved, the focusing function of light beams in the cuvette can be realized, and the detection efficiency is improved.

Description

Concentrating cuvette

Technical Field

The utility model belongs to the technical field of spectrum analysis, and particularly relates to a condensation cuvette.

Background

The cuvette, another absorption cell and the sample cell are used for containing reference liquid and sample liquid, are matched with a spectrum analyzer to quantitatively and qualitatively analyze substances, and are widely applied to chemical industry, metallurgy, medical treatment, medicine, food, environmental protection, power plants, water factories, petroleum and other industries, departments, universities and universities, scientific research unit tests and assays.

Through retrieving, patent CN 102866113A discloses 10MM standard cuvette structure, as shown in FIG. 1, including cuvette body 1, upper cover 2 lid dress is in the internal edge face of cuvette body 1, and the upper end of the logical plain noodles 3 of cuvette body 1 is provided with arrow structure 4, and the transparent surface 5 of logical plain noodles 3 of cuvette body 1 is the transparent structure of indent, and the non-logical plain noodles 6 equipartition of cuvette body 1 has vertical stripe recess 7, and the contact surface of upper cover 2 and cuvette body 1 is provided with at least two-layer tongue-and-groove seal structure 8. The cuvette main body part is of a cuboid structure, and in the optical detection processes of fluorescence, ultraviolet visible absorption and the like, light beams horizontally pass through the cuvette, so that a better focusing effect cannot be achieved, and fluorescence detection efficiency is low. If the laser converging element and the adjusting mechanism are added outside the cuvette to realize the focusing of the light beam, the complexity of a detection light path can be greatly increased, and the operation difficulty is improved.

Disclosure of utility model

The utility model mainly aims to provide a condensing cuvette which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the utility model comprises the following steps:

The utility model provides a condensing cuvette, which comprises a cuvette main body, wherein the cuvette main body is provided with at least two light-transmitting planes, and a focusing element is arranged on at least one light-transmitting plane.

Further, the plane of the focusing element is glued on the light passing plane of the cuvette body and the focusing element is made of fused quartz.

Still further, a hemispherical lens, a plano-convex spherical lens, a hemispherical cylindrical lens, or a plano-convex cylindrical lens.

Further, the cross section of the cuvette main body is square with the side length of 11-13mm, and the wall thickness is 0.5-1.5mm;

the radius of the hemispherical lens is 2-4mm;

The front surface radius of the plano-convex spherical lens is 2-3mm, the lens diameter is 3-5mm, the center thickness is 2-2.5mm, and the edge thickness is 1-1.5mm.

Further, the cross section of the cuvette main body is square with the side length of 12mm and the wall thickness of 1mm;

The radius of the hemispherical lens is 3mm;

the radius of the front surface of the plano-convex spherical lens is 2.9mm, the diameter of the lens is 4mm, the center thickness is 2.11mm, and the edge thickness is 1.3mm; by adopting the set of parameters, a better beam focusing effect can be realized, and the beam focus is positioned at the center of the cuvette.

Further, the cuvette body is made of a light transmissive material, wherein the light transmissive material comprises fused silica or polymethyl methacrylate.

Further, the focusing element is arranged in the center of the light passing plane.

Further, the focusing elements are provided in two, and the focusing elements are provided on a pair of parallel light passing planes.

Further, the focusing elements are arranged in two, and the focusing elements are arranged on two light passing planes which are perpendicular to each other.

Still further, the focusing elements are provided in three, and the focusing elements are provided in three light passing planes perpendicular to each other.

Further, the focusing elements arranged on the light passing planes adopt the same focusing element with the same specification or the same focusing element with different specifications or different focusing elements.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The condensing cuvette provided by the utility model can focus detection light in the cuvette, improves fluorescence excitation efficiency, realizes a better detection effect, and the focusing element is arranged on the cuvette main body to form a whole, so that the focusing function of light beams in the cuvette can be realized without adding an additional converging element and an adjusting mechanism or improving the complexity of operation, and the detection efficiency is improved.

(2) The condensing cuvette of the utility model can detect ultraviolet-visible absorption and fluorescence; when a cuvette design with focusing elements on three sides is used, it is convenient to switch between uv-visible absorption and fluorescence detection.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic diagram of a 10MM standard cuvette in accordance with the background of the application.

Fig. 2 is a schematic structural view of a condensing cuvette in example 1 of the present application.

Fig. 3 to 5 are schematic views of the light-transmitting optical paths of the condensing cuvette in fig. 2.

Fig. 6 and 7 are schematic views of the light-transmitting optical path of other structures of the condensing cuvette in example 1 of the present application.

Fig. 8 is a schematic structural diagram of a condensing cuvette in example 2 of the present application.

Fig. 9 is a schematic diagram of the structure of a cuvette according to example 3 of the present application.

Reference numerals illustrate: 1. the cuvette body, the upper cover, the light-passing surface, the arrow structure, the light-transmitting surface, the non-light-passing surface, the stripe grooves, the concave-convex groove sealing structure, the cuvette body and the focusing element are respectively arranged in sequence, wherein the cuvette body, the upper cover, the light-passing surface, the arrow structure, the light-transmitting surface, the light-passing surface, the non-light-passing surface, the stripe grooves and the concave-convex groove sealing structure are respectively arranged in sequence, the cuvette body and the focusing element are respectively arranged in sequence, and the cuvette body, the upper cover, the light-passing surface, the stripe grooves and the concave-convex.

Detailed Description

The utility model will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present utility model are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the utility model, which may be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present utility model in virtually any appropriately detailed embodiment.

Example 1

The embodiment provides a condensing cuvette, as shown in fig. 2, which comprises a cuvette main body 9, wherein the cross section of the cuvette main body 9 is square with a side length of 12mm, the wall thickness is 1mm, and the material is fused quartz; the cuvette body 9 is provided with a pair of parallel light-transmitting planes, a focusing element 10 is respectively glued at the centers of the pair of parallel light-transmitting planes, the focusing element 10 adopts a hemispherical lens with the radius of 3mm, and the hemispherical lens is made of fused quartz.

The glue should be as close as possible to the cuvette material in refractive index to reduce the interface optical losses. In practice, the cuvette body 9 contains a solution. Under the typical parameters, the simulated graph of the light path of the parallel light incidence is shown in fig. 3. The refractive index of the solution in the cuvette body 9 is calculated according to the refractive index of water, the first hemispherical lens focuses the parallel light at a position close to the center of the cuvette, and the scattered light beam is emitted through the second hemispherical lens to be emitted in a nearly collimated manner.

If the incident light is not exactly aligned, slightly offset from the center of the hemispherical lens, the optical path simulation is as shown in fig. 4 below. According to the imaging law of the hemispherical lens, when the position of the incident light beam is slightly deviated from the center of the hemispherical lens, the light beam can still be focused at the center of the cuvette and is emitted in a nearly collimated manner through the opposite hemispherical lens. Therefore, the condensing cuvette of the present embodiment does not require strict beam alignment, and can still work normally with a slight shift in the beam.

Similarly, when there is not only a spatial translation but also a slight tilt of the beam, its simulated diagram is shown in fig. 5 below. Therefore, the condensing cuvette of the embodiment does not need strict beam alignment, and can still work normally under the condition that the light beam is slightly deviated and inclined. The light beam slightly deviates and inclines to cover the most common light path adjustment deviation in actual use, the condensing cuvette provided by the invention can work normally under the common slight adjustment deviation, the tolerance of the light path setting and adjustment error is high, the requirements of the light path setting and adjustment are reduced in actual use, and the use is convenient.

In this embodiment, the focusing element 10 may be replaced by a plano-convex spherical lens, and the plano-convex spherical lens is made of fused silica, has a front surface radius of 2.9mm, a lens diameter of 4mm, a center thickness of 2.11mm, and a side thickness of 1.3mm, and the optical path simulation in this configuration is shown in fig. 6.

In practice, the focusing element 10 may be replaced by a hemispherical cylindrical lens or a plano-convex cylindrical lens.

The focusing element 10 may instead be of an asymmetric structure, as shown in fig. 7 below. One side adopts a hemispherical lens with the radius of 4mm, one side adopts a hemispherical lens with the radius of 2mm, and the hemispherical lens is made of fused quartz.

When the focusing element 10 adopts a hemispherical cylindrical lens or a plano-convex cylindrical lens, the translation of the light beam along the axial direction of the cylindrical surface does not influence the light path, and the difficulty of use and adjustment is further reduced.

The condensing cuvette provided in this embodiment can perform an ultraviolet-visible absorption test, in which one focusing element 10 is used for focusing an excitation beam, the other focusing element 10 is used for collimating a signal light, and the detection light path is coaxial with the excitation light path.

Example 2

This example provides a spot cuvette, as shown in fig. 8, which differs from example 1 in that: the cuvette body 9 has mutually perpendicular light-transmitting planes, a focusing element 10 is respectively glued at the centers of the mutually perpendicular light-transmitting planes, the focusing element 10 adopts a hemispherical lens with the radius of 3mm, the hemispherical lens is made of fused quartz, and other structures are the same.

The focusing element 10 may be replaced by a plano-convex spherical lens made of fused silica, having a front surface radius of 2.9mm, a lens diameter of 4mm, a center thickness of 2.11mm, and a side thickness of 1.3mm, or the focusing element 10 may be replaced by a hemispherical cylindrical lens or a plano-convex cylindrical lens.

When the incident beam has slight translation and slight inclination, the condensing cuvette provided by the embodiment can still work normally. The tolerance to the light path setting up and adjusting error is high, has reduced the light path in the in-service use and has set up and adjust the requirement, convenient to use.

The condensing cuvette provided in this embodiment may perform a fluorescence spectrum test, where one focusing element 10 is used for focusing an excitation beam, the other focusing element 10 is used for collimating a signal light, and the detection light path forms an angle of 90 ° with the excitation light path.

Example 3

This example provides a spot cuvette, as shown in fig. 9, which differs from example 1 in that: the cuvette main body 9 is provided with three light-transmitting planes, a focusing element 10 is respectively glued at the centers of the three light-transmitting planes, the focusing element 10 adopts a hemispherical lens with the radius of 3mm, the hemispherical lens is made of fused quartz, and other structures are the same.

The condensing cuvette provided in this embodiment can perform fluorescence and uv-vis absorption synchronous detection, wherein one focusing element 10 is used for focusing the excitation beam, the focusing element 10 perpendicular to the focusing element is used for collimating the fluorescent signal light, and the opposite focusing element 10 is used for collimating the uv-vis absorption detection light.

While the utility model has been described with reference to an illustrative embodiment, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed for carrying out this utility model, but that the utility model will include all embodiments falling within the scope of the appended claims. Moreover, unless specifically stated any use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.

Claims

1. The light-focusing cuvette is characterized by comprising a cuvette main body (9), wherein the cuvette main body (9) is provided with at least two light-transmitting planes, a focusing element (10) is arranged on at least one light-transmitting plane, the plane of the focusing element (10) is glued on the light-transmitting plane of the cuvette main body (9), and the focusing element (10) is made of fused quartz.

2. A spot-on cuvette according to claim 1, characterized in that: the focusing element (10) comprises a hemispherical lens, a plano-convex spherical lens, a hemispherical cylindrical lens or a plano-convex cylindrical lens.

3. A spot-on cuvette according to claim 2, characterized in that: the cross section of the cuvette main body (9) is square with the side length of 11-13mm, and the wall thickness is 0.5-1.5mm;

the radius of the hemispherical lens is 2-4mm;

4. A spot-on cuvette according to claim 1, characterized in that: the cuvette body (9) is made of a light-transmitting material, wherein the light-transmitting material comprises fused quartz or polymethyl methacrylate.

5. The spot light cuvette according to any one of claims 1-4, wherein: the focusing element (10) is arranged in the center of the light-passing plane.

6. The spot-on cuvette of claim 5, wherein: the number of the focusing elements (10) is two, and the focusing elements (10) are arranged on a pair of parallel light passing planes.

7. The spot-on cuvette of claim 5, wherein: the number of the focusing elements (10) is two, and the focusing elements (10) are arranged on two mutually perpendicular light transmission planes.

8. The spot-on cuvette of claim 5, wherein: the focusing elements (10) are arranged in three ways, and the focusing elements (10) are arranged on three mutually perpendicular light-transmitting planes.

9. The spot-light cuvette according to any one of claims 6-8, characterized in that: the focusing elements (10) arranged on the light passing planes adopt the same focusing element (10) with the same specification, or adopt the same focusing element (10) with different specifications, or adopt different focusing elements (10).