CN210465236U - Light-shading structure for optical signal detection - Google Patents
Light-shading structure for optical signal detection Download PDFInfo
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- CN210465236U CN210465236U CN201920686438.8U CN201920686438U CN210465236U CN 210465236 U CN210465236 U CN 210465236U CN 201920686438 U CN201920686438 U CN 201920686438U CN 210465236 U CN210465236 U CN 210465236U
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Abstract
The utility model relates to a light-resistant structure that light signal detected, include: the rotary table comprises a base, a rotary body pivoted with the base and a cover plate arranged towards the rotary body. The rotating body is provided with a first shading piece; the rotating body is provided with at least one cup hole; the cup hole is provided with a detection port; the cover plate is provided with a second shading part; the second shading part and the first shading part are mutually matched to form an annular structure for shading light, and a gap is arranged at the joint of the second shading part and the first shading part; the detection port is positioned at the outer sides of the first shading piece and the second shading piece; the cover plate is provided with at least one aperture. Above-mentioned chemiluminescence survey's light-resistant structure, the annular structure who is used for shielding light that sets up between apron and the rotator can solve the problem of the light leak of darkroom effectively, and its simple structure reduces the influence to equipment.
Description
Technical Field
The utility model relates to an inspection equipment technical field especially relates to a light-resistant structure that light signal detected.
Background
In the field of inspection equipment, there are many instruments and apparatuses that use light-sensitive devices, such as photomultiplier tubes, to perform measurements of weak light signals. Such as a chemiluminescence analyzer, which refers to light emitted using energy generated by a chemical reaction, for example, light emitted when a molecule is excited by a chemical reaction to become an excited state and returns from the excited state to a ground state. Also for example, it is produced by a reaction of an enzyme with a substrate, or by applying an electrochemical stimulus to a labeling substance, or it is produced based on the LOCI (complete name: luminescence Oxygen channel Immunoassay, complete name: Luminescent Oxygen channel Immunoassay, complete name: Chinese) method, or it is produced based on bioluminescence. Chemiluminescence measurement refers to measurement of chemiluminescence. Therefore, in chemiluminescence measurement, a dark room environment needs to be constructed for the photosensitive device to protect from light. The dark room refers to a space surrounded by a light shielding portion. The darkroom is not particularly limited as long as it is a dark space in which chemiluminescence can be stably detected. For example, the darkroom is a space surrounded by the light shielding portion so that the number of incident photons detected in the darkroom is 10000 numbers/(mm 2 · s) or less when no chemiluminescence occurs in the cartridge.
The light-shielding structure of the traditional chemiluminescence assay is generally used for achieving the purpose of shielding light by arranging a completely closed darkroom, and has the defect that the structure of equipment needs to be increased, for example, a flip mechanism for completely closing a reaction cavity is arranged, and the structure of the equipment is complicated by the solution.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a light-resistant structure that light signal detected, its annular structure that is used for shielding light that sets up between through apron and the rotator can solve the problem of the light leak of darkroom effectively, and its simple structure reduces the influence to equipment.
A light-shielding structure for optical signal detection, comprising:
a base; the base is provided with a containing groove;
a rotating body pivotally connected to the base; the rotating body is accommodated in the accommodating groove; the rotating body is provided with a first shading piece; the rotating body is provided with at least one cup hole; the cup hole is provided with a detection port serving as a signal input port of the photosensitive device; and
a cover plate disposed toward the rotating body; the cover plate covers the opening of the containing groove; the cover plate is provided with a second shading part; the second shading part and the first shading part are mutually matched to form an annular structure for shading light, and a gap is arranged at the joint of the second shading part and the first shading part; the detection port is positioned at the outer sides of the first shading piece and the second shading piece; the cover plate is provided with at least one aperture.
The light-shielding structure for chemiluminescence measurement comprises a base, a rotating body and a cover plate, which form a darkroom for detecting optical signals. An annular structure which is composed of a first shading piece and a second shading piece and is used for shading light is arranged between the cover plate and the rotating body. When the outside light penetrates into the hole opening in the cover plate and penetrates into the cup hole in the rotating body, the linearly transmitted light is blocked by the annular structure constructed between the cover plate and the rotating body based on the principle of linear transmission of the light, so that the light is difficult to enter the photosensitive device at the position of the detection hole, and the purpose of avoiding light is achieved. In addition, a gap is arranged at the joint of the first shading piece and the second shading piece, so that the rotating body can rotate relative to the cover plate. Above-mentioned design, the annular structure who is used for shielding light that sets up between apron and the rotator can solve the problem of the light leak of darkroom effectively, and its simple structure reduces the influence to equipment.
In one embodiment, the first shading piece is a convex ring, and the second shading piece is a groove; or the first shading piece is a groove, and the second shading piece is a convex ring.
In one embodiment, the first shading piece and the second shading piece are both convex rings and are sleeved with each other.
In one embodiment, the width of the gap is no greater than 1 mm. The gap between the first shading part and the second shading part is set in the range not larger than 1mm, so that the probability that light enters the mounting hole in the modes of diffuse reflection and the like can be reduced.
In one embodiment, the cover is removably attached to the base or hingedly attached to the base.
In one embodiment, the number of the first light-shielding members is a plurality of concentric structures which are arranged by taking the rotating shaft of the rotating body as a center, and the number of the first light-shielding members is inversely proportional to the diameter of the cover plate.
In one embodiment, the number of the second light-shielding members is a plurality of concentric structures which are arranged by taking the rotating shaft of the rotating body as a center, and the number of the second light-shielding members is inversely proportional to the diameter of the cover plate.
In one embodiment, the surface of the upper cover provided with the first shading part and the surface of the rotating body provided with the second shading part are both provided with the weak light processing layer. The weak light processing layer is used for weakening the capacity of diffuse reflection of light between the first light shielding member and the second light shielding member.
In one embodiment, the low-light processing layer is a black layer or a matte oxide layer.
In one embodiment, the light-shielding structure of the chemiluminescence assay further comprises: a driver connected to the rotating body; the driver is used for driving the rotating body to rotate.
Drawings
Fig. 1 is a schematic view of a light-shielding structure for detecting light signals according to an embodiment of the present invention;
FIG. 2 is a schematic half-sectional view of a light shielding structure for optical signal detection shown in FIG. 1;
FIG. 3 is a half-sectional view of another view of the light shielding structure for optical signal detection shown in FIG. 2;
FIG. 4 is a partial schematic view of a light-shielding structure for detecting light signals shown in FIG. 3;
fig. 5 is another implementation manner of the cover plate and the rotating body in the light-shielding structure for optical signal detection shown in fig. 4;
fig. 6 is another implementation manner of the cover plate and the rotating body in the light shielding structure for optical signal detection shown in fig. 4;
FIG. 7 is a partial schematic view of a light-shielding structure for optical signal detection shown in FIG. 1;
fig. 8 is a schematic view of the cover plate in the light shielding structure for detecting optical signals shown in fig. 1.
The meaning of the reference symbols in the drawings is:
100-a light-shielding structure for optical signal detection;
10-base, 11-containing groove;
20-a rotating body, 21-a first shading part, 22-a cup hole and 221-a detection port;
30-cover plate, 31-second shade, 311-gap, 32-orifice;
40-driver, 41-motor, 42-synchronous belt;
50-photosensitive device.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 to 8, it is a light shielding structure 100 for detecting optical signals according to an embodiment of the present invention.
As shown in fig. 1 and 7, the light-shielding structure 100 for detecting light signals includes: a base 10, a rotating body 20 pivoting the base 10, and a cover 30 provided toward the rotating body 20.
As shown in fig. 2, 3 and 7, the base 10 is provided with a housing groove 11 for housing the rotating body 20. In this embodiment, the base 10 is further provided with a mounting hole (not shown) for mounting the photosensor 50. The cover plate 30 covers the opening of the receiving groove 11. The base 10 can receive the rotator 20 and cooperate with the cover 30 to construct a dark room for optical signal detection.
Further, the cover 30 may be detachably coupled to the base 10 or hinged to the base 10 for convenience of operation.
In addition, the base 10 shown in the present embodiment is a U-shaped structure that is engaged with the rotating body 20, and may be in many variations as long as it is engaged with the rotating body 20, for example, the photosensor may be installed in the internal structure of the base 10, and the detection port faces inward, and may be disassembled into a plurality of parts.
As shown in fig. 2, 3 and 7, the rotating body 20 is provided with a first shade 21. The rotating body 20 is provided with at least one cup hole 22. The cup hole 22 is provided with a detection port 221. The detection port 221 is used as a signal input port for the photosensor 50. In the present embodiment, the first light shielding member is a circular ring structure disposed around the rotation axis of the rotating body 20. The cup hole 22 is located on the first shade 21. In other embodiments, the cup hole 22 may be located outside the first shade 21. Further, the specific position of the detection port 221 varies depending on the mounting position of the photosensor element (also corresponding to the position of the mounting hole). For example, in the present embodiment, the detection port 221 is located on the side of the cup hole 22 away from the rotation axis of the rotating body 20 and is disposed inward. In other embodiments, the detection port 221 may be disposed on a side of the cup hole 22 close to the rotation axis of the rotating body 20 and directed outward.
The cup hole 22 is used to accommodate an object for photoelectric detection, such as a reaction vessel. In this example, the reaction vessel is not drawn. In this embodiment, the number of the cup holes 22 is three, and in other embodiments, the number of the cup holes 22 may be one, or two, or four, or more, and the larger the number of the cup holes 22, the more stations may be provided, which is beneficial to improving the processing speed of the apparatus. In operation, the cup hole 22 rotates along with the rotation of the rotating body 20, and when the cup hole 22 rotates to the detection end of the photosensitive device 50, the detection port 221 on the sidewall of the cup hole 22 allows the detection end of the photosensitive device 50 to detect the optical signal generated by the reactant in the reaction container.
As shown in fig. 2, 3 and 8, the cover plate 30 is provided with a second light shielding member 31. The second light-shielding member 31 and the first light-shielding member 21 are mutually matched to form an annular structure for shielding light, and a gap 311 is formed at the joint of the second light-shielding member 31 and the first light-shielding member 21. The detection port 221 is located outside the first light-shielding member 21 and the second light-shielding member 31. The cover plate 30 is provided with at least one aperture 32. The projection of the orifice 32 in the direction of the rotation axis of the rotating body 20 is located on the rotation locus of the cup hole 22. The aperture 32 is offset from the mounting hole. In the present embodiment, the second light shielding member 31 is a circular ring structure disposed around the rotating shaft. An aperture 32 is provided opposite the cup hole 22, which in this embodiment is located in the second shade 31. Likewise, in other embodiments, the aperture 32 may be located outside the second shade 31.
As shown in fig. 3, in the present embodiment, the first light shielding member 21 is a convex ring, and the second light shielding member 31 is a concave groove. In other embodiments, the first light shielding member 21 may be a groove, and the second light shielding member 31 may be a convex ring. In other embodiments, as shown in fig. 5, the first light shielding member 21 and the second light shielding member 31 may be both convex rings and sleeved with each other.
In addition, in the present embodiment, the number of the first light-shielding members 21 is plural and is a concentric structure disposed with the rotation shaft of the rotating body 20 as the center, and the number of the first light-shielding members 21 is inversely proportional to the diameter of the cover plate 30. Similarly, in the present embodiment, the number of the second light-shielding members 31 may also be a plurality and a concentric structure disposed around the rotation axis of the rotating body 20, and the number of the second light-shielding members 31 is inversely proportional to the diameter of the cover plate 30. That is, as the diameter of the cover 30 is reduced, the number of the first light-shielding members 21 and the second light-shielding members 31 is increased, thereby improving the blocking capability of the light propagating in a straight line. It is to be understood that in other embodiments, only one first light-shielding member 21 and one second light-shielding member 31 may be provided as shown in fig. 4.
Considering that there is diffuse reflection when light is incident to the gap 311 at the connection of the first light-shielding member 21 and the second light-shielding member 31, the width of the gap 311 is less than 1mm in the present embodiment. Setting the gap 311 between the first light-shielding member 21 and the second light-shielding member 31 in a range of not more than 1mm can reduce the probability that light is incident on the detection end of the photosensor device 50 by diffuse reflection or the like.
In addition, in the present embodiment, the surface of the upper cover on which the first light-shielding member 21 is provided and the surface of the rotating body 20 on which the second light-shielding member 31 is provided may be provided with a weak light treatment layer. The weak light treatment layer serves to weaken the ability of light to diffuse reflection between the first light-shielding member 21 and the second light-shielding member 31.
Further, the weak light processing layer may be a blackened layer or a matte oxide layer.
The opening 32 is used for operating the cup hole 22 of the rotating body 20, such as putting in or taking out a reaction vessel, such as adding a reaction solution to the reaction vessel or sucking off the reaction solution.
In the present embodiment, the number of the openings 32 on the cover plate 30 is two, and in other embodiments, the number of the openings 32 may also be three, four or more, or one. The openings 32 are used for operating the cup holes 22 of the rotating body 20, such as placing or taking out reaction cups, for example, adding reaction liquid into the reaction cups or sucking reaction liquid, and the like, so that the more the number of the openings 32 is, the more the positions of the openings 22 can be corresponded, and the work efficiency of the equipment can be improved.
As shown in fig. 1, fig. 2 and fig. 7, in the present embodiment, the light-shielding structure for chemiluminescence measurement may further include: a driver 40 connected to the rotating body 20. The driver 40 is used for driving the rotating body 20 to rotate.
Further, as shown in fig. 2 and 7, the driver 40 may further include: and a motor 41 disposed outside the base 10, wherein the motor 41 is connected to the rotation shaft of the rotation body 20 through a timing belt 42 to rotate the rotation body 20. In other embodiments, the motor 41 can be directly connected to the rotating shaft of the rotating body 20 or driven by a gear.
In the above-described light-shielding structure for chemiluminescence measurement, the base 10, the rotary body 20, and the cover 30 constitute a dark room for detecting an optical signal. An annular structure of the first light-shielding member 21 and the second light-shielding member 31 for shielding light is provided between the cover plate 30 and the rotating body 20, and the aperture 32 in the cover plate 30 is provided to be offset from the mounting hole for mounting the photosensor 50. When external light is incident into the aperture 32 of the cover plate 30 and into the cup hole 22 of the rotating body 20, the light that is linearly propagated is blocked by the ring structure constructed between the cover plate 30 and the rotating body 20 based on the principle of the linear propagation of the light, so that the light is difficult to be incident to the photosensor 50 at the detection port 221, thereby establishing a good darkroom environment for the detection of the photosensor 50. In addition, the gap 311 is provided at the connection between the first light-shielding member 21 and the second light-shielding member 31, so that the rotating body 20 can be surely rotated with respect to the cover 30. In addition, the cup hole 22 can be kept in a normally open state, so that the accommodating groove 11 of the base 10 is kept communicated with the external environment, and the problem of difficult heat dissipation caused by complete sealing is avoided. Above-mentioned design, through the annular structure that is used for shielding light that sets up between apron 30 and the rotator 20, can solve the problem of the light leak of darkroom effectively, its simple structure reduces the influence to equipment.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a light-resistant structure that light signal detected which characterized in that: the method comprises the following steps:
a base; the base is provided with a containing groove;
a rotating body pivotally connected to the base; the rotating body is accommodated in the accommodating groove; the rotating body is provided with a first shading piece; the rotating body is provided with at least one cup hole; the cup hole is provided with a detection port serving as a signal input port of the photosensitive device; and
a cover plate disposed toward the rotating body; the cover plate covers the opening of the accommodating groove; the cover plate is provided with a second shading piece; the second shading part and the first shading part are mutually matched to form an annular structure for shading light, and a gap is arranged at the joint of the second shading part and the first shading part; the detection port is positioned at the outer sides of the first shading piece and the second shading piece; the cover plate is provided with at least one aperture.
2. The light-shielding structure for detecting optical signals according to claim 1, wherein the first light-shielding member is a convex ring, and the second light-shielding member is a concave groove; or the first shading piece is a groove, and the second shading piece is a convex ring.
3. The light-shielding structure for detecting optical signals according to claim 1, wherein the first light-shielding member and the second light-shielding member are both convex rings and are sleeved with each other.
4. A light-shielding structure for detecting optical signals according to claim 1, wherein the width of the gap is not greater than 1 mm.
5. The light-shielding structure for detecting optical signals according to claim 1, wherein the cover plate is detachably connected to the base or hinged to the base.
6. A light shielding structure for detecting optical signals according to claim 1, wherein the number of the first light shielding members is plural and is a concentric structure disposed around the rotation axis of the rotating body, and the number of the first light shielding members is inversely proportional to the diameter of the cover plate.
7. A light shielding structure for detecting optical signals according to claim 1, wherein the number of the second light shielding members is plural and is a concentric structure disposed around the rotation axis of the rotating body, and the number of the second light shielding members is inversely proportional to the diameter of the cover plate.
8. A light-shielding structure for detecting optical signals according to claim 1, wherein a weak light treatment layer is disposed on both the surface of the cover plate on which the first light-shielding member is disposed and the surface of the rotating body on which the second light-shielding member is disposed.
9. The light-shielding structure for detecting optical signals according to claim 8, wherein the weak light processing layer is a black layer or a matte oxide layer.
10. The light-shielding structure for detecting optical signals according to claim 1, further comprising: a driver connected to the rotating body; the driver is used for driving the rotating body to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920686438.8U CN210465236U (en) | 2019-05-14 | 2019-05-14 | Light-shading structure for optical signal detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920686438.8U CN210465236U (en) | 2019-05-14 | 2019-05-14 | Light-shading structure for optical signal detection |
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| CN210465236U true CN210465236U (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006825A (en) * | 2019-05-14 | 2019-07-12 | 深圳市亚辉龙生物科技股份有限公司 | Optical signal detecting is protected from light structure |
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2019
- 2019-05-14 CN CN201920686438.8U patent/CN210465236U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006825A (en) * | 2019-05-14 | 2019-07-12 | 深圳市亚辉龙生物科技股份有限公司 | Optical signal detecting is protected from light structure |
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