CN215910327U

CN215910327U - Biochemical detection instrument light source light equalizing device and biochemical detection instrument

Info

Publication number: CN215910327U
Application number: CN202122432923.2U
Authority: CN
Inventors: 杨帆; 唐大伟; 王品
Original assignee: Qingdao Hightop Biotech Co ltd
Current assignee: Qingdao Hightop Biotech Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-02-25
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a light source light equalizing device of a biochemical detection instrument, which comprises a lamp bead, a lamp holder, a lamp shade rear cover, a lens group, a lens mounting cylinder, a light guide optical fiber group and an optical fiber mounting cylinder seat, wherein the lamp bead is detachably mounted on the lamp holder, the lamp holder is arranged on the lamp shade rear cover, the lamp shade rear cover is fixedly connected with the lens mounting cylinder, the lens group is arranged in the lens mounting cylinder, the optical fiber mounting cylinder seat is fixedly connected with the lens mounting cylinder, the light guide optical fiber group is arranged in the optical fiber mounting cylinder seat, and the lens group and the light guide optical fiber group are sequentially arranged in the light irradiation direction along the lamp bead. The utility model also discloses a biochemical detection instrument. According to the light source light equalizing device of the biochemical detection instrument and the biochemical detection instrument, the lens group and the light guide optical fiber module are used in the light path, so that a light source with high and stable illumination and uniformity is provided at the tail end of the light source output system, and the detection stability of the biochemical detection instrument is improved.

Description

Biochemical detection instrument light source light equalizing device and biochemical detection instrument

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a light source light equalizing device of a biochemical detection instrument and the biochemical detection instrument.

Background

Biochemical appearance detection device uses many lenses focus to the facula or uses the slit to control printing opacity area and shape usually, the form of using many lenses focus can be higher to the specification parameter and the assembly precision requirement of light source lamp pearl, the subsequent maintenance replacement operation degree of difficulty of lamp pearl is great simultaneously, use slit control printing opacity shape can be because the lamp pearl is dispersed and the reason that printing opacity area is little, weaken actual available power, thereby need improve the power of lamp pearl, make the detection face reach ideal illuminance, this makes system calorific capacity big, the heat dissipation burden is heavy and then need increase whole module volume, illuminance decline is obvious after high power lamp pearl light decay, be unfavorable for the stability and the detection precision of instrument.

Therefore, the prior art needs to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the background art and provides a light source light equalizing device of a biochemical detection instrument and the biochemical detection instrument. The light source light equalizing device and the biochemical detecting instrument provided by the utility model can ensure that the illumination of the light source detected by the instrument is high and uniform, thereby improving the detection precision and stability of the biochemical detecting instrument.

The technical purpose of the utility model is realized by the following technical scheme:

the utility model provides a biochemical detecting instrument light source device of homogenizing light, lid, battery of lens, lens installation section of thick bamboo, leaded light optic fibre group and optic fibre installation bobbin base behind lamp pearl, lamp pearl detachably installs on the lamp stand, the lamp stand sets up and covers behind the lamp shade, lid and lens installation section of thick bamboo fixed connection behind the lamp shade, the battery of lens sets up in lens installation section of thick bamboo, optic fibre installation bobbin base and lens installation section of thick bamboo fixed connection, leaded light optic fibre group sets up in optic fibre installation bobbin base, battery of lens and leaded light optic fibre group set gradually in the light irradiation direction along the lamp pearl, battery of lens and leaded light optic fibre group set up on same optical axis.

The light source light equalizing device of the biochemical detection instrument further comprises a concave reflector, the lamp holder penetrates through the concave reflector to fix the concave reflector to the lampshade and then covers the lampshade, and the concave reflector and the lamp beads are arranged on the same optical axis.

According to the light source light equalizing device of the biochemical detection instrument, the lamp beads adopt halogen lamp beads, and the halogen lamp beads are arranged at the focus of the concave reflector.

The light source light equalizing device for the biochemical detection instrument comprises a lens group and a lens group, wherein the lens group comprises at least one lens sheet, and the lens sheet is any one of a biconvex lens, a plano-convex lens or a concave-convex lens.

The light source light equalizing device for the biochemical detection instrument comprises a lens group and a lens group, wherein the lens group comprises two lens sheets which are arranged in the same direction or in different directions.

According to the light source light equalizing device of the biochemical detection instrument, the lens mounting ring is fixedly arranged on the inner wall of the lens mounting cylinder, and the lens sheet is mounted on the lens mounting ring.

The light source light equalizing device of the biochemical detection instrument further comprises a heat dissipation system, wherein the heat dissipation system comprises heat dissipation fins and a heat dissipation fan for accelerating heat dissipation of the heat dissipation fins, and the heat dissipation fins are arranged on the outer walls of the lampshade rear cover and the lens installation cylinder.

According to the light source light equalizing device of the biochemical detection instrument, the lamp holder is connected with the rear cover of the lamp shade through threads.

Based on the same conception, the utility model also provides a biochemical detection instrument, which comprises a cuvette, a detector and the light source light equalizing device of the biochemical detection instrument, wherein the cuvette is arranged on the light-emitting end face of the light guide optical fiber group, the effective inspection area of the cuvette is matched with the light-passing area of the light guide optical fiber group, and the detector is arranged on one side of the cuvette, which is far away from the light-emitting end face of the light guide optical fiber group.

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

1. according to the light source light equalizing device of the biochemical detection instrument, the lamp beads are arranged at the focus of the concave reflector, light rays emitted towards the lamp holder are refracted, and then are partially emitted towards the lens direction in parallel, partial light sources are emitted towards the lens direction in the same way when the emission angles are reduced, and the light source loss is reduced by the concave reflector so that the divergence angles are reduced; then, the light rays are converged by the lens group, and are converged in a plane with the area smaller than that of the front end face of the optical fiber at the plane position of the front end of the optical fiber, more than 90% of the converged light enters the optical fiber for conduction, and the light loss is reduced; light constantly refracts in optic fibre and finally reaches optic fibre rear end face, and the rear end face is worn out to light, forms the even illumination light the same with rear end shape area, and the cell is closer with optic fibre end distance simultaneously, reduces the light loss that light conduction produced in the air equally, and through the analysis of software, peripheral light degree of consistency descends obviously, and the central zone is undulant less, and effective detection position is in light source central zone, and the light source that the light source can fine assurance detect stability and the degree of consistency.

2. According to the biochemical detection instrument provided by the utility model, on one hand, the light source is arranged in a uniform light mode, so that the energy consumption of the system light source is reduced, and the space requirement of a small biochemical detection instrument can be met; on the other hand, the structure is simple, the universality is strong, and the application range is wide.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following will briefly introduce embodiments or drawings used in the description of the prior art, and it is obvious that the following description is only one embodiment of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts.

FIG. 1 is a schematic top view of a biochemical detecting apparatus according to the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic diagram of an optical path of a light source light-equalizing device of a biochemical detecting apparatus according to the present invention;

fig. 4 is a radial plot of the B location in fig. 3, with the ordinate being the peak irradiance in units: watts/cm²；

Fig. 5 is a radial plot of the C location in fig. 3, with the ordinate being the peak irradiance in units: watts/cm²；

Fig. 6 is a radial plot of the D location in fig. 3, with the ordinate being the peak irradiance in units: watts/cm²；

Fig. 7 is a radial plot of the E position in fig. 3, with the ordinate being the peak irradiance in: watts/cm²。

In the figure, 1-concave reflector, 2-lamp bead, 3-lamp holder, 4-lampshade rear cover, 5-lens group, 501-lens sheet, 6-lens installation cylinder, 7-lens installation ring, 8-light guide optical fiber group, 9-optical fiber installation cylinder seat, 901-convergence part, 10-heat dissipation fin, 11-colorimetric cup and 12-detector.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" 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.

Example 1:

referring to fig. 1-2, a light source light equalizing device for a biochemical detecting instrument comprises a lamp bead 2, a lamp holder 3, a lampshade rear cover 4, a lens group 5, a lens mounting tube 6, a light guide fiber group 8 and a fiber mounting tube base 9, wherein the lamp bead 2 is detachably mounted on the lamp holder 3, the lamp holder 3 is arranged on the lampshade rear cover 4, the lampshade rear cover 4 is fixedly connected with the lens mounting tube 6, the lens group 5 is arranged in the lens mounting tube 6, the fiber mounting tube base 9 is fixedly connected with the lens mounting tube 6, the light guide fiber group 8 is arranged in the fiber mounting tube base 9, the lens group 5 and the light guide fiber group 8 are sequentially arranged in a light irradiation direction along the lamp bead 2, and the lamp bead 2, the lens group 5 and the light guide fiber group 8 are arranged on the same optical axis.

Preferably, still include concave reflector 1, lamp stand 3 runs through concave reflector 1 and fixes concave reflector 1 to lamp shade back cover 4 on, concave reflector 1 sets up on same optical axis with lamp pearl 2.

Preferably, the lens group 5 includes at least one lens sheet 501, and the lens sheet 501 is any one of a lenticular lens, a plano-convex lens, or a meniscus lens.

Preferably, the lens group 5 includes two lens sheets 501, and the two lens sheets 501 are disposed in the same direction or in different directions.

Preferably, a lens mounting ring 7 is fixedly provided on the inner wall of the lens mounting tube 6, and the lens sheet 501 is mounted on the lens mounting ring 7.

Preferably, the lamp further comprises a heat dissipation system, the heat dissipation system comprises a heat dissipation fin 10 and a heat dissipation fan (not shown in the figure) for accelerating heat dissipation of the heat dissipation fin 10, and the heat dissipation fin 10 is disposed on the outer walls of the lampshade rear cover 4 and the lens mounting barrel 6.

Preferably, the lamp holder 3 is connected with the lampshade rear cover 4 through threads.

Referring to fig. 3, the optical path principle of the present embodiment is as follows: the lamp pearl 2 is as partial light that the light source launches and the light that reflects through concave surface reflector 1 assembles at the portion 901 that assembles through lens group 5, and the light guide fiber group 8 is received and is assembled the light, forms the terminal light source of stable equipartition after the transmission of the high performance single core fiber of the low refraction cladding of high refraction inner core, and is concrete, forms the terminal light source of stable equipartition after the transmission of the high performance single core fiber of the inner core that the material is pure quartz glass refracting index for 1.4457 and the cladding that the refracting index is 1.4378. The terminal light source that this embodiment formed is stable, and the replaceability of lamp pearl 2 is high to be applicable to the detecting system of different wavelength, simultaneously according to the shape demand of different cell, adjustment optic fibre satisfies the design needs, and the light loss rate is low moreover, selects for use the lamp pearl 2 that low-power calorific capacity is little to reduce light source part volume, and the preferred lamp pearl 2 of this embodiment adopts halogen lamp pearl 2, specifically is 20W's osram halogen lamp for the bulb, halogen lamp pearl 2 sets up in concave reflector 1's focus department, can be applicable to various small-size detecting instrument.

Referring to fig. 4-7, wherein fig. 4 is a radial view of the position B in fig. 3, which is a radial view of the initial light source; fig. 5 is a radial diagram of the position C in fig. 3, i.e. the radial diagram is the radial diagram of the lamp bead 2 focused by the lens assembly 5 without passing through the light guide fiber assembly 8; FIG. 6 is a radial diagram of the position D in FIG. 3, namely the radial diagram after the lamp bead 2 is focused by the lens assembly 5 and conducted by the light guide fiber assembly 8; fig. 7 is an irradiation diagram of the position E in fig. 3, that is, an irradiation diagram of the light source at the end of the light guide fiber group 8 reaching the detection position through air conduction. This embodiment uses lens group 5 and leaded light optic fibre group 8 for 2 output system's of lamp pearl end provides stable and even light source, can see through figure 6 and figure 7, and the light source is even and pass and detect that whole decay is less behind the position, and only the edge disperses obviously, and the effective inspection area of cell 11 is in the light source middle part, and the edge is dispersed light and is influenced very little to the inspection. The light source light equalizing device for the biochemical detection instrument provided by the embodiment has the advantages of uniform light source distribution and good light equalizing effect.

In addition, through 8 internal refractions in the leaded light fiber group, the even light device of biochemical detecting instrument light source that this embodiment provided forms the equipartition light source at the end, and its advantage lies in:

firstly, the light loss of the whole system is low, a low light source can be used for achieving ideal rear-end illumination, and the light loss of the whole system is below 30%;

after the second and the rear ends are uniformly lighted, no obvious wave crest or wave trough exists in the brightness of the detection position, so that the detection error is reduced, and the sensitivity of the machine is improved;

third, 2 powers of lamp pearl are the same, and the illuminance that this biochemical detecting instrument light source light equalizing device provided is far higher than inhomogeneous light system, and rear end signal pickup element can use lower signal amplification when illuminance is high, has reduced system noise, has improved the detection precision.

In a word, the even light device of biochemical detecting instrument light source of this embodiment provides the light source that an even illuminance is high, and the light loss of whole light path is little, so same power lamp pearl 2, this device end can provide the higher equipartition light source of luminous intensity, and under the same light source condition in end, 2 little calorific capacity of the lamp pearl power that this device used are little for the whole small of module has more adjustable spaces.

Example 2:

the embodiment provides a biochemical detection instrument, including cell 11, detector 12 and the light source uniform light device of the biochemical detection instrument as in embodiment 1, the cell 11 is disposed on the light-emitting end face of the light guide fiber group 8, the effective test area of the cell 11 matches with the terminal light-emitting end face of the light guide fiber group 8, and the detector 12 is disposed on one side of the cell 11 away from the light-emitting end face of the light guide fiber group 8. The effective detection area of the colorimetric cup 11 is 10% smaller than the area of the end face of the end of the light guide fiber group 8, and the two are matched, so that the influence of uneven edge brightness caused by edge divergence of the light source edge on detection can be reduced.

The biochemical detection instrument provided by the embodiment uses the high-transmittance lens group 5 and the high-transmittance light guide optical fiber group 8, so that the system light source loss is reduced, and the power of the primary light source lamp bead is reduced. The high-transmittance lens group refers to a lens group 5 with a transmittance of 92% to 99%, and a lens sheet 501 in the high-transmittance lens group is coated with an antireflection film according to a waveband, so that the transmittance of the lens group 5 in the waveband of 400 nm to 700nm is greater than 99%, and the transmittance of the lens group outside the waveband of 340nm is greater than 92%. The high-light-transmission light guide optical fiber group referred by the utility model refers to the light guide optical fiber group 8 with the light transmittance of 92-99% and the light attenuation at the wavelength of 1000nm less than or equal to 1 dB/km. Specifically, this embodiment chooses for use the light decay to be less than 5% power and equals or is less than 20W's halogen lamp pearl, has reduced the size of lamp stand 3 and heat dissipation fin 10, can satisfy small-size biochemical detecting instrument space requirement.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a biochemical detecting instrument light source device that gives off light, its characterized in that, including lamp pearl (2), lamp stand (3), lamp shade back lid (4), battery of lens (5), lens installation section of thick bamboo (6), leaded light optic fibre group (8) and optic fibre installation bobbin base (9), lamp pearl (2) detachably installs on lamp stand (3), lamp stand (3) set up on lamp shade back lid (4), lamp shade back lid (4) and lens installation section of thick bamboo (6) fixed connection, battery of lens (5) set up in lens installation section of thick bamboo (6), optic fibre installation bobbin base (9) and lens installation section of thick bamboo (6) fixed connection, leaded light optic fibre group (8) set up in optic fibre installation bobbin base (9), battery of lens (5) and leaded light optic fibre group (8) set gradually in the light irradiation direction along lamp pearl (2), lamp pearl (2), The lens group (5) and the light guide optical fiber group (8) are arranged on the same optical axis.

2. The light source light equalizing device of the biochemical detecting instrument according to claim 1, further comprising a concave reflector (1), wherein the lamp holder (3) penetrates through the concave reflector (1) to fix the concave reflector (1) to the lampshade rear cover (4), and the concave reflector (1) and the lamp beads (2) are arranged on the same optical axis.

3. The light source light equalizing device of the biochemical detecting instrument according to claim 2, wherein the lamp beads (2) are halogen lamp beads (2), and the halogen lamp beads (2) are disposed at a focus of the concave reflecting mirror (1).

4. A biochemical detection instrument light source light equalizing device according to claim 3, wherein the lens group (5) comprises at least one lens sheet (501), and the lens sheet (501) is any one of a lenticular lens, a plano-convex lens or a concave-convex lens.

5. A biochemical detection instrument light source light equalizing device according to claim 4, characterized in that said lens set (5) comprises two lens sheets (501), and two lens sheets (501) are arranged in the same direction or in different directions.

6. The biochemical detection instrument light source light equalizing device according to claim 4, wherein a lens mounting ring (7) is fixedly disposed on an inner wall of the lens mounting cylinder (6), and the lens sheet (501) is mounted on the lens mounting ring (7).

7. The light source light equalizing device of the biochemical detecting instrument according to claim 3, further comprising a heat dissipating system, wherein the heat dissipating system comprises heat dissipating fins (10) and a heat dissipating fan for accelerating heat dissipation of the heat dissipating fins (10), and the heat dissipating fins (10) are disposed on the outer walls of the lampshade rear cover (4) and the lens mounting barrel (6).

8. The biochemical detecting instrument light source light equalizing device according to claim 1, wherein the lamp holder (3) is connected with the lampshade rear cover (4) through a screw thread.

9. A biochemical detection instrument, comprising a cuvette (11), a detector (12) and the light source light equalizing device according to any one of claims 1 to 8, wherein the cuvette (11) is disposed on the light exit end surface of the light guide fiber set (8), the effective inspection area of the cuvette (11) is matched with the light transmission area of the light guide fiber set (8), and the detector (12) is disposed on the side of the cuvette (11) away from the light exit end surface of the light guide fiber set (8).