KR20090088667A - Optic detecting method of urinalysis strip and the optic detecting module using it's - Google Patents

Abstract

An optical sensor of a sample test strip and a photodetection module using the same are provided to manufacture a plurality of emitting element and light receiving element with one modular. An optical sensor of a sample test strip comprises followings. A block of light non-transmitting material and a light receiving element are successively arranged on a path of an optical signal. The optical signal of a sample test strip(2) is detected by collecting the optical signal incoming through a light guide with the light receiving element. The optical signal is dispersed from a reaction pad after being irradiated from an emitting element. The block of the light non-transmitting material comprises a light path. The inside diameter of the light path formed in the block is smaller than the size of the reaction pad. The light path is arranged to a central axis of the reaction pad.

Description

Optical detecting method of urinalysis strip and the optic detecting module using it's}

The present invention relates to a light detecting method of a sample inspection strip and an optical detection module using the same. More specifically, the present invention relates to a light detection device using the same. By sequentially placing light-transmissive blocks and light-receiving elements with optical paths, it is possible to increase the detection accuracy of spectroscopic spectral distribution characteristics of the sample even with a simple configuration without using an optical system, and to reduce the manufacturing cost of the optical detection module. The present invention relates to a light detecting method of a sample inspection strip and a light detecting module using the same.

Spectroscopic distribution characterization is a method of analyzing the emission spectrum or absorption spectrum of a material to determine the type and amount of elements or compounds of the trace elements contained in it, which is currently used in various fields including astrophysics.

In addition, unlike the general chemical analysis, the distribution characteristic analysis of spectroscopic spectra has advantages of easy operation for analysis and short operation time. In addition, accurate analysis can be performed with a small amount of sample.

On the other hand, in order to diagnose the physical condition or diseases of the body, it is desirable to carry out regular tests steadily, and the detailed examination of the organs of the body is expensive and time-consuming, so usually blood tests or urine tests are usually performed. It is common to carry out regularly.

In particular, urine is the end product of protein metabolism, and it contains metabolites such as urea, uric acid, creatine, and amino acids, as well as various organic salts, inorganic salts and detoxification substances, and biological substances containing trace vitamins, hormones and enzymes. As one of them has a feature that can be easily collected without causing pain to the patient, it is used as a basic sample for the diagnosis of physical condition or disease of the body.

Herein, when the above-described spectroscopic spectral distribution characteristic analysis is applied to urinalysis, a small amount of sample can be easily and accurately examined in a short time to check the specific gravity, occult state, and acidity of urine related to the health state and disease of the body, Proteins, nitrites, leukocytes, eurobilinogen, glucose, bilirubin, ketones, and the like can be detected, and the spectroscopic spectral distribution characteristic analysis is widely used for analysis of biological material samples.

Spectroscopic spectral distribution characteristic detection system for the analysis of a sample including such a biological material generally has a predetermined length of the test strips with a plurality of reaction pads containing a reagent for analysis, and the sample test Optical detection device for detecting the spectroscopic spectral distribution characteristics of the reaction pad of the strip for the use, a moving mechanism for transporting the specimen inspection strip, and spectroscopic spectral distribution characteristics by receiving the optical signal information from the optical detection device On the other hand, the controller is configured to control the operation of the light detecting device and the moving mechanism.

Here, the light detecting device includes a light emitting device for irradiating light with the reaction pad of the sample inspection strip, and a light receiving element for detecting light dispersed by the reaction pad of the sample inspection strip. As a light source, a light source such as a white light source or a light emitting diode (LED) that irradiates a wavelength in each wavelength band is used, and as a light receiving element, a photodiode, a phototransistor, or the like is used.

As a invention in which a spectral spectrum detection system for analyzing a sample formed as described above is applied to a test of a biological material, US Patent No. US 6582659 entitled "EQUIPMENT FOR CLINICAL EXAMINATION" is disclosed, and a spectral spectrum detection system for analyzing a sample The invention applied to the urinalysis is registered in the Republic of Korea Patent Publication No. 0129488 "Urine Testing and Reading Automation System", Registration No. 10-0413120 "Urine Analysis System Using Optical Sensor (CIS)," No. 10-0444932, "Small urine analysis system" and the like.

The conventional inventions described above test a sample test strip to which a plurality of reaction pads containing different kinds of reagents are attached.

Here, US Patent No. US 6582659 "EQUIPMENT FOR CLINICAL EXAMINATION" and Republic of Korea Patent Registration No. 10-0413120 "Urine analysis system using a light sensor (CIS)" and Registration No. 10-0444932 "Small yo As the optical detection device is composed of a light emitting element and a light receiving element in a single optical module, a light strip for sample inspection is emitted into a single optical module by using a motor mechanism that controls a moving distance such as a step motor or a servo motor. It was necessary to move to an optical detection device consisting of a device and a light receiving device, and to provide precise position control by providing a position sensor so that the reaction pads of the sample inspection strips were matched with the position of a single optical module sequentially. A separate program was needed. Accordingly, the manufacturing cost of the spectral spectrum detection system for the analysis of the sample has been increased, and the configuration of the spectral spectrum detection system for the analysis of the sample has been complicated, thus making it difficult to maintain the system.

On the other hand, the Republic of Korea Patent Publication No. 0129488 "Urine Testing and Reading Automation System" is different from the above, the light detection module consisting of a light emitting element and a light receiving element is the same number or extended as the number of reaction pads attached to the sample test strip According to the number, the analysis of the sample could be performed by only one time setting the sample test strip on the tray (used for strip transfer in other equipment), but the sample test was also performed in the "urine test and reading automation system". Composed of motors and solenoids for transporting and fixing the strips, the composition of the spectroscopic spectral distribution detection system for the analysis of the sample is complicated, and the optical unit consisting of the light emitting element and the light receiving element The detection module and the system frame are attached separately so that the system Maintenance issues are difficult to follow was still there.

Here, US Patent No. US 6582659 "EQUIPMENT FOR CLINICAL EXAMINATION" is to install a separate optical system between the light emitting device and the sample test strip so that the light irradiated from the light emitting device is accurately incident to the main part of the reaction pad of the sample test strip The generation of reflected light to parts other than the reaction pad is minimized, and by using the diffuse light illumination method, the light dispersed from the reaction pad of the sample inspection strip is focused and transmitted to the light receiving device so that an optical signal is detected.

However, US Patent No. US 6582659 "EQUIPMENT FOR CLINICAL EXAMINATION" is an optical detection device using an optical system and a diffused light illumination method, and the configuration of the spectral spectrum detection system is complicated, and maintenance is cumbersome. The cost has increased.

In addition, the Korean patent application "the urine analysis system using a light sensor (CIS)" is a light sensor and a light receiving element that constitutes a light detection device is integrated, the light source and the light detection sensor is an integrated color sensor Arrays (CIS) were used as photodetectors.

The color sensor array (CIS) is irradiated with the R, G, B light source embedded in the reaction pad of the test strip, and the contact image sensor which is a light detection sensor built-in again the light dispersed from the reaction pad ( contact image sensor).

Such a "urine analysis system using a light sensor (CIS)" is a color sensor array (CIS) consisting of a light source and a light detection sensor integrated as described above is used as a light detection device of the spectral spectrum detection system Although the configuration was simplified, the color sensor array (CIS) is a relatively expensive component, and the size of the CIS sensor is standardized to 21 cm or 12 cm, so that problems such as an increase in cost and a small size of the system remain. .

In addition, the "small urine analysis system" and "automatic urine test and readout system" is a light emitting device constituting a light detecting device using a light emitting diode, a light receiving device using a photodiode or a light receiving transistor, a light emitting device and a light receiving device Maintains a constant angle so as to obtain an optical signal dispersed from the reaction pad of the strip.

As described above, the "small urine analysis system" and the "urine test and readout automation system", as described above, constitute a light detection device as photons, simplifying the configuration of the spectral spectrum detection system and reducing the cost of constructing the system. Although there is an advantage of being reduced, it is simply a configuration in which the light receiving device receives light scattered from the reaction pad of the sample inspection strip irradiated from the light emitting device, so that the optical signal reflected from the surface of the reaction pad, the strip outside the reaction pad As unnecessary optical signals reflected from the surface are simultaneously transmitted to the light receiving device, there is a problem in that the accuracy of spectral spectrum detection is degraded.

That is, in the spectral spectrum detection system for analyzing a sample, the optical detection device is intended to detect the light scattered by a specific component of the sample infiltrated on the reaction pad, which is generated by an external element as described above. Also, the light receiving element detects the optical signal, and the accuracy of the spectral spectrum detection is reduced.

On the other hand, the "urine test and reading automation system" is an analog multiplexer for multiplexing the reflection coefficient detection signal by the light receiving element in order to solve the problem that the accuracy of the spectral spectrum detection by the optical detection device as described above is reduced; In addition, an optical signal processing device such as an amplifier and a filter unit for amplifying and filtering the output of the analog multiplexer, which complicates the construction of the spectral spectrum detection system and increases the cost of constructing the system.

Therefore, by developing an optical detection device capable of collectively analyzing a plurality of reaction pads attached to a sample inspection strip, the configuration of a conventional spectral spectral detection system is simplified, while the reaction attached to the sample inspection strip is developed. Accurate spectroscopic spectral distribution characteristic analysis can be achieved by receiving and detecting only the optical signal dispersed in the pad, and also for analyzing the spectroscopic spectral distribution characteristic using commercially available optical devices such as light emitting diodes and phototransistors rather than expensive optical systems. The simple and simple configuration of the system makes it easy to install and maintain, and the development of a technology for an optical detection device that reduces the cost of the system configuration is currently required.

Accordingly, the present invention improves such a problem of the prior art, and provides a new type of light detecting method for a specimen inspection strip and a light detecting module using the same that can enable a relatively high precision light detection without using an optical system. It is for the purpose of suggestion.

In addition, the present invention, unlike the prior art that applies the motor driving method to set the position of the transfer and reaction pad of the strip, even with only the configuration of the tray (base) for inserting the strip into the detection position (position where the optical detection module is installed) The light detection method of a new type of sample inspection strip can reduce the manufacturing and maintenance costs of a system such as a urine analyzer by making it possible to easily set the position of the strip and the reaction pad. It is an object to provide an optical detection module using the same.

In addition, the present invention allows a plurality of light emitting devices and light receiving devices to be manufactured in a single module form so that they can be applied to a sample inspection using a conventional strip having a plurality of reaction pads, and also relatively without using an optical system. The optical detection method of the new type of sample inspection strip and the optical detection module using the same enable high precision light detection, and easy to move the strip and position the reaction pad without using a driving device such as a motor. It is about.

According to a feature of the present invention for achieving the above object, the present invention is provided with a light emitting element and a light receiving element for detecting the spectroscopic distribution characteristics of the sample infiltrated on the reaction pad attached to the strip for sample inspection In the light detection method of the sample inspection strip, the light-transmissive block and the light-receiving element sequentially having an optical path on the path of the optical signal which is irradiated from the light emitting element to the reaction pad and then dispersed from the reaction pad The optical signal incident through the optical path is arranged to be received by the light receiving element, so that the optical signal of the sample inspection strip can be detected.

In the light detection method of the sample inspection strip according to the present invention, the optical path formed in the block has an inner diameter smaller than the size of the reaction pad, and is arranged to be parallel to the central axis of the reaction pad. do.

According to another object of the present invention for achieving the above object, the present invention is provided with a light emitting element and a light receiving element to detect the spectroscopic distribution characteristics of the sample infiltrated on the reaction pad attached to the strip for sample inspection An optical detection module of a test strip for sample, comprising: a fixed frame to which the light emitting element and the light receiving element are coupled; A block coupled to the fixed frame and installed at a front side of the light receiving element and formed of an optically nontransparent material; The block has an optical path incident on the optical path of the block by having an optical path formed on a path of an optical signal received from the light emitting device after being irradiated to the reaction pad from the light emitting device and received by the light receiving device. An arc is focused on the light receiving element.

In the optical detection module of the test strip according to the present invention as described above, the optical path of the block has an inner diameter smaller than the size of the reaction pad and is formed to be parallel to the central axis of the reaction pad.

In the optical detection module of the sample inspection strip according to the present invention, the block is formed in the upper surface of the concave groove communicating with the optical path, is in close contact with the surface of the fixed frame, the light receiving element is the concave groove It is embedded in the fixed frame is fixed to the light receiving element is characterized in that the optical signal is transmitted only to the optical path of the block.

In the light detection module of the sample inspection strip according to the present invention, the light emitting device is characterized in that it is disposed on both sides with the light receiving device in between.

According to another feature of the present invention for achieving the above object, the present invention, a plurality of light emitting elements and light receiving elements provided with a plurality of reaction pads attached to a sample test strip (strip) of the sample infiltrated An optical detection module of a sample inspection strip for detecting an optical distribution characteristic, comprising: a light emitting unit having a plurality of light emitting elements arranged in a row at predetermined intervals on a light emitting device PCB having a flat plate shape having a predetermined size; A light receiving unit in which a plurality of light receiving elements are arranged in a line at a predetermined interval on a light receiving element PCB having a flat plate shape having a predetermined size; A plurality of optical paths penetrated in the vertical direction are formed in a line at a predetermined interval in the horizontal direction, and a plurality of recessed grooves communicating with the optical path are formed on the upper surface in a row at a predetermined interval, the optical path of the optical path A block of light impermeable material formed on a bottom surface of the PCB fixing end inclined to both sides with a lower inlet in between; Including, the upper surface of the block is adhered to the PCB for the light receiving element is tightly attached to the recess of the light receiving element, the lower surface of the block is attached to the PCB for the light emitting element is fixed to the PCB fixed end The light emitting element is directed toward the pad of the sample inspection strip, and the optical path of the block connects the lower side of the center portion of the light receiving element and the upper side of the reaction pad center portion of the sample inspection strip to distribute the optical signal from the reaction pad. It is characterized in that only the component is delivered to the light receiving element.

In the optical detection module of the sample inspection strip according to the present invention, the block is formed with a plurality of air inlet holes on both sides in the width direction of the upper surface where the recess is formed to prevent the temperature rise of the block due to the heat generation of the light receiving element. It is characterized by that.

According to the optical detection method of the sample inspection strip and the optical detection module using the same according to the present invention, only a light signal component dispersed in the reaction pad by providing a block formed with an optical path between the light receiving element and the reaction pad of the sample inspection strip The accuracy of detecting the spectroscopic spectral distribution characteristic of the sample is increased by being guided to the optical path and transmitted to the light receiving element, and the manufacturing cost of the apparatus for detecting the optical signal is increased by providing a simple configuration without using a special optical system using a lens. Savings.

In addition, as a plurality of light emitting devices and light receiving devices are modularized to form a light detection module, a plurality of reaction pads attached to a strip for sample inspection can be collectively analyzed, and at the same time, spectral spectrum analysis can be performed using a light detection module. The configuration of the detection system is simplified so that it is not necessary to use a driving device such as a motor.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 6. On the other hand, in the drawings and detailed description showing and referring to the construction and operation that can be easily understood by those of ordinary skill in the art from the light detection method and a light detection module using the general sample inspection strips briefly or omitted. In particular, in the drawings and detailed description of the drawings, detailed descriptions and illustrations of specific technical configurations and operations of elements not directly related to technical features of the present invention are omitted, and only the technical configurations related to the present invention are briefly shown or Explained.

1 is a view for showing the technical idea of the light detection method of the test strip according to the invention, Figure 2 is a view showing a state in which the light is dispersed in the sample test strip, Figure 3 4 is a view illustrating a detection system in which a light detection module of a test strip according to the present invention is installed, and FIG. 4 is an overall perspective view of the light detection module of the test strip according to a preferred embodiment of the present invention, and FIG. Figure 6 is an overall cross-sectional view of the optical detection module of the test strip according to a preferred embodiment of the invention, Figure 6 is an exploded perspective view of the optical detection module of the test strip according to a preferred embodiment of the present invention, Figure 7 (a) 6 is a sectional view taken along the line AA of FIG. 6, and FIG. 7B is a sectional view taken along the line BB of FIG. 6.

The light detecting method of the sample inspection strip and the light detection module using the same according to the present invention include a reaction pad (3) having a light emitting device (20) and a light receiving device (40) attached to a sample strip (2). By detecting the optical signal dispersed from the ()) is to measure the spectroscopic distribution characteristics of the sample infiltrated into the reaction pad (3).

Here, the sample test strip 2 of the present invention may be coated with various kinds of chemicals, biological materials, etc., the biological material may be applied with urine (blood), blood, saliva and the like.

In the light detecting method of the sample inspection strip according to the present invention, as shown in FIG. 1, the light is radiated from the light emitting device 20 to the reaction pad 3 of the sample inspection strip 2, and the light is distributed from the reaction pad 3. The block 80 and the light receiving element 40 having the optical path 82 are sequentially arranged.

As the block 80 is made of an optically transparent material, light is incident only through the optical path 82, and only an optical signal passing through the optical path 82 of the block 80 is received by the light receiving element 40. Spectroscopic distribution of the spectrum is analyzed.

The block 80 is installed between the reaction pad 3 and the light receiving element 40 so that the optical path 82 connects the upper side of the reaction pad 3 and the lower side of the light receiving element 40 in a straight line. Accordingly, the optical signal distributed from the reaction pad 3 occupies most of the optical path 82 of the block 80.

Here, the optical path 82 has an inner diameter smaller than the size of the reaction pad 3, while a straight line connecting the center of the reaction pad 3 and the center of the light receiving element 40 (defined as the central axis of the reaction pad). It is desirable to be formed in the form of), which is to receive the light signal to the optical path guided to the optical path 82 of the block 80 is dispersed from the reaction pad (3) to the maximum, and outside the reaction pad (3) This is to minimize the inflow of the optical signal components reflected or scattered from the surface of the specimen inspection strip 2 into the optical path 82 of the block 80.

Referring to FIG. 2, in more detail, the light emitted from the light emitting device 20 includes a surface of the reaction pad 3 of the test strip 2, and a sample to which the reaction pad 3 is not attached. Irradiated to the surface of the test strip (2), etc., the light irradiated in this way is directly reflected by the surface, or by the reaction pad (3), the sample infiltrated into the reaction pad (3), the test strip (2) Reflection, absorption and scattering.

Here, the present invention is intended to analyze the distribution characteristics of the spectroscopic spectrum of the sample infiltrated into the reaction pad (3), so that the optical signal components reflected / scattered from the outside of the reaction pad (3) are received by the light receiving element (40). The more minimized, the more precise the distribution characteristics of the spectroscopic spectra.

The light detecting module 100 according to the present invention using the light detecting method of the sample test strip described above includes a light emitting device 20 for irradiating light to the reaction pad 3 of the test strip 2 and a light emitting device. A light receiving element 40 installed at a position spaced apart from the light source 20 to receive an optical signal irradiated from the reaction pad 3 to the outside, and receiving the light signal from the reaction pad 3; and the light emitting element 20 and the light receiving element 40 ) Is coupled to the fixed frame 60 and the block 80 is coupled to the fixed frame 60 is installed on the front side of the light receiving element (40).

On the other hand, the test strip 2 has a plurality of reaction pads (3) is attached, corresponding to the optical detection module 100 according to a preferred embodiment of the present invention is the reaction pad of the test strip (2) By providing the same set of light emitting elements 20 and light receiving elements 40 as the number of (3), various tests on samples infiltrated on reaction pads 3 containing different kinds of reagents are simultaneously performed. .

Here, in the optical detection module 100 according to the preferred embodiment of the present invention, the light emitting device 20 and the light receiving device 40 which are set as shown in FIG. 3 and FIG. 4 are combined and fixed to the fixed frame 60. The module of.

Accordingly, the configuration of the spectral spectrum detection system 1 as shown in FIG. 3 to which the present invention can be applied is simplified, and the maintenance of the detection system 1 is made simple and easy.

In the preferred embodiment of the present invention, the light emitting device 20 uses a chip LED (chip LED) 22 having a low power consumption and a relatively low product cost as shown in FIG. It consists of G, B and IR elements. At this time, the optical detection module 100 according to the preferred embodiment of the present invention constitutes R, G LEDs on one side (for example, the left side of the light receiving element 40), and the other side (for example, the light receiving element 40). On the right side of the panel, B and IR LEDs are configured.

In the preferred embodiment of the present invention, the light receiving element 40 uses a phototransistor 42 or a photodiode with low product cost and good sensitivity.

The fixed frame 60 is to be fixed to the light emitting device 20 and the light receiving device 40, the fixed frame 60 according to a preferred embodiment of the present invention is a light receiving device PCB 64 is fixed to the light receiving device 40 And a light emitting device PCB 64 to which the light emitting device 20 is fixed.

Here, the light receiving element PCB 64 and the light emitting element PCB 64 have the light receiving element 40 and the same spacing between the plurality of reaction pads 3 attached to the sample inspection strip 2. The light emitting elements 20 are arranged in a row.

Accordingly, in the spectral spectrum detection system 1 in which the optical detection module 100 according to the present invention is installed, the pedestal 200 for inserting the specimen inspection strip 2 into the detection position (the position where the optical detection module 100 is installed) is provided. The sample inspection strip 2 is positioned in correspondence with the light emitting device 20 and the light receiving device 40 of the light detection module 100 only by the configuration of the "

Thus, in the spectral spectrum detection system 1 equipped with the optical detection module 100 according to the present invention, unlike the conventional spectral spectrum detection system 1, a drive device such as a step motor and a servo motor or a position control device such as a position sensor Is eliminated, thereby reducing the manufacturing cost and maintenance cost of the detection system 1.

Meanwhile, in the fixed frame 60, the optical signal information received from the light receiving element 40 is formed in the through hole 622 at the position where the light receiving element 40 is installed, as shown in FIG. 6. 44) to be delivered to the main controller 300.

Block 80 is coupled to the fixed frame 60, the light emitting element 20 is irradiated to the reaction pad (3) of the strip for sample inspection 2 on the path of the optical signal dispersed from the reaction pad (3) An optical path 82 is formed in the groove.

Here, the block 80 according to the preferred embodiment of the present invention, while the optical path 82 has an inner diameter smaller than the size of the reaction pad 3, the center of the reaction pad 3 and the center of the light receiving element 40 It is formed on a straight line connecting the.

In addition, the block 80 is made of an optically transparent material through which the optical signal is not transmitted, and the optical signal is introduced only through the optical path 82, and only the optical signal passing through the optical path 82 of the block 80 is received by the light receiving element 40. ) And spectral spectral analysis.

In addition, the block 80 according to the preferred embodiment of the present invention, as shown in Figure 7 (a) by forming a recess groove 84 in communication with the optical path 82 on the upper surface of the light receiving element 40 is the recess groove ( 84) to be fixed to the fixed frame (60).

Accordingly, the light receiving element 40 receives the optical signal only through the optical path 82 of the block 80, thereby increasing the accuracy of the spectral spectrum analysis for the sample.

On the other hand, the block 80 according to the preferred embodiment of the present invention is disposed on both sides with the light receiving element 40 therebetween, which increases the amount of light received by the light receiving element 40 to increase the precision of spectral spectrum analysis. do.

Here, the block 80 according to the preferred embodiment of the present invention corresponds to the plurality of reaction pads 3 attached to the test strips 2 at the same interval as that of the reaction pads 3. 82) consists of a three-dimensional shape with a certain length arranged.

The upper surface of the block 80 is coupled to a plurality of light receiving element PCB 64 is arranged in a row for the light receiving element 40, the lower surface of the block 80 a plurality of light emitting element 20 is heat. The PCB 64 for light emitting elements arranged in a row is coupled.

To this end, the PCB fixing end 86 is formed on both sides with the lower inlet of the light path 82 interposed between the bottom surface of the block 80.

The PCB fixing end 86 is a surface to which the light emitting device PCB 64 is coupled, and is inclined toward the reaction pad 3 of the test strip 2 placed under the lower inlet of the optical path 82. As a result, the optical signal irradiated by the light emitting element 20 provided on the light emitting element PCB 64 is guided to the reaction pad 3.

Here, in the preferred embodiment of the present invention, the PCB fixing stage 86 is 45 so that the light irradiation angle of the light emitting device 20 is 45 ° in accordance with the recommendation of the International Illumination Committee (CIE) for measuring the object color by unidirectional illumination. It forms a slope of ˚.

On the other hand, the block 80 according to the preferred embodiment of the present invention forms an air flow path 88 on both sides in the width direction of the upper surface formed with the recess groove 84. Such an air flow path 88 is in communication with the concave groove 84 to allow air to flow around the light receiving element 40. This is to prevent the temperature of the block 80 from rising due to heat generation due to the continuous use of the light receiving element 40.

Here, in the block 80 according to the preferred embodiment of the present invention, the recessed groove 84 and the air flow path 88 are integrally formed as shown in FIG.

In the optical detection module 100 according to the present invention having the above-described configuration, the specimen inspection strip 2 is formed by the pedestal 200 into which the specimen inspection strip 2 is inserted as shown in FIG. 3. When the position is installed in the correct position to start the operation, the light emitting device 20 by the main controller 300 is to irradiate the optical signal to the reaction pad (3) of the test strip (2).

The light irradiated to the reaction pad 3 is reflected, absorbed, scattered, and scattered by the reaction pad 3. The light path of the block 80 located on the path of the optical signal dispersed in the reaction pad 3 is applied. An optical signal dispersed in the reaction pad 3 is led to the light receiving element 40 through 82.

The light receiving element 40 transmits the received light to the main controller 300 through the control line 44 to perform spectral spectrum analysis on the sample infiltrated into the reaction pad 3 in the main controller 300.

Here, the optical detection module 100 according to the present invention may simultaneously irradiate light from each of the plurality of light emitting devices 20 to the reaction pad 3 of the strip for sample inspection 2. On the contrary, in the optical detection module 100 according to the present invention, in order to minimize interference between optical signals irradiated by the connected light emitting devices 20, a plurality of light emitting devices 20 are sequentially sampled at predetermined time intervals. The reaction pad 3 of the test strip 2 may be irradiated.

As described above, although the optical detection method of the test strip for sample according to the embodiment of the present invention and the optical detection module using the same are shown in accordance with the above description and drawings, this is merely an example and the technical spirit of the present invention. Those skilled in the art will appreciate that various changes and modifications can be made without departing from the scope of the invention.

1 is a view for showing the technical idea of the light detection method of the test strip for testing according to the present invention;

2 is a view for showing a state in which the light is dispersed in the test strip;

Figure 3 is a view for showing a detection system in which the optical detection module of the strip for sample inspection according to the present invention is installed;

4 is an overall perspective view of a light detection module of a sample inspection strip according to a preferred embodiment of the present invention;

5 is an overall cross-sectional view of an optical detection module of a sample inspection strip according to a preferred embodiment of the present invention;

6 is an exploded perspective view of an optical detection module of a test strip according to a preferred embodiment of the present invention;

FIG. 7A is a sectional view taken along the line “A-A” of FIG. 6;

FIG. 7B is a cross-sectional view of the portion “B-B” of FIG. 6.

* Description of the symbols for the main parts of the drawings *

1: Spectral Spectrum Detection System 2: Sample Inspection Strip

3: reaction pad 20: light emitting device

22: chip LED 40: light receiving element

42: phototransistor 44: control line

60: fixed frame 62: PCB for light receiving element

622 through hole 64 PCB for light emitting device

80: block 82: light path

84: recessed groove 86: PCB fixing end

88: air flow path 90, 90 ': fixed bolt

100: optical detection module 200: pedestal

300: main controller

Claims (8)

In the light detection method of the test strip for detecting the spectroscopic distribution characteristics of the sample infiltrated on the reaction pad attached to the test strip having a light emitting device and a light receiving device, After the light emitting element is irradiated to the reaction pad, a block of an optically non-transparent material having an optical path and the light receiving element are sequentially disposed on the path of the optical signal dispersed from the reaction pad, and the optical beam is incident through the optical path. And detecting an optical signal of the sample inspection strip by causing an arc to be received by the light receiving element. The method of claim 1, The light path formed in the block has an inner diameter smaller than the size of the reaction pad, and the optical detection method of the strip for sample inspection, characterized in that arranged in parallel with the central axis of the reaction pad. In the light detection module of the test strip for detecting the spectroscopic distribution characteristics of the sample infiltrated on the reaction pad attached to the sample test strip having a light emitting device and a light receiving device, A fixed frame to which the light emitting element and the light receiving element are coupled; A block coupled to the fixed frame and installed at a front side of the light receiving element and formed of an optically nontransparent material; The block has an optical path incident on the optical path of the block by having an optical path formed on a path of an optical signal received from the light emitting device after being irradiated to the reaction pad from the light emitting device and received by the light receiving device. An optical detection module of a strip for sample inspection, characterized in that the arc is focused on the light receiving element. The method of claim 3, wherein And a light path of the block having an inner diameter smaller than the size of the reaction pad and formed to be parallel to the central axis of the reaction pad. The method according to claim 3 or 4, The block is formed in the upper groove in communication with the optical path is formed on the upper surface, is in close contact with the surface of the fixed frame, And the light receiving element is inserted into the recessed groove and fixed to the fixed frame so that the light receiving element receives an optical signal only through an optical path of the block. The method of claim 5, wherein The light emitting device is a light detection module of the test strip for sample, characterized in that disposed on both sides with the light receiving element therebetween. In the light detection module of the test strip for detecting the spectroscopic distribution characteristics of the sample infiltrated on the plurality of reaction pads attached to the strip for sample inspection having a plurality of light emitting elements and light receiving elements, A light emitting unit in which a plurality of light emitting elements are arranged in a line at a predetermined interval on a light emitting device PCB having a predetermined size; A light receiving unit in which a plurality of light receiving elements are arranged in a line at a predetermined interval on a light receiving element PCB having a flat plate shape having a predetermined size; A plurality of optical paths penetrated in the vertical direction are formed in a line at a predetermined interval in the horizontal direction, and a plurality of recessed grooves communicating with the optical path are formed on the upper surface in a row at a predetermined interval, the optical path of the optical path A block of light impermeable material formed on a bottom surface of the PCB fixing end inclined to both sides with a lower inlet in between; Including, the upper surface of the block is adhered to the PCB for the light receiving element is tightly attached to the recess of the light receiving element, the lower surface of the block is attached to the PCB for the light emitting element is fixed to the PCB fixed end The light emitting element is directed toward the pad of the sample test strip, and the optical path of the block is connected to the lower side of the center of the light receiving element and the upper part of the center of the reaction pad of the sample test strip to distribute the optical signal from the reaction pad. The optical detection module of the test strip, characterized in that only the component is delivered to the light receiving element. The method of claim 7, wherein The block has a plurality of air inlet holes are formed on both sides in the width direction of the upper surface of the recessed groove formed in the optical detection module of the test strip, characterized in that to prevent the temperature rise of the block due to the heat generation of the light receiving element.

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