JPWO2016157591A1 - Measuring apparatus and measuring method - Google Patents

Abstract

The measuring device (10) includes a housing (100), a light transmitting member (102), a light emitting means (120), a first light detecting means (140), a second light detecting means (142), and a light guide member (160). ). The housing (100) is provided with an opening (101). The translucent member (102) is located in the opening (101) and transmits at least light of the first wavelength. The light emitting means (120) is disposed inside the housing (100) and outputs light including light of the first wavelength. The first light detection means (140) and the second light detection means (142) are disposed inside the housing (100) and detect light of the first wavelength. The light guide member (160) is provided between the light emitting means (120) and the second light detection means (142). The optical axis of the first light detection means (140) and the optical axis of the light emission means (120) cross each other outside the casing (100) through the opening (101).

Description

  The present invention relates to a measuring apparatus and a measuring method for detecting and measuring a specific component using light.

  One method for detecting a specific component contained in a measurement target is to irradiate the measurement target with light having a wavelength that is absorbed by the component, and measure the amount of light absorbed by the measurement target. For example, Patent Document 1 discloses an apparatus for measuring a blood sugar level in blood. In this apparatus, a light source, a light receiving element, and a waveguide are provided on the upper surface of the base portion. And a part of waveguide is exposed to the lower surface of a base part, and the light which the light source produced | generated from this part is irradiated. In addition, reflected light is incident on this part. The incident reflected light is guided to the light receiving element.

  Further, Patent Document 2 describes that light is applied to the skin in an oblique direction, and a plurality of light receiving parts are arranged obliquely and spaced apart. The technique described in Patent Document 2 is intended to measure glucose contained in skin and blood.

JP 2011-245069 A JP 2005-513491 A

  Regarding the light emitted from the light source, the intensity, wavelength, and the like of the light may vary due to environmental changes such as the humidity of the atmosphere in which the light source is placed and the temperature of the light source, and deterioration of the light source. If the light emitted from the light source fluctuates, the measurement accuracy of the target component may be reduced when a specific component is detected using the light. Therefore, there is a demand for a technology that can suppress the influence of such light source fluctuations and improve the measurement accuracy.

  An object of the present invention is to provide a technique capable of suppressing the influence of fluctuation of light from a light source and improving measurement accuracy when detecting and measuring a specific component using light.

According to the present invention,
A housing with an opening;
A translucent member located in the opening and transmitting light of at least the first wavelength;
A light emitting means disposed inside the housing and outputting light including light of the first wavelength;
A first light detection means and a second light detection means, which are arranged inside the housing and detect light of the first wavelength;
A light guide member provided between the light emitting means and the second light detecting means;
With
The optical axis of the first light detecting means and the optical axis of the light emitting means cross each other outside the casing through the opening;
A measuring device is provided.

A housing with an opening;
A translucent member located in the opening and transmitting light of at least the first wavelength;
A light emitting means disposed inside the housing and outputting light including light of the first wavelength;
A first light detection means and a second light detection means, which are arranged inside the housing and detect light of the first wavelength;
A light guide member provided between the light emitting means and the second light detecting means;
With
The optical axis of the first light detecting means and the optical axis of the light emitting means cross each other outside the casing through the opening;
A measuring method using a measuring device is provided.

  ADVANTAGE OF THE INVENTION According to this invention, when detecting and measuring a specific component using light, the influence by the fluctuation | variation of the light of a light source can be suppressed, and a measurement precision can be improved.

  The above-described object and other objects, features, and advantages will become more apparent from the preferred embodiments described below and the accompanying drawings.

It is a block diagram which shows the structure of the measuring apparatus which concerns on 1st Embodiment. It is a figure which shows the relationship of the timing of the light output of the light emission means of the measuring apparatus which concerns on 1st Embodiment, the light detection by a 1st light detection means, and the light detection by a 2nd light detection means. It is a figure which shows the relationship of the timing of the light output of the light emission means of the measuring apparatus which concerns on 2nd Embodiment, the light detection by a 1st light detection means, and the light detection by a 2nd light detection means.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

  In the following description, the control unit 300 and the calculation unit 320 of the measurement apparatus 10 indicate functional unit blocks, not hardware configuration. The control unit 300 and the calculation unit 320 of the measuring apparatus 10 include a CPU, a memory of any computer, a program that realizes the components shown in the figure loaded in the memory, a storage medium such as a hard disk that stores the program, and a network connection It is realized by any combination of hardware and software centering on the interface. There are various modifications of the implementation method and apparatus.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of a measuring apparatus 10 according to the first embodiment.
The measuring apparatus 10 includes a housing 100, a translucent member 102, a light emitting unit 120, a first light detecting unit 140, a second light detecting unit 142, and a light guide member 160. The housing 100 is provided with an opening 101. The translucent member 102 is located in the opening 101 and transmits at least light having the first wavelength. The light emitting means 120 is disposed inside the housing 100 and outputs light including light having the first wavelength. The first light detection means 140 and the second light detection means 142 are disposed inside the housing 100 and detect light having the first wavelength. The light guide member 160 is provided between the light emitting means 120 and the second light detection means 142. The optical axis of the first light detection unit 140 and the optical axis of the light emitting unit 120 cross each other outside the casing 100 through the opening 101. Details will be described below.

  The measuring apparatus 10 is used, for example, in a state where the translucent member 102 is pressed against the skin of a living body. The measuring device 10 may be a device that calculates the amount of sugar (for example, glucose) contained in the skin based on the intensity of the first wavelength light detected by the first light detecting means 140 and the second light detecting means 142. . However, the measuring device 10 is not limited to such a device.

  Although a 1st wavelength is not specifically limited, When calculating the quantity of the sugar content contained in skin, it can be set as the wavelength of a near infrared region (for example, 1200 nm or more and 3000 nm or less).

  The measuring apparatus 10 according to the present embodiment further includes a light shielding plate 180 provided between the light emitting means 120 and the first light detecting means 140.

  The housing 100 of the measuring apparatus 10 is formed using, for example, resin or metal. An opening 101 is provided on one surface of the housing 100. The housing 100 may be composed of a plurality of components or a plurality of members.

  The translucent member 102 is fitted into the opening 101 of the housing 100. The translucent member 102 may be provided so as to block the entire opening 101 or may be provided in a part of the opening 101. The translucent member 102 is made of a material that transmits the first light, for example, glass that transmits infrared light. The translucent member 102 may be a flat plate or may be slightly curved as long as the optical axis of the light emitting means 120 and the optical axis of the first light detecting means 140 are designed to intersect outside the housing 100. May be. Hereinafter, of the surfaces of the translucent member 102, a surface facing the outside of the housing 100 is referred to as an outer surface, and a surface facing the inside of the housing 100 is referred to as an inner surface.

  The light emitting means 120 has a light emitting element such as an LED (Light Emitting Diode) or a laser diode as a light source. This light source preferably emits light of the first wavelength stronger than light of other wavelengths. In addition, the light emitting unit 120 may further include optical elements such as a collimator, a condenser lens, and a filter as necessary.

  The light emitting means 120 is arranged so that its optical axis passes through the translucent member 102. In the measuring apparatus 10 according to the present embodiment, the light emitting means 120 is disposed in a direction in which the optical axis is inclined with respect to the outer surface of the translucent member 102. In this case, for example, when the living skin is brought into contact with the translucent member 102, the optical axis of the light emitting means 120 is inclined with respect to the skin. By arranging the light emitting means 120 so that the light emitted from the light emitting means 120 passes directly through the light transmitting member 102 without passing through a mirror or the like, the measuring apparatus 10 can be downsized. Note that the present invention is not limited to such a configuration, and the optical axis of the light emitting means 120 may be bent halfway by a mirror or the like disposed inside the housing 100 and pass through the translucent member 102.

  The first light detection unit 140 detects light having the first wavelength. In the present embodiment, the first light detection means 140 can further detect the intensity of light of the first wavelength, but is not limited to this. The first light detection means 140 has a photoelectric conversion element such as a photodiode, for example. In the first light detection means 140, it is preferable that the sensitivity to light of the first wavelength is higher than the sensitivity of light of other wavelengths. The first light detection unit 140 may further include a filter or the like as necessary.

  The first light detection unit 140 is a part of the light output from the light emitting unit 120, and receives the light transmitted through the opening 101 and reflected by the object 20. The first light detection means 140 is arranged such that its optical axis passes through the light transmissive member 102. The optical axis of the first light detecting means 140 is a line that passes through the center of the light receiving surface of the first light detecting means 140 and is perpendicular to the light receiving surface in the light receiving portion of the first light detecting means 140. The first light detection means 140 is arranged in an orientation in which the optical axis is inclined with respect to the outer surface of the translucent member 102. The first light detection unit 140 is arranged so that the light reflected by the object 20 and transmitted through the light transmitting member 102 is directly incident on the first light detection unit 140 without passing through a mirror or the like. Can be miniaturized. Note that the present invention is not limited to such a configuration, and the optical axis of the first light detection unit 140 may be bent halfway by a mirror or the like disposed inside the housing 100 and pass through the translucent member 102.

  The optical axis of the first light detection unit 140 intersects with the optical axis of the light emitting unit 120 outside the housing 100. A point where the optical axis of the light emitting means 120 and the optical axis of the first light detecting means 140 intersect is called an intersection α. The distance between the intersection α and the outer surface of the translucent member 102 is 2 mm or less, preferably 1.5 mm or less. Moreover, it is preferable that the said space | interval is 0.5 mm or more. Moreover, the angle θ formed by the two optical axes is, for example, 60 ° or more and 120 ° or less. The angle formed by the optical axis of the light emitting unit 120 with respect to the outer surface of the light transmitting member 102 and the angle formed by the optical axis of the first light detecting unit 140 with respect to the outer surface of the light transmitting member 102 are equal to each other. preferable.

  If the light emitting means 120 and the first light detecting means 140 are arranged in such a relationship, measurement can be performed with high accuracy in a state where the skin or the like is in contact with the translucent member 102.

  For example, when the measuring apparatus 10 is an apparatus that calculates the amount of sugar contained in the skin, a part of the light having the first wavelength out of the light output from the light emitting means 120 is detected by the first light detecting means 140. Is absorbed by a specific component (detection target substance) in the skin, for example, by a sugar such as glucose contained in the interstitial fluid. Therefore, the amount of a specific detection target substance in the skin can be detected based on the light intensity detected by the first light detection means 140.

  The light shielding plate 180 is disposed so as to penetrate the translucent member 102. The light shielding plate 180 is made of a material that does not transmit light of the first wavelength. For example, a black plate. The light shielding plate 180 prevents light that is not reflected light from the object 20 from directly entering the first light detecting means 140 from the light emitting means 120. Further, it is prevented that the light is reflected by the inner surface, the inner surface, and the outer surface of the translucent member 102 and enters the first light detection means 140. Further, a part of the light output from the light emitting means 120 is prevented from being diffusely reflected inside the housing 100 and entering the first light detecting means 140. By providing the light shielding plate 180 in this manner, the first light detection means 140 can efficiently detect only the reflected light from the object 20, and measurement with higher accuracy is possible. The translucent member 102 may be disposed so as to contact the inner surface of the translucent member 102.

  The second light detection unit 142 detects light having the first wavelength. In the present embodiment, the second light detection means 142 can further detect the intensity of the first wavelength light, but is not limited to this. The second light detection means 142 has a photoelectric conversion element such as a photodiode, for example. In the second light detection means 142, it is preferable that the sensitivity to light of the first wavelength is higher than the sensitivity of light of other wavelengths. The second light detection unit 142 may further include a filter or the like as necessary.

  The second light detection unit 142 receives a part of the light output from the light emitting unit 120 and does not pass through the opening 101 and is not reflected by the object 20. Since the light reception intensity of the second light detection unit 142 does not depend on the object 20 but depends only on the light emission intensity of the light emission unit 120, the fluctuation of the light output from the light emission unit 120 can be directly detected.

  The light guide member 160 guides part of the light output from the light emitting means 120 to the second light detection means 142. The light guide member 160 is, for example, an optical fiber, a transparent resin that transmits light, or the like, and can be bent. By using the bendable light guide member 160 in this way, the positions and orientations of the light guide member 160 and the second light detection means 142 can be freely set. As a result, the measurement apparatus 10 can be reduced in size.

  The light guide member 160 is arranged so that one end of the light guide member 160 faces the light output portion of the light emitting means 120 and captures a part of the output light. However, one end of the light guide member 160 is not disposed so as to block all of the output of the light emitting means 120. On the other hand, the other end of the light guide member 160 is disposed to face the light receiving surface of the second light detection unit 142. The light taken in at one end passes through the light guide member 160 and is irradiated on the light receiving surface of the second light detection means 142.

  The light guide member 160 is disposed so as to guide, for example, 5 to 10% of light output from the light emitting unit 120 to the second light detection unit 142. Here, the light guided to the second light detection means 142 can be adjusted by the position and shape of the one end of the light guide member 160. Accordingly, the second light detection unit 142 can detect the amount of light necessary for correction while passing most of the light emitted from the light emitting unit 120 toward the opening 101.

Sectional area of the light input portion of the light guide member 160 may be, for example, 300μm ² ~16000μm ^2. Note that the cross-sectional area of the light incident portion is, for example, the cross-sectional area of the core portion at the light incident end when the light guide member 160 is an optical fiber. The diameter of the cross section of the core part is, for example, 20 to 140 μm.

  The measuring apparatus 10 further includes a control unit 300, a calculation unit 320, an operation unit 340, and a display unit 360. The control unit 300 controls the light emitting unit 120, the first light detection unit 140, and the second light detection unit 142. The calculation unit 320 calculates the amount of the detection target based on the received light intensity of the first light detection unit 140 and the second light detection unit 142.

  The operation unit 340 is operated by a user of the measurement apparatus 10. The operation unit 340 is, for example, a push type or contact type switch, and is located on the outer surface of the housing 100. The control unit 300 controls the light emitting unit 120 and the like based on the content of the operation performed on the operation unit 340.

  The controller 300 controls lighting and extinguishing of the light emitting means 120, light detection timing of the first light detecting means 140 and the second light detecting means 142, and the like. The operation timing of the light emitting means 120, the first light detecting means 140, and the second light detecting means 142 will be described in detail later.

  The calculation unit 320 acquires the detection result of the received light from each of the first light detection unit 140 and the second light detection unit 142. Then, the calculation unit 320 calculates the amount of the detection object based on the received light intensity of the first light detection unit 140 and the second light detection unit 142. At this time, the calculation unit 320 corrects the light reception intensity of the first light detection unit 140 with the light reception intensity of the second light detection unit 142.

The light intensity directly detected by the second light detection means 142 from the light emitting means 120 via the light guide member 160 is D ₀ , reflected by the object 20 and then detected by the first light detection means 140. Let D ₁ be the intensity of light. In that case, if D ₁ / D ₀ is used as the corrected received light intensity, the received light intensity of the first light detecting means 140 can be corrected based on the variation of the light emitting means 120. For example, by substituting D ₁ / D ₀ that is the corrected received light intensity into a predetermined mathematical formula, the detection amount in the measurement target can be calculated with high accuracy. Alternatively, the detected amount may be obtained from the corrected received light intensity using a table or the like that is stored in advance in a storage unit (not shown) and that shows the relationship between the received light intensity of the reflected light and the detected amount. The above formulas and tables can be prepared for each type of detection object. The detected amount is, for example, the content or concentration of the detection target substance.

  In the above description, the example in which the detection amount is calculated after correcting the received light intensity has been described. However, the present invention is not limited to such a procedure. For example, the detection amount is calculated based on the light reception intensity of the first light detection means 140 and the second light detection means 142, and then the detection amount obtained from the light reception intensity of the first light detection means 140 is calculated as the second light detection means. You may correct | amend with the detection amount calculated | required from the received light intensity of 142. FIG.

  In the light emitting means 120, the light emission intensity may change or the wavelength may shift depending on the surrounding environment such as aging deterioration, humidity, temperature and the like. Here, by performing the correction as described above, it is possible to prevent a decrease in accuracy of the detection result.

  Note that the calculation unit 320 does not always need to perform the above correction, and the presence or absence of correction may be switched as necessary.

  The calculated detection amount is displayed on the display unit 360 as a measurement result.

  The operations of the light emitting means 120, the first light detecting means 140, and the second light detecting means 142 controlled by the control unit 300 will be described below.

  FIG. 2 is a diagram illustrating a timing relationship between the light output of the light emitting unit 120 of the measurement apparatus according to the present embodiment, the light detection by the first light detection unit 140, and the light detection by the second light detection unit 142. . Hereinafter, in the figure showing the timing relationship between the light output of the light emitting means, the light detection by the first light detection means, and the light detection by the second light detection means, “ON” indicates light output or light detection. “OFF” indicates a time when light output or light detection is not performed.

When the light emitting means 120 continues to output light continuously for a long time, the temperature rises and the output intensity decreases. Therefore, the continuous output time _Tr is preferably set to several tens of msec (for example, 10 msec to 100 msec). By setting the continuous output time _Tr to about several tens of msec, the temperature rise of the light emitting means 120 can be minimized, and as a result, the amount of current can be increased to further increase the light emission intensity. The first light detection means 140 and the second light detection means 142 perform light detection in one continuous output of the light emitting means 120. The controller 300 controls the first light detection means 140 and the second light detection means 142 so that the first light detection means 140 and the second light detection means 142 operate simultaneously and detect the received light intensity at the same time. Here, the time of one light detection by the first light detection means 140 and the second light detection means 142 is shorter than _Tr . The first light detection means 140 and the second light detection means 142 perform light detection at the same time, and perform correction based on D ₀ and D ₁ at the same time, thereby enabling more accurate measurement.

Further, the control unit 300 causes the first light detection unit 140 and the second light detection unit 142 to perform detection after a specific waiting time _{Tw has} elapsed since the light output from the light emission unit 120 is started. The first light detection means 140 and the second light detection means 142 are controlled. Immediately after the light emitting means 120 starts emitting light, the output intensity is not stable. Therefore, the first light detecting means 140 and the second light detecting means 142, from the start of light emission of the light emitting unit 120, without performing the light detection until passage of the waiting time T _w, at the time of the lapse of the waiting time T _w By starting detection, stable light can be detected with high accuracy. Waiting time _{T w} can be, for example, 1msec more than 100msec or less.

  In addition, the control unit 300 is configured so that the first light detection unit 140 and the second light detection unit 142 perform detection a plurality of times during one light emission of the light emission unit 120. 140 and the second light detection means 142 are controlled. This figure shows an example in which light detection is performed four times in succession. For example, when light is incident on the light receiving surfaces of the first light detection means 140 and the second light detection means 142, a photocurrent flows in the photoelectric conversion element and is converted into a voltage that can be detected by an amplifier circuit (not shown). Here, although the photocurrent flowing through the photoelectric conversion element is very small, the measurement accuracy can be improved by performing detection a plurality of times, for example, by averaging the detected values. Further, the continuous output of the light emitting means 120 may be repeated a plurality of times with a turn-off time interposed therebetween.

  In this embodiment, every time the light emitting means 120 outputs light, simultaneous light detection by the first light detecting means 140 and the second light detecting means 142 is performed. Accordingly, it is possible to always obtain a detection value with high accuracy after correction.

  Next, the operation and effect of this embodiment will be described. According to the measurement apparatus 10 according to the present embodiment, even when the amount of light emitted from the light emitting unit 120 changes due to deterioration or environmental change, the change can be grasped and stable detection can be performed.

  In addition, the measurement apparatus 10 according to the present embodiment can improve the measurement accuracy with a simple structure by including the light guide member 160. For example, a method of providing a drivable reflecting plate in the vicinity of the light emitting means 120 and guiding the output light of the light emitting means 120 to the first light detecting means 140 or the second light detecting means 142 by moving the reflecting plate. However, in that case, there is a possibility that the mechanism becomes complicated and the reliability is lowered. Furthermore, simultaneous detection by the first light detection means 140 and the second light detection means 142 is impossible. Furthermore, since it is necessary to arrange the reflecting plate in the same manner with high accuracy every time, high accuracy is required for positioning the reflecting plate, and it is difficult to reduce the price. By using the light guide member 160, such a problem can be avoided.

  Moreover, the measuring apparatus 10 according to the present embodiment can be reduced in size by including the light guide member 160. For example, there is a method in which a fixed reflecting plate is provided inside the housing 100 and light that does not pass through the translucent member 102 is reflected and received by the second light detection means 142. In this case, the second light detection means 142 is provided. Therefore, the degree of freedom in design is reduced, and it is difficult to reduce the size of the apparatus. By using the light guide member 160, such a problem can be avoided.

(Second Embodiment)
FIG. 3 is a diagram illustrating a timing relationship between the light output of the light emitting unit 120 of the measurement apparatus according to the second embodiment, the light detection by the first light detection unit 140, and the light detection by the second light detection unit 142. It is. The measurement apparatus 10 according to the present embodiment is the first embodiment except that the control unit 300 does not control the first light detection means 140 and the second light detection means 142 so as to detect the received light intensity at the same time. It is the structure similar to the measuring apparatus 10 concerning.

  In the control unit 300 according to the present embodiment, the control unit 300 causes the second light detection unit 142 to perform light detection (first light detection and second light) during one light emission of the light emitting unit 120. Detection), and the first light detection means 140 and the second light detection means 142 so that the first light detection means 140 performs at least one detection between the first light detection and the second light detection. To control. The first light detection means 140 and the second light detection means 142 do not perform light detection at the same time.

In the example shown in this figure, during one continuous output of the light emitting means 120, the light detection by the second light detection means 142, the light detection by the first light detection means 140, and the light detection by the second light detection means 142 are performed. Do in order. Here, the emission start of the light emitting means 120, between the start of the detected light first time of the second light detecting means 142, as in the first embodiment, providing the time difference between latency T _w.

In the calculation unit 320, the average value of the received light intensity of the two times of light detection by the second second light detection means 142 is D ₀ ′, the received light intensity by the first light detection means 140 is D ₁ ′, and D ₁ '/ D ₀ ' is obtained as the corrected received light intensity. Then, using D ₁ ′ / D ₀ ′, the detection amount is calculated as in the first embodiment.

Note that light detection by the second light detection means 142 may be performed at least once at the beginning and end during one continuous output of the light emitting means 120, and light detection by the first light detection means 140 is performed between both light detections. May be performed multiple times. In that case, in the above, the average value of the results of the plurality of light detections by the first light detection means 140 may be regarded as D ₁ ′.

  Measurement accuracy can be improved by performing detection by the second light detection unit 142 before and after detection by the first light detection unit 140 and correcting the light reception intensity of the first light detection unit 140.

  Next, the operation and effect of this embodiment will be described. In this embodiment, the same operation and effect as in the first embodiment can be obtained. In addition, according to the measurement apparatus 10 according to the present embodiment, the first light detection means 140 and the second light detection means 142 are operated simultaneously, or the first light detection means 140 and the second light detection means 142 are operated. It is not necessary to detect the received light intensity at the same time, and the configuration of the control unit 300 and the calculation unit 320 can be simplified.

  As mentioned above, although embodiment of this invention was described with reference to drawings, these are the illustrations of this invention, Various structures other than the above are also employable.

Hereinafter, examples of the reference form will be added.
1. A housing with an opening;
A translucent member located in the opening and transmitting light of at least the first wavelength;
A light emitting means disposed inside the housing and outputting light including light of the first wavelength;
A first light detection means and a second light detection means, which are arranged inside the housing and detect light of the first wavelength;
A light guide member provided between the light emitting means and the second light detecting means;
With
The optical axis of the first light detecting means and the optical axis of the light emitting means cross each other outside the casing through the opening;
measuring device.
In the measuring apparatus according to 2.1,
A light-shielding plate provided between the light emitting unit and the first light detecting unit;
measuring device.
3.1 In the measuring apparatus according to 1 or 2,
A controller for controlling the light emitting means, the first light detecting means, and the second light detecting means;
A calculation unit that calculates the amount of the detection object based on the received light intensity of the first light detection unit and the second light detection unit;
measuring device.
In the measuring apparatus according to 4.3,
The calculating unit corrects the light reception intensity of the first light detection unit with the light reception intensity of the second light detection unit;
measuring device.
5.3 In the measuring apparatus according to 4 or 3,
The control unit controls the first light detection means and the second light detection means so that the first light detection means and the second light detection means operate simultaneously and detect the received light intensity at the same time.
measuring device.
In the measuring apparatus according to 6.5,
The control unit includes the light emitting unit, the first light detecting unit, and the first light detecting unit, so that the first light detecting unit and the second light detecting unit perform detection a plurality of times during one light emission of the light emitting unit. Controlling the second light detection means;
measuring device.
7.3 In the measuring apparatus according to 4 or 4,
In the control unit, during one light emission of the light emitting means, the second light detecting means performs at least first light detection and second light detection, and the first light detection and the second light detection are performed. Controlling the first light detection means and the second light detection means so that the first light detection means performs detection during light detection;
measuring device.
In the measuring device according to any one of 8.3 to 7,
The control unit is configured so that at least one of the first light detection means and the second light detection means performs detection after the elapse of a specific waiting time after starting to output light from the light emission means. Controlling one light detection means and the second light detection means;
measuring device.
In the measuring device according to any one of 9.1 to 8,
The measuring device is used in a state where the translucent member is pressed against the skin of a living body,
The first wavelength is a wavelength in the near infrared region,
further,
Calculating the amount of sugar contained in the skin based on the intensity of the light of the first wavelength detected by the first light detection means and the second light detection means;
measuring device.
10. A housing with an opening;
A translucent member located in the opening and transmitting light of at least the first wavelength;
A light emitting means disposed inside the housing and outputting light including light of the first wavelength;
A first light detection means and a second light detection means, which are arranged inside the housing and detect light of the first wavelength;
A light guide member provided between the light emitting means and the second light detecting means;
With
The optical axis of the first light detecting means and the optical axis of the light emitting means cross each other outside the casing through the opening;
Measuring method using a measuring device.
In the measuring method described in 10-2.10.
The measuring device further includes a light shielding plate provided between the light emitting means and the first light detecting means,
Measuring method.
In the measurement method according to 10-3.10 or 10-2,
Controlling the light emitting means, the first light detecting means, and the second light detecting means;
A calculation step of calculating the amount of the detection object based on the received light intensity of the first light detection means and the second light detection means,
Measuring method.
In the measurement method described in 10-4.10-3,
In the calculating step, the light reception intensity of the first light detection means is corrected with the light reception intensity of the second light detection means,
Measuring method.
In the measurement method according to 10-5.10-3 or 10-4,
In the controlling step, the first light detecting means and the second light detecting means operate simultaneously, and the first light detecting means and the second light detecting means are controlled so as to detect the received light intensity at the same time. ,
Measuring method.
In the measuring method according to 10-6.10-5,
In the controlling step, the light emitting means, the first light detecting means, and the first light detecting means and the second light detecting means perform detection a plurality of times during one light emission of the light emitting means. And controlling the second light detection means,
Measuring method.
In the measurement apparatus according to 10-7.10-3 or 10-4,
In the controlling step, the second light detection means performs at least first light detection and second light detection during one light emission of the light emitting means, and the first light detection and the second light detection are performed. Controlling the first light detection means and the second light detection means so that the first light detection means performs detection during the light detection of
Measuring method.
In the measurement method according to any one of 10-8.10-3 to 7,
In the controlling step, the first light detecting unit and the second light detecting unit detect the first light detecting unit and the second light detecting unit so that the first light detecting unit and the second light detecting unit perform detection after the elapse of a specific waiting time after starting to output light from the light emitting unit. Controlling the detection means and the second light detection means;
Measuring method.
In the measurement method according to any one of 10-9.10 to 10-8,
The measuring device is used in a state where the translucent member is pressed against the skin of a living body,
The first wavelength is a wavelength in the near infrared region,
further,
Calculating the amount of sugar contained in the skin based on the intensity of the light of the first wavelength detected by the first light detection means and the second light detection means;
Measuring method.
11. A housing with an opening;
A translucent member located in the opening and transmitting light of at least the first wavelength;
A light emitting means disposed inside the housing and outputting light including light of the first wavelength;
A first light detection means and a second light detection means, which are arranged inside the housing and detect light of the first wavelength;
A light guide member provided between the light emitting means and the second light detecting means;
With
The optical axis of the first light detecting means and the optical axis of the light emitting means cross each other outside the casing through the opening;
A computer of a measuring device; a control means for controlling the light emitting means, the first light detecting means, and the second light detecting means; and
The computer program for functioning as a calculation means which calculates the quantity of a detection target based on the light reception intensity | strength of a said 1st light detection means and a said 2nd light detection means.
In the computer program according to 11-2.11.
The measuring device further includes a light shielding plate provided between the light emitting means and the first light detecting means,
Computer program.
In the computer program according to 11-3.11 or 11-2,
The calculating means corrects the light receiving intensity of the first light detecting means with the light receiving intensity of the second light detecting means;
Computer program.
In the computer program according to any one of 11-4.11 to 11-3,
The control means controls the first light detection means and the second light detection means so that the first light detection means and the second light detection means operate simultaneously and detect the received light intensity at the same time.
Computer program.
In the computer program according to 11-5.11-4,
The control means includes the light emitting means, the first light detecting means, and the first light detecting means, so that the first light detecting means and the second light detecting means perform detection a plurality of times during one light emission of the light emitting means. Controlling the second light detection means;
Computer program.
In the computer program according to any one of 11-6.11 to 11-3,
In the control unit, the second light detection unit performs at least first light detection and second light detection during one light emission of the light emitting unit, and the first light detection and the second light detection are performed. Controlling the first light detection means and the second light detection means so that the first light detection means performs detection during light detection;
Computer program.
In the computer program according to any one of 11-7.11 to 11-6,
The control unit is configured to detect the first light detection unit and the first light detection unit so that the first light detection unit and the second light detection unit perform detection after a lapse of a specific waiting time after starting to output light from the light emission unit. Controlling the means and the second light detection means;
Computer program.
In the computer program according to any one of 11-8.11 to 11-7,
The measuring device is used in a state where the translucent member is pressed against the skin of a living body,
The first wavelength is a wavelength in the near infrared region,
further,
The calculating means calculates the amount of sugar contained in the skin based on the intensity of the light of the first wavelength detected by the first light detecting means and the second light detecting means;
Computer program.

  This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2015-071622 for which it applied on March 31, 2015, and takes in those the indications of all here.

Claims (10)

A housing with an opening;
A translucent member located in the opening and transmitting light of at least the first wavelength;
A light emitting means disposed inside the housing and outputting light including light of the first wavelength;
A first light detection means and a second light detection means, which are arranged inside the housing and detect light of the first wavelength;
A light guide member provided between the light emitting means and the second light detecting means;
With
The optical axis of the first light detecting means and the optical axis of the light emitting means cross each other outside the casing through the opening;
measuring device. The measuring apparatus according to claim 1,
A light-shielding plate provided between the light emitting unit and the first light detecting unit;
measuring device. The measuring apparatus according to claim 1 or 2,
A controller for controlling the light emitting means, the first light detecting means, and the second light detecting means;
A calculation unit that calculates the amount of the detection object based on the received light intensity of the first light detection unit and the second light detection unit;
measuring device. The measuring device according to claim 3,
The calculating unit corrects the light reception intensity of the first light detection unit with the light reception intensity of the second light detection unit;
measuring device. The measuring apparatus according to claim 3 or 4,
The control unit controls the first light detection means and the second light detection means so that the first light detection means and the second light detection means operate simultaneously and detect the received light intensity at the same time.
measuring device. The measuring apparatus according to claim 5, wherein
The control unit includes the light emitting unit, the first light detecting unit, and the first light detecting unit, so that the first light detecting unit and the second light detecting unit perform detection a plurality of times during one light emission of the light emitting unit. Controlling the second light detection means;
measuring device. The measuring apparatus according to claim 3 or 4,
In the control unit, during one light emission of the light emitting means, the second light detecting means performs at least first light detection and second light detection, and the first light detection and the second light detection are performed. Controlling the first light detection means and the second light detection means so that the first light detection means performs detection during light detection;
measuring device. In the measuring device according to any one of claims 3 to 7,
The control unit is configured so that at least one of the first light detection means and the second light detection means performs detection after the elapse of a specific waiting time after starting to output light from the light emission means. Controlling one light detection means and the second light detection means;
measuring device. In the measuring device according to any one of claims 1 to 8,
The measuring device is used in a state where the translucent member is pressed against the skin of a living body,
The first wavelength is a wavelength in the near infrared region,
further,
Calculating the amount of sugar contained in the skin based on the intensity of the light of the first wavelength detected by the first light detection means and the second light detection means;
measuring device. A housing with an opening;
A translucent member located in the opening and transmitting light of at least the first wavelength;
A light emitting means disposed inside the housing and outputting light including light of the first wavelength;
A first light detection means and a second light detection means, which are arranged inside the housing and detect light of the first wavelength;
A light guide member provided between the light emitting means and the second light detecting means;
With
The optical axis of the first light detecting means and the optical axis of the light emitting means cross each other outside the casing through the opening;
Measuring method using a measuring device.

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