JP2016067815A - Optical measurement apparatus and optical measurement method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical measurement apparatus capable of inhibiting light beams from a plurality of light-sending points from simultaneously entering one light-receiving point, while shortening a time required for lighting all of the multiple light-sending points.SOLUTION: An optical measurement apparatus 100 includes: a plurality of light-sending probes 4; a plurality of light-receiving probes 5; and light-sending point extraction means 33 that, when a distance from one light-sending point (a light-sending probe 4) of the plurality of light-sending probes 4 and a light receiving probe 5 corresponding to another light-sending point (another light-sending probe 4) is separated by a distance P or more, extracts a light-sending point group consisting of the one light-sending point (the light-sending probe 4) and the other light-sending point (the other light-sending probe 4) as a light-sending point group W(a) for simultaneously lighting the light-sending point group.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an optical measurement device and an optical measurement method, and more particularly, to an optical measurement device and an optical measurement method provided with a light transmission means including a plurality of light transmission points that irradiate a subject with light.

  2. Description of the Related Art Conventionally, there has been known an optical measurement device that includes a light transmission unit including a plurality of light transmission points that irradiate a subject with light (see, for example, Patent Document 1).

  Patent Document 1 discloses an optical measurement device including a light irradiation unit that irradiates light to a plurality of positions in an inspection region in a living body. The optical measurement device includes a light irradiation unit, a light detection unit, and a processing unit. The light irradiating means is configured to sequentially irradiate light into the living body from a plurality of light transmission points arranged in the inspection region in the living body. Further, the light detection means includes a plurality of light receiving points respectively arranged at positions corresponding to the light transmission points. The light detection means is configured to detect light irradiated from each light transmission point and passed through the living body at each light receiving point.

  Moreover, although not described in the above-mentioned Patent Document 1, conventionally, a light transmitting means including a plurality of light transmitting points and capable of simultaneously lighting two or more light transmitting points among the plurality of light transmitting points. An optical measuring device equipped with the above is also known.

  The optical measurement device that lights two or more light transmission points at the same time is configured such that a set light transmission point among a plurality of light transmission points is simultaneously lighted based on a setting operation by a user. . As a result, the time required to light all of the plurality of light transmission points is shortened as compared with the case where the light transmission points are sequentially turned on one by one (sampling interval). It can be made smaller).

Japanese Patent No. 4097522

  However, in the optical measuring device that lights two or more light transmitting points at the same time, depending on the light transmitting points set by the user, light from a plurality of light transmitting points (released from the subject) with respect to one light receiving point. It is considered that the light is incident at the same time. That is, when the light receiving point corresponding to one of the light transmitting points that are lit simultaneously receives light from another light transmitting point in addition to light from one light transmitting point. It is thought that there is. In this case, it becomes difficult for the processing means of the optical measurement device to distinguish between light from one light transmission point and light from another light transmission point, so it is difficult to obtain an accurate measurement result. Become. Therefore, conventionally, it has been difficult to suppress the simultaneous incidence of light from a plurality of light transmission points with respect to one light receiving point while shortening the time required to light all of the plurality of light transmission points. There is a problem that there is.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to reduce the time required to turn on all of the plurality of light transmitting points while reducing one light receiving point. It is to provide an optical measurement device capable of suppressing the simultaneous incidence of light from a plurality of light transmission points.

  In order to achieve the above object, an optical measurement apparatus according to a first aspect of the present invention includes a plurality of light transmission points arranged so as to have a predetermined distance from each other, and at least one of the plurality of light transmission points. A light transmitting means for irradiating the subject with light by turning on the light, and a plurality of light receiving points arranged so as to have a predetermined distance from each other. The distance between the light receiving means for receiving the light emitted from the object to the outside by the light receiving point and the light receiving point corresponding to the other light transmitting point from the plurality of light transmitting points is predetermined. And a light transmission point extracting means for extracting a light transmission point group composed of one light transmission point and another light transmission point as a light transmission point group that can be turned on simultaneously.

  In the optical measurement device according to the first aspect of the present invention, as described above, the distance between one light transmission point and the light receiving point corresponding to the other light transmission point is a predetermined distance among the plurality of light transmission points. There is provided a light transmission point extracting means for extracting a light transmission point group composed of one light transmission point and another light transmission point in the case of being separated as described above as a light transmission point group that can be turned on simultaneously. As a result, among the plurality of light transmission points, only the light transmission points whose distance between the one light transmission point and the light receiving point corresponding to the other light transmission point is more than a predetermined distance can be simultaneously turned on. It can be extracted as a point cloud. Therefore, if a predetermined distance is set such that light from a plurality of light transmission points is not simultaneously received with respect to one light reception point, the light transmission point group extracted by the light transmission point extraction means is simultaneously turned on. Even in such a case, it is possible to suppress the simultaneous reception of light from a plurality of light transmission points that are turned on simultaneously by one light receiving point. As a result, it is possible to suppress the simultaneous incidence of light from a plurality of light transmission points to one light receiving point while shortening the time required to light all the plurality of light transmission points. Moreover, unlike the case where the user sets a light transmission point group that can be turned on simultaneously, erroneous setting of the light transmission point group can be suppressed, and the work burden on the user related to measurement can be reduced.

  In the optical measurement device according to the first aspect described above, preferably, at least one of the plurality of light transmission points is used as a first light transmission point which is a reference for calculating the distance, and a plurality of light transmission points is used. A light transmission point that is different from the first light transmission point is set as the second light transmission point, and a first distance that is a distance between the first light transmission point and the light receiving point corresponding to the second light transmission point And a distance calculating means for calculating a second distance that is a distance between the second light transmitting point and the light receiving point corresponding to the first light transmitting point, and the light transmitting point extracting means is calculated by the distance calculating means. In addition, it is configured to extract a light transmission point group in which the first distance and the second distance are not less than a predetermined distance. If comprised in this way, when the 1st light transmission point and the 2nd light transmission point are lighted simultaneously, the light-receiving point corresponding to a 2nd light transmission point will receive the light from a 1st light transmission point. And the light receiving point corresponding to the first light transmitting point can be prevented from receiving light from the second light transmitting point. As a result, it can be more reliably suppressed that one light receiving point simultaneously receives light from a plurality of light transmitting points.

  In this case, it is preferable that the light transmission point extracting unit is configured such that the minimum first distance among the first distances calculated by the distance calculating unit and the minimum second distance among the second distances are a predetermined distance. It is configured to extract the light transmission point group as described above. If comprised in this way, when extracting a light transmission point group, the minimum 1st distance and the minimum 2nd distance are not compared with the 1st non-minimum distance and the non-minimum 2nd distance, and predetermined distance. The light transmission point group that can be turned on simultaneously can be extracted simply by comparing the predetermined distance with the predetermined distance. As a result, it is possible to suppress an increase in the processing load on the light transmission point extraction means, because there is no need to compare the non-minimum first distance and non-minimum second distance with the predetermined distance.

  In the optical measurement device including the distance calculation unit, the distance calculation unit is preferably configured to sequentially calculate the first distance and the second distance for all of the plurality of light transmission points. If comprised in this way, since the light transmission point extraction means can extract the light transmission point group which can be lighted simultaneously based on all the 1st distances and 2nd distances of several light transmission points, It is possible to maximize the number of light transmission points included in the light transmission point group that can be turned on simultaneously. As a result, it is possible to further shorten the time required to light all the plurality of light transmission points.

  In the optical measurement device according to the first aspect, preferably, schedule determination means for determining a lighting schedule by assigning one or a plurality of light transmission point groups extracted by the light transmission point extraction means for each lighting cycle; And a lighting control means for lighting the assigned one or a plurality of light transmission point groups for each lighting cycle based on the lighting schedule. If comprised in this way, while a lighting schedule will be determined (automatically) by a schedule determination means, a light transmission point group will be lighted (simultaneously lighted) based on a lighting schedule by a lighting control means. Accordingly, it is possible to reduce a user's work load such as a user's determination of a lighting schedule and a user's operation for lighting a light transmission point group based on the lighting schedule. As a result, convenience related to measurement by the optical measurement device can be improved.

  In this case, it is preferable that the schedule determining unit transmits light included in one or a plurality of light transmission point groups assigned so that the number of lighting cycles of the lighting schedule becomes the number of lighting cycles set by the user. It is configured to increase or decrease the number of points. If comprised in this way, the number of lighting cycles of a lighting schedule can be set to the number according to a user's need (usage mode). For example, even when multiple measurements with different total number of light transmission points and measurement conditions are performed, if it is desired that the number of lighting cycles be constant, multiple measurements are performed based on the user's setting operation. The number of lighting cycles in measurement can be set to be the same.

  In the optical measuring device including the schedule determination unit, preferably, a lighting schedule display unit that displays the lighting schedule in a state where one or a plurality of light transmission point groups assigned to each lighting cycle of the lighting schedule can be identified. Prepare. If comprised in this way, a lighting schedule can be visually recognized with respect to a user in the state which can identify the 1 or several light transmission point group allocated to each lighting cycle. Thereby, even when the light transmission point group is automatically extracted, the user can easily confirm the extracted light transmission point group, so that the convenience of measurement by the optical measurement device can be further improved.

  The optical measurement method according to the second aspect of the present invention includes a plurality of light transmission points arranged so as to have a predetermined distance from each other, and turns on at least one of the plurality of light transmission points to the subject. Light that includes a step of irradiating light and a plurality of light receiving points arranged so as to be spaced apart from each other, and is emitted from the illuminated light transmission point to the subject and emitted from the subject to the outside of the subject The first light transmission when the distance between one light transmission point and a light reception point corresponding to another light transmission point is more than a predetermined distance among the plurality of light transmission points. Extracting a light transmission point group composed of points and other light transmission points as a light transmission point group that can be turned on simultaneously.

  In the optical measurement method according to the second aspect of the present invention, as described above, the distance between one light transmission point and the light receiving point corresponding to another light transmission point is a predetermined distance from among the plurality of light transmission points. A step of extracting a light transmission point group composed of one light transmission point and another light transmission point in the case of being separated as described above as a light transmission point group that can be turned on simultaneously is provided. Thereby, also in the optical measurement method according to the second aspect, light from a plurality of light transmitting points is simultaneously incident on one light receiving point while shortening the time required to light all the plurality of light transmitting points. Can be suppressed.

  According to the present invention, as described above, light from a plurality of light transmitting points is simultaneously incident on one light receiving point while shortening the time required to light all the plurality of light transmitting points. Can be suppressed.

1 is a block diagram illustrating an overall configuration of an optical measurement device according to a first embodiment of the present invention. It is the perspective view which showed the holder and the light transmission probe and light reception probe which were arrange | positioned at the holder. It is the schematic diagram which showed an example of arrangement | positioning of a measurement range, a light transmission probe and a light reception probe, and arrangement | positioning of a measurement channel. It is the block diagram which showed the structure of the optical measurement unit and control unit of the optical measuring device by 1st Embodiment of this invention. It is the figure which showed an example of the lighting schedule of the optical measuring device by 1st Embodiment of this invention. It is a functional block diagram for demonstrating the control part of an optical measuring device. It is a schematic diagram for demonstrating calculation of the 1st distance of the optical measuring device by 1st Embodiment of this invention. It is a schematic diagram for demonstrating calculation of the 2nd distance of the optical measuring device by 1st Embodiment of this invention. It is the figure which showed an example of the guidance display of the optical measuring device by 1st Embodiment of this invention. It is a flowchart for demonstrating control processing of extraction of the light transmission point group of the optical measuring device by 1st Embodiment of this invention, and determination of a lighting schedule. It is the figure which showed an example of the lighting schedule of the optical measuring device by 2nd Embodiment of this invention. It is a flowchart for demonstrating the control processing of the determination of the lighting schedule of the optical measuring device by 2nd Embodiment of this invention. It is a schematic diagram for demonstrating calculation of the 1st distance and 2nd distance of the optical measuring device by 3rd Embodiment of this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

(First embodiment)
First, with reference to FIGS. 1-9, the whole structure of the optical measuring device 100 by 1st Embodiment of this invention is demonstrated. In the first embodiment, the optical measurement device 100 is a brain function measurement device that performs optical measurement (brain function measurement) by near infrared spectroscopy (NIRS).

  As shown in FIG. 1, the optical measurement device 100 includes an optical measurement unit 1 and a control unit 2. The optical measuring device 100 has a function of measuring the brain activity of the subject (subject) using the light transmitting probe 4 and the light receiving probe 5 connected via the optical fiber 3. The optical fiber 3 is an example of the “light transmitting means” and “light receiving means” in the present invention. The light transmission probe 4 is an example of the “light transmission point” and “light transmission means” in the present invention. The light receiving probe 5 is an example of the “light receiving point” and “light receiving means” in the present invention.

  The light transmitting probe 4 and the light receiving probe 5 of the optical measuring device 100 are respectively placed at predetermined positions on the surface of the subject's head by being attached to a probe fixing holder 6 attached to the subject's head. . Then, the optical measurement device 100 irradiates the measurement light in the near infrared wavelength region from the light transmission probe 4 and makes the measurement light reflected in the head of the subject incident on the light receiving probe 5 to detect the measurement light. Obtains the light intensity (amount of received light). Based on the intensity of the acquired measurement light, it is possible to acquire a change in the amount of hemoglobin (oxygenated hemoglobin, deoxygenated hemoglobin, and total hemoglobin) associated with brain activity. Thereby, the optical measuring device 100 can acquire the change of the hemoglobin amount accompanying brain activity, ie, the change of a blood flow rate, and the activation state of oxygen metabolism non-invasively. In the optical measurement, the brain activity is measured for each measurement point (measurement channel 7 (see FIG. 3)) configured by a pair of the light transmission probe 4 and the light reception probe 5. The measurement data is acquired as the amount of hemoglobin change relative to the rest period in the brain function measurement.

  As shown in FIG. 2, the holder 6 has a large number of mounting holes 6a arranged in a matrix at equal intervals A (for example, 3 cm), and one light transmission probe 4 or one for each mounting hole 6a. The light receiving probe 5 can be inserted and fixed. For this reason, the adjacent light transmitting probe 4 and light receiving probe 5 are arranged so as to be separated by a predetermined distance A. The light transmitting probe 4 and the light receiving probe 5 are arranged so as to be alternately arranged in the row and column directions with respect to the mounting holes 6a. Thereby, as shown in FIG. 3, a measurement channel 7 is formed between the adjacent light transmitting probe 4 and light receiving probe 5. The user (apparatus operator) determines the probe arrangement in the mounting hole 6a according to the region (frontal head, top of head, temporal region, occipital region, etc.) to be measured, and the light transmitting probe 4 and the light receiving probe 5 are held in the holder. Attach to 6. FIG. 2 shows a state where only two light transmitting probes 4 and two light receiving probes 5 are attached to the holder 6. FIG. 3 shows an example in which 14 light transmitting probes 4 and 13 light receiving probes 5 are attached to the holder 6. The light receiving probe 5 forming the light transmitting probe 4 and the measurement channel 7 is an example of the “light receiving point corresponding to the light transmitting point” in the present invention.

  Next, the device configuration of the optical measurement device 100 will be described in detail.

  The optical measurement unit 1 includes, for example, 14 light transmission probes 4 and 13 light reception probes 5. As shown in FIG. 3, when 14 light-transmitting probes 4 and 13 light-receiving probes 5 are arranged in 3 rows × 9 columns while the light-transmitting probes 4 and the light-receiving probes 5 are adjacent to each other, The optical probe 4 and the light receiving probe 5 form 42 measurement channels 7.

  As shown in FIG. 4, the optical measurement unit 1 includes a light source 11, a light detection unit 12, a light source drive unit 13, an A / D converter 14, a main body control unit 15, and a communication in a housing 10. Unit 16 and storage unit 17. The light source 11 and the light source driving unit 13 are examples of the “light transmitting unit” in the present invention. The light detection unit 12 is an example of the “light receiving means” in the present invention. The main body control unit 15 is an example of the “lighting control unit” in the present invention.

  The light source 11 is configured to output measurement light to the light transmission probe 4 via the optical fiber 3. The light source 11 includes a semiconductor laser, an LED, and the like, and is configured to output measurement light having a plurality of wavelengths in the near infrared wavelength region. The light detection unit 12 includes an APD (avalanche photodiode), a photomultiplier tube, and the like, and is configured to detect measurement light incident on the light receiving probe 5 through the optical fiber 3. As a result, the light detection unit 12 outputs a received light amount signal corresponding to the detected measurement light to the A / D converter 14. The light source drive unit 13 is configured to turn on and off the light source 11 (each light transmission probe 4) according to a control signal from the main body control unit 15. The A / D converter 14 is configured to convert the received light amount signal of the light detection unit 12 into a predetermined digital signal and output it to the main body control unit 15.

  The main body control unit 15 is a computer including a CPU, a memory, and the like. The main body control unit 15 is configured to control each unit of the optical measurement unit 1 by executing a measurement program. For example, the main body control unit 15 performs control to store measurement data based on the received light amount signal acquired from the A / D converter 14 in the storage unit 17. In addition, the main body control unit 15 performs control to transmit measurement data to the control unit 2 via the communication unit 16. Further, the main body control unit 15 acquires lighting schedule data 23b described later from the control unit 2, and controls the operation of the light source driving unit 13 (light source 11) based on the acquired lighting schedule data 23b. The lighting schedule data 23b is an example of the “lighting schedule” in the present invention.

  The communication unit 16 is configured to be able to perform wireless or wired communication with a communication unit 24 described later of the control unit 2. The storage unit 17 includes a nonvolatile memory such as a flash memory. The storage unit 17 stores brain function measurement measurement data and the like.

  Next, the control unit 2 is a computer (PC) including a control unit 21 and an analysis unit 22 configured by a CPU or the like, a storage unit 23 configured by an HDD or the like, and a communication unit 24. The control unit 21 and the analysis unit 22 are each configured as a functional block realized by the CPU executing the control program 23 a stored in the storage unit 23. Note that the control unit 21 and the analysis unit 22 may be configured by dedicated hardware (dedicated CPU), not as functional blocks. Further, the control unit 2 includes a display unit 25 including a liquid crystal display and an operation input unit 26 including a keyboard and a mouse.

  The control unit 21 controls each unit of the control unit 2. For example, the control unit 21 acquires the measurement data of the optical measurement unit 1 via the communication unit 24 and stores the measurement data in the storage unit 23. The analysis unit 22 performs an imaging process (graphing process) on the measurement data recorded in the storage unit 23 and a calculation process for performing statistical processing and the like.

  The storage unit 23 stores various information such as a control program 23a, measurement conditions, and measurement parameters. The storage unit 23 stores lighting schedule data 23b described later. The communication unit 24 is configured to be able to communicate with the communication unit 16 of the optical measurement unit 1.

  The display unit 25 displays measurement data imaged by the analysis unit 22, guidance display (see FIG. 9) for displaying the lighting schedule data 23b, and the like. The operation input unit 26 receives an input operation from the user.

  Here, in 1st Embodiment, the control part 21 of the optical measuring device 100 is the light transmission point group (group of light transmission points) which can be lighted simultaneously, when the measurement conditions as shown in FIG. 3 are set. And the control for determining the lighting schedule S as shown in FIG. 5 is performed. In the present specification, simultaneous lighting is possible when a plurality (or one) of light transmission probes 4 are (simultaneously) lit, and a plurality of light reception probes 5 that form the light transmission probe 4 and the measurement channel 7 are arranged. It is described that the measurement light from the light transmission probe 4 is not incident at the same time.

  And the lighting schedule S is comprised by the several lighting cycle, and the light transmission point group extracted as the light transmission probe 4 which can be lighted simultaneously is allocated for every lighting cycle. In addition, a lighting cycle is a fixed period (for example, 15 ms) for which the light transmission probe 4 is lighted.

  In FIG. 5, the vertical axis indicates the number of the light transmission probe 4, and the horizontal axis indicates the number of the lighting cycle. Further, the light transmitting probe 4 to be lit is shown by hatching. That is, each light transmission probe 4 is assigned to one of the lighting cycles, and the light transmission probes 4 assigned to the same lighting cycle are turned on simultaneously. The number of the light transmission probe 4 is a number given to the light transmission probe 4 shown in FIG. The number of the lighting cycle is a number assigned for each lighting cycle, and the assigned light transmission points (light transmission point group) are turned on in the order of the lighting cycle numbers.

  Here, let W (a) be a light transmission point group that can be turned on simultaneously. a means the a-th light transmission probe 4 among the light transmission probes 4 included in the light transmission point group. For example, in the example of FIG. 5, in the lighting cycle whose lighting cycle number is 1, three simultaneous lightings of W (1) = 1, W (2) = 8, and W (3) = 13 are possible. A light transmission point group W (a) is assigned. In the example of FIG. 5, the lighting schedule S includes lighting cycles with lighting cycle numbers 1 to 7. Hereinafter, extraction of the light transmission point group W (a) that can be simultaneously turned on by the control unit 21 and determination of the lighting schedule S by the control unit 21 will be specifically described.

  As illustrated in FIG. 6, the control unit 21 causes the CPU to execute the control program 23 a stored in the storage unit 23, thereby causing the region setting unit 31, the distance calculation unit 32, the light transmission point extraction unit 33, and the schedule. It is configured to function as the determination unit 34. Through these processes, a light transmission point group W (a) that can be turned on simultaneously is extracted, and a lighting schedule S (lighting schedule data 23b) is generated. The distance calculation unit 32 is an example of the “distance calculation unit” in the present invention. The light transmission point extraction unit 33 is an example of the “light transmission point extraction unit” in the present invention. The schedule determination unit 34 is an example of the “schedule determination unit” in the present invention.

  The area setting unit 31 acquires and sets information on the measurement conditions (measurement range MA) and the arrangement of the light transmitting probe 4 and the light receiving probe 5 by reading information from the operation input unit 26 and the storage unit 23 by the user. It is configured as follows.

  The distance calculation unit 32 calculates the distance between the probes based on the measurement conditions set by the region setting unit 31. Further, based on the distance calculated by the distance calculation unit 32, it can be determined whether or not the focused light transmission probe 4 corresponds to a light transmission probe 4 that can be turned on simultaneously.

  Here, the light transmission probe 4 set as a reference for calculating the distance is defined as a first light transmission point E. A light transmission probe 4 arbitrarily set from among the light transmission probes 4 different from the first light transmission point E among the plurality of light transmission probes 4 is defined as a second light transmission point F. The light receiving probe 5 that forms the first light transmission point E and the measurement channel 7 is defined as a light receiving point Er. The light receiving probe 5 that forms the second light transmitting point F and the measurement channel 7 is defined as a light receiving point Fr. For example, as shown in FIG. 7, when the first light transmitting probe 4 is the first light transmitting point E, the first and second light receiving probes 5 are the light receiving points Er. When the eighth light transmitting probe 4 is the second light transmitting point F, the sixth, seventh and ninth light receiving probes 5 are the light receiving points Fr.

  In the first embodiment, the distance calculation unit 32 sets at least one light transmission probe 4 among the plurality of light transmission probes 4 as the first light transmission point E. Further, the distance calculation unit 32 sets a second light transmission point F from among the plurality of light transmission probes 4. Then, the distance calculation unit 32 has a first distance D (see FIG. 7) that is a distance between the first light transmission point E and the light receiving point Fr, and a first distance that is a distance between the second light transmission point F and the light receiving point Er. Two distances d (see FIG. 8) are calculated.

  In the first embodiment, the light transmission point extraction unit 33 is the minimum first distance D of the first distances D calculated by the distance calculation unit 32 and the minimum second distance of the second distances d. It is configured to determine whether d is equal to or greater than the distance P. When the minimum first distance D and the minimum second distance d are greater than or equal to the distance P, the first light transmission point E and the second light transmission point F are combined into one light transmission point group W (a). Is configured to register with.

  Here, the distance P is a distance such that the light receiving point Er (or the light receiving point Fr) does not simultaneously receive the light from the plurality of light transmitting probes 4, and is set to 100 mm, for example. The distance P is an example of the “predetermined distance” in the present invention.

  In the first embodiment, the distance calculation unit 32 sequentially sets all of the plurality of light transmission probes 4 to the first light transmission point E or the second light transmission point F, and sets the first light transmission point E to each of the first light transmission points F. The distance D and the second distance d are calculated. Then, the light transmission point extracting unit 33 determines whether or not the minimum first distance D and the minimum second distance d are equal to or greater than the distance P, and the minimum first distance D and the minimum second distance d are determined. When the distance d is greater than or equal to the distance P, the first light transmission point E and the second light transmission point F are added to one light transmission point group W (a) and registered. Yes.

  In the first embodiment, the schedule determination unit 34 is configured to determine the lighting schedule S by assigning the light transmission point group W (a) extracted by the light transmission point extraction unit 33 for each lighting cycle. ing.

  Next, referring to FIGS. 3, 5, 7, and 8, the extraction of the light transmission point group W (a) that can be simultaneously turned on by the control unit 21 and the determination of the lighting schedule S by the control unit 21 A specific example will be described.

  The region setting unit 31 acquires information on the measurement condition (measurement range MA), and determines the arrangement (3 rows × 9 columns) of the light transmitting probe 4 and the light receiving probe 5 illustrated in FIG.

  In FIG. 7, the distance calculation unit 32 sets the first light transmission probe 4 as the first light transmission point E and the eighth light transmission probe 4 as the second light transmission point F. Yes. In this case, the distance calculation unit 32 calculates first distances D1 to D3 that are distances between the first light transmission point E and the light receiving points Fr. Further, as shown in FIG. 8, the distance calculation unit 32 calculates second distances d1 and d2, which are distances between the second light transmission point F and each light receiving point Er. Note that the distance calculation unit 32 calculates the respective distances using, for example, the interval A described above and the arrangement information of the light transmission probe 4 and the light reception probe 5.

  7 and 8, the light transmission point extraction unit 33 registers the first light transmission point E (the first light transmission probe 4) in the light transmission point group W (1) and the first light transmission point E. The light transmission probe 4 that can be turned on simultaneously with the optical probe 4 is extracted. That is, the light transmission point extraction unit 33 uses the first distance D1 that is the minimum first distance D among the first distances D1 to D3 and the minimum second distance d among the second distances d1 and d2. It is determined whether a certain second distance d2 is greater than or equal to the distance P. In this example, since P ≦ D1 and P ≦ d2, the first and eighth light transmitting probes 4 are registered in the light transmitting point group W (a).

  When a plurality of light transmission points are registered in the light transmission point group W (a), the distance calculating unit 32 registers the light transmission point group W (a) (the first and eighth light transmission probes 4). ) Are set as the first light transmission point E, and the first distance D and the second distance d are calculated. When the distance calculation unit 32 sets the thirteenth light transmission probe 4 as the second light transmission point F, the distance calculation unit 32 calculates the first distances D4 to D7 and the second distances d4 to d7. The Then, the light transmission point extraction unit 33 compares the first distances D4 to D7 and the second distances d4 to d7 with the distance P. In this case, since P ≦ D6 and P ≦ d7, the light transmission point extraction unit 33 adds the second light transmission point F (the 13th light transmission probe 4) to the light transmission point group W (a). And register.

  As described above, the distance calculation unit 32 sequentially sets the other (second to seventh, ninth to twelfth and fourteenth) light transmission probes 4 as the second light transmission point F, respectively. The first distance D and the second distance d are calculated. As a result, in the example shown in FIGS. 7 and 8, the first, eighth and thirteenth light transmission probes 4 are finally registered in the light transmission point group W (a).

  Then, as illustrated in FIG. 5, the schedule determination unit 34 registers the light transmission point group W (a) extracted by the light transmission point extraction unit 33 in the lighting schedule S. In FIG. 5, the extracted No. 1, No. 8, and No. 13 are registered in the first lighting cycle.

  And the distance calculation part 32, the light transmission point extraction part 33, and the schedule determination part 34 repeat said process sequentially also about the light transmission probe 4 which is not registered into the lighting schedule S. FIG. Thereby, as shown in FIG. 5, all the light transmission probes 4 are assigned to any lighting cycle (the number of lighting cycle is 1-7), and the lighting schedule S is determined. The schedule determination unit 34 is configured to store the determined lighting schedule S in the storage unit 23 as lighting schedule data 23b.

  When the lighting schedule S is determined as described above, the control unit 21 performs control to transmit the lighting schedule data 23b to the light measurement unit 1, as shown in FIG. In the first embodiment, the main body control unit 15 of the light measurement unit 1 controls to light the assigned (registered) light transmission point group W (a) based on the lighting schedule S for each lighting cycle. Is configured to do. Specifically, the main body control unit 15 is configured to drive the light source driving unit 13 and irradiate measurement light from the light source 11 based on the acquired lighting schedule data 23b.

  The control unit 21 includes a lighting schedule display control unit 35. The lighting schedule display control unit 35 performs control to display the lighting schedule S (guidance display) on the display unit 25 in a state where the light transmission point group W (a) assigned to each lighting cycle of the lighting schedule S can be identified. Configured to do. For example, as illustrated in FIG. 9, the lighting schedule display control unit 35 includes a light transmission point group W (a) on the layout diagram of the light transmission probes 4 and the light reception probes 5 displayed on the display unit 25 of the control unit 2. Is displayed in a state of being color-coded for each lighting cycle. In FIG. 9, for the purpose of explanation, the color coding for each lighting cycle is illustrated by changing the type of hatching.

  Next, with reference to FIG. 10, the control process of extraction of the light transmission point group W (a) and determination of the lighting schedule S by the optical measurement device 100 of the present embodiment will be described. The following control processing is executed by the control unit 21 (region setting unit 31, distance calculation unit 32, light transmission point extraction unit 33, and schedule determination unit 34) (see FIG. 6) of the optical measurement device 100. T is the number of the light transmission probe 4 that is initially set as the first light transmission point E. Further, t is the number of the light transmission probe 4 set as the second light transmission point F. N is the total number of light transmitting probes 4 (for example, 14).

  Here, steps S6 to S12 in FIG. 10 constitute a first loop for the light transmission point extraction unit 33 to extract the light transmission point group W (a) including T that can be turned on simultaneously. In steps S4 to S15, the light transmission point group W (a) extracted by the first loop is sequentially registered in the lighting cycle, so that all (N) light transmission probes 4 are in any lighting cycle. A second loop for determining the lighting schedule S to be included is configured.

  First, in step S <b> 1 of FIG. 10, measurement conditions and arrangement information are set by the region setting unit 31. Thereafter, the process proceeds to step S2.

  In step S2, T is set as 1. That is, the distance calculation unit 32 sets the first light transmission probe 4 as the first light transmission point E. Thereafter, the process proceeds to step S3.

  In step S3, it is determined whether or not T is registered in the lighting schedule S. That is, the distance calculation unit 32 refers to the lighting schedule S and determines whether T is registered in the lighting schedule S. If T is registered in the lighting schedule S, the process proceeds to step S14. If T is not registered in the lighting schedule S, the process proceeds to step S4.

  In step S4, T is registered in the light transmission point group W (a). That is, the light transmission probe 4 with the number T is used as the first light transmission point (light transmission point group W (1) = T) registered in the light transmission point group W (a) by the light transmission point extraction unit 33. Are registered in the light transmission point group W (a). For example, when T = 1, the first light transmission probe 4 is registered. Thereafter, the process proceeds to step S5.

  In step S5, t is set as T + 1. That is, the T + 1 light transmission probe 4 is set as the second light transmission point F by the light transmission point extraction unit 33. Then, it progresses to step S6.

  In step S6, it is determined whether or not t is registered in the lighting schedule S. If t is already registered in the lighting schedule S, the process proceeds to step S11. If t is not registered in the lighting schedule S, the process proceeds to step S7.

  In step S7, the light transmission point group W (a) is set as the first light transmission point E, and each light transmission probe 4 (first light transmission point E) registered in the light transmission point group W (a) , T and the minimum first distance D (see FIG. 7) between the light transmitting probe 4 and the light receiving probe 5 (light receiving point Fr) forming the measurement channel 7 is calculated by the distance calculating unit 32. Thereafter, the process proceeds to step S8.

  In step S8, the second light transmitting point F (the light transmitting probe 4 at t), the light transmitting probe 4 registered in the light transmitting point group W (a) and the light receiving probe 5 (the light receiving point) forming the measurement channel 7 are used. The minimum second distance d (see FIG. 8) with Er) is calculated by the distance calculation unit 32. Thereafter, the process proceeds to step S9.

  In step S9, the light transmission point extraction unit 33 determines whether the minimum first distance D and the minimum second distance d are equal to or greater than the distance P. If the minimum first distance D and the minimum second distance d are both equal to or greater than the distance P, the process proceeds to step S10, and either the minimum first distance D or the minimum second distance d is a distance. If not P or more (less than the distance P), the process proceeds to step S11.

  In step S10, the light transmission point extraction unit 33 registers t in the light transmission point group W (a). For example, when t is registered in the light transmission point group W (a) for the second time, it is registered as W (2) = t. Then, it progresses to step S11.

  In step S11, the light transmission point extraction unit 33 determines whether t and N are equal numbers. If t is equal to N, the process proceeds to step S13. If t is not equal to N, the process proceeds to step S12.

  In step S12, the distance calculation unit 32 adds 1 to t. For example, when t is 2, t is set to 3, and the process returns to step S6. That is, t is added one by one from T + 1, and steps S4 to S11 are repeated until N is reached. As a result, all the second light transmission points F (= t) that can be turned on simultaneously for the first light transmission point E (= T) of interest are extracted.

  In step S13, the schedule determining unit 34 registers the light transmission point group W (a) in the lighting schedule S as one lighting cycle. Thereafter, the process proceeds to step S14.

  In step S14, the distance calculation unit 32 determines whether T and N are equal numbers. If T and N are not equal numbers, the process proceeds to step S15. If T and N are equal numbers, the process proceeds to step S16.

  In step S15, the distance calculation unit 32 adds 1 to T. For example, if T is 1, T is set to 2 and the process returns to step S4. That is, steps S4 to S14 are repeated until T is incremented by 1 and becomes N. As a result, the extracted light transmission point group W (a) is successively registered in the lighting schedule S and sequentially assigned to each lighting cycle.

  In step S16, the schedule determination unit 34 stores the lighting schedule S in the storage unit 23 as the lighting schedule data 23b. Thereafter, the control processing flow for extracting the light transmission point group W (a) and determining the lighting schedule S of the optical measuring device 100 according to the first embodiment is completed.

  In the first embodiment, the following effects can be obtained.

  In the first embodiment, as described above, the optical measurement device 100 includes one light transmission probe 4 (the first light transmission point E or the second light transmission point F) and the other among the plurality of light transmission probes 4. Distance (first distance D and second distance d) from the light receiving probe 5 (light receiving point Er or light receiving point Fr) corresponding to the light transmitting probe 4 (second light transmitting point F or first light transmitting point E). A light transmission point extraction unit 33 that extracts a light transmission point group composed of one light transmission probe 4 and another light transmission probe 4 when separated by a distance P or more as a light transmission point group W (a) that can be turned on simultaneously. Is provided. Thereby, one light transmission probe 4 (first light transmission point E or second light transmission point F) and another light transmission probe 4 (second light transmission point F or Only the light-transmitting probes 4 whose distances (the first distance D and the second distance d) to the light-receiving probe 5 (the light-receiving point Er or the light-receiving point Fr) corresponding to the first light-transmitting point E) are separated by the distance P or more are simultaneously It can be extracted as a light transmission point group W (a) that can be turned on. Therefore, by setting the distance P as a distance that does not simultaneously receive the light from the plurality of light transmitting probes 4 with respect to one light receiving probe 5, the light can be simultaneously turned on and extracted by the light transmitting point extracting unit 33. Even when the light transmission point group W (a) is turned on simultaneously, it is possible to suppress the measurement light from the plurality of light transmission probes 4 that are turned on simultaneously by one light receiving probe 4 from being simultaneously received. As a result, light from the plurality of light transmitting probes 4 is simultaneously incident on one light receiving probe 5 while shortening the time required for lighting all the plurality of light transmitting probes 4 (sampling interval). Can be suppressed. Moreover, unlike the case where the user sets a light transmission point group that can be turned on simultaneously, erroneous setting of the light transmission point group can be suppressed, and the work burden on the user related to measurement can be reduced.

  Here, as a comparative example, for example, when sequentially turning on one light transmission probe 4 for each channel in FIG. 3, the number of lighting cycles in the lighting schedule is 14 cycles equal to the number of light transmission probes 4. It becomes. In this case, for example, if the time required for one cycle is 15 ms and the non-lighting period is 15 ms, a period of 15 ms × 14 cycles + 15 ms = 225 ms is required to execute the lighting schedule once. That is, when the number of lighting cycles is 14, the sampling interval is 225 ms.

  On the other hand, the number of lighting cycles included in the lighting schedule S of FIG. 5 determined by the optical measuring device 100 according to the first embodiment is seven cycles. Therefore, if the time required for one cycle is 15 ms and the non-lighting period is 15 ms, a period of 15 ms × 7 cycles + 15 ms = 120 ms is required to execute the lighting schedule S once. As a result, the lighting schedule S determined by the schedule determination unit 34 has a sampling interval of 125 ms (compared to the lighting schedule in the case where the light transmission probes 4 are sequentially turned on one by one for each channel described above as a comparative example. = 225 ms-120 ms).

  In the first embodiment, as described above, the first light transmission which is a reference for calculating the distance of at least one light transmission probe 4 among the plurality of light transmission probes 4 is included in the optical measurement device 100. As the point E, a distance calculation unit 32 that sets a light transmission point different from the first light transmission point E among the plurality of light transmission probes 4 as the second light transmission point F is provided. Then, the distance calculation unit 32 sets the first distance D, which is the distance between the first light transmission point E and the light reception point Fr (light reception probe 5) forming the measurement channel 7 at the second light transmission point F, and the second distance D. The second distance d, which is the distance between the light transmitting point F and the light receiving point Er (light receiving probe 5) that forms the measurement channel 7 at the first light transmitting point E, is calculated. The light transmission point extraction unit 33 is configured to extract a light transmission point group W (a) in which the first distance D and the second distance d calculated by the distance calculation unit 32 are equal to or greater than the distance P. As a result, when the first light transmission point E and the second light transmission point F are turned on simultaneously, the light receiving point Fr receives the light from the first light transmission point E at the second light transmission point F. And the light receiving point Er can be prevented from receiving light from the second light transmitting point F. As a result, one light receiving probe 5 (light receiving point Er or Fr) simultaneously receives light from a plurality of light transmitting probes 4 (first light transmitting point E and second light transmitting point F). It can be surely suppressed.

  Moreover, in 1st Embodiment, as mentioned above, the light transmission point extraction part 33 makes the 1st minimum D of the 1st distance D (for example, 1st distance D1-D3) calculated by the distance calculation part 32. FIG. The minimum second distance d (for example, the second distance d2) among the distance D (for example, the first distance D1) and the second distance d (for example, the second distances d1 and d2) is greater than or equal to the distance P. A certain light transmission point group W (a) is extracted. Thus, when extracting the light transmission point group W (a), the first distance D (first distances D2 and D3) which is not the minimum and the second distance d (second distance d1) which is not the minimum are compared with the distance P. Without comparing, the light transmission point group W (a) that can be turned on simultaneously can be obtained by simply comparing the minimum first distance D (first distance D1) and minimum second distance d (second distance d2) with the distance P. ) Can be extracted. As a result, there is no need to compare the predetermined distance with the non-minimum first distance D (first distances D2 and D3) and the non-minimum second distance d (second distance d1). An increase in processing load can be suppressed.

  In the first embodiment, as described above, the distance calculation unit 32 is configured to sequentially calculate the first distance D and the second distance d for all of the plurality of light transmission probes 4. Thereby, the light transmission point extraction part 33 extracts the light transmission point group W (a) which can be lighted simultaneously based on all the 1st distance D and the 2nd distance d of the some light transmission probe 4. FIG. Therefore, unlike the case based on the first distance D and the second distance d of some of the plurality of light transmission probes 4, the light transmission points included in the light transmission point group W (a) that can be turned on simultaneously The number of (light transmitting probes 4) can be maximized. As a result, the time required to turn on all of the plurality of light transmission probes 4 can be further shortened.

  In the first embodiment, as described above, the lighting schedule S is assigned to the light measurement device 100 by assigning the light transmission point group W (a) extracted by the light transmission point extraction unit 33 for each lighting cycle. A schedule determining unit 34 for determining Further, the light measurement device 100 is provided with a lighting control unit 35 that lights the assigned light transmission point group W (a) for each lighting cycle based on the lighting schedule S. Thereby, the lighting schedule S is (automatically) determined by the schedule determination unit 34, and the light transmission point group W (a) is turned on (simultaneously turned on) based on the lighting schedule S by the lighting control unit 35. . As a result, it is not necessary for the user to determine the lighting schedule S and the user's operation for lighting the light transmission point group W (a) based on the lighting schedule S. Thereby, determination of the lighting schedule S by a user and the user's work burden, such as a user's operation for lighting the light transmission point group W (a) based on the lighting schedule S, can be reduced. As a result, convenience related to measurement by the optical measurement device 100 can be improved.

  In the first embodiment, as described above, the lighting schedule S is displayed on the optical measurement device 100 in a state where the light transmission point group W (a) assigned to each lighting cycle of the lighting schedule S can be identified. A lighting schedule display control unit 35 is provided. Thereby, the lighting schedule S can be visually recognized by the user in a state where the light transmission point group W (a) assigned to each lighting cycle can be identified. Thus, even when the light transmission point group W (a) is automatically extracted, the user can easily confirm the extracted light transmission point group W (a). The property can be further improved.

(Second Embodiment)
Next, the configuration of the optical measurement apparatus 200 according to the second embodiment will be described with reference to FIG. In the optical measuring device 200 according to the second embodiment, the schedule determination unit assigns the light transmission point group W (a) assigned so that the number of lighting cycles in the lighting schedule becomes the number of lighting cycles set by the user. Is configured to increase or decrease the number of light transmission points included in the. Note that in the second embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.

  As shown in FIG. 6, a schedule determination unit 234 is provided in the control unit 221 of the optical measurement device 200 according to the second embodiment. The schedule determination unit 234 includes the light transmission probes 4 included in the assigned light transmission point group W (a) so that the number X of lighting cycles in the lighting schedule S becomes the number Y of lighting cycles set by the user. It is comprised so that the number of may be increased / decreased.

  That is, when the light transmission point group W (a) extracted by the light transmission point extraction unit 33 is simply registered in the lighting schedule S, the lighting schedule S of the number X of lighting cycles (X = 7 in FIG. 5). Is obtained. When the number of lighting cycles set by the user is Y (≠ X), the schedule determination unit 234 selects one of the light transmission probes 4 (light transmission points) included in the light transmission point group W (a). By extracting the part and setting it to another lighting cycle (increasing or decreasing the number of light transmission points included in the light transmission point group W (a)), the number X of lighting cycles is made to coincide with Y. FIG. 11 shows an example when Y = 10, and three cycles are added to the lighting schedule S of FIG.

  In addition, when the lighting schedule S is determined by performing control processing of extraction of the light transmission point group W (a) and determination of the lighting schedule shown in FIG. 10, the number X of lighting cycles is determined under given measurement conditions. Minimum value. For this reason, when the number Y of lighting cycles set by the user is smaller than X, the number X of lighting cycles cannot be adjusted to Y. In this case, for example, the control unit 221 displays on the display unit 25 that the number Y of lighting cycles set by the user is smaller than the number X (minimum value) of lighting cycles. Other configurations of the optical measurement device 200 according to the second embodiment are the same as those of the optical measurement device 100 according to the first embodiment.

  Next, with reference to FIG. 11 and FIG. 12, the control process of the lighting schedule S determination by the optical measuring device 200 of the present embodiment will be described. The following control processing is executed by the control unit 221 (schedule determination unit 234) (see FIG. 6) of the optical measurement device 200. It is assumed that the measurement condition (measurement range MA) is set as shown in FIG.

  Here, it is assumed that the number Y of lighting cycles is set to 10 in advance by a setting operation of the operation input unit 26 by the user. And the control process of determination of the lighting schedule S by the optical measuring device 200 shall be performed after extraction control of the light transmission point group W (a) and determination of a lighting schedule shown in FIG. That is, a process of changing the lighting schedule S having the number of lighting cycles 7 (X) shown in FIG. 5 to the lighting schedule S having the number of lighting cycles 10 (Y) shown in FIG. 11 will be described.

  First, as shown in FIG. 12, in step S101, it is determined whether or not the number X of lighting cycles matches the number Y of lighting cycles. When the number X of lighting cycles matches the number Y of lighting cycles, the control process for determining the lighting schedule S by the optical measuring device 200 is ended. That is, when the number X of lighting cycles of the lighting schedule S determined in the control process for determining the lighting schedule S shown in FIG. 10 matches the number Y of lighting cycles, the number X of lighting cycles of the lighting schedule S The process is terminated without adjusting. When the cycle number X of the lighting schedule S does not match the preset number Y of lighting cycles, the process proceeds to step S102. If X = 7 and Y = 10, the process proceeds to step S102.

  In step S <b> 102, the control unit 221 extracts a lighting cycle having a large number of light transmitting probes 4 (light transmitting points) that are simultaneously turned on from the lighting schedule S. In the case of the example shown in FIG. 5, lighting cycles with lighting cycle numbers 1 to 4 (lighting cycles including two or more light transmission points) are extracted. Thereafter, the process proceeds to step S103.

  In step S <b> 103, the control unit 221 selects a part of the light transmission probes 4 (light transmission points) from the lighted cycle with many light transmission points that are simultaneously lighted, and the light cycle (lighting cycle) in which the light transmission point is not set. Set the number to 8-10). For example, as shown in FIG. 11, the thirteenth light transmission probe 4 (see FIG. 5) set to the lighting cycle number 1 is set to the lighting cycle number 8 and set to the lighting cycle number 2. The 14th light-transmitting probe 4 is set to the number 9 of the lighting cycle, and the 11th light-transmitting probe 4 set to the number 3 of the lighting cycle is set to the number 10 of the lighting cycle. Thereby, the lighting schedule S in which the number X of lighting cycles becomes 10 (Y) is determined.

  In step S104, the lighting schedule S determined in step S103 is stored in the storage unit 23. Thereafter, the control process for determining the lighting schedule S by the optical measuring device 200 is terminated.

  In the second embodiment, the following effects can be obtained.

  In the second embodiment, as described above, the schedule determination unit 234 causes the light transmission point group W (a to be set so that the number X of lighting cycles of the lighting schedule S becomes the number Y of lighting cycles set by the user. ) Is configured to increase or decrease the number of light transmission probes 4 (light transmission points) included. Thereby, the number X of the lighting cycle of the lighting schedule S can be set to the number Y according to a user's need (usage mode). For example, when it is desired that the number X of lighting cycles be constant even when a plurality of measurements with different total number of light-transmitting probes 4 and measurement conditions are performed, a plurality of light-transmitting probes 4 are selected based on the user's setting operation. It is possible to set the number of lighting cycles X in the same measurement to the same (Y). The other effects of the optical measurement device 200 according to the second embodiment are the same as those of the optical measurement device 100 according to the first embodiment.

(Third embodiment)
Next, with reference to FIG. 13, the structure of the optical measuring device 300 by 3rd Embodiment is demonstrated. A plurality of measurement ranges are set in the optical measurement device 300 of the third embodiment, and the light transmission point extraction unit sets the intervals between the plurality of measurement ranges, the minimum first distance, and the minimum second distance. Based on this, it is configured to extract a light transmission point group that can be turned on simultaneously. Note that in the third embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and second embodiment described above, and descriptions thereof are omitted.

  As shown in FIG. 13, in the optical measuring device 300 according to the third embodiment, a plurality of measurement ranges (measurement ranges MA1 and MA2) are set as measurement conditions. As shown in FIG. 6, the control unit 321 of the optical measurement device 300 is provided with a distance calculation unit 332 and a light transmission point extraction unit 333.

  Here, in the third embodiment, the light transmission point extraction unit 333 lights up simultaneously based on the interval B between the measurement range MA1 and the measurement range MA2, the minimum first distance D, and the minimum second distance d. It is configured to extract a possible light transmission point group W (a). Measurement range MA1 and measurement range MA2 correspond, for example, to the case where measurement ranges are set for the right and left heads, respectively. The interval B is set based on a value (measured value) input by the user. This will be specifically described below.

  As shown in FIG. 13, for example, one light transmitting probe 4 and one light receiving probe 5 are arranged in the holder 6 as the measurement range MA1. In addition, two light transmitting probes 4 and two light receiving probes 5 are arranged in the holder 6 as the measurement range MA2.

  The control unit 321 (the distance calculation unit 332 and the light transmission point extraction unit 333), the interval B between the measurement range MA1 and the measurement range MA2 input by the setting operation of the user operation input unit 26, and the measurement range MA1 and measurement. Information on the arrangement relationship with the range MA2 is acquired. For example, the control unit 321 acquires information that the measurement range MA2 is arranged at a position of the interval B (for example, 3 cm) in the arrow Y2 direction of the measurement range MA1 as information on the interval B and the arrangement relationship.

  The distance calculation unit 332 sets, for example, the first light transmission probe 4 as the first light transmission point E (registers in the light transmission point group W (a)) and the second light transmission probe 4 as the second light transmission point. Set as light spot F. Then, the distance calculation unit 332 calculates the first distance D8 and the second distance d8 in consideration of the information about the interval B and the arrangement relationship.

  The light transmission point extraction unit 333 determines whether or not the first distance D8 and the second distance d8 are greater than or equal to the distance P. In this case, since the second distance d8 is equal to or greater than the distance P, and the first distance D8 is less than the distance P, the light transmission point extraction unit 34 moves the second light transmission probe 4 to the first transmission distance. It is not registered in the light transmission point group W (a) in which the optical probe 4 is registered.

  Next, the distance calculation unit 332 sets the third light transmission probe 4 as the second light transmission point F in a state where the first light transmission probe 4 is set as the first light transmission point E. The distance D9 and the second distance d9 are calculated. In this case, since the first distance D9 and the second distance d9 are equal to or greater than the distance P, the light transmission point extraction unit 333 transmits the third light transmission probe 4 to the transmission light in which the first light transmission probe 4 is registered. Register in the light spot group W (a). Other configurations of the optical measurement device 300 according to the third embodiment are the same as those of the optical measurement device 100 (optical measurement device 200) in the first embodiment (second embodiment).

  In the third embodiment, the following effects can be obtained.

  In the third embodiment, as described above, the light transmission point extraction unit 333 is based on the interval B between the measurement range MA1 and the measurement range MA2, the minimum first distance D, and the minimum second distance d. It is configured to extract a light transmission point group W (a) that can be turned on simultaneously. As a result, even when a plurality of measurement ranges are set, the light transmission point group W (a) that can be turned on simultaneously is extracted while considering the interval B between the plurality of measurement ranges. On the other hand, it can suppress more reliably that the light from the several light transmission probe 4 enters simultaneously. Other effects of the optical measurement device 300 according to the third embodiment are the same as those of the optical measurement device 100 according to the first embodiment.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the first to third embodiments, the example in which the optical measurement device of the present invention is configured separately from the optical measurement unit and the control unit is shown, but the present invention is not limited to this. In the present invention, the optical measurement unit and the control unit may be provided integrally (within the same housing).

  Moreover, in the said 1st-3rd embodiment, the 1st distance and 2nd distance of this invention are distances based on the predetermined space | interval A (refer FIG. 2) and arrangement information of a light transmission probe and a light reception probe. Although an example in which the calculation unit is configured to calculate is shown, the present invention is not limited to this. In this invention, you may comprise so that a 1st distance and a 2nd distance may be calculated by a distance calculation part based on other than the predetermined | prescribed space | interval A and arrangement information of a light transmission probe and a light reception probe. For example, a digitizer capable of acquiring three-dimensional arrangement information is provided, and the first distance and the second distance are calculated by the distance calculation unit based on the arrangement information of the light transmitting probe and the light receiving probe acquired by the digitizer. You may comprise as follows.

  Moreover, in the said 1st-3rd embodiment, the light transmission point extraction part of this invention is made into the light transmission point group which can be lighted simultaneously, and the minimum 1st distance and the minimum 2nd distance are predetermined distance (distance). P) An example in which the light transmission point group is extracted by determining whether or not is equal to or greater than the above is shown, but the present invention is not limited to this. In the present invention, the light transmission point extraction unit is set as a light transmission point group that can be turned on at the same time. You may comprise so that it may judge and extract a light transmission point group. That is, all the first distances and the second distances may be compared with a predetermined distance (distance P).

  Moreover, in the said 1st-3rd embodiment, the light transmission point extraction part of this invention is comprised so that the 1st light transmission probe may be set as a light transmission point initially set as a 1st light transmission point. Although an example has been shown, the present invention is not limited to this. In this invention, you may comprise so that light transmission probes other than No. 1 may be set as a light transmission point initially set as a 1st light transmission point. For example, the light transmission point extraction unit may be configured to set the 14th light transmission probe as the light transmission point that is initially set as the first light transmission point.

  Moreover, in the said 1st-3rd embodiment, the lighting schedule color-coded for every lighting cycle as a lighting schedule display (guidance display) which can identify the light transmission point group allocated to each lighting cycle of this invention. Although an example using the display (see FIG. 9) is shown, the present invention is not limited to this. In this invention, you may use displays other than the display of the lighting schedule color-coded for each lighting cycle as a lighting schedule display (guidance display) which can identify the light transmission point group allocated to each lighting cycle. For example, a display in which the display shape (round shape, square shape, triangular shape, etc.) is changed for each lighting cycle may be used.

  Moreover, in the said 2nd Embodiment, the schedule determination part of this invention extracts the lighting cycle with many light transmission points which light simultaneously from a lighting schedule, and extracts from the lighting cycle with many light transmission points extracted simultaneously. An example in which a part of the light transmission points is set to a lighting cycle to which no light transmission point is assigned, so that the number X of lighting cycles in the lighting schedule matches the number Y of lighting cycles set. However, the present invention is not limited to this. In the present invention, the schedule determination unit does not extract a lighting cycle having a large number of light transmission points that are simultaneously lit from the lighting schedule, and sets a light transmission point to a lighting cycle to which no light transmission point is assigned. You may comprise so that the number X of cycles and the number Y of lighting cycles set may correspond.

  For example, as shown in FIG. 5, when the lighting schedule S with the number of lighting cycles X being 7 is changed to the lighting schedule S with the number of lighting cycles Y being 10, and the distance calculation unit 32 and the light transmission point When the extraction unit 33 first sets the first light transmission probe 4 to the first light transmission point E, the lighting cycle (lighting cycle) in which light transmission points are not assigned in order from the light transmission probe 4 having the largest number. The light transmission point may be set to 8-10). In this case, the setting (assignment) of the 14th light transmission probe 4 is changed from the number 2 to 8 of the lighting cycle, the setting of the 13th light transmission probe 4 is changed from the number 1 to 9 of the lighting cycle, and The twelfth light transmitting probe 4 is configured so that the setting is changed from the number 4 to the number 10 of the lighting cycle.

3 Optical fiber (light transmitting means, light receiving means)
4 Light transmission probe (light transmission point, light transmission means)
5 Light receiving probe (light receiving point, light receiving means)
11 Light source (light transmission means)
12 Photodetector (light receiving means)
13 Light source drive (light transmission means)
15 Main body control unit (lighting control unit)
32, 332 Distance calculation unit (distance calculation means)
33,333 Light transmission point extraction unit (light transmission point extraction means)
34, 234 Schedule determination unit (schedule determination means)
35 lighting schedule display control unit (lighting schedule display means)
100, 200, 300 Optical measuring device

Claims (8)

A plurality of light transmission points arranged so as to have a predetermined distance from each other, and a light transmission means for irradiating the subject with light by turning on at least one of the plurality of light transmission points;
A plurality of light receiving points arranged so as to have a predetermined distance from each other, and receiving the light emitted from the illuminated light transmitting point to the subject and emitted from within the subject to the outside of the subject A light receiving means for receiving light by a point;
Among the plurality of light transmission points, the one light transmission point and the other when the distance between the one light transmission point and the light receiving point corresponding to the other light transmission point is a predetermined distance or more. An optical measuring device comprising: a light transmission point extracting unit that extracts a light transmission point group composed of a plurality of light transmission points as a light transmission point group that can be turned on simultaneously. The first light transmission point of the plurality of light transmission points as at least one light transmission point of the plurality of light transmission points as a first light transmission point that is a reference for calculating a distance; Sets different light transmission points as second light transmission points, a first distance that is a distance between the first light transmission point and the light receiving point corresponding to the second light transmission point, and the second light transmission point. Distance calculating means for calculating a second distance that is a distance between a light spot and the light receiving point corresponding to the first light transmitting point;
The light transmission point extraction unit is configured to extract the light transmission point group in which the first distance and the second distance calculated by the distance calculation unit are equal to or greater than the predetermined distance. The optical measuring device according to 1.   The light transmission point extracting unit is configured such that the minimum first distance of the first distances calculated by the distance calculation unit and the minimum second distance of the second distances are the predetermined distance. The optical measurement device according to claim 2, configured to extract the light transmission point group that is equal to or greater than a distance.   4. The optical measurement device according to claim 2, wherein the distance calculation unit is configured to sequentially calculate the first distance and the second distance with respect to all of the plurality of light transmission points. 5. . Schedule determination means for determining a lighting schedule by assigning one or a plurality of the light transmission point groups extracted by the light transmission point extraction means for each lighting cycle;
5. The lighting control unit according to claim 1, further comprising lighting control means for lighting the assigned one or the plurality of light transmission point groups for each of the lighting cycles based on the lighting schedule. Optical measuring device.   The schedule determination means includes the light transmission included in the one or the plurality of light transmission point groups assigned so that the number of the lighting cycles of the lighting schedule is equal to the number of the lighting cycles set by a user. The optical measurement device according to claim 5, wherein the optical measurement device is configured to increase or decrease the number of points.   The lighting schedule display means which displays the said lighting schedule in the state which can identify the said 1 or several light transmission point group allocated to each said lighting cycle of the said lighting schedule is further provided of Claim 5 or 6 Optical measuring device. Irradiating the subject with light by turning on at least one of the plurality of light transmission points, including a plurality of light transmission points arranged so as to have a predetermined distance from each other;
A plurality of light receiving points arranged so as to have a predetermined distance from each other, and receiving the light emitted from the illuminated light transmitting point to the subject and emitted from within the subject to the outside of the subject Receiving light by a point;
Among the plurality of light transmission points, the one light transmission point and the other when the distance between the one light transmission point and the light receiving point corresponding to the other light transmission point is a predetermined distance or more. And a step of extracting a light transmission point group composed of the light transmission points as a light transmission point group that can be turned on simultaneously.

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