Optical measuring unit and probe unit holder

Abstract

The optical measuring unit (2) comprises a probe unit (3) and a probe unit holder (4) including a probe unit pressing mechanism (40). The probe unit pressing mechanism comprises: an arm (40a) which is elastically deformable and applies a pressing force in the direction of the head surface of the tested person (90) when the head (90a) of the tested person (90) is pressed toward the side opposite to the head surface (91); and a probe unit holding portion (40b) which holds the probe unit so as to be rotatable around an axis (60) of a rotation shaft (50).

Description

Technical Field

[0001] The present invention relates to an optical measuring unit and a probe unit holder, and more particularly to an optical measuring unit and a probe unit holder including a probe unit holding portion for holding a probe unit. Background Art

[0002] Conventionally, there are known optical measuring units and probe unit holders each including a probe unit holding portion for holding a probe unit. Such an optical measuring unit and probe unit holder are disclosed in, for example, Japanese Patent Application Laid-Open No. 2011-050504.

[0003] The measuring device disclosed in Japanese Patent Application Laid-Open No. 2011-050504 includes a light source, a light-transmitting probe, a probe holder, a probe socket, a light-receiving probe, a light-receiving element, a processing unit, a storage unit, a display unit, and an input unit. The measuring device disclosed in Japanese Patent Application Laid-Open No. 2011-050504 is configured so that light emitted from the light source is directed toward the head of a test subject using the light-transmitting probe. Furthermore, the measuring device disclosed in Japanese Patent Application Laid-Open No. 2011-050504 is configured so that light emitted from the light-transmitting probe, which then reflects from the test subject's brain, is incident on the light-receiving element via the light-receiving probe.

[0004] Japanese Patent Application Laid-Open No. 2011-050504 discloses a light transmitting probe and a light receiving probe that are detachably supported by a probe socket provided on a probe holder. The probe socket has a hole provided in the probe holder and is configured to detachably support the light transmitting probe and the light receiving probe.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Laid-Open No. 2011-050504 Summary of the Invention

[0008] Problems to be solved by the invention

[0009] However, in the probe holder described in Japanese Patent Application Laid-Open No. 2011-050504, the light-transmitting probe and the light-receiving probe are supported by extending through the holes of the probe socket. When worn on the head of a test subject, depending on the shape of the test subject's head surface, the probe tips may sometimes float above the test subject's scalp, resulting in a loose contact between the probe tips and the test subject's scalp. This loose contact between the probe tips and the scalp can lead to problems such as measurement light emitted from the light-transmitting probe and passing through the test subject's head failing to enter the light-receiving probe, making accurate measurement difficult.

[0010] The present invention has been made to solve the above-mentioned problems, and one object of the present invention is to provide an optical measuring unit and a probe unit holder that enable accurate measurement by bringing the tip of a probe into close contact with the head of a person under test.

[0011] Solutions for solving problems

[0012] In order to achieve the above-mentioned purpose, the optical measuring unit of the first aspect of the present invention comprises: a probe unit, which includes a light-transmitting probe and a light-receiving probe, the light-transmitting probe irradiates measuring light toward the surface of the head of the tested person, and the light-receiving probe receives the measuring light emitted from the surface of the head of the tested person through the head of the tested person; and a probe unit bracket, which includes a probe unit pressing mechanism, the probe unit pressing mechanism holds the probe unit and presses the probe unit against the head of the tested person, the probe unit pressing mechanism including: an arm portion, which is elastically deformable, and when the probe unit is pressed by the head of the tested person to the side opposite to the surface of the head of the tested person, the arm portion uses the restoring force of the elastic deformation to apply a pressing force to the probe unit in the direction of the surface of the head of the tested person; and a probe unit holding portion, which is connected to the arm portion and holds the probe unit so as to be rotatable around the axis of the rotation axis.

[0013] The probe unit holder of the second aspect of the present invention is used to hold a probe unit, which includes: a light-emitting probe that irradiates measuring light toward the surface of the head of the tested person; and a light-receiving probe that receives the measuring light emitted from the surface of the head of the tested person through the head of the tested person, wherein the probe unit holder has a probe unit pressing mechanism, which holds the probe unit and presses the probe unit against the head of the tested person, and the probe unit pressing mechanism includes: an arm that can be elastically deformed, and when the probe unit is pressed by the head of the tested person to the side opposite to the surface of the head of the tested person, the arm uses the restoring force of the elastic deformation to apply a pressing force to the probe unit in the direction of the surface of the head of the tested person; and a probe unit holding part, which is connected to the arm part and holds the probe unit so as to be rotatable around the axis of the rotation axis.

[0014] Effects of the Invention

[0015] As described above, the optical measurement unit of the first aspect includes: an arm portion that is elastically deformable and utilizes the restoring force of this elastic deformation to apply a pressing force to the probe unit in the direction of the surface of the test subject's head; and a probe unit holder portion that is connected to the arm portion and holds the probe unit. Thus, utilizing the restoring force generated by the elastic deformation of the arm portion, a pressing force is applied to the probe unit in the direction of the surface of the test subject's head via the probe unit holder portion, thereby enabling the probe unit to be in close contact with the surface of the test subject's head. As a result, by ensuring that the tip of the probe is in close contact with the surface of the test subject's head, accurate measurement can be performed.

[0016] Furthermore, by configuring the probe unit holder to rotatably hold the probe unit, the probe unit installation angle can be adjusted according to the curvature of each person's head. This improves the contact between the probe and the surface of the person's head, thereby further enhancing measurement accuracy.

[0017] In addition, as described above, the probe unit holder of the second aspect includes: an arm portion that is elastically deformable and uses the restoring force of the elastic deformation to apply a pressing force in the direction of the head surface of the person being tested to the probe unit; and a probe unit holding portion that is connected to the arm portion and holds the probe unit. Thus, it is possible to provide a probe unit holder that can perform accurate measurements by making the top of the probe close to the head surface of the person being tested, similar to the measuring unit of the first aspect. In addition, by configuring the probe unit holding portion to hold the probe unit so that it can rotate, it is possible to provide a probe unit holder that can further improve the accuracy of measurement, similar to the measuring unit of the first technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic perspective view showing an optical measuring device and a probe unit holder holding an optical measuring unit according to one embodiment.

[0019] Figure 2 This is a block diagram showing the configuration of an optical measuring device, an optical measuring unit, and a probe unit holder according to one embodiment.

[0020] Figure 3 This is a schematic diagram for explaining optical measurement using a light-transmitting probe and a light-receiving probe.

[0021] Figure 4 This is a perspective view of an optical measuring unit according to one embodiment.

[0022] Figure 5 It is a schematic diagram for explaining the direction of elastic deformation of the arm portion according to one embodiment.

[0023] Figure 6 It is along Figure 4Cross-sectional view of line 200-200.

[0024] Figure 7 It is a perspective view of a pressing mechanism according to one embodiment.

[0025] Figure 8 It is an exploded perspective view of a pressing mechanism according to one embodiment.

[0026] Figure 9 It is along Figure 7 Cross-sectional view along line 300-300.

[0027] Figure 10 It is a top view of a pressing mechanism holding a probe unit according to one embodiment.

[0028] Figure 11 This is a schematic diagram of an optical measuring unit according to one embodiment as viewed from the rear.

[0029] Figure 12 It is a schematic diagram for explaining a head-mounted part according to one embodiment.

[0030] Figure 13 This is a perspective view showing the structure of the probe unit in a state where a cover member is provided according to one embodiment.

[0031] Figure 14 This is a perspective view showing the structure of the probe unit in a state where the cover member is not provided according to one embodiment.

[0032] Figure 15 It is along Figure 13 Cross-sectional view of line 400-400.

[0033] Figure 16 Schematic diagram for explaining the procedure for a test subject to wear the optical measuring unit according to one embodiment. DETAILED DESCRIPTION

[0034] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0035] [Present embodiment]

[0036] First, refer to Figure 1 The overall structure of an optical measuring device 100 according to one embodiment will be described. Figure 1 As shown, the optical measuring device 100 is directed to the head surface 91 (see Figure 3 ) Irradiometer photometry 7 (refer to Figure 3 ), and detects the measurement light 7 emitted from the head surface 91 through the head 90a. The optical measuring device 100 measures changes in cerebral blood flow reflecting the brain activity of the test subject 90 based on the intensity (received light amount) of the detected measurement light 7.

[0037] The optical measurement device 100 includes a device body 1 and an optical measurement unit 2. The device body 1 and the optical measurement unit 2 are connected by a cable 70. The optical measurement unit 2 includes a probe unit 3 and a probe unit holder 4. The probe unit holder 4 holds the probe unit 3 and is worn on the head 90a of the test subject 90. In other words, the probe unit 3 is held on the head 90a of the test subject 90.

[0038] like Figure 2 As shown, the device body 1 includes a main control unit 10 and a main storage unit 11. The main control unit 10 executes various programs and controls the entire device body 1. In addition, the main control unit 10 controls the probe unit 3. The main control unit 10 is composed of a computer including a processor and a memory. The main storage unit 11 is configured to store various programs executed by the main control unit 10 and measurement data obtained from measurement results. The main storage unit 11 is composed of a non-volatile memory such as a hard disk drive. In addition, the optical measurement device 100 includes a display unit 12 and an operation input unit 13 connected to the device body 1. The display unit 12 is, for example, a liquid crystal display, and the operation input unit 13 includes input devices such as a keyboard and a mouse.

[0039] In addition, if Figure 2 As shown, the probe unit 3 includes a light transmitting probe 30, a light receiving probe 31, a light output unit 32 and a light detecting unit 33. Figure 2 In the example shown, the probe unit 3 includes two light-transmitting probes 30 and two light-receiving probes 31 .

[0040] The light-transmitting probe 30 is configured to transmit light to the person under test 90 (see Figure 1 ) of the head surface 91 (refer to Figure 3 ) Irradiometer photometry 7 (refer to Figure 3 ). In addition, the light receiving probe 31 is configured to receive the measuring light 7 emitted from the head surface 91 of the tested person 90 through the head 90a of the tested person 90. The light transmitting probe 30 and the light receiving probe 31 have the same structure. The light transmitting probe 30 has one end connected to the light output unit 32 and the other end in contact with the head surface 91 of the tested person 90. In addition, the light receiving probe 31 has one end connected to the light detection unit 33 and the other end in contact with the head surface 91 of the tested person 90. The light transmitting probe 30 and the light receiving probe 31 include, for example, a light guide. The light guide is a component that transmits light from an end on one side to an end on the other side by internal surface reflection. The light guide is formed of, for example, a glass material having a columnar shape.

[0041] The light output unit 32 outputs the measurement light 7 to the light transmitting probe 30. The light output unit 32 includes, for example, a semiconductor laser as a light source.

[0042] The light detecting unit 33 detects the measurement light 7 incident on the light receiving probe 31. The light detecting unit 33 includes, for example, a photomultiplier tube or a photodiode as a detector.

[0043] In addition, if Figure 2 As shown, the probe unit holder 4 includes a probe unit pressing mechanism 40. In addition, in this embodiment, the probe unit holder 4 includes a pressing mechanism holding portion 41, a head covering member 42, and a head wearing portion 43.

[0044] The probe unit pressing mechanism 40 is configured to hold the probe unit 3 and to press the probe unit 3 against the person being tested 90 (see FIG. 1 ). Figure 1 ) head 90a (refer to Figure 1 The detailed structure of the probe unit pressing mechanism 40 and the detailed structure of the probe unit pressing mechanism 40 pressing the probe unit 3 against the head 90a of the person being tested 90 will be described later.

[0045] The pressing mechanism holding portion 41 is configured to hold the probe unit pressing mechanism 40. The detailed structure of the pressing mechanism holding portion 41 holding the probe unit pressing mechanism 40 will be described later.

[0046] The head covering member 42 is configured to hold the pressing mechanism holding portion 41. The detailed structure of the head covering member 42 will be described later.

[0047] The head-mounted portion 43 is configured to be mounted on the head 90a of the test subject 90. The head-mounted portion 43 is configured to fix the probe unit holder 4 to the head 90a of the test subject 90 by being mounted on the head 90a of the test subject 90. The detailed structure of the head-mounted portion 43 will be described later.

[0048] In addition, if Figure 2 As shown in FIG. 1 , the optical measurement unit 2 includes a probe unit control unit 5 for controlling the light output unit 32 and the light detection unit 33. The probe unit control unit 5 is composed of a computer including a processor and a memory. Figure 2 As shown, the probe unit control unit 5 is connected to the light output unit 32 by a cable 71a. In addition, the probe unit control unit 5 is connected to the light detection unit 33 by a cable 71b. In addition, the probe unit control unit 5 is provided in the control unit storage unit 44 (see Figure 11 ), the control unit housing portion 44 is provided in the head cover member 42. In addition, the "probe unit control unit 5" is an example of the "control unit" in the claims.

[0049] (Measurement by optical measuring unit)

[0050] like Figure 3As shown, the light output unit 32 irradiates the measurement light 7 in the wavelength region of near-infrared light from the light-transmitting probe 30 arranged on the head surface 91 of the tested person 90. In addition, the light detection unit 33 detects the measurement light 7 incident from the light-receiving probe 31 arranged on the head surface 91. A measurement point (measurement channel 6) is formed by an area that becomes the path of the measurement light 7 between a light-transmitting probe 30 and a light-receiving probe 31. The wavelength region of near-infrared light is, for example, greater than 700 nm and less than 900 nm. The absorption rate of near-infrared rays in a living body is low, so the measurement light 7 can reach the brain area in the head 90a. In addition, hereinafter, with respect to the area held in the probe unit bracket 4 (refer to Figure 1 ) of the probe unit 3, the direction toward the head surface 91 side (the direction close to the head 90a) is defined as the X1 direction, and the direction toward the side opposite to the head surface 91 (the direction away from the head 90a) is defined as the X2 direction. The X1 direction and the X2 direction are collectively referred to as the X direction.

[0051] Here, reflecting the brain activity of the test subject 90, when the amount of hemoglobin in the blood increases at the activated site in the brain, the amount of hemoglobin absorbed by the hemoglobin increases. Therefore, based on the intensity of the acquired measurement light 7, the change in the hemoglobin amount accompanying brain activity can be acquired. In addition, hemoglobin is divided into oxyhemoglobin, which is bound to oxygen, and deoxyhemoglobin, which is not bound to oxygen, and these two have different absorption characteristics. Therefore, the optical measurement device 100 uses measurement light 7 of multiple wavelengths (for example, three wavelengths of 780 nm, 805 nm, and 830 nm) that take into account the differences in absorption characteristics to perform measurement. Based on the intensity (intensity of light received) of the measurement light 7 obtained for each wavelength, the temporal changes in the amount of each hemoglobin and the total amount are calculated.

[0052] As a result, based on the intensity (received light intensity) of the measurement light 7 incident on the light-receiving probe 31, changes in hemoglobin levels accompanying brain activity, that is, changes in blood flow and the activation state of oxygen metabolism, can be noninvasively acquired. The optical measurement device 100 includes multiple light-transmitting probes 30 and multiple light-receiving probes 31. By measuring brain regions at multiple points (multiple measurement channels 6) using multiple light-transmitting probes 30 and multiple light-receiving probes 31, a two-dimensional distribution of which brain regions are active in what manner can be acquired.

[0053] Optical measurement is started, for example, by an input operation via the operation input unit 13. The main control unit 10, which has received the input operation, controls the probe unit control unit 5 to start the measurement. When the measurement starts, the probe unit control unit 5 controls the light output unit 32 so that the measurement light 7 is output from the probe unit control unit 5 to each light transmitting probe 30 in sequence at a predetermined cycle. In addition, the probe unit control unit 5 controls the light detection unit 33 so that the measurement light 7 is detected from the light receiving probe 31 that constitutes the measurement channel 6 together with the light transmitting probe 30 that outputs the measurement light 7 in synchronization with the output of the measurement light 7. In addition, the probe unit control unit 5 transmits the detection signal detected by the light detection unit 33 to the main control unit 10. Based on the detection signal, the main control unit 10 analyzes the change in the hemoglobin amount accompanying brain activity and controls the display unit 12 to display the measurement result. Optical measurement ends, for example, after a predetermined measurement time has passed or when a predetermined task has been performed. The main body control unit 10 , which has received the input operation for ending the measurement, controls the probe unit control unit 5 to end the measurement, thereby ending the optical measurement.

[0054] (Probe unit bracket)

[0055] like Figure 4 As shown, the probe unit pressing mechanism 40 includes an arm portion 40 a and a probe unit holding portion 40 b .

[0056] The arm portion 40a is fixed to the pressing mechanism holding portion 41. The arm portion 40a is connected to the probe unit holding portion 40b. The arm portion 40a is formed of a resin material and is elastically deformable. The detailed structure of the arm portion 40a will be described later.

[0057] The probe unit holding portion 40b is configured to hold the probe unit 3. The probe unit holding portion 40b is connected to the arm portion 40a. The detailed structure of the probe unit holding portion 40b holding the probe unit 3 will be described later.

[0058] In addition, if Figure 4 As shown, the head covering member 42 has a shape that covers the head 90a of the test person 90 near the measurement site. In this embodiment, the head covering member 42 has a shape that covers the head 90a of the test person 90 as a whole. The head covering member 42 has a so-called helmet-like shape. In addition, the head covering member 42 is formed from a resin material and has light-shielding properties. In addition, the meaning of "near the measurement site" includes both the location of the measurement site itself and the vicinity of the measurement site. In this embodiment, the arm portion 40a and the probe unit holding portion 40b also have light-shielding properties.

[0059] In addition, a flange portion 42a is provided at the front of the head cover member 42. In addition, a control portion storage portion 44 (see Figure 11 ). Thus, when the person being tested 90 wears the probe unit holder 4, the front-back direction of the probe unit holder 4 can be recognized.

[0060] In addition, in this embodiment, Figure 4 As shown, there are multiple probe units 3, each corresponding to each measurement site on the head 90a of the person being tested 90. In addition, there are multiple probe unit pressing mechanisms 40, each corresponding to each measurement site, so as to hold one probe unit 3 at each measurement site. Figure 4 , an example is shown in which the optical measurement unit 2 includes four probe units 3 and four probe unit pressing mechanisms 40 in order to be able to measure four measurement locations. Figure 4 In the example shown, the measurement positions are set at positions F3, F4, P3, and P4 of the international 10-20 method.

[0061] (Arm structure)

[0062] Figure 5 4 is a cross-sectional view of the connection surface 40c between the arm portion 40a and the probe unit holding portion 40b. Figure 5 As shown, arm portion 40a has a columnar shape. Furthermore, arm portion 40a has an end portion 140 on one side and an end portion 141 on the other side. Furthermore, a recess 40d is provided on the inner surface of arm portion 40a. This improves the mechanical strength of arm portion 40a. Furthermore, recess 40d also serves as a passage for cables 71a and 71b to pass through.

[0063] In addition, if Figure 5 As shown, arm portion 40a has a curved shape. Therefore, arm portion 40a can elastically deform in the directions of arrows 80a and 80b. In addition, the amount of elastic deformation in the directions of arrows 81a and 81b is smaller than the amount of elastic deformation in the directions of arrows 80a and 80b. In other words, arm portion 40a is less likely to elastically deform in the directions of arrows 81a and 81b. In addition, arm portion 40a is less likely to torsional deform about axis 60, which is the direction in which arm portion 40a extends, as shown by arrow 82. That is, in this embodiment, arm portion 40a is configured to be elastically deformable primarily in the directions of arrows 80a and 80b.

[0064] In this embodiment, if Figure 6 As shown, one end 140 of the arm 40a is connected to the probe unit holding portion 40b. The other end 141 of the arm 40a is fixed to the pressing mechanism holding portion 41. That is, the arm 40a holds the probe unit 3 in a cantilevered manner.

[0065] Furthermore, in this embodiment, the other end 141 of the arm portion 40a is fixed to the pressing mechanism holding portion 41. The arm portion 40a may be fixed to the pressing mechanism holding portion 41 by any method. In this embodiment, for example, the arm portion 40a is fixed to the pressing mechanism holding portion 41 by screwing. That is, in this embodiment, the arm portion 40a is fixed to the pressing mechanism holding portion 41 in a manner that prevents rotation.

[0066] In addition, if Figure 6 As shown, the arm portion 40a has a shape that is curved so as to protrude toward the side opposite to the head surface 91 of the person being tested 90. The side opposite to the head surface 91 of the person being tested 90 is a direction from the head surface 91 of the person being tested 90 toward the inner peripheral surface 42c of the head covering member 42. Figure 6 In the example shown, the side opposite to the head surface 91 of the test subject 90 is the direction indicated by the arrow 80a. Figure 6 In the illustrated example, the arm portion 40 a has a shape that is curved so as to protrude in a direction from the head surface 91 of the test subject 90 toward the inner peripheral surface 42 c .

[0067] like Figure 6 As shown, an opening 42b is provided in the head covering member 42. The probe unit 3 is held by the probe unit pressing mechanism 40 in a state where the light transmitting probe 30 and the light receiving probe 31 pass through the opening 42b. Specifically, the probe unit pressing mechanism 40 holds the probe unit 3 in a state where the top ends of the light transmitting probe 30 and the light receiving probe 31 protrude toward the head surface 91 of the person being tested 90 from the inner peripheral surface 42c of the head covering member 42. Figure 6 In the example, the probe unit pressing mechanism 40 holds the probe unit 3 so that the tips of the light transmitting probe 30 and the light receiving probe 31 protrude from the inner peripheral surface 42c of the head cover member 42 in the direction indicated by the arrow 80b.

[0068] Since the top ends of the light-transmitting probe 30 and the light-receiving probe 31 are fixed in a state where they protrude toward the head surface 91 of the tested person 90 more than the inner peripheral surface 42c of the head covering member 42, when the tested person 90 wears the probe unit bracket 4, the probe unit 3 is pressed by the head 90a of the tested person 90 toward the side opposite to the head surface 91 of the tested person 90 (in the direction indicated by the arrow 83).

[0069] The arm portion 40a is configured to be elastically deformable primarily in the directions of arrows 80a and 80b. Therefore, when the probe unit 3 is pressed by the head 90a of the person under test 90 toward the side opposite to the head surface 91 of the person under test 90 (in the direction indicated by arrow 83), the arm portion 40a utilizes the restoring force of the elastic deformation to apply a pressing force in the direction of the head surface 91 of the person under test 90 (in the direction indicated by arrow 80b) to the probe unit 3. Specifically, when the probe unit 3 is pressed in the direction indicated by arrow 83, the arm portion 40a bends in the direction indicated by arrow 80a. At this time, the arm portion 40a utilizes the restoring force of the elastic deformation to apply a force in the direction indicated by arrow 80b to the probe unit 3.

[0070] In addition, in this embodiment, Figure 6 As shown, the pressing mechanism holding portion 41 is fixed to the top side of the head covering member 42. Therefore, the end 141 on the other side of the arm portion 40a is fixed to the top side of the head covering member 42. Therefore, the probe unit 3 is held on the end side of the probe unit holder 4 opposite to the top side of the head 90a of the tested person 90, and the cantilevered arm portion 40a is configured to be arranged on the top side of the head 90a of the tested person 90 when the tested person 90 wears the probe unit holder 4. In addition, in the present embodiment, for example, when the head covering member 42 has a hemispherical shape, the arm portion 40a is fixed to the pressing mechanism holding portion 41 in a manner from the top side of the head covering member 42 toward a direction along the meridian direction.

[0071] (Probe unit holding portion)

[0072] like Figure 7 As shown in FIG. 4 , the probe unit holding portion 40 b has an opening 40 e. In this embodiment, the probe unit holding portion 40 b has an annular shape. The probe unit holding portion 40 b is configured to hold the probe unit 3 inside the opening 40 e.

[0073] In addition, if Figure 8 As shown, the probe unit holding portion 40b is configured to be split in the penetration direction of the probe unit 3, and the probe unit 3 is maintained to be detachable. In other words, the probe unit holding portion 40b is configured to be split in the direction (X1 direction) toward the head surface 91 side (the direction close to the head 90a) and the direction (X2 direction) toward the side opposite to the head surface 91 (the direction away from the head 90a).

[0074] like Figure 8As shown, in this embodiment, the probe unit holding portion 40b is configured to hold the probe unit 3 inside the opening 40e so that it can rotate around the axis 60 of the rotation shaft 50. Specifically, the probe unit holding portion 40b holds the probe unit 3 in such a manner that the extending direction of the rotation shaft 50 becomes a direction orthogonal to the light transmitting probe 30 and the light receiving probe 31. Figure 8 In the example shown, the extending direction of the light transmitting probe 30 and the light receiving probe 31 is along the storage portion 34 (see Figure 13 )'s central axis 62 (refer to Figure 14 ) direction. Therefore, in Figure 8 In the illustrated example, the probe unit holding portion 40 b holds the probe unit 3 so that the axis 60 of the rotation shaft 50 is oriented orthogonal to the central axis 62 .

[0075] In addition, in the present embodiment, the probe unit holding portion 40b that can be divided in the penetration direction of the probe unit 3 includes a first holding portion 142 and a second holding portion 143, the first holding portion 142 is connected to the arm portion 40a, and the first holding portion 142 and the second holding portion 143 are configured to hold the rotation shaft 50 by clamping the rotation shaft 50 in the penetration direction (X direction) of the probe unit 3, thereby holding the probe unit 3 so as to be rotatable around the axis 60 of the rotation shaft 50. That is, in Figure 8 In the illustrated example, the first holding portion 142 and the second holding portion 143 hold the probe unit 3 so as to be rotatable in the direction of the arrow 84 .

[0076] In addition, if Figure 9 As shown, the probe unit holding portion 40 b has a passage portion 144 for passing a cable 71 a connecting the light output portion 32 and the probe unit control portion 5 and a cable 71 b connecting the light detection portion 33 and the probe unit control portion 5 .

[0077] like Figure 10 As shown, the probe unit holding portion 40b holds the probe unit 3 in such a manner that the extension direction of the rotation axis 50 becomes a direction orthogonal to the extension direction of the arm portion 40a. That is, in this embodiment, the probe unit holding portion 40b holds the probe unit 3 in such a manner that the extension direction of the rotation axis 50 becomes a direction orthogonal to the extension direction of the arm portion 40a and is a direction orthogonal to the light transmitting probe 30 and the light receiving probe 31. In addition, Figure 10 In the example shown, the arm portion 40a extends along the direction of extension of the axis 60. Figure 10 In the illustrated example, the direction perpendicular to the extending direction of the arm portion 40 a is a direction perpendicular to the axis 60 .

[0078] In this embodiment, the rotation shaft 50 is provided in the probe unit 3. Specifically, the rotation shaft 50 is provided in the storage portion 34 (see Figure 13 ) That is, the probe unit holding portion 40 b is configured to hold the storage portion 34 so as to be rotatable around the axis 60 of the rotation shaft 50 .

[0079] (Control unit storage unit)

[0080] like Figure 11 As shown, a control unit storage portion 44 is provided behind the head cover member 42. The control unit storage portion 44 stores the probe unit control unit 5. The light output unit 32 and light detection unit 33 of each probe unit 3 are connected to the probe unit control unit 5 via cables 71a and 71b, respectively.

[0081] (Headwear)

[0082] like Figure 12 As shown, the head wearing portion 43 includes a band 43a and an adjustment portion 43b.

[0083] The belt 43a has an annular shape and is configured to surround the head 90a of the test subject 90 from the forehead to the back of the head in the circumferential direction.

[0084] The adjustment portion 43b is configured to adjust the circumferential size of the strap 43a. The adjustment portion 43b includes, for example, a dial-type adjustment member. After wearing the optical measurement unit 2, the test subject 90 secures the optical measurement unit 2 to the head 90a by adjusting the circumferential size of the strap 43a using the adjustment portion 43b. The adjustment portion 43b is provided on the strap 43a at a position behind the head covering member 42.

[0085] like Figure 12 As shown, the head-mounted part 43 further includes a head-mounted part holding portion 43c. The head-mounted part holding portion 43c has a shape that surrounds the head 90a of the test subject 90. The head-mounted part holding portion 43c has a gap that can accommodate the light-transmitting probe 30 and the light-receiving probe 31 provided in the probe unit 3. The head-mounted part holding portion 43c is configured to connect the belt 43a and the head covering member 42 at the position indicated by the circle 45a and the position indicated by the circle 45b.

[0086] (Probe unit)

[0087] like Figure 13 As shown, the probe unit 3 includes a housing portion 34, a cover member 35, and a hair 92 that is spread apart from the head surface 91 (see FIG. Figure 3 ) of the comb-shaped member 36. The storage portion 34 is configured to store the light-transmitting probe 30 and the light-receiving probe 31. In addition, two gripping portions 34a are provided in the storage portion 34. In addition, the two gripping portions 34a are arranged with the central axis 62 (refer to Figure 14 ) are positions where the centers are opposite to each other. In addition, the storage portion 34 has light-shielding properties.

[0088] The cover member 35 is provided in the X2 direction of the storage section 34. Furthermore, the cover member 35 is provided to cover the light transmitting probe 30 and the light receiving probe 31 provided inside the storage section 34 from the outside. Specifically, the cover member 35 has a cylindrical shape with only the X1 direction side open. Furthermore, the cover member 35 is made of resin (e.g., ABS resin) and has light-shielding properties.

[0089] The comb-like member 36 includes a plurality of pin members 36a and a pin member holding portion 36b that holds the plurality of pin members 36a. The pin members 36a are formed from a resin material. Furthermore, the pin member holding portion 36b is formed from a resin material and is elastically deformable. The plurality of pin members 36a are provided on the pin member holding portion 36b so as to protrude from the housing 34 toward the X1 direction (the head surface 91 side). The pin members 36a are configured to part the hair 92 on the head surface 91. The pin members 36a are formed from a resin material (e.g., silicone rubber) having an elongated, rod-like (needle-like) shape suitable for parting the hair 92. The pin members 36a are provided so as to protrude from the lower surface (the X1 direction side) of the housing 34 toward the X1 direction. The pin member holding portion 36b is fixed to the housing 34. The tip 136 (the X1 direction side end) of the pin member 36a is a smooth surface with roundness, such as a spherical shape.

[0090] like Figure 14 As shown in FIG. 1 , the light transmitting probe 30 and the light receiving probe 31 are respectively provided so as to protrude in the X1 direction from the housing portion 34 toward the head surface 91. Figure 14 In the structural example, a light output unit 32 is provided on the upper portion of each light-transmitting probe 30. Figure 14 In the structural example, a light detection unit 33 is provided on the upper portion of each light receiving probe 31.

[0091] In this embodiment, the probe unit 3 is configured to be rotated about the central axis 62 while being disposed on the head surface 91, thereby enabling the plurality of pin members 36a to part the hair 92. The test subject 90 grasps the gripping portion 34a and rotates the probe unit 3 (housing portion 34) about the central axis 62 to part the hair 92.

[0092] like Figure 15As shown, the storage portion 34 includes a probe holding portion 34c, a snap-fitting member 34d, and a comb-shaped member holding portion 34e for holding the light-transmitting probe 30 and the light-receiving probe 31. In addition, the probe unit 3 includes a spring member 37 that applies force to the light-transmitting probe 30 and the light-receiving probe 31 in the X1 direction. In addition, the snap-fitting member 34d is configured to snap-fit ​​with the probe holding portion 34c (the end portion of the probe holding portion 34c on the X1 direction side). The spring member 37 is provided in a manner that applies a force to the snap-fitting member 34d from the X2 direction side. That is, the light-transmitting probe 30 and the light-receiving probe 31 are respectively subjected to the force from the spring member 37 via the snap-fitting member 34d and the probe holding portion 34c.

[0093] Specifically, when the light transmitting probe 30 and the light receiving probe 31 are each able to move in the X1 direction by releasing the holding state of the probe holding portion 34c, the spring member 37 applies a force to the light transmitting probe 30 and the light receiving probe 31. Furthermore, the holding state refers to a state in which the light transmitting probe 30 and the light receiving probe 31 are held by the probe holding portion 34 so as not to be in close contact with the head surface 91 of the person being tested 90.

[0094] In this embodiment, the light transmitting probe 30 and the light receiving probe 31 are each configured so that, upon release of the probe holding portion 34c, the spring member 37 biases the probe toward the head surface 91, where the hairs 92 have been parted by the plurality of pin members 36a. Specifically, the pin members 36a, which rotate in conjunction with the housing 34, first part the hairs 92. Then, by further rotation of the housing 34, the probe holding portion 34c is released, and the spring member 37 biases the probe toward the head surface 91, where the hairs 92 have been parted.

[0095] In addition, if Figure 13 As shown, the comb-like member holding portion 34e has a concave shape. Furthermore, a protrusion 36c is provided on the outer periphery of the pin member holding portion 36b, protruding outward in the normal direction of the pin member holding portion 36b. The protrusion 36c engages with the comb-like member holding portion 34e, thereby holding the comb-like member 36 in the storage portion 34. In other words, the comb-like member 36 is held in the probe unit 3 by the protrusion 36c engaging with the comb-like member holding portion 34e.

[0096] In this embodiment, the comb-like member 36 is configured to be elastically deformable. Specifically, the pin member retaining portion 36b is configured to be elastically deformable toward the inner circumferential surface. Therefore, by having the operator elastically deform the pin member retaining portion 36b toward the inner circumferential surface, the engagement between the protrusion 36c and the comb-like member retaining portion 34e is released, thereby allowing the comb-like member 36 to be removed from the probe unit 3. In other words, the comb-like member 36 is configured to be removable relative to the probe unit 3. Therefore, the comb-like member 36 can be replaced for each person being tested 90, and thus the inspection can be performed while maintaining the sanitary condition of the pin member 36a that is in direct contact with the person being tested 90.

[0097] (How the test subject wears the optical measurement unit)

[0098] Next, refer to Figure 16 A method for the test subject 90 to wear the optical measurement unit 2 will be described.

[0099] First, the person under test 90 wears the probe unit holder 4 on the head 90a. At this time, the comb-shaped member 26 (pin member 36a) provided on each probe unit 3 (see Figure 14 ) and the head surface 91 (refer to Figure 3 ) are in close contact. Next, the person under test 90 adjusts the length of the belt 43a using the adjustment portion 43b. This secures the probe unit holder 4 to the head 90a of the person under test 90.

[0100] Since the probe unit holder 4 is fixed to the head 90a of the person being tested 90, a pressing force in the direction indicated by the arrow 83 is continuously applied to the probe unit 3. When the probe unit 3 is pressed in the direction indicated by the arrow 83, the arm 40a applies a pressing force in the direction indicated by the arrow 80b, so that the probe unit 3 is in close contact with the head 90a of the person being tested 90.

[0101] Next, the person under test 90 rotates the probe unit 3 in the direction of arrow 85a or arrow 85b to adjust the angle of the probe unit 3. The person under test 90 can adjust the optimal angle of the probe unit 3 based on the contact state of the pin member 36a and the like.

[0102] After the angle of the probe unit 3 is adjusted, the person being tested 90 parted the hair 92 by rotating the probe unit 3 about the central axis 62 as indicated by arrow 86. After the hair 92 has been parted, the person being tested 90 further rotates the probe unit 3 to bring the light-transmitting probe 30 and the light-receiving probe 31 into close contact with the head surface 91.

[0103] Since the probe units 3 are provided corresponding to the respective measurement sites, the person being tested 90 can easily place the probe units 3 at the measurement sites by wearing the probe unit holder 4 .

[0104] Furthermore, the probe unit pressing mechanism 40 holds the probe unit 3 so that it can rotate along the axis 61 and the central axis 62 of the rotation shaft 50. This allows the test subject 90 to adjust the contact angles of the light transmitting probe 30 and the light receiving probe 31 with respect to the hair 92 and the head surface 91. Therefore, by wearing the optical measurement unit 2 using the above-described steps, even when the test subject 90 wears the optical measurement unit 2 alone, the reproducibility of the probe unit 3 placement can be improved, and the close contact between the light transmitting probe 30 and the light receiving probe 31 and the head surface 91 can be improved, thereby enabling highly accurate and reproducible measurement.

[0105] (Effects of this embodiment)

[0106] In this embodiment, the following effects can be obtained.

[0107] In this embodiment, as described above, the optical measurement unit 2 includes: a probe unit 3 including a light transmitting probe 30 and a light receiving probe 31, wherein the light transmitting probe 30 irradiates the measuring light 7 toward the head surface 91 of the person being tested 90, and the light receiving probe 31 receives the measuring light 7 emitted from the head surface 91 of the person being tested 90 through the inside of the head 90a of the person being tested 90; and a probe unit holder 4 including a probe unit pressing mechanism 40, which holds the probe unit 3 and presses the probe unit 3 against the person being tested. The probe unit pressing mechanism 40 is configured to press against the head 90a of the person being tested 90. The probe unit pressing mechanism 40 includes an elastically deformable arm 40a. When the probe unit 3 is pressed by the head 90a of the person being tested 90 toward the side opposite to the head surface 91 of the person being tested 90, the arm 40a utilizes the restoring force of the elastic deformation to apply a pressing force in the direction of the head surface 91 of the person being tested 90; and a probe unit holding mechanism 40b connected to the arm 40a to hold the probe unit 3 rotatable about the axis 60 of the rotation shaft 50. Thus, the restoring force generated by the elastic deformation of the arm 40a applies a pressing force in the direction of the head surface 91 of the person being tested 90 via the probe unit holding mechanism 40b, thereby bringing the probe unit 3 into close contact with the head surface 91 of the person being tested 90. As a result, accurate measurement is possible by bringing the tip of the probe into close contact with the head surface 91 of the person being tested 90.

[0108] In addition, the probe unit 3 is held rotatably by the probe unit holding portion 40b, so that the installation angle of the probe unit 3 can be adjusted according to the curvature of the head 90a of each test person 90. As a result, the close contact between the probe and the head surface 91 of the test person 90 can be improved, thereby further improving the measurement accuracy.

[0109] In addition, in the present embodiment, as described above, the probe unit holder 4 is a probe unit holder for holding the probe unit 3, and the probe unit 3 includes: a light-transmitting probe 30 for irradiating the measuring light 7 to the head surface 91 of the tested person 90; and a light-receiving probe 31 for receiving the measuring light 7 emitted from the head surface 91 of the tested person 90 through the head 90a of the tested person 90, and the probe unit holder 4 is provided with a probe unit pressing mechanism 40, which holds the probe unit 3 and presses the probe unit 3 against The probe unit pressing mechanism 40 includes an elastically deformable arm 40a that applies a pressing force in the direction of the head surface 91 of the test subject 90 when the probe unit 3 is pressed by the head 90a of the test subject 90 toward the side opposite to the head surface 91 of the test subject 90 using the restoring force of the elastic deformation; and a probe unit holding portion 40b that is connected to the arm 40a and holds the probe unit 3 so that it can rotate about the axis 60 of the rotation shaft 50. Thus, a probe unit holder 4 is provided that enables accurate measurement by bringing the tip of the probe into close contact with the head surface 91 of the test subject 90, similar to the above-mentioned optical measurement unit 2.

[0110] Furthermore, by rotatably holding the probe unit 3 by the probe unit holding portion 40 b , it is possible to provide the probe unit holder 4 capable of further improving the measurement accuracy similarly to the optical measurement unit 2 .

[0111] Furthermore, in the above-described embodiment, by configuring as follows, further effects as described below are obtained.

[0112] That is, in this embodiment, as described above, the probe unit holder 4 also includes a pressing mechanism holding portion 41 for holding the probe unit pressing mechanism 40, and the end 140 on one side of the arm 40a is connected to the probe unit holding portion 40b, and the end 141 on the other side is fixed to the pressing mechanism holding portion 41, thereby cantilevering the probe unit 3. Thus, even when the probe unit 3 is cantilevered by the arm 40a, a restoring force in the direction of the head surface 91 of the person being tested 90 can be applied to the probe unit 3. As a result, compared with the structure of holding the probe unit 3 in a double-supported manner, the structure of the pressing mechanism holding portion 41 can be simplified. In addition, by fixing the arm 40a to the pressing mechanism holding portion 41, the probe unit 3 is held by the arm 40a and the probe unit holding portion 40b, thereby maintaining the relative position of the pressing mechanism holding portion 41 and the probe unit 3 at a certain position. As a result, the reproducibility of the configuration of the probe unit 3 when the person being tested 90 wears the probe unit holder 4 on the head 90a can be improved.

[0113] In addition, in this embodiment, as described above, the probe unit 3 is held on the end side of the probe unit holder 4 opposite to the top side of the head 90a of the test subject 90, and the cantilevered arm 40a is configured so that when the test subject 90 wears the probe unit holder 4, it is arranged on the top side of the head 90a of the test subject 90. As a result, compared with a structure in which the probe unit 3 is held on the top side of the head 90a of the test subject 90 in the probe unit holder 4, the space for fixing the arm 40a in the probe unit holder 4 can be increased. Therefore, compared with a structure in which the probe unit 3 is held on the top side of the head 90a of the test subject 90, the length of the arm 40a can be increased. As a result, by increasing the length of the arm 40a, the restoring force generated by the elastic deformation of the arm 40a can be increased, thereby improving the degree of contact between the light transmitting probe 30 and the light receiving probe 31 and the head surface 91.

[0114] Furthermore, in this embodiment, as described above, the arm portion 40a has a shape that is curved so as to protrude toward the side opposite to the head surface 91 of the person being tested 90, and is fixed to the pressing mechanism holding portion 41 in a manner that is non-rotatable. Thus, since the arm portion 40a has a shape that is curved so as to protrude toward the side opposite to the head surface 91 of the person being tested 90, the restoring force of the elastic deformation of the arm portion 40a can be easily applied in the direction toward the head surface 91 of the person being tested 90. Furthermore, by fixing the arm portion 40a to the pressing mechanism holding portion 41 in a manner that is non-rotatable, the reproducibility of the arrangement of the probe unit 3 can be easily improved.

[0115] In addition, in this embodiment, as described above, the probe unit holding portion 40b has an opening 40e, and is configured to hold the probe unit 3 inside the opening 40e so as to be rotatable around the axis 60 of the rotation shaft 50. Thus, since the probe unit 3 is held rotatable inside the opening 40e, the probe unit holding portion 40b can support both ends of the rotation shaft 50 of the probe unit 3. As a result, compared with a structure that only supports one end of the rotation shaft 50 of the probe unit 3, the probe unit 3 can be stably rotated.

[0116] Furthermore, in this embodiment, as described above, the probe unit 3 includes a housing portion 34 for housing the light transmitting probe 30 and the light receiving probe 31, and the probe unit holding portion 40b is configured to hold the housing portion 34 so that it can rotate about the axis 60 of the rotation shaft 50. Thus, by holding the housing portion 34 rotatably by the probe unit holding portion 40b, the positions of the light transmitting probe 30 and the light receiving probe 31 can be adjusted collectively. As a result, compared to a configuration in which the positions of the light transmitting probe 30 and the light receiving probe 31 are adjusted separately, the burden on the operator can be reduced.

[0117] In addition, in the present embodiment, as described above, the probe unit holding portion 40b holds the probe unit 3 in such a manner that the extension direction of the rotation axis 50 is orthogonal to the extension direction of the arm portion 40a and is orthogonal to the light transmitting probe 30 and the light receiving probe 31. Thus, the extension direction of the rotation axis of the probe unit 3 can be set to the tangent direction of the head surface 91 of the person being tested 90. As a result, by rotating the probe unit 3, the extension direction of the light transmitting probe 30 and the light receiving probe 31 can be adjusted to the normal direction of the head surface 91 of the person being tested 90, thereby making the light transmitting probe 30 and the light receiving probe 31 more closely attached to the head surface 91 of the person being tested 90.

[0118] In addition, in this embodiment, as described above, the probe unit holding portion 40b can be split in the direction of penetration of the probe unit 3, and is configured to hold the probe unit 3 so as to be detachable. Thus, since the probe unit holding portion 40b can be split in the direction of penetration of the probe unit 3, the probe unit 3 can be easily detached even when the probe unit holder 4 is worn on the head 90a of the person being tested 90.

[0119] In addition, in the present embodiment, as described above, the rotation axis 50 is provided on the probe unit 3, and the probe unit holding portion 40b that can be divided in the direction of penetration of the probe unit 3 includes a first holding portion 142 and a second holding portion 143, the first holding portion 142 being connected to the arm portion 40a, and the first holding portion 142 and the second holding portion 143 being configured to hold the rotation axis 50 by sandwiching the rotation axis 50 in the direction of penetration of the probe unit 3, thereby holding the probe unit 3 so as to be rotatable around the axis 60 of the rotation axis 50. Thus, even in a structure in which the inclination of the light transmitting probe 30 and the light receiving probe 31 can be adjusted by rotating the probe unit 3 around the rotation axis 50, the probe unit 3 can be easily attached and detached. As a result, the convenience of the user can be improved.

[0120] In addition, in this embodiment, as described above, the probe unit 3 further includes a light output unit 32 that outputs the measurement light 7 to the light-transmitting probe 30 and a light detection unit 33 that detects the measurement light 7 incident on the light-receiving probe 31, and a probe unit control unit 5 (control unit) that controls the light output unit 32 and the light detection unit 33. The probe unit holding portion 40b has a passage 144 for passing the cable 71a connecting the light output unit 32 and the probe unit control unit 5 and the cable 71b connecting the light detection unit 33 and the probe unit control unit 5. Thus, the cables 71a and 71b can be connected to the probe unit control unit 5 while passing through the passage 144. As a result, the cables 71a and 71b can be easily handled.

[0121] Furthermore, in this embodiment, as described above, the probe unit holder 4 further includes a head covering member 42 that holds the pressing mechanism retaining portion 41. The head covering member 42 is shaped to cover the vicinity of the measurement site on the head 90a of the person being tested 90 and has light-shielding properties. Thus, the head covering member 42 can suppress interference light from the head surface 91 of the person being tested 90 from entering the measurement site. As a result, since interference light is suppressed, it is also possible to prevent interference light from entering the light-receiving probe 31, thereby improving measurement accuracy.

[0122] In addition, in this embodiment, as described above, the probe unit holder 4 also includes a head wearing portion 43 that is worn on the head 90a of the person being tested 90. The head wearing portion 43 includes a ring-shaped belt 43a and an adjustment portion 43b that can adjust the size of the belt 43a in the circumferential direction. Thus, the size of the belt 43a can be adjusted according to the size of the head 90a of the person being tested 90 in the circumferential direction, so that the probe unit holder 4 can be reliably fixed to the head 90a of the person being tested 90.

[0123] Furthermore, in this embodiment, as described above, multiple probe units 3 are provided, one corresponding to each measurement site on the head 90a of the person being tested 90. Multiple probe unit pressing mechanisms 40 are provided, one corresponding to each measurement site, so that a probe unit 3 is held at each measurement site. Thus, since a probe unit 3 and a probe unit pressing mechanism 40 are provided corresponding to each measurement site, the tip of the probe can be brought into close contact with the head surface 91 of the person being tested 90 at each measurement site. As a result, even when measuring multiple measurement sites, accurate measurements can be performed at each measurement site.

[0124] [Modification]

[0125] The embodiments disclosed herein are to be considered in all respects as illustrative and non-restrictive. The scope of the present invention is indicated by the claims rather than the description of the embodiments above, and includes all modifications (variations) within the meaning and scope equivalent to the claims.

[0126] For example, although the example of the structure in which the arm portion 40a cantilever-holds the probe unit 3 is shown in the above embodiment, the present invention is not limited thereto. As long as the restoring force of elastic deformation can be utilized to press the probe unit 3 toward the head surface 91 of the person being tested 90, for example, the structure in which the probe unit 3 is double-supported by two arm portions 40a can also be employed.

[0127] Furthermore, while the above embodiment illustrates an example of a configuration in which the arm 40a is positioned on the top side of the head 90a of the person under test 90, the present invention is not limited thereto. For example, the arm 40a may be positioned circumferentially around the head 90a of the person under test 90. The arm 40a may be positioned in any manner as long as the restoring force of elastic deformation can be used to press the probe unit 3 toward the head surface 91 of the person under test 90.

[0128] Furthermore, while the above embodiment illustrates an example of a structure in which the arm portion 40a is curved so as to protrude toward the side opposite to the head surface 91 of the person under test 90, the present invention is not limited thereto. For example, the arm portion 40a may also have a shape that curves along the head 90a of the person under test 90. The arm portion 40a may have any shape as long as the restoring force of elastic deformation can be used to press the probe unit 3 toward the head surface 91 of the person under test 90.

[0129] In addition, although the above embodiment shows an example of a structure in which the probe unit holding portion 40b has an opening 40e, the present invention is not limited thereto. For example, the probe unit holding portion 40b may not have the opening 40e. The shape of the probe unit holding portion 40b may be any shape as long as it can be maintained so that the probe unit 3 can be pressed toward the head surface 91 of the test person 90 by utilizing the restoring force generated by the elastic deformation of the arm portion 40a.

[0130] In addition, although the above embodiment shows an example of a structure in which the rotation axis 50 is provided on the probe unit 3, the present invention is not limited thereto. For example, the rotation axis 50 may be provided on the probe unit holding portion 40b, and the probe unit holding portion 40b may hold the probe unit 3 by means of the rotation axis 50, thereby keeping the probe unit 3 rotatable.

[0131] In addition, although the probe unit holding portion 40b is a divisible structure in the above embodiment, the present invention is not limited thereto. For example, the probe unit holding portion 40b may be formed such that the first holding portion 142 and the second holding portion 143 are integrally formed.

[0132] In addition, although the example of the structure in which the probe unit holding portion 40b has the passage portion 144 is shown in the above embodiment, the present invention is not limited thereto. For example, the probe unit holding portion 40b may not have the passage portion 144. However, if the probe unit holding portion 40b does not have the passage portion 144, the handling of the cables 71a and 71b becomes complicated, and therefore it is preferred that the probe unit holding portion 40b has the passage portion 144.

[0133] In addition, although the above embodiment shows an example in which the comb-shaped member 36 is configured to be detachable relative to the probe unit 3, the present invention is not limited to this. For example, the comb-shaped member 36 may also be configured to be non-detachable relative to the probe unit 3. However, from a hygienic point of view, it is preferable that the comb-shaped member 36 is configured to be detachable relative to the probe unit 3.

[0134] In the above embodiment, the probe unit 3 is shown as including two light output units 32 and two light detection units 33 , but the present invention is not limited thereto.

[0135] Furthermore, while the above embodiment illustrates an example of a configuration in which the probe unit 3 includes a light output unit 32 and a light detection unit 33, the present invention is not limited thereto. For example, the light output unit 32 and the light detection unit 33 may be provided within the device body 1. When the light output unit 32 and the light detection unit 33 are provided within the device body 1, the light transmitting probe 30 and the light receiving probe 31 of each probe unit 3 may be connected to the light output unit 32 and the light detection unit 33 using optical fibers or the like. In this case, the optical measurement unit 2 may not include the probe unit control unit 5 and the control unit storage unit 44.

[0136] In the above embodiment, the device body 1 and the optical measuring unit 2 are connected by the cable 70 , but the present invention is not limited thereto. For example, the device body 1 and the optical measuring unit 2 may be connected wirelessly.

[0137] Furthermore, while the above embodiment illustrates an example of a configuration in which the optical measuring device 100 includes a device body 1, the present invention is not limited thereto. For example, the optical measuring device 100 may not include a device body 1. In the case where the optical measuring device 100 does not include a device body 1, the processing and analysis of the acquired data may be performed by the probe unit control unit 5. Alternatively, the processing and analysis of the acquired data may be performed by the PC by connecting the optical measuring unit 2 to a separate PC (personal computer), or by having the probe unit control unit 5 record the data to a storage medium and have the PC read the storage medium. Furthermore, the probe unit control unit 5 may not be attached to the head covering member 42 but may be wearable by the person being tested 90.

[0138] In addition, although the probe unit holding portion 40b has an example of a structure having the opening 40e in the above embodiment, the present invention is not limited thereto. For example, the probe unit holding portion 40b may not have the opening 40e.

[0139] In addition, although the probe unit holding portion 40b is shown as an example of a ring-shaped structure in the above embodiment, the present invention is not limited thereto. For example, the probe unit holding portion 40b may not have a ring shape. The probe unit holding portion 40b may also have a U-shaped structure.

[0140] In addition, although the above embodiment shows an example of a structure in which the probe unit holder 4 includes a pressing mechanism holding portion 41, the present invention is not limited thereto. For example, the probe unit holder 4 may not include a pressing mechanism holding portion 41. In the case where the probe unit holder 4 does not include a pressing mechanism holding portion 41, the arm portions 40a of each probe unit pressing mechanism 40 may be formed integrally with each other.

[0141] In addition, although the above embodiment shows an example of a structure in which the probe unit pressing mechanism 40 (arm portion 40a) is held (fixed) on the pressing mechanism holding portion 41, the present invention is not limited thereto. For example, the probe unit pressing mechanism 40 may not be held on the pressing mechanism holding portion 41. In the case where the probe unit pressing mechanism 40 is not held on the pressing mechanism holding portion 41, the probe unit pressing mechanism 40 only needs to be constructed in a manner that is held on the head covering member 42.

[0142] In addition, although the above embodiment shows an example of a structure in which the probe unit holder 4 includes the head cover member 42 , the present invention is not limited thereto. For example, the probe unit holder 4 may not include the head cover member 42 .

[0143] In addition, although the above embodiment shows an example of a structure in which the pressing mechanism holding portion 41 is held by the head covering member 42, the present invention is not limited to this. For example, the pressing mechanism holding portion 41 may also be held by a member other than the head covering member 42, such as the head wearing portion 43. As long as the probe unit pressing mechanism 40 can be held, the pressing mechanism holding portion 41 may be held by the probe unit holder 4 in any manner.

[0144] Furthermore, while the above embodiment illustrates an example in which the head covering member 42 is configured to entirely cover the head 90a of the test subject 90, the present invention is not limited thereto. For example, the head covering member 42 may be configured as a protective hood, for example, and may not entirely cover the head 90a of the test subject 90. The head covering member 42 may have any shape as long as it covers the vicinity of the measurement area on the head 90a of the test subject 90.

[0145] Furthermore, while the above embodiment illustrates an example in which the head-mounted portion 43 includes the adjustment portion 43b, the present invention is not limited thereto. For example, the head-mounted portion 43 may not include the adjustment portion 43b. If the head-mounted portion 43 does not include the adjustment portion 43b, the strap 43a may be configured to be stretchable.

[0146] In addition, although the above embodiment shows an example of a structure in which the belt 43a circumferentially surrounds the head 90a of the test subject 90 from the forehead to the back of the head, the present invention is not limited to this. For example, the belt 43a may be configured to secure the head covering member 42 by being hooked around the jaw of the test subject 90.

[0147] Furthermore, while the above embodiment illustrates an example in which the head cover member 42 has light-blocking properties, the present invention is not limited thereto. For example, the head cover member 42 may not have light-blocking properties. However, if the head cover member 42 does not have light-blocking properties, accurate measurement may be impossible due to interference. Therefore, it is preferable that the head cover member 42 has light-blocking properties.

[0148] In addition, although the above embodiment shows an example of a structure in which the probe unit 3 is configured at positions F3, F4, P3, and P4 of the international 10-20 method as the measurement location, the present invention is not limited to this. For example, the probe unit 3 may also be configured at positions F3 and F4 of the international 10-20 method as the measurement location. The measurement location where the probe unit 3 is configured can be changed arbitrarily.

[0149] In the above embodiment, the probe unit 3 includes two light transmitting probes 30 and two light receiving probes 31. However, the present invention is not limited thereto. The number of light transmitting probes 30 and light receiving probes 31 included in the probe unit 3 can be arbitrarily changed.

[0150] In addition, although the above embodiment shows an example of a configuration in which the optical measurement unit 2 includes four probe units 3, the present invention is not limited thereto and the number of probe units 3 included in the optical measurement unit 2 can be changed arbitrarily.

[0151] [plan]

[0152] It will be understood by those skilled in the art that the above-described exemplary embodiments are specific examples of the following aspects.

[0153] (Item 1)

[0154] An optical measuring unit comprising:

[0155] a probe unit including a light-transmitting probe for irradiating measuring light onto a head surface of a person under test, and a light-receiving probe for receiving the measuring light emitted from the head surface of the person under test through the inside of the head of the person under test; and

[0156] a probe unit holder including a probe unit pressing mechanism for holding the probe unit and pressing the probe unit against the head of the person being tested;

[0157] The probe unit pressing mechanism includes:

[0158] an arm portion that is elastically deformable and applies a pressing force in the direction of the head surface of the tested person to the probe unit by a restoring force of the elastic deformation when the probe unit is pressed by the head of the tested person toward the side opposite to the head surface of the tested person; and

[0159] The probe unit holding portion is connected to the arm portion and holds the probe unit so as to be rotatable around an axis of a rotation shaft.

[0160] (Item 2)

[0161] According to the optical measuring unit of item 1, the probe unit holder further includes a pressing mechanism holding portion for holding the probe unit pressing mechanism.

[0162] One end portion of the arm portion is connected to the probe unit holding portion, and the other end portion is fixed to the pressing mechanism holding portion, thereby holding the probe unit in a cantilevered manner.

[0163] (Item 3)

[0164] According to the optical measurement unit of item 2, the probe unit is held at an end portion of the probe unit holder opposite to the top of the head of the person being tested.

[0165] The cantilever-shaped arm portion is configured to be arranged on the top side of the head of the test subject when the test subject wears the probe unit holder.

[0166] (Item 4)

[0167] According to the optical measuring unit described in item 2 or 3, the arm portion has a shape curved so as to protrude toward the side opposite to the head surface side of the test subject, and is fixed to the pressing mechanism holding portion in a non-rotatable manner.

[0168] (Item 5)

[0169] The optical measuring unit according to any one of items 2 to 4, wherein the probe unit holding portion has an opening, and is configured to hold the probe unit inside the opening so as to be rotatable around the axis of the rotation shaft.

[0170] (Item 6)

[0171] The optical measuring unit according to any one of items 2 to 5, wherein the probe unit includes a housing portion for housing the light transmitting probe and the light receiving probe.

[0172] The probe unit holding portion is configured to hold the housing portion so as to be rotatable about the axis of the rotation shaft.

[0173] (Item 7)

[0174] According to the optical measuring unit described in item 5 or 6, the probe unit holding portion holds the probe unit such that the extending direction of the rotation axis is perpendicular to the extending direction of the arm portion and perpendicular to the light transmitting probe and the light receiving probe.

[0175] (Item 8)

[0176] According to any one of items 5 to 7, the probe unit holding portion is divisible in a direction in which the probe unit penetrates the probe unit, and is configured to detachably hold the probe unit.

[0177] (Item 9)

[0178] According to the optical measuring unit of item 8, the rotation axis is provided in the probe unit.

[0179] The probe unit holding portion that can be divided in the penetrating direction of the probe unit includes a first holding portion and a second holding portion, the first holding portion being connected to the arm portion,

[0180] The first holding portion and the second holding portion are configured to hold the probe unit rotatably around the axis of the rotation shaft by holding the rotation shaft with the rotation shaft interposed therebetween in the insertion direction of the probe unit.

[0181] (Item 10)

[0182] According to the optical measurement unit according to item 9, the probe unit further includes a light output unit that outputs the measurement light to the light transmitting probe and a light detecting unit that detects the measurement light incident on the light receiving probe.

[0183] The optical measuring unit further includes a control unit that controls the light output unit and the light detection unit.

[0184] The probe unit holding portion includes a passage portion for passing a cable connecting the light output portion and the control portion and a cable connecting the light detection portion and the control portion.

[0185] (Item 11)

[0186] The optical measuring unit according to any one of items 2 to 10, wherein the probe unit holder further includes a head covering member that holds the pressing mechanism holding portion.

[0187] The head covering member has a shape that covers the vicinity of the measurement site of the head of the test subject and has light-shielding properties.

[0188] (Item 12)

[0189] According to the optical measurement unit according to item 11, the probe unit holder further includes a head-mounted portion mounted on the head of the person being tested.

[0190] The head-mounted portion includes a band having an annular shape and an adjustment portion capable of adjusting a size of the band in a circumferential direction.

[0191] (Item 13)

[0192] The optical measurement unit according to any one of items 1 to 12, wherein the probe unit is provided in plurality, each corresponding to each measurement site on the head of the person being tested.

[0193] The probe unit pressing mechanism is provided in plurality and corresponds to each of the measurement locations, and is configured to hold one probe unit at each measurement location.

[0194] (Item 14)

[0195] A probe unit holder for holding a probe unit, the probe unit comprising: a light-transmitting probe for irradiating a measuring light onto the surface of a head of a person being tested; and a light-receiving probe for receiving the measuring light emitted from the surface of the head of the person being tested via the inside of the head of the person being tested, wherein:

[0196] The probe unit holder includes a probe unit pressing mechanism that holds the probe unit and presses the probe unit against the head of the person being tested.

[0197] The probe unit pressing mechanism includes:

[0198] an arm portion that is elastically deformable and applies a pressing force in the direction of the head surface of the tested person to the probe unit by a restoring force of the elastic deformation when the probe unit is pressed by the head of the tested person toward the side opposite to the head surface of the tested person; and

[0199] The probe unit holding portion is connected to the arm portion and holds the probe unit so as to be rotatable around an axis of a rotation shaft.

[0200] Description of Reference Numerals

[0201] 2. Optical measuring unit; 3. Probe unit; 4. Probe unit holder; 5. Control unit (probe unit control unit); 7. Measuring light; 30. Light-transmitting probe; 31. Light-receiving probe; 32. Light output unit; 33. Light detection unit; 34. Storage unit; 40. Probe unit pressing mechanism; 40a. Arm; 40b. Probe unit holding unit; 40e. Opening (opening of probe unit holding unit); 41. Pressing mechanism holding unit; 42. Head covering member; 43. Head wearing unit; 50. Rotation axis; 90. Person under test; 90a. Head; 91. Head surface; 100. Optical measuring device; 140. One end portion; 141. Other end portion; 142. First holding unit; 143. Second holding unit; 144. Passageway portion.

Claims

1. An optical measuring unit, wherein: The light measurement unit includes: a probe unit including a light-transmitting probe for irradiating measuring light onto a head surface of a person under test, and a light-receiving probe for receiving the measuring light emitted from the head surface of the person under test through the inside of the head of the person under test; and a probe unit holder including a probe unit pressing mechanism for holding the probe unit and pressing the probe unit against the head of the person being tested; The probe unit pressing mechanism includes: an arm portion that is elastically deformable and applies a pressing force in the direction of the head surface of the tested person to the probe unit by a restoring force of the elastic deformation when the probe unit is pressed by the head of the tested person toward the side opposite to the head surface of the tested person; and The probe unit holding portion is connected to the arm portion and holds the probe unit so as to be rotatable around an axis of a rotation shaft.

2. The optical measuring unit according to claim 1, wherein The probe unit support further includes a pressing mechanism holding portion for holding the probe unit pressing mechanism. One end portion of the arm portion is connected to the probe unit holding portion, and the other end portion is fixed to the pressing mechanism holding portion, thereby holding the probe unit in a cantilevered manner.

3. The optical measuring unit according to claim 2, wherein The probe unit is held at an end portion of the probe unit holder opposite to the top of the head of the person being tested. The cantilever-shaped arm portion is configured to be arranged on the top side of the head of the test subject when the test subject wears the probe unit holder.

4. The optical measuring unit according to claim 2, wherein The arm portion has a shape curved so as to protrude toward a side opposite to a surface side of the head of the test subject, and is fixed to the pressing mechanism holding portion in a non-rotatable manner.

5. The optical measuring unit according to claim 2, wherein The probe unit holding portion has an opening, and is configured to hold the probe unit inside the opening so as to be rotatable around the axis of the rotation shaft.

6. The optical measuring unit according to claim 2, wherein The probe unit includes a storage portion for storing the light transmitting probe and the light receiving probe. The probe unit holding portion is configured to hold the housing portion so as to be rotatable about the axis of the rotation shaft.

7. The optical measuring unit according to claim 5, wherein The probe unit holding portion holds the probe unit such that the extending direction of the rotation axis is perpendicular to the extending direction of the arm portion and perpendicular to the light transmitting probe and the light receiving probe.

8. The optical measuring unit according to claim 5, wherein The probe unit holding portion is divisible in a direction in which the probe unit is inserted, and is configured to detachably hold the probe unit.

9. The optical measuring unit according to claim 8, wherein The rotation axis is provided on the probe unit, The probe unit holding portion that can be divided in the penetrating direction of the probe unit includes a first holding portion and a second holding portion, the first holding portion being connected to the arm portion, The first holding portion and the second holding portion are configured to hold the probe unit rotatably around the axis of the rotation shaft by holding the rotation shaft with the rotation shaft interposed therebetween in the insertion direction of the probe unit.

10. The optical measuring unit according to claim 9, wherein The probe unit further includes a light output unit that outputs the measurement light to the light transmitting probe and a light detecting unit that detects the measurement light incident on the light receiving probe. The optical measuring unit further includes a control unit that controls the light output unit and the light detection unit. The probe unit holding portion includes a passage portion for passing a cable connecting the light output portion and the control portion and a cable connecting the light detection portion and the control portion.

11. The optical measuring unit according to claim 2, wherein The probe unit holder further includes a head covering member that holds the pressing mechanism holding portion. The head covering member has a shape that covers the vicinity of the measurement site of the head of the test subject and has light-shielding properties.

12. The optical measuring unit according to claim 11, wherein The probe unit bracket further includes a head wearing portion worn on the head of the person being tested, The head-mounted portion includes a band having an annular shape and an adjustment portion capable of adjusting a size of the band in a circumferential direction.

13. The optical measuring unit according to claim 1, wherein There are multiple probe units, each corresponding to each measurement part of the head of the tested person. The probe unit pressing mechanism is provided in plurality and corresponds to each of the measurement locations, and is configured to hold one probe unit at each measurement location.

14. A probe unit holder for holding a probe unit, the probe unit comprising: A light-transmitting probe, which illuminates the surface of the head of the person being tested and measures light; and a light receiving probe for receiving the measurement light emitted from the head surface of the test person through the inside of the test person's head, wherein The probe unit holder includes a probe unit pressing mechanism that holds the probe unit and presses the probe unit against the head of the person being tested. The probe unit pressing mechanism includes: an arm portion that is elastically deformable and applies a pressing force in the direction of the head surface of the tested person to the probe unit by a restoring force of the elastic deformation when the probe unit is pressed by the head of the tested person toward the side opposite to the head surface of the tested person; and The probe unit holding portion is connected to the arm portion and holds the probe unit so as to be rotatable around an axis of a rotation shaft.

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