Detection device and measuring device

Abstract

To provide a detecting device that can increase the amount of light to be received by a light receiving part.SOLUTION: A detecting device includes: a flexible board; a first light emitting part provided on the flexible board, and for emitting light toward a living body; and a first light receiving part provided on the flexible board, and capable of receiving light from the living body based on the light emitted from the first light emitting part. The first light emitting part consists of a flexible organic light emitting diode. The first light receiving part consists of a flexible organic light detector.SELECTED DRAWING: Figure 3

Description

Technical Field

[0004] , , , , Established, , , , One aspect of the detection device according to the present invention is flexible , , ,

[0006] , , , , , , ,

[0005] , , , , And, as stated above , , , And, as stated above , ,

[0003] , ,

[0001] The present invention relates to a detection device and a measurement device.

Background Art

[0002] Conventionally, various measurement techniques for non-invasively measuring biological information such as pulse waves have been known.

[0003] For example, Patent Document 1 describes an electrode sheet including a sheet-like flexible substrate and a biological signal acquisition unit disposed on the flexible substrate for acquiring a biological signal of a living body. The biological signal acquisition unit includes a light emitting unit configured to irradiate light of a predetermined wavelength onto the living body, and a light receiving unit configured to receive reflected light of the light irradiated by the light emitting unit. The light emitting unit and the light receiving unit are covered with a protective layer that curves along the curvature of the living body.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, since the light emitting unit and the light receiving unit described in Patent Document 1 are covered with a protective layer that curves along the curvature of the living body, the distance between the light emitting unit and the human body, and the distance between the light receiving unit and the human body increase. When the distance increases, the reflected light from the human body decreases, and the amount of light received by the light receiving unit becomes small.

Means for Solving the Problems

[0006] One aspect of the detection device according to the present invention is flexible Substrate And, as stated above On the flexible substrate Established, A first light emitting unit that emits light toward And, as stated aboveA first light-receiving unit provided on a flexible substrate, capable of receiving light from the living organism based on light emitted from the first light-emitting unit. The first light-shielding filter includes a first light-shielding filter that shields the light emitted from the first light-emitting unit, The first light-emitting section is composed of a flexible organic light-emitting diode. And, as stated above The first light-receiving section is composed of a flexible organic photodetector. And, as stated above The first light-emitting unit and the first light-receiving unit are connected to the cover member that comes into contact with the living body. Pasted, the above The light emitted from the first light-emitting unit passes through the cover member and enters the living body. and the aforementioned The first light-emitting unit, the first light-receiving unit, and the flexible substrate are deformable according to the shape of the cover member. The cover member has a first surface to which the first light-emitting part and the first light-receiving part are attached, and a second surface that comes into contact with the living body and is opposite to the first surface, and the shape of the cover member is convex with the first surface facing inward and the second surface facing outward, With the first light-emitting unit and the first light-receiving unit not attached to the cover member, from the perpendicular direction of the flexible substrate Look, the above The end of the first light-emitting section opposite to the first light-receiving section overlaps with the first light-shielding filter. 。

[0007] One embodiment of the measuring device according to the present invention is: One embodiment of the detection device, An information analysis unit that identifies biological information from a detection signal indicating the detection result by the aforementioned detection device, Includes. [Brief explanation of the drawing]

[0008] [Figure 1] Functional block diagram of the measuring device according to this embodiment. [Figure 2] A schematic plan view showing the detection device according to this embodiment. [Figure 3] A schematic cross-sectional view showing the detection device according to this embodiment. [Figure 4] A schematic cross-sectional view showing the usage state of the detection device according to this embodiment. [Figure 5] A schematic plan view showing a detection device according to a first modified example of this embodiment. [Figure 6] A schematic cross-sectional view showing a detection device according to the first modified example of this embodiment. [Figure 7]Cross-sectional view schematically showing the usage state of the detection device according to the first modification of the present embodiment. [Figure 8] Cross-sectional view schematically showing the detection device according to the first modification of the present embodiment. [Figure 9] Cross-sectional view schematically showing the detection device according to the first modification of the present embodiment. [Figure 10] Plan view schematically showing the detection device according to the first modification of the present embodiment. [Figure 11] Plan view schematically showing the detection device according to the first modification of the present embodiment. [Figure 12] Plan view schematically showing the detection device according to the second modification of the present embodiment. [Figure 13] Cross-sectional view schematically showing the detection device according to the second modification of the present embodiment. [Figure 14] Cross-sectional view schematically showing the usage state of the detection device according to the second modification of the present embodiment. [Figure 15] Cross-sectional view schematically showing the usage state of the detection device according to the second modification of the present embodiment. [Figure 16] Plan view schematically showing the detection device according to the third modification of the present embodiment. [Figure 17] Cross-sectional view schematically showing the detection device according to the third modification of the present embodiment. [Figure 18] Cross-sectional view schematically showing the usage state of the detection device according to the third modification of the present embodiment. [Figure 19] Cross-sectional view schematically showing the usage state of the detection device according to the third modification of the present embodiment.

Mode for Carrying Out the Invention

[0009] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Note that the embodiments described below do not unduly limit the content of the present invention described in the claims. Also, not all of the configurations described below are essential constituent elements of the present invention.

[0010] 1. Measurement Device 1.1. Overall Configuration First, the measuring device according to this embodiment will be described with reference to the drawings. Figure 1 is a functional block diagram of the measuring device 100 according to this embodiment.

[0011] The measuring device 100 is a biomechanical measuring instrument that non-invasively measures the biological information of a biological body M to be measured. Examples of biological bodies M include the human body. Biological body M is the subject whose biological information is being measured. Examples of measurement sites for biological body M include fingertips and wrists.

[0012] The measuring device 100 measures, for example, the pulse wave and oxygen saturation (SpO2) of a living organism M as biological information. The pulse wave refers to the pulse rate and represents the time change in the volume within the blood vessels in conjunction with the beating of the heart. Oxygen saturation refers to the percentage of hemoglobin in the blood of the living organism M that is bound to oxygen, and is an indicator for evaluating the respiratory function of the living organism M.

[0013] As shown in Figure 1, the measuring device 100 includes, for example, a detection device 10, a storage device 12, a display device 14, and a control device 16. The detection device 10, storage device 12, display device 14, and control device 16 are housed in, for example, a housing (not shown).

[0014] The detection device 10 is an optical sensor module that generates detection signals S1, S2, and S3 according to the state of the living organism M. The detection device 10 includes, for example, a light-emitting unit 20, a light-receiving unit 30, a drive circuit 42, and an output circuit 44.

[0015] The light-emitting unit 20 emits and emits light. The light emitted from the light-emitting unit 20 enters the living body M, propagates through the inside of the living body M while repeatedly being reflected and scattered, and is then emitted towards the detection device 10 to reach the light-receiving unit 30. In this way, the light-receiving unit 30 receives light from the living body M based on the light emitted from the light-emitting unit 20.

[0016] The light-emitting section 20 includes, for example, a first section 21, a second section 22, and a third section 23. The first section 21, the second section 22, and the third section 23 emit light of different wavelengths to the living organism M.

[0017] The first portion 21 of the light-emitting unit 20 emits green light LG having a green wavelength band of, for example, 520 nm to 550 nm toward the living organism M. The peak wavelength of the green light LG is, for example, 520 nm.

[0018] The second portion 22 of the light-emitting unit 20 emits red light LR having a red wavelength band of, for example, 600 nm to 800 nm toward the living organism M. The peak wavelength of the red light LR is, for example, 660 nm.

[0019] The third portion 23 of the light-emitting unit 20 emits near-infrared light LI having a near-infrared wavelength band of, for example, 800 nm to 1300 nm toward the biological tissue M. The peak wavelength of the near-infrared light LI is, for example, 905 nm.

[0020] The light-receiving section 30 includes, for example, a fourth section 31 and a fifth section 32.

[0021] The fourth portion 31 of the light-receiving unit 30 receives the green light LG emitted from the first portion 21 of the light-emitting unit 20 and propagating through the inside of the living organism M, and generates a signal corresponding to the intensity of the received light.

[0022] The fifth portion 32 of the light-receiving unit 30 receives at least one of the red light LR emitted from the second portion 22 of the light-emitting unit 20 and propagating inside the living organism M, and the near-infrared light LI emitted from the third portion 23 of the light-emitting unit 20 and propagating inside the living organism M, and generates a signal corresponding to the received light intensity.

[0023] The drive circuit 42 causes the light-emitting section 20 to emit light by supplying a drive current. The drive circuit 42 causes the first section 21, the second section 22, and the third section 23 of the light-emitting section 20 to emit light periodically in a time-division manner. The drive circuit 42 is composed of, for example, an IC (Integrated Circuit).

[0024] The output circuit 44 includes, for example, an A / D converter (Analog-to-Digital Converter) that converts the signal generated by the light receiving unit 30 from analog to digital, and an amplification circuit that amplifies the converted detection signal. The output circuit 44 generates detection signals S1, S2, and S3 for different wavelengths. The output circuit 44 is made up of, for example, an IC.

[0025] It is also possible to install one or both of the drive circuit 42 and the output circuit 44 as external circuits to the detection device 10. In other words, the detection device 10 does not need to include the drive circuit 42 and the output circuit 44.

[0026] The detection signal S1 generated by the output circuit 44 is a signal representing the light intensity when the fourth part 31 of the light receiving unit 30 receives green light LG. The detection signal S2 is a signal representing the light intensity when the fifth part 32 of the light receiving unit 30 receives red light LR. The detection signal S3 is a signal representing the light intensity when the fifth part 32 receives near-infrared light LI. Generally, the amount of light absorbed by blood differs between vasodilation and vasoconstriction. Therefore, the detection signals S1, S2, and S3 become pulse wave signals that include a periodic fluctuation component corresponding to the pulsating component of the arteries inside the living body M, i.e., the volume pulse wave.

[0027] The storage device 12 is composed of, for example, RAM (Random Access Memory) and ROM (Read Only Memory). The storage device 12 stores the program executed by the control device 16 and various data used by the control device 16.

[0028] The display device 14 is composed of, for example, an LCD (Liquid Crystal Display), an organic EL (Electroluminescence) display, or an EPD (Electrophoretic Display). The display device 14 displays biological information identified from the detection signals S1, S2, and S3.

[0029] The control device 16 is an arithmetic processing unit composed of, for example, a CPU (Central Processing Unit) and an FPGA (Field Programmable Gate Array). The functions of the control device 16 may be distributed across multiple integrated circuits, or they may be composed of dedicated electronic circuits. Furthermore, the control device 16, which incorporates the memory device 12, can also be implemented using, for example, an ASIC (Application Specific Integrated Circuit).

[0030] The control device 16 executes a program stored in the storage device 12 to identify biological information of the living organism M from the detection signals S1, S2, and S3 generated by the detection device 10. Specifically, the control device 16 identifies the subject's pulse interval (PPI) from the detection signal S1, which represents the light reception intensity of green light LG. Furthermore, the control device 16 identifies the oxygen saturation of the living organism M by analyzing the detection signal S2, which represents the light reception intensity of red light LR, and the detection signal S3, which represents the light reception intensity of near-infrared light LI.

[0031] As described above, in the measuring device 100, the control device 16 functions as an information analysis unit that identifies biological information from detection signals S1, S2, and S3, which indicate the detection results from the detection device 10. The control device 16 displays the biological information identified from the detection signals S1, S2, and S3 on the display device 14.

[0032] The control device 16 can also notify the user of the measurement results via voice output. The control device 16 may also warn the user that there may be a physical impairment if the pulse rate or oxygen saturation level fluctuates outside a predetermined range.

[0033] The measuring device 100 described above can be applied to, for example, smartwatches, activity trackers, and the like.

[0034] 1.2. Detection device Figure 2 is a schematic plan view of the detection device 10. Figure 3 is a schematic cross-sectional view of the detection device 10 taken along line III-III in Figure 2. Figure 4 is a schematic cross-sectional view of the detection device 10 in use. In Figures 2 and 3, the three mutually orthogonal axes are shown as the X-axis, Y-axis, and Z-axis.

[0035] As shown in Figure 4, the detection device 10 is used, for example, by being attached to the cover member 60 when measuring the biological information of a living organism M. When the detection device 10 is attached to the cover member 60, the detection device 10 is deformable according to the shape of the cover member 60.

[0036] For convenience, the cover member 60 is not shown in Figure 1. Furthermore, the detection device 10 may be modified and used by being directly attached to the living body M without using the cover member 60.

[0037] As shown in Figures 2 to 4, the detection device 10 includes, for example, a light-emitting unit 20, a light-receiving unit 30, a flexible substrate 40, and a spacer member 50.

[0038] As shown in Figure 4, the flexible substrate 40 can be deformed according to the shape of the cover member 60 when the detection device 10 is attached to the cover member 60. For example, the flexible substrate 40 may be a flexible printed circuit board (FPC). The flexible substrate 40 has, for example, a flexible drive circuit 42 and an output circuit 44.

[0039] The shape of the flexible substrate 40 is, for example, a rectangle or a square when viewed from the direction of the perpendicular N of the flexible substrate 40. Here, "the direction of the perpendicular N of the flexible substrate 40" refers to the direction of the perpendicular to the main surface 41 of the flexible substrate 40 when the flexible substrate 40 is placed on a flat surface and pulled with a predetermined force so that the flexible substrate 40 does not sag. In the examples shown in Figures 2 and 3, the direction of the perpendicular N is the Z-axis direction. Figures 2 and 3 show the detection device 10 in a state where it is not attached to the cover member 60.

[0040] The light-emitting unit 20 is provided on the flexible substrate 40. The light-emitting unit 20 is provided on the main surface 41 of the flexible substrate 40. The main surface 41 is the surface of the flexible substrate 40 facing the cover member 60 when the detection device 10 is attached to the cover member 60, as shown in Figure 4. In the example shown in Figure 2, the shape of the light-emitting unit 20 is a rectangle or square when viewed from the Z-axis direction. The light-emitting unit 20 and the light-receiving unit 30 are aligned in the X-axis direction. The light-emitting unit 20 emits light toward the living organism M. The light-emitting unit 20 and the light-receiving unit 30 are deformable into a curved shape that is bent in an arc shape that is convex in the Z-axis direction along the X-axis direction. The X-axis direction is the first direction. When the light-emitting unit 20 and the light-receiving unit 30 are attached to the living organism M, they deform into a curved shape that is bent in an arc shape along the first direction.

[0041] The light-emitting unit 20 is made of a flexible organic light-emitting diode (OLED). The light-emitting unit 20 is capable of surface emission. As shown in Figure 4, the light-emitting unit 20 is deformable according to the shape of the cover member 60 when the detection device 10 is attached to the cover member 60. In the illustrated example, the light-emitting unit 20 is attached to the cover member 60. The light-emitting unit 20 is formed on the flexible substrate 40, for example, by a semiconductor thin-film formation process.

[0042] The light-emitting section 20 includes, for example, a first section 21 that emits green light LG, a second section 22 that emits red light LR, and a third section 23 that emits near-infrared light LI. In the example shown in Figures 2 and 3, the first section 21, the second section 22, and the third section 23 are aligned in the X-axis direction, with the first section 21 located between the second section 22 and the third section 23. The third section 23 is located between the first section 21 and the light-receiving section 30 in the X-axis direction. A spacer 50 is also provided between the third section 23 and the light-receiving section 30 in the X-axis direction.

[0043] The first portion 21, the second portion 22, and the third portion 23 of the light-emitting section 20 each have an organic light-emitting layer. Depending on the type of dopant in the organic light-emitting layer, the first portion 21, the second portion 22, and the third portion 23 can emit light of different wavelengths from each other.

[0044] Furthermore, the first portion 21, the second portion 22, and the third portion 23 of the light-emitting section 20 may emit light of different wavelengths by having a common organic light-emitting layer that emits white light and color filters that transmit light of different wavelengths. In this case, the color filters are made of a flexible material.

[0045] The light-receiving unit 30 is provided on the main surface 41 of the flexible substrate 40. In the example shown in Figure 2, the shape of the light-receiving unit 30 is a rectangle or square when viewed from the Z-axis direction. The light-receiving unit 30 is capable of receiving light from the living organism M based on the light emitted from the light-emitting unit 20.

[0046] The light-receiving section 30 is composed of a flexible organic photodetector. Examples of organic photodetectors that make up the light-receiving section 30 include a flexible organic photodiode (OPD) and a flexible organic phototransistor. As shown in Figure 4, the light-receiving section 30 is deformable according to the shape of the cover member 60 when the detection device 10 is attached to the cover member 60. In the illustrated example, the light-receiving section 30 is attached to the cover member 60. The light-receiving section 30 is formed on the flexible substrate 40, for example, by a semiconductor thin-film formation process.

[0047] The light-receiving unit 30 includes, for example, a fourth portion 31 that receives green light LG from a living organism M, and a fifth portion 32 that receives at least one of red light LR and near-infrared light LI from the living organism M. The fifth portion 32 is capable of receiving both red light LR and near-infrared light LI. In the example shown in Figures 2 and 3, the fourth portion 31 and the fifth portion 32 are aligned in the X-axis direction. In the X-axis direction, the fourth portion 31 is provided between the light-emitting unit 20 and the fifth portion 32. Also in the X-axis direction, a spacer 50 is provided between the fourth portion 31 and the light-emitting unit 20.

[0048] The arrangement of the first portion 21, second portion 22, and third portion 23 of the light-emitting unit 20, and the fourth portion 31 and fifth portion 32 of the light-receiving unit 30 is not particularly limited, as long as the fourth portion 31 can receive green light LG from the living organism M emitted from the first portion 21, and the fifth portion 32 can receive red light LR from the living organism M based on light emitted from the second portion 22, and near-infrared light LI based on light emitted from the third portion 23.

[0049] The spacer member 50 is provided on the flexible substrate 40. The spacer member 50 is provided on the main surface 41 of the flexible substrate 40. The spacer member 50 is provided between the light-emitting unit 20 and the light-receiving unit 30. Furthermore, as shown in Figure 2, the spacer member 50 is provided around the light-emitting unit 20 and around the light-receiving unit 30 when viewed from the plane Z-axis direction.

[0050] The spacer member 50 is made of a flexible material. The spacer member 50 may be formed integrally with the flexible substrate 40. As shown in Figure 4, the spacer member 50 is deformable according to the shape of the cover member 60 when the detection device 10 is attached to the cover member 60. In the illustrated example, the spacer member 50 is attached to the cover member 60. The spacer member 50 is formed on the flexible substrate 40, for example, by a semiconductor process.

[0051] As shown in Figure 4, the cover member 60 comes into contact with the living organism M when its biological information is being measured. The cover member 60 is light-transmitting. Light emitted from the light-emitting unit 20 passes through the cover member 60 and enters the living organism M. Light from the living organism M passes through the cover member 60 and is received by the light-receiving unit 30. The material of the cover member 60 is, for example, acrylic resin or polycarbonate. The detection device 10 may or may not include the cover member 60.

[0052] The cover member 60 has a first surface 62 and a second surface 64. The detection device 10 is attached to the first surface 62. The detection device 10 may be attached to the first surface 62 via a light-transmitting adhesive (not shown). The second surface 64 is in contact with the living organism M. The second surface 64 is the surface opposite to the first surface 62.

[0053] The cover member 60 has a convex shape with the first surface 62 facing inward and the second surface 64 facing outward. For example, in a cross-sectional view as shown in Figure 4, a virtual line L1 perpendicular to the tangent at point P1 on the second surface 64 and a virtual line L2 perpendicular to the tangent at point P2 on the second surface 64 intersect on the second surface 64 side. Virtual lines L1 and L2 do not intersect on the first surface 62 side. Point P1 is the point that contacts the light-emitting part 20 on the second surface 64. Point P2 is the point that contacts the light-receiving part 30 on the second surface 64. The light-emitting part 20, the light-receiving part 30, the flexible substrate 40, and the spacer member 50 are deformable according to the shape of the cover member 60.

[0054] The Young's modulus of the cover member 60 is greater than, for example, the Young's modulus of the measurement site of the biological tissue M. Therefore, when the measurement site of the biological tissue M comes into contact with the cover member 60, the measurement site of the biological tissue M deforms according to the shape of the cover member 60. As a result, an air layer can be eliminated between the measurement site of the biological tissue M and the cover member 60. If an air layer exists between the biological tissue M and the cover member 60, or between the detection device 10 and the cover member 60, stray light and light loss will occur due to Fresnel reflection.

[0055] 1.3. Effects The detection device 10 includes a flexible substrate 40, a light-emitting unit 20 provided on the flexible substrate 40 that emits light toward the living organism M, and a light-receiving unit 30 provided on the flexible substrate 40 that receives light from the living organism M based on the light emitted from the light-emitting unit 20. The light-emitting unit 20 is made of a flexible organic light-emitting diode, and the light-receiving unit 30 is made of a flexible organic photodetector.

[0056] Therefore, in the detection device 10, even without providing a layer that curves according to the shape of the cover member 60 between the light-emitting unit 20 and the cover member 60, and between the light-receiving unit 30 and the cover member 60, it is possible to avoid the existence of an air layer between the light-emitting unit 20 and the cover member 60, and between the light-receiving unit 30 and the cover member 60. When the detection device 10 is attached directly to the living body M without using the cover member 60, even without providing a layer that curves according to the shape of the living body M between the light-emitting unit 20 and the living body M, and between the light-receiving unit 30 and the living body M, it is possible to avoid the existence of an air layer between the light-emitting unit 20 and the living body M, and between the light-receiving unit 30 and the living body M. As a result, the distance between the light-emitting unit 20 and the living body M, and between the light-receiving unit 30 and the living body M can be reduced compared to the case where a curved layer is provided. As a result, the amount of light received by the light-receiving unit 30 can be increased.

[0057] The detection device 10 is attached to a cover member 60 that comes into contact with the living body M. Light emitted from the light-emitting unit 20 passes through the cover member 60 and enters the living body M. The light-emitting unit 20, the light-receiving unit 30, and the flexible substrate 40 are deformable according to the shape of the cover member 60.

[0058] Therefore, the detection device 10 can be attached to the cover member 60 without an air layer between the detection device 10 and the cover member 60. Consequently, the measurement site of the biological tissue M is not limited.

[0059] 2. Variations of detection devices 2.1. First Variation Next, a detection device according to the first modified example of this embodiment will be described with reference to the drawings. Figure 5 is a schematic plan view showing the detection device 110 according to the first modified example of this embodiment. Figure 6 is a schematic cross-sectional view taken along line VI-VI in Figure 5 showing the detection device 110 according to the first modified example of this embodiment. Figure 7 is a schematic cross-sectional view showing the detection device 110 according to the first modified example of this embodiment in use. Figures 8 and 9 are schematic enlarged cross-sectional views showing a part of the detection device 110 according to the first modified example of this embodiment.

[0060] Figures 5, 6, 8, and 9 show the state in which the detection device 110 is not attached to the cover member 60. Figure 7 shows the state in which the detection device 110 is attached to the cover member 60.

[0061] Hereinafter, in the detection device 110 according to the first modified example of this embodiment, components having the same function as the components of the detection device 10 according to the above embodiment will be denoted by the same reference numerals, and their detailed descriptions will be omitted. The same applies to the detection devices according to the second and third modified examples of this embodiment, which will be described later.

[0062] The detection device 110 differs from the detection device 10 described above in that it has a sealing layer 70 and an angle limiting filter 80, as shown in Figures 8 and 9. For convenience, the sealing layer 70 and the angle limiting filter 80 are not shown in Figures 5 to 7.

[0063] As shown in Figures 8 and 9, the sealing layer 70 covers the light-emitting surface, the light-receiving surface, the light-emitting unit 20, and the light-receiving unit 30. The sealing layer 70 seals the light-emitting unit 20 and the light-receiving unit 30. In the illustrated example, the sealing layer 70 is provided on the light-emitting unit 20, the light-receiving unit 30, and the spacer member 50.

[0064] The sealing layer 70 is light-transmitting. The sealing layer 70 transmits light emitted from the light-emitting part 20. The sealing layer 70 transmits light from the living organism M. The sealing layer 70 is a flexible layer. The material of the sealing layer 70 is, for example, SiO2, SiN, or Al2O3.

[0065] The angle limiting filter 80 is provided on the sealing layer 70. The angle limiting filter 80 includes, for example, an exit light transmission filter 82, an incident light transmission filter 84, and a light shielding filter 86.

[0066] The exit light transmission filter 82 transmits light emitted from the light-emitting unit 20. In the illustrated example, when viewed from the Z-axis direction, a portion of the exit light transmission filter 82 overlaps with the light-emitting unit 20. The incident light transmission filter 84 transmits light from the living organism M. In the illustrated example, when viewed from the Z-axis direction, a portion of the incident light transmission filter 84 overlaps with the light-receiving unit 30. The transmission filters 82 and 84 may be color filters corresponding to the wavelength of light emitted from the light-emitting unit 20. The transmission filters 82 and 84 are flexible filters. The material of the transmission filters 82 and 84 is, for example, an acrylic resin mixed with a pigment.

[0067] The light-shielding filter 86 is provided in the sealing layer 70. The light-shielding filter 86 is in contact with the transmission filters 82 and 84. When viewed from the Z-axis direction, it surrounds the transmission filters 82 and 84.

[0068] The light-shielding filter 86 blocks the light emitted from the light-emitting unit 20. The light-shielding filter 86 blocks the light directed toward the light-receiving unit 30. In the illustrated example, when viewed from the Z-axis direction, the end 24 of the light-emitting unit 20 opposite to the light-receiving unit 30 overlaps with the light-shielding filter 86. End 24 is the -X-axis end of the light-emitting unit 20. When viewed from the Z-axis direction, the end 34 of the light-receiving unit 30 opposite to the light-emitting unit 20 overlaps with the light-shielding filter 86. End 34 is the +X-axis end of the light-receiving unit 30. The light-shielding filter 86 is a flexible filter. The material of the light-shielding filter 86 is, for example, an acrylic resin mixed with a pigment.

[0069] The detection device 110 includes, for example, a plurality of light-emitting units 20, as shown in Figures 5 to 7. In the illustrated example, three light-emitting units 20a, 20b, and 20c are provided as the plurality of light-emitting units 20. In the example shown in Figure 5, the shape of the light-emitting units 20a, 20b, and 20c is a rectangle with a long side parallel to the Y-axis. In the illustrated example, the light-emitting units 20a, 20b, and 20c are aligned in the X-axis direction. Light-emitting unit 20b is provided between light-emitting unit 20a and light-emitting unit 20c. Light-emitting unit 20c is provided between light-receiving unit 30 and light-emitting unit 20b. The light-emitting units 20 and light-receiving unit 30 do not deform in the Y-axis direction, but can be deformed into a curved shape bent in an arc along the X-axis direction.

[0070] The detection device 110 includes, for example, a plurality of light-receiving units 30. In the illustrated example, three light-receiving units 30a, 30b, and 30c are provided as the plurality of light-receiving units 30. In the example shown in Figure 5, the shape of the light-receiving units 30a, 30b, and 30c is a rectangle with a long side parallel to the Y-axis. In the illustrated example, the light-receiving units 30a, 30b, and 30c are aligned in the X-axis direction. The light-receiving unit 30b is provided between the light-receiving unit 30a and the light-receiving unit 30c. The light-receiving unit 30c is provided between the light-emitting unit 20 and the light-receiving unit 30b.

[0071] The distance between the light-emitting unit 20a and the light-receiving unit 30c is greater than the distance between the light-emitting unit 20b and the light-receiving unit 30c.

[0072] The distance between the light-receiving unit 30a and the light-emitting unit 20c is greater than the distance between the light-receiving unit 30b and the light-emitting unit 20c.

[0073] Here, Figures 10 and 11 are schematic plan views of the detection device 110. Note that Figures 10 and 11 show the device before it is attached to the cover member 60. Also, for convenience, Figure 10 omits the illustration of components other than the light-emitting unit 20 and the angle limiting filter 80. In Figure 10, the emitted light transmission filter 82 of the angle limiting filter 80 is shown with a dashed line. Also, in Figure 11, the illustration of components other than the light-receiving unit 30 and the angle limiting filter 80 is omitted. In Figure 11, the incident light transmission filter 84 of the angle limiting filter 80 is shown with a dashed line.

[0074] As shown in Figure 10, multiple exit light transmission filters 82 are provided, corresponding to the number of light-emitting units 20. In the illustrated example, three exit light transmission filters 82a, 82b, and 82c are provided as multiple exit light transmission filters 82. The shape of the exit light transmission filters 82a, 82b, and 82c is a rectangle with a long side parallel to the Y axis. Viewed from the Z axis direction, a portion of the exit light transmission filter 82a overlaps with the light-emitting unit 20a. A portion of the exit light transmission filter 82b overlaps with the light-emitting unit 20b. A portion of the exit light transmission filter 82c overlaps with the light-emitting unit 20c.

[0075] Viewed from the Z-axis direction, distance D1 is greater than distance D2. Distance D2 is greater than distance D3. Distance D1 is the distance between the end 24 of the light-emitting part 20a and the boundary line between the light-transmitting filter 82a and the light-shielding filter 86. Distance D2 is the distance between the end 24 of the light-emitting part 20b and the boundary line between the light-transmitting filter 82b and the light-shielding filter 86. Distance D3 is the distance between the end 24 of the light-emitting part 20c and the boundary line between the light-transmitting filter 82c and the light-shielding filter 86.

[0076] Thus, in the detection device 110, the further the light-emitting unit 20 is from the light-receiving unit 30, the greater the distance between the end 24 of the light-emitting unit 20 and the boundary line between the light-transmitting filter 82 and the light-shielding filter 86.

[0077] As shown in Figure 11, multiple incident light transmission filters 84 are provided, corresponding to the number of light receiving units 30. In the illustrated example, three incident light transmission filters 84a, 84b, and 84c are provided as multiple incident light transmission filters 84. The shape of the incident light transmission filters 84a, 84b, and 84c is a rectangle with a long side parallel to the Y axis. Viewed from the Z axis direction, a portion of the incident light transmission filter 84a overlaps with the light receiving unit 30a. A portion of the incident light transmission filter 84b overlaps with the light receiving unit 30b. A portion of the incident light transmission filter 84c overlaps with the light receiving unit 30c.

[0078] Viewed from the Z-axis direction, distance D4 is greater than distance D5. Distance D5 is greater than distance D6. Distance D4 is the distance between the end 34 of the light-receiving section 30a and the boundary line between the incident light transmission filter 84a and the light-shielding filter 86. Distance D5 is the distance between the end 34 of the light-receiving section 30b and the boundary line between the incident light transmission filter 84b and the light-shielding filter 86. Distance D6 is the distance between the end 34 of the light-receiving section 30c and the boundary line between the incident light transmission filter 84c and the light-shielding filter 86.

[0079] Thus, in the detection device 110, the further the light-receiving unit 30 is from the light-emitting unit 20, the greater the distance between the end 34 of the light-receiving unit 30 and the boundary line between the incident light transmission filter 84 and the light-shielding filter 86.

[0080] The detection device 110 includes a light-shielding filter 86 as a first light-shielding filter that blocks the light emitted from the light-emitting unit 20. The cover member 60 has a first surface 62 to which the detection device 110 is attached, and a second surface 64 that is in contact with the living body M and is opposite to the first surface 62. The shape of the cover member 60 is convex, with the first surface 62 facing inward and the second surface 64 facing outward. When the detection device 110 is not attached to the cover member 60, the end 24 of the light-emitting unit 20 opposite to the light-receiving unit 30, as viewed from the direction of the perpendicular N of the flexible substrate 40, overlaps with the light-shielding filter 86.

[0081] Therefore, the detection device 110 can use the light-shielding filter 86 to block light emitted from the light-emitting unit 20 that does not enter the light-receiving unit 30. This reduces stray light. When the shape of the cover member 60 is convex, the light emitted from the end 24 of the light-emitting unit 20 does not go toward the light-receiving unit 30, so considering the reduction of stray light, it is preferable to block the light before it enters the living body M.

[0082] The detection device 110 includes a light-shielding filter 86 as a second light-shielding filter that blocks light directed toward the light-receiving unit 30. When the detection device 110 is not attached to the cover member 60, the end 34 of the light-receiving unit 30 opposite to the light-emitting unit 20, as viewed from the direction of the perpendicular N of the flexible substrate 40, overlaps with the light-shielding filter 86.

[0083] Therefore, the detection device 110 can block light that is not from the living organism M using the light-shielding filter 86. As a result, the light-receiving unit 30 can have a high signal-to-noise ratio (SNR). Consequently, the light-receiving unit 30 can receive light from the living organism M with high precision, and the amount of light emitted by the light-emitting unit 20 can be reduced. Consequently, power consumption can be reduced. Examples of light that is not from the living organism M include sunlight and the light from fluorescent lamps in the room where the detection device 110 is located.

[0084] In the detection device 110, the further the light-emitting unit 20 is from the light-receiving unit 30, the greater the distance between the end 24 of the light-emitting unit 20 and the boundary line between the light-transmitting filter 82 and the light-shielding filter 86. Therefore, the light-shielding filter 86 can more reliably block light emitted from the light-emitting unit 20 that does not enter the light-receiving unit 30.

[0085] In the detection device 110, the further the light-receiving unit 30 is from the light-emitting unit 20, the greater the distance between the end 34 of the light-receiving unit 30 and the boundary line between the incident light transmission filter 84 and the light-shielding filter 86. Therefore, the light-shielding filter 86 can more reliably block light that is not from the living organism M.

[0086] In the above example, the light-shielding filter 86 was a common light-shielding filter that had both functions as a first light-shielding filter that shields light emitted from the light-emitting unit 20 and a second light-shielding filter that shields light directed toward the light-receiving unit 30. Although not shown in the figures, the first light-shielding filter and the second light-shielding filter may be separate light-shielding filters.

[0087] Furthermore, in the above example, the shape of the cover member 60 was convex, with the first surface 62 facing inward and the second surface 64 facing outward. Although not shown in the figures, the shape of the cover member 60 may also be concave, with the first surface 62 facing outward and the second surface 64 facing inward. In this case, when viewed from the Z-axis direction, the light-shielding filter 86 overlaps with the end of the light-emitting unit 20 on the light-receiving unit 30 side, and further overlaps with the end of the light-receiving unit 30 on the light-emitting unit 20 side.

[0088] Furthermore, because the light-emitting section 20 and the light-receiving section 30 are flexible, it is not necessary to increase the thickness of the flexible sealing layer 70 and filters 82, 84, 86 in order to eliminate the air layer between the light-emitting section 20 and the cover member 60, and between the light-receiving section 30 and the cover member 60. Therefore, the thickness of the sealing layer 70 and filters 82, 84, 86 can be reduced compared to, for example, the case where a sealing layer and filters are provided to cover the non-flexible light-emitting section and light-receiving section.

[0089] 2.2. Second Variation Next, a detection device according to a second modified example of this embodiment will be described with reference to the drawings. Figure 12 is a schematic plan view showing the detection device 210 according to the second modified example of this embodiment. Figure 13 is a schematic cross-sectional view taken along line XIII-XIII in Figure 12 showing the detection device 210 according to the second modified example of this embodiment. Figures 14 and 15 are schematic cross-sectional views showing the detection device 210 according to the second modified example of this embodiment in use.

[0090] Figures 12 and 13 show the state in which the detection device 210 is not attached to the cover member 60. Figures 14 and 15 show the state in which the detection device 210 is attached to the cover member 60.

[0091] The detection device 210 differs from the detection device 10 described above in that, as shown in Figures 12 and 13, it has multiple light-emitting units 20 and multiple light-receiving units 30.

[0092] As shown in Figure 12, the multiple light-emitting units 20 and multiple light-receiving units 30 are arranged in a matrix in the X-axis and Y-axis directions when viewed from the Z-axis direction. The light-emitting units 20 and light-receiving units 30 are arranged alternately in the X-axis direction. The light-emitting units 20 and light-receiving units 30 are arranged alternately in the Y-axis direction.

[0093] Viewed from the Z-axis direction, on the main surface 41 of the flexible substrate 40, light-emitting parts 20d and 20e of the multiple light-emitting parts 20 are aligned in a first direction. In the illustrated example, the first direction is the X-axis direction. Light-emitting parts 20f and 20g of the multiple light-emitting parts 20 are aligned in a second direction intersecting the first direction. In the illustrated example, the second direction is perpendicular to the first direction and is the Y-axis direction. Light-emitting parts 20d and 20e are adjacent to each other in the X-axis direction. Light-emitting parts 20f and 20g are adjacent to each other in the Y-axis direction.

[0094] Viewed from the Z-axis direction, light-receiving units 30d and 30e of the multiple light-receiving units 30 are aligned in the X-axis direction. Light-receiving units 30f and 30g of the multiple light-receiving units 30 are aligned in the Y-axis direction. Light-receiving units 30d and 30e are adjacent to each other in the X-axis direction. Light-receiving units 30f and 30g are adjacent to each other in the Y-axis direction.

[0095] Viewed from the Z-axis direction, the light-emitting unit 20d is located between the light-receiving unit 30d and the light-receiving unit 30e. Furthermore, the light-emitting unit 20d is located between the light-receiving unit 30f and the light-receiving unit 30g. The light-receiving unit 30d is located between the light-emitting unit 20d and the light-emitting unit 20e. Furthermore, the light-receiving unit 30d is located between the light-emitting unit 20f and the light-receiving unit 20g.

[0096] In the detection device 210, when viewed from the direction of the perpendicular N of the flexible substrate 40, the light-receiving unit 30d as the first light-receiving unit and the light-receiving unit 30e as the second light-receiving unit are aligned in the first direction, the light-receiving unit 30f as the third light-receiving unit and the light-receiving unit 30g as the fourth light-receiving unit are aligned in the second direction intersecting the first direction, and the light-emitting unit 20d as the first light-emitting unit is provided between the light-receiving unit 30d and the light-receiving unit 30e, and also between the light-receiving unit 30f and the light-receiving unit 30g.

[0097] Therefore, in the detection device 210, as shown in Figure 14, if the shape of the cover member 60 is convex with the first surface 62 facing inward and the second surface 64 facing outward, the light from the living organism M based on the light emitted from the light-emitting unit 20d is received by the light-receiving unit 30e. As shown in Figure 15, if the shape of the cover member 60 is concave with the first surface 62 facing outward and the second surface 64 facing inward, the light from the living organism M based on the light emitted from the light-emitting unit 20d is received by the light-receiving unit 30d.

[0098] Thus, the detection device 210 can receive light from the living organism M based on the light emitted from the light-emitting unit 20d, regardless of whether the shape of the cover member 60 is convex or concave, and regardless of the shape of the detection device 210 in use.

[0099] In the detection device 210, on the main surface 41 of the flexible substrate 40, the light-emitting part 20d as the first light-emitting part and the light-emitting part 20e as the second light-emitting part are aligned in the first direction, the light-emitting part 20f as the third light-emitting part and the light-emitting part 20g as the fourth light-emitting part are aligned in the second direction, and the light-receiving part 30d as the first light-receiving part is provided between the light-emitting part 20d and the light-emitting part 20e, and also between the light-emitting part 20f and the light-receiving part 20g.

[0100] Therefore, in the detection device 210, regardless of whether the shape of the cover member 60 is convex or concave, the light receiving unit 30d can receive light from the living organism M based on light emitted from at least one of the light emitting units 20d, 20e, 20f, and 20g, regardless of the shape of the detection device 210 in use.

[0101] 2.3. Third Variation Next, a detection device according to a third modified example of this embodiment will be described with reference to the drawings. Figure 16 is a schematic plan view showing the detection device 310 according to the third modified example of this embodiment. Figure 17 is a schematic cross-sectional view taken along line XVII-XVII of Figure 16, showing the detection device 310 according to the third modified example of this embodiment. Figures 18 and 19 are schematic cross-sectional views showing the detection device 310 according to the third modified example of this embodiment in use.

[0102] Figures 16 and 17 show the state in which the detection device 310 is not attached to the cover member 60. Figures 18 and 19 show the state in which the detection device 310 is attached to the cover member 60.

[0103] In the detection device 310, as shown in Figures 16 and 17, the light-receiving unit 30 surrounds the light-emitting unit 20 on the main surface 41 of the flexible substrate 40 when viewed from the Z-axis direction, which is different from the detection device 10 described above.

[0104] In the example shown in Figure 16, the shape of the light-emitting part 20 is circular when viewed from the Z-axis direction. The shape of the light-receiving part 30 is ring-shaped when viewed from the Z-axis direction. The center and position of the light-emitting part 20 and the center and position of the light-receiving part 30 are the same when viewed from the Z-axis direction.

[0105] As shown in Figure 17, the light-emitting section 20 has a one-sided portion 25 located on one side of the virtual line B when viewed from the Z-axis direction, and a other-sided portion 26 located on the other side of the virtual line B. The virtual line B is a straight line that passes through the center of the light-emitting section 20 and is parallel to the Y-axis. In the illustrated example, the one-sided portion 25 is located in the -X-axis direction relative to the virtual line B. The other-sided portion 26 is located in the +X-axis direction relative to the virtual line B.

[0106] In the detection device 310, the light-receiving unit 30 surrounds the light-emitting unit 20 on the main surface 41 of the flexible substrate 40.

[0107] Therefore, in the detection device 310, as shown in Figure 18, when the shape of the cover member 60 is convex, the light emitted from one side portion 25 of the light-emitting unit 20 is incident on the light-receiving unit 30 on the side closer to the one side portion 25. The light emitted from the other side portion 26 of the light-emitting unit 20 is incident on the light-receiving unit 30 on the side closer to the other side portion 26. As shown in Figure 19, when the shape of the cover member 60 is concave, the light emitted from one side portion 25 is incident on the light-receiving unit 30 on the side closer to the other side portion 26. The light emitted from the other side portion 26 is incident on the light-receiving unit 30 on the side closer to the one side portion 25.

[0108] Thus, the detection device 310 can receive light from the living organism M based on the light emitted from the light-emitting unit 20, regardless of whether the shape of the cover member 60 is convex or concave, and regardless of the shape of the detection device 310 in use.

[0109] The embodiments and variations described above are examples only and are not limited thereto. For example, each embodiment and each variation can be combined as appropriate.

[0110] The present invention includes configurations substantially identical to those described in the embodiments, for example, configurations with the same function, method, and results, or configurations with the same purpose and effect. Furthermore, the present invention includes configurations in which non-essential parts of the configurations described in the embodiments are replaced. Furthermore, the present invention includes configurations that produce the same effects or achieve the same purpose as those described in the embodiments. Finally, the present invention includes configurations that add known technology to the configurations described in the embodiments.

[0111] The following can be derived from the embodiments and modifications described above.

[0112] One aspect of the detection device is: Flexible circuit board and The flexible substrate is provided with a first light-emitting unit that emits light toward a living organism, A first light-receiving unit is provided on the flexible substrate and is capable of receiving light from the living organism based on light emitted from the first light-emitting unit, Includes, The first light-emitting section is composed of a flexible organic light-emitting diode. The detection device comprises a first light-receiving unit composed of a flexible organic photodetector.

[0113] This detection device allows for a greater amount of light received by the light-receiving unit.

[0114] In one embodiment of the detection device, The detection device is attached to the cover member that comes into contact with the living body. The light emitted from the first light-emitting part passes through the cover member and enters the living body. The first light-emitting unit, the first light-receiving unit, and the flexible substrate may be deformable according to the shape of the cover member.

[0115] According to this detection device, it can be attached to the cover member without any air gap between the detection device and the cover member.

[0116] In one embodiment of the detection device, It includes a first light-shielding filter that blocks the light emitted from the first light-emitting unit, The cover member is The first surface to which the detection device is attached, The second surface, which is in contact with the living organism and opposite to the first surface, It has, The shape of the cover member is convex, with the first surface facing inward and the second surface facing outward. When the detection device is not attached to the cover member, when viewed from the perpendicular direction of the flexible substrate, The end of the first light-emitting section opposite to the first light-receiving section may overlap with the first light-shielding filter.

[0117] This detection device can reduce stray light.

[0118] In one embodiment of the detection device, It includes a second light-shielding filter that blocks light directed toward the first light-receiving unit, When the detection device is not attached to the cover member, when viewed from the perpendicular direction of the flexible substrate, The end of the first light-receiving section opposite to the first light-emitting section may overlap with the second light-shielding filter.

[0119] This detection device can block light that is not from a living organism, based on the light emitted from the first light-emitting unit.

[0120] In one embodiment of the detection device, The flexible substrate includes a second light-receiving section, a third light-receiving section, and a fourth light-receiving section, which are provided on the flexible substrate and capable of receiving light from the living organism based on the light emitted from the first light-emitting section. The second light-receiving unit, the third light-receiving unit, and the fourth light-receiving unit are composed of flexible organic photodetectors. On the main surface of the flexible substrate, The first light-receiving unit and the second light-receiving unit are arranged in a first direction, The third light-receiving unit and the fourth light-receiving unit are arranged in a second direction intersecting the first direction, The first light-emitting unit may be provided between the first light-receiving unit and the second light-receiving unit, and also between the third light-receiving unit and the fourth light-receiving unit.

[0121] This detection device allows for the reception of light from a living organism based on light emitted from the first light-emitting unit, regardless of the shape of the detection device in use. In one embodiment of the detection device,

[0122] In one embodiment of the detection device, The flexible substrate includes a second light-emitting unit, a third light-emitting unit, and a fourth light-emitting unit that emit light toward the living organism, The second light-emitting section, the third light-emitting section, and the fourth light-emitting section are composed of flexible organic light-emitting diodes. On the main surface of the flexible substrate, The first light-emitting section and the second light-emitting section are arranged in the first direction, The third light-emitting section and the fourth light-emitting section are arranged in the second direction, The first light-receiving unit may be provided between the first light-emitting unit and the second light-emitting unit, and also between the third light-emitting unit and the fourth light-emitting unit.

[0123] According to this detection device, regardless of the shape of the detection device in use, the first light-receiving unit can receive light from a living organism based on light emitted from at least one of the first light-emitting unit, the second light-emitting unit, the third light-emitting unit, and the fourth light-emitting unit.

[0124] In one embodiment of the detection device, the first light-emitting unit and the first light-receiving unit are arranged in a first direction on the flexible substrate and, when attached to the living body, may be deformed into a curved shape that is bent in an arc along the first direction.

[0125] In one embodiment of the detection device, On the main surface of the flexible substrate, the first light-receiving portion may surround the first light-emitting portion.

[0126] This detection device allows for the reception of light from a living organism based on light emitted from the first light-emitting unit, regardless of the shape of the detection device in use.

[0127] One embodiment of the measuring device is: One embodiment of the detection device, An information analysis unit that identifies biological information from a detection signal indicating the detection result by the aforementioned detection device, Includes. [Explanation of symbols]

[0128] 10...Detection device, 12...Storage device, 14...Display device, 16...Control device, 20, 20a, 20b, 20c, 20d, 20e, 20f, 20g...Light-emitting part, 21...First part, 22...Second part, 23...Third part, 24...End, 25...One side part, 26...Other side part, 30, 30a, 30b, 30c, 30d, 30e, 30f, 30g...Light-receiving part, 31...Fourth part, 32 ...Part 5, 34...End section, 40...Flexible substrate, 41...Main surface, 42...Drive circuit, 44...Output circuit, 50...Spacer member, 60...Cover member, 62...First surface, 64...Second surface, 70...Sealing layer, 80...Angle limiting filter, 82...Ejection light transmission filter, 84...Incident light transmission filter, 86...Light shielding filter, 100...Measuring device, 210, 310...Detection device

Claims

1. Flexible circuit board and The flexible substrate is provided with a first light-emitting unit that emits light toward a living organism, A first light-receiving unit is provided on the flexible substrate and is capable of receiving light from the living organism based on light emitted from the first light-emitting unit, It includes a first light-shielding filter that blocks the light emitted from the first light-emitting part, The first light-emitting section is composed of a flexible organic light-emitting diode. The first light-receiving unit is composed of a flexible organic photodetector. The first light-emitting unit and the first light-receiving unit are attached to the cover member that comes into contact with the living body. The light emitted from the first light-emitting part passes through the cover member and enters the living body. The first light-emitting unit, the first light-receiving unit, and the flexible substrate are deformable according to the shape of the cover member. The cover member has a first surface to which the first light-emitting portion and the first light-receiving portion are attached, and a second surface that comes into contact with the living body and is opposite to the first surface. The shape of the cover member is convex, with the first surface facing inward and the second surface facing outward. When the first light-emitting unit and the first light-receiving unit are not attached to the cover member, when viewed from the perpendicular direction of the flexible substrate, A detection device in which the end of the first light-emitting section opposite to the first light-receiving section overlaps with the first light-shielding filter.

2. Claim 1 includes a second light-shielding filter that blocks light directed toward the first light-receiving unit, When the detection device is not attached to the cover member, when viewed from the perpendicular direction of the flexible substrate, A detection device in which the end of the first light-receiving section opposite to the first light-emitting section overlaps with the second light-shielding filter.

3. In either claim 1 or 2, The flexible substrate includes a second light-receiving section, a third light-receiving section, and a fourth light-receiving section, which are provided on the flexible substrate and capable of receiving light from the living organism based on the light emitted from the first light-emitting section. The second light-receiving unit, the third light-receiving unit, and the fourth light-receiving unit are composed of flexible organic photodetectors. On the main surface of the flexible substrate, The first light-receiving unit and the second light-receiving unit are arranged in a first direction, The third light-receiving unit and the fourth light-receiving unit are arranged in a second direction intersecting the first direction, A detection device in which the first light-emitting unit is provided between the first light-receiving unit and the second light-receiving unit, and also between the third light-receiving unit and the fourth light-receiving unit.

4. In claim 3, The flexible substrate includes a second light-emitting unit, a third light-emitting unit, and a fourth light-emitting unit that emit light toward the living organism, The second light-emitting section, the third light-emitting section, and the fourth light-emitting section are composed of flexible organic light-emitting diodes. On the main surface of the flexible substrate, The first light-emitting section and the second light-emitting section are arranged in the first direction, The third light-emitting section and the fourth light-emitting section are arranged in the second direction, The detection device is provided with the first light receiving unit between the first light-emitting unit and the second light-emitting unit, and between the third light-emitting unit and the fourth light-emitting unit.

5. In either claim 1 or 2, The first light-emitting unit and the first light-receiving unit are arranged in a first direction on the flexible substrate. A detection device that, when attached to the living organism, deforms into a curved shape bent in an arc along the first direction.

6. In claim 1, A detection device in which, on the main surface of the flexible substrate, the first light-receiving unit surrounds the first light-emitting unit.

7. A detection device according to any one of claims 1 to 6, An information analysis unit that identifies biological information from a detection signal indicating the detection result by the aforementioned detection device, A measuring device, including a measuring device.

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