Detection device

Abstract

To provide a detection device that can easily acquire highly accurate biological information. [Solution] The detection device comprises a light sensor and a light source, and includes a dome-shaped or spherical translucent housing that covers the light sensor and the light source, and the light sensor and the light source are arranged on the same plane in a plan view.

Description

Technical Field

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

Background Art

[0002] Optical sensors capable of detecting fingerprint patterns and vein patterns are known (for example, Patent Document 1). Such optical sensors are incorporated into wearable devices such as smartwatches, wristwatches, and wristbands, and are used to acquire biological information such as pulse waves.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the detection device using the optical sensor of Document 1, there is a possibility that the measurement accuracy may decrease due to body movement or external light.

[0005] An object of the present disclosure is to provide a detection device capable of easily acquiring highly accurate biological information.

Means for Solving the Problems

[0006] A detection device according to an aspect of the present disclosure includes an optical sensor and a light source, and includes a translucent dome-shaped or truncated cone-shaped housing that covers the optical sensor and the light source, and the optical sensor and the light source are arranged on the same plane in a plan view.

Brief Description of the Drawings

[0007] [Figure 1] FIG. 1 is a schematic cross-sectional view of a detection device according to Embodiment 1 housed in the umbilicus of a human body. [Figure 2]Figure 2 is a schematic cross-sectional view of the detection device according to Embodiment 1. [Figure 3] Figure 3 is a block diagram showing an example of the configuration of the control circuit of the detection device. [Figure 4] Figure 4 is a plan view of the section IV-IV' in Figure 2. [Figure 5] Figure 5 is a plan view of the VV' section in Figure 2. [Figure 6] Figure 6 is a plan view of the VI-VI' section in Figure 2. [Figure 7] Figure 7 is another example of the VI-VI' section in Figure 2, and is a plan view of the detection device according to Embodiment 2. [Figure 8] Figure 8 is a schematic cross-sectional view of a detection device according to a modified example 1 of Embodiment 2. [Figure 9] Figure 9 is a plan view of the IX-IX' section in Figure 8. [Figure 10] Figure 10 is a schematic cross-sectional view of a detection device according to a modified example 2 of Embodiment 2. [Figure 11] Figure 11 is a plan view of the XI-XI' section in Figure 10. [Figure 12] Figure 12 is a schematic cross-sectional view showing the detection device according to Embodiment 3 in a state where it is placed in the navel of a human body. [Figure 13] Figure 13 is a schematic diagram showing an example of the configuration of the communication antenna of the detection device according to Embodiment 4. [Figure 14] Figure 14 is a schematic diagram showing an example of the configuration of the communication antenna of a detection device according to a comparative example. [Figure 15] Figure 15 is a schematic diagram showing an example of the configuration of a communication antenna for a detection device according to a modified example of Embodiment 4. [Figure 16] Figure 16 is a cross-sectional view of the detection device according to Embodiment 5. [Figure 17] Figure 17 is a plan view of the detection device according to Embodiment 5. [Modes for carrying out the invention]

[0008] Embodiments for implementing the present disclosure will be described in detail with reference to the drawings. The present disclosure is not limited by the content described in the following embodiments. Further, the components described below include those that can be easily assumed by those skilled in the art and substantially identical ones. Furthermore, the components described below can be combined as appropriate. Note that the disclosure is merely an example, and for those that can be easily conceived by those skilled in the art with appropriate modifications while maintaining the gist of the present disclosure, they are naturally included in the scope of the present disclosure. In addition, for the purpose of making the description clearer, the drawings may schematically represent the width, thickness, shape, etc. of each part compared to the actual aspect, but this is merely an example and does not limit the interpretation of the present disclosure. Also, in the present disclosure and each figure, elements similar to those described above in the previously presented figures may be denoted by the same reference numerals, and detailed descriptions may be omitted as appropriate.

[0009] In the present disclosure, when expressing the aspect of arranging one structure on another structure, when simply denoted as "on", unless otherwise specified, it includes both the case of arranging another structure directly above so as to be in contact with a certain structure and the case of arranging another structure above a certain structure through yet another structure.

[0010] (Embodiment 1) FIG. 1 is a schematic cross-sectional view of the detection device according to Embodiment 1 housed in the navel of a human body. FIG. 2 is a schematic cross-sectional view of the detection device according to Embodiment 1. FIG. 3 is a block diagram showing a configuration example of the control circuit of the detection device. FIG. 4 is a plan view in the IV-IV' cross-section of FIG. 2. FIG. 5 is a plan view in the V-V' cross-section of FIG. 2. FIG. 6 is a plan view in the VI-VI' cross-section of FIG. 2.

[0011] As shown in FIG. 1, the detection device 1 according to Embodiment 1 is a device that can be detachably attached to the umbilical fossa 101 of the human body Bd. The detection device 1 is attached to the umbilical fossa 101. The detection device 1 can detect biological information regarding the living body from the attached umbilical fossa 101. The umbilical fossa 101 is an example of a measurement target. The measurement target is a living body or a part of a living body and is a measurement target object.

[0012] As shown in FIG. 2, the detection device 1 includes a housing 200, a light source 150, an optical sensor 60, and circuit boards 80 and 81.

[0013] The housing 110 is dome-shaped and has light-transmitting properties. The housing 110 covers the optical sensor 60 and the light source 150. The housing 110 is, for example, a transparent resin.

[0014] Thereby, the detection device 1 can surely house the housing 200 in the umbilical fossa 101, so that the adhesion can be improved.

[0015] Also, the housing 110 has a bottom surface 110a. The bottom surface 110a has light-shielding properties.

[0016] The circuit boards 80 and 81 employ flexible PCBs (Printed Circuit Boards). Note that the circuit boards 80 and 81 may be configured using substrates generally employed as FPCs (Flexible Printed Circuits).

[0017] Furthermore, the detection device 1 includes a charge control driver 170, a battery driver 180, a battery 108, a charging coil 109, a control circuit 102, a temperature sensor 103, an acceleration sensor 104, an LED driver 105, a memory 106, a communication driver 107, and a communication antenna 171 provided inside the housing 200.

[0018] Details of the configuration examples of the charge control driver 170, the battery driver 180, the battery 108, the charging coil 109, the control circuit 102, the temperature sensor 103, the acceleration sensor 104, the LED driver 105, the memory 106, the communication driver 107, and the communication antenna 171 will be described later with reference to FIG. 3.

[0019] The light source 150 uses multiple types of LEDs (Light Emitting Diodes). As shown in Figure 4, the light source 150 has a red LED 151, a near-infrared LED 152, and a green LED 153. The red LED 151 emits red light. The near-infrared LED 152 emits near-infrared light. The green LED 153 emits green light.

[0020] The light source 150 irradiates light inside the umbilical fossa. The light sensor 60 is, for example, an organic photodiode (OPD). The light sensor 60 detects the light output from the red LED 151, near-infrared LED 152, and green LED 153, which is reflected inside the human body Bd through the umbilical fossa 101. The light sensor 60 detects changes in the intensity of the input light. The light sensor 60 is, for example, an organic photodiode (OPD) and outputs an electrical signal corresponding to the irradiated light. The light sensor 60 may also be a PIN (Positive Intrinsic Negative) photodiode made of a semiconductor such as silicon.

[0021] If the red LED 151 is lit and the near-infrared LED 152 and green LED 153 are not lit, the red light passing through the umbilical fossa 101 is detected by the light sensor 6. If the near-infrared LED 152 is lit and the red LED 151 and green LED 153 are not lit, the near-infrared light passing through the umbilical fossa 101 is detected by the light sensor 6. If the green LED 153 is lit and the red LED 151 and near-infrared LED 152 are not lit, the green light passing through the umbilical fossa 101 is detected by the light sensor 6.

[0022] The temperature sensor 103 detects the temperature of the umbilicus 101 when the detection device 1 is inserted into the umbilicus 101. When the detection device 1 is not inserted into the umbilicus 101, the temperature sensor 103 detects the temperature of the ambient environment around the housing 110. The temperature sensor 103 supplies information indicating the detected temperature to the control circuit 102.

[0023] The acceleration sensor 104 detects the acceleration applied to the detection device 1. The acceleration sensor 104 supplies information indicating the detected acceleration to the control circuit 102. The detected acceleration value can be used to eliminate the influence of the user's body movement on the detection device 1.

[0024] The LED driver 54 drives the red LED 51, the near-infrared LED 52, and the green LED 53 to emit light.

[0025] Memory 106 is a storage unit that stores various types of data. Memory 5 may include, for example, RAM (Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), etc. Memory 5 stores various types of information used by the control circuit 102. Memory 5 may be included in the control circuit 102.

[0026] The communication driver 107 is, for example, a short-range wireless communication driver and has a communication antenna 171. The communication antenna 171 is, for example, a BLE (Bluetooth Low Energy) communication antenna. The communication driver 107 transmits signals between the detection device 1 and other devices. The communication driver 107 can transmit data measured by various parts of the detection device 1 to other devices. The communication driver 107 can also receive data transmitted by other devices.

[0027] Battery 108 supplies power to each part of the detection device 1. Battery 108 is, for example, a lithium-ion battery.

[0028] Furthermore, the charge control driver 170 is electrically connected to the battery 108 and the charging coil 109. The charge control driver 170 controls the charging of the battery 108 by adjusting the power supplied from the battery 108.

[0029] The battery driver 180 controls the battery 108. The battery 108 is charged by the battery driver 180.

[0030] The charging coil 109 is a coil for charging the battery 108. The charging coil 109 is electrically connected to a rectifier circuit (not shown) and magnetically couples with a power transmission coil such as a charger when it approaches it, receiving the electromagnetic field from the power transmission coil and converting it into electric current. The charging coil 109 may also be shared with an NFC (Near Field Communication) antenna to capture electromagnetic waves in space and absorb energy.

[0031] As shown in Figure 2, the battery 108 is located on the bottom surface 110a side of the housing 110 of the circuit board 80, and the light sensor 60 is positioned on the top side of the housing 110 of the circuit board 80.

[0032] As shown in Figure 4, the light sensor 60 and the light source 150 are arranged on the same plane in a plan view. The light sensor 60 is located in the center of the housing 110 in a plan view. The multiple light sources 150 are arranged around the light sensor 60 in a plan view. The light sensor 60 is surrounded by a light-shielding wall LS in a plan view. The light sources 150, namely the red LED 151, the near-infrared LED 152, and the two green LEDs 153, are each arranged around the light-shielding wall LS.

[0033] This allows the green LED 153 to be lit, and the optical change incident on the light sensor 60 to be measured by the light sensor 60, thereby measuring the pulse wave, and the pulse wave interval (RRI (RR Interval)) to be measured from the waveform of the pulse wave.

[0034] Furthermore, the red LED 151 and the near-infrared LED 152 are alternately illuminated, and the blood oxygen concentration is calculated from the difference in absorbed light. Because the light sensor 60 is located inside the umbilical fossa 101, artifacts caused by external light, as seen in watch-type or ring-type devices, do not occur, and highly accurate biological information can be easily obtained.

[0035] As shown in Figure 4, the maximum diameter of the housing 110 is 3 cm or less in a plan view. The maximum diameter of the housing 110 is such that it fits within the umbilical fossa 101.

[0036] As shown in Figure 5, the acceleration sensor 104 is positioned on the same plane as the control circuit 102.

[0037] The acceleration sensor 104 is positioned close to the center of gravity of the human body, and by measuring acceleration in three axes, the detection device 1 according to Embodiment 1 can accurately measure the amount of activity without being affected by arm swing.

[0038] Furthermore, by positioning the acceleration sensor 104 close to the center of gravity of the human body and measuring the acceleration in three axes, the detection device 1 according to Embodiment 1 can measure the respiratory rate during sleep from the movement of the diaphragm.

[0039] As shown in Figure 5, the housing 110 includes a control circuit 102 on the back of the light sensor 60 and light source 150, via a circuit board 80 and a battery 108.

[0040] As shown in Figure 5, the control circuit 102 is positioned at the center of the circuit board 81, and the LED driver 105, memory 106, battery driver 180, charge control driver 170, acceleration sensor 104, and temperature sensor 103 are arranged clockwise around the control circuit 102 in that order.

[0041] As shown in Figures 5 and 6, a charging coil 109 and a communication antenna 171 are located on the back of the control circuit 102.

[0042] As shown in Figure 6, the communication antenna 171 is positioned in the center of the housing 110 in a plan view, and the charging coil 109 is donut-shaped and is positioned to be wound around the communication antenna 171 in a plan view.

[0043] This can improve charging efficiency and communication speed.

[0044] As shown in Figure 3, the control circuit 102 controls each part of the detection device 1. The control circuit 102 includes, for example, an MCU (Micro Control Unit). The control circuit 102 is, for example, an IC (Integrated Circuit) such as a microcontroller or a PLD (Programmable Logic Device) such as an FPGA (Field Programmable Gate Array). The control circuit 102 has a temperature measurement circuit 12, an acceleration measurement circuit 13, an optical pulse wave measurement circuit 14, a communication circuit 16, and a power supply circuit 17.

[0045] The temperature measurement circuit 12 is electrically connected to the temperature sensor 103. The temperature measurement circuit 12 acquires body temperature data from the temperature sensor 103.

[0046] This allows for easy measurement of core body temperature at the navel. Furthermore, by using it in the umbilical cavity of newborns as an alternative to an umbilical plug, it can be used to measure vital signs while simultaneously addressing umbilical hernias, enabling early detection of respiratory and cardiovascular problems.

[0047] The acceleration measurement circuit 13 is electrically connected to the acceleration sensor 104. The acceleration measurement circuit 13 acquires activity levels based on the acceleration data from the acceleration sensor 104.

[0048] The optical pulse wave measurement circuit 14 is connected to the LED driver 105 and the light sensor 60. Based on the detection data from the light sensor 60, the optical pulse wave measurement circuit 14 measures at least one of the pulse frequency or blood oxygen concentration.

[0049] The communication circuit 16 is connected to the communication driver 107. The communication circuit 16 transmits measurement results and other information to an external device.

[0050] The external device is, for example, a mobile device such as a smartphone or tablet held by the user of detection device 1. The mobile device, such as a smartphone or tablet, has a display screen.

[0051] The detection device 1 can easily output the data it receives to an external device via BLE communication, allowing for verification of the output data.

[0052] The power supply circuit 17 is connected to the battery driver 180. The battery driver 180 is electrically connected to the battery 108 and the charging coil 109. The power supply circuit 17 controls the charging of the battery 108 and supplies power from the battery 108 to various parts.

[0053] (Embodiment 2) Figure 7 is another example of the VI-VI' section in Figure 2, and is a plan view of the detection device according to Embodiment 2. In the following description, the same reference numerals are used for the same components as those described in the above-described embodiment, and redundant explanations are omitted.

[0054] The detection device 1A according to Embodiment 2 has a light source 154 that integrates a red LED 151, a near-infrared LED 152, and a green LED 153.

[0055] The light sensor 60 and the light source 154 are arranged on the same plane in a plan view. The light source 154 is located in the center of the housing 110 in a plan view. The four light sensors 60 are arranged around the light source 154 in a plan view. The light source 154 is surrounded by a light-shielding wall LS in a plan view. Since there is a light-shielding wall LS between the light source 150 and the light sensors 60, the light that directly reaches the light sensors 60 from the light source 150 is attenuated. The light from the light source 150 then reaches the light sensors 60 via the umbilical fossa 101 of the human body Bd.

[0056] This increases the sensor sensitivity of the light sensor. As the sensor sensitivity increases, the detection device 1A according to Embodiment 2 may reduce the power required to drive the light source. As a result, the detection device 1A according to Embodiment 2 can extend the charging interval.

[0057] (Modification 1 of Embodiment 2) Figure 8 is a schematic cross-sectional view of a detection device according to Modification 1 of Embodiment 2. Figure 9 is a plan view of the IX-IX' section in Figure 8. In the following description, the same reference numerals are used for components that are the same as those described in the above-described embodiments, and redundant explanations are omitted.

[0058] As shown in Figure 9, in the detection device 1B according to Modification 1 of Embodiment 2, the housing 110 has an upper surface 110b. The upper surface 110b is parallel to the light source 154 and the light sensor 60A, and the shape of the upper surface 110b is flat. The housing 110 of the detection device 1B according to Modification 1 of Embodiment 2 is spherical, and is shaped like a sphere cut out by parallel upper surface 110b and bottom surface 110a. Because the light sensor 60A and the upper surface 110b are parallel, the transmittance of light reaching the light sensor 60A from the umbilical fossa 101 of the human body Bd through the upper surface 110b can be increased. As a result, the sensor sensitivity of the light sensor 60A is increased.

[0059] As shown in Figure 9, the light sensor 60A is a donut-shaped planar sensor. The light source 154 is positioned in the center of the housing 110 in a plan view. The light source 154 is surrounded by a light-shielding wall LS in a plan view. The light-shielding wall LS is between the light source 150 and the light sensor 60A. In other words, the light sensor 60A is positioned around the light source 154 in a plan view. The light from the light source 154 reaches the light sensor 60A via the umbilical fossa 101 of the human body Bd.

[0060] As a result, the detection device 1B according to the modified example 1 of Embodiment 2 has a larger light-receiving area for the optical sensor 60A than the detection device 1 according to Embodiment 1, thus increasing the sensor sensitivity. Due to the increased sensor sensitivity, the detection device 1B according to the modified example 1 of Embodiment 2 can reduce the power consumption of the light source.

[0061] (Modification 2 of Embodiment 2) Figure 10 is a schematic cross-sectional view of a detection device according to a modified example 2 of Embodiment 2. Figure 11 is a plan view of the XI-XI' section in Figure 10. In the following description, the same reference numerals are used for components that are the same as those described in the above-described embodiments, and redundant explanations are omitted.

[0062] As shown in Figure 10, the detection device 1C according to the modified example 2 of Embodiment 2 has an optical sensor 60A as a first optical sensor, similar to the detection device 1B according to the modified example 1 of Embodiment 2. The detection device 1C according to the modified example 2 of Embodiment 2 has a second optical sensor 60B arranged to surround the outer surface of the battery. The shape of the second optical sensor 60B is a frustoconical shape.

[0063] Furthermore, as shown in Figure 11, the second light sensor 60B is positioned in a plan view to surround the control circuit 102, LED driver 105, memory 106, battery driver 180, charge control driver 170, acceleration sensor 104, and temperature sensor 103.

[0064] As a result, the detection device 1C according to the modified example 2 of Embodiment 2 has a larger light-receiving area than the detection device 1B according to the modified example 1 of Embodiment 2, thus increasing the sensor sensitivity. Due to the increased sensor sensitivity, the detection device 1C according to the modified example 2 of Embodiment 2 can reduce the power consumption of the light source compared to the detection device 1B according to the modified example 1 of Embodiment 2.

[0065] The second light sensor 60B is formed as a fan-shaped ring in plan view, and then bent into a frustoconical shape, making it flexible and made of a good material.

[0066] (Embodiment 3) Figure 12 is a schematic cross-sectional view of the detection device according to Embodiment 3 in a state where it is placed in the navel of a human body. In the following description, the same reference numerals are used for the same components as those described in the above-described embodiments, and redundant explanations are omitted.

[0067] In the detection device 1D according to Embodiment 3, a light-shielding adhesive layer 90 is provided on the bottom surface 110a of the housing 110. The adhesive layer 90 is a flexible film that covers and fixes the area around the umbilical fossa 101 of the human body Bd.

[0068] As a result, there are no protrusions from the human body Bd, allowing the user to move freely without restrictions on clothing.

[0069] (Embodiment 4) Figure 13 is a schematic diagram showing an example of the configuration of the communication antenna of the detection device according to Embodiment 4. In the following description, the same reference numerals are used for components that are the same as those described in the above-described embodiment, and redundant explanations are omitted.

[0070] The shape of the communication antenna 171 of the detection device 1E according to Embodiment 4 has at least one of an inverted F-shaped portion 121 or a folding portion 120.

[0071] The communication antenna 171 is mounted on the circuit board 118, and the inverted F-shaped portion 121 is connected to the ground 119.

[0072] The length L of the communication antenna 171 is calculated using the following formula (1).

[0073] L = λ / 4√((1+ε) r ) / 2)···(1) Here, λ is the reflection wavelength, and ε r is the relative permittivity.

[0074] The communication frequency of the communication antenna 171 is 2.4 GHz, and the relative permittivity is ε r If the material is 4.6 (equivalent to glass epoxy), the antenna length L is approximately 20 mm. However, if the communication antenna 171 is a short-range wireless communication antenna, the antenna length L may be shorter than 20 mm.

[0075] Figure 14 is a schematic diagram showing an example of the configuration of the communication antenna of a detection device according to a comparative example. Compared to the communication antenna 171 of the detection device 1E according to Embodiment 4, the end 120a of the communication antenna 171a of the detection device 1E according to the comparative example is not folded, and the antenna length L is longer. As a result, the occupied area of ​​the communication antenna 171a becomes larger.

[0076] In contrast, the folding portion 120 of the detection device 1E of Embodiment 4 is folded two-dimensionally with respect to the length of the communication antenna 171.

[0077] As a result, the detection device 1E according to Embodiment 4 can reduce the area occupied by the communication antenna 171 compared to the detection device 1a according to the comparative example.

[0078] (Modified form of Embodiment 4) Figure 15 is a schematic diagram showing an example of the configuration of a communication antenna for a detection device according to a modified example of Embodiment 4. In the following description, the same reference numerals are used for components that are the same as those described in the above-described embodiments, and redundant explanations are omitted.

[0079] The folding portion 120A of the detection device 1F according to the modified embodiment 4 is folded three-dimensionally with respect to the length and thickness directions of the communication antenna 171A.

[0080] As a result, the detection device 1F according to the modified embodiment 4 can further reduce the area occupied by the communication antenna 171A compared to the detection device 1E according to embodiment 4.

[0081] (Embodiment 5) Figure 16 is a cross-sectional view of the detection device according to Embodiment 5. Figure 17 is a plan view of the detection device according to Embodiment 5. In the following description, the same reference numerals are used for components that are the same as those described in the above-described embodiments, and redundant descriptions are omitted.

[0082] The detection device 1G according to Embodiment 5 comprises a ring 10 that can be attached to a finger Fg of the human body, a housing 110, a support portion 201, a claw portion 210, and a crimping portion 220.

[0083] As shown in Figure 16, the ring 10 has a hollow portion 10A. The ring 10 is worn with a human finger Fg inserted into the hollow portion 10A and in contact with the finger Fg. The finger Fg includes the thumb, index finger, middle finger, ring finger, little finger, etc.

[0084] As shown in Figures 16 and 17, the support portion 201 is positioned to extend outward from the crimping portion 220 in four directions: up, down, left, and right. The dome-shaped housing 110 is housed inside the support portion 201. Since the support portion 201 has a certain degree of elasticity, it can securely clamp the housing 110.

[0085] The claw portion 210 is provided at the end of each of the four support portions 201. The claw portion 210 fixes the bottom surface 110a of the housing 110.

[0086] As shown in Figure 16, a crimping portion 220 is provided between the ring 10 and the housing 110 to crimp the top portion of the housing 110. One end of the ring 10 and each support portion 201 are fixed to the crimping portion 220.

[0087] The crimping portion 220 has an opening OP. The skin of the finger Fg attached to the hollow portion 10A comes into contact with the apex portion of the housing 110 through the opening OP.

[0088] As a result, the detection device 1G according to Embodiment 5 can detect information about the internal biological tissue, such as the finger Fg. This information about the biological tissue includes, for example, pulse waves, pulse rate, and vascular patterns of the finger or palm. In other words, the detection device 1G may be configured as a fingerprint detection device for detecting fingerprints or a vein detection device for detecting vascular patterns such as veins.

[0089] While preferred embodiments of this disclosure have been described above, this disclosure is not limited to such embodiments. The contents disclosed in the embodiments are merely examples, and various modifications are possible without departing from the spirit of this disclosure. Any modifications made without departing from the spirit of this disclosure will naturally fall within the technical scope of this disclosure. At least one of various omissions, substitutions, and modifications of components can be made without departing from the gist of each embodiment and each modification described above. [Explanation of Symbols]

[0090] 1, 1a, 1A, 1B, 1C, 1D, 1E, 1F, 1G detection device 90 Adhesive layer 102 Control circuits 103 Temperature Sensor 104 Accelerometer 60, 60A optical sensor 60B Second light sensor 107 Communication Driver 108 batteries 109 Charging Coil 110 cabinets 110a Bottom 110b Top side 121 Inverted F-shaped part 120, 120A Folding part 150, 154 light source 151 Red LEDs 152 Near-infrared LED 153 Green LED 171 Communication antenna

Claims

1. It has a light sensor and a light source, The light sensor and the light source are covered by a light-transmitting dome-shaped or spherical housing, The light sensor and the light source are arranged on the same plane in a plan view. Detection device.

2. The maximum diameter of the aforementioned housing is 3 cm or less in a plan view. The detection device according to claim 1.

3. The housing includes a control circuit on the back of the light sensor and the light source, A charging coil and a communication antenna are arranged on the back of the control circuit. The detection device according to claim 2.

4. Furthermore, it has an acceleration sensor, The acceleration sensor is arranged on the same plane as the control circuit. The detection device according to claim 3.

5. The bottom surface of the housing has light-shielding properties. The detection device according to claim 4.

6. The light source comprises a near-infrared LED that outputs near-infrared colored light, a red LED that outputs red light, and a green LED that outputs green light. The detection device according to claim 5.

7. The bottom surface of the housing is provided with a light-shielding adhesive layer. The detection device according to claim 6.

8. The charging coil is arranged in a plan view so as to be wound around the communication antenna. The detection device according to claim 7.

9. The light source is arranged around the light sensor in a plan view. The detection device according to claim 8.

10. The aforementioned light sensor is positioned around the light source in a plan view. The detection device according to claim 8.

11. A battery is provided between the light sensor and the light source and the control circuit. The light sensor comprises a first light sensor arranged on the same plane as the light source in a plan view, and a second light sensor arranged to surround the outer surface of the battery. The detection device according to claim 10.

12. The shape of the aforementioned communication antenna has at least one of an inverted F-shaped portion or a folding portion. The detection device according to claim 9 or 11.

13. It has a ring that can be worn on the finger, A crimping portion is provided between the ring and the housing to crimp the top portion of the housing. The detection device according to claim 12.

14. The aforementioned light sensor is an OPD (Organic Photodiode). The detection device according to claim 13.

15. The control circuit acquires the activity level based on the acceleration data from the acceleration sensor. The detection device according to claim 14.

16. The control circuit measures at least one of the pulse frequency or blood oxygen concentration based on the detection data from the optical sensor. The detection device according to claim 15.

17. Furthermore, it has a temperature sensor, The control circuit acquires body temperature data from the temperature sensor. The detection device according to claim 16.

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