Detection device

Abstract

To provide a detection device capable of reducing an amount of stray light to a light reception part generated by irregular reflection of light in a storage part while reducing the size of the detection device.SOLUTION: A detection device attached to a predetermined part of an object person includes: a base part having a surface orthogonal to a height direction with a predetermined height direction as an upper side; an acceleration detection part provided on the base part; a lid part for covering the acceleration detection part together with the base part over the base part; a control part provided on the lid part for detecting the body motion of the object person on the basis of the output of the acceleration detection part when the detection device is attached to the predetermined part; a biological information detection part having a light emission part for emitting light and a light reception part for receiving light; a first light blocking member positioned between the biological information detection part and the control part in a width direction intersecting with the height direction; and a storage part for storing the base part, the acceleration detection part, the lid part, the control part, the biological information detection part, and the first light blocking member.SELECTED DRAWING: Figure 27

Description

Technical Field

[0001] This disclosure relates to a detection device.

Background Art

[0002] Research and development have been conducted on detection devices that detect biological information such as pulse waves, heartbeats, and oxygen saturation by non-invasive methods.

[0003] Regarding this, there is known a detection device that is attached to a predetermined target site of a subject and has a light-emitting unit that emits light and a light-receiving unit that receives light, and based on the amount of light received by the light-receiving unit of the light reflected inside the target site among the light emitted from the light-emitting unit, a biological information detection unit that detects the biological information of the subject and an acceleration detection unit that detects the acceleration of the target site (see Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a detection device as described in Patent Document 1, the biological information detection unit and the acceleration detection unit are arranged in different spaces from each other. However, when attempting to miniaturize the detection device, it is desirable to arrange the biological information detection unit and the acceleration detection unit in the same space as each other and to bring the light-emitting unit and the light-receiving unit closer together. However, if the light-emitting unit and the light-receiving unit are brought closer together in the space where both the biological information detection unit and the acceleration detection unit are arranged, a part of the light emitted from the light-emitting unit is diffusely reflected in the space, and the diffusely reflected light is likely to be received by the light-receiving unit as stray light. This leads to a decrease in the detection accuracy of biological information, which is not desirable.

Means for Solving the Problems

[0006] In order to solve the above problems, one aspect of the present disclosure is a detection device attached to a predetermined site of a subject, including a base portion having a surface orthogonal to a predetermined height direction with the predetermined height direction being upward, an acceleration detection portion provided on the base portion, a lid portion provided on the base portion to cover the acceleration detection portion together with the base portion, a control portion provided on the lid portion to detect body movement of the subject based on an output of the acceleration detection portion when the detection device is attached to the site, a light emitting portion that emits light, a light receiving portion that receives the light, a biological information detection portion including the light emitting portion and the light receiving portion, a first light shielding member positioned between the biological information detection portion and the control portion in a width direction intersecting the height direction, and a housing portion that houses the base portion, the acceleration detection portion, the lid portion, the control portion, the biological information detection portion, and the first light shielding member.

Brief Description of the Drawings

[0007]

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Embodiments for Carrying Out the Invention

[0008] <Overview of the Present Disclosure> The following is an overview of the present disclosure. In the present disclosure, a detection device is attached to a predetermined target site of a subject, the detection device including a light-emitting unit that emits light and a light-receiving unit that receives light, and a biological information detection unit that detects biological information of the subject based on the amount of light received by the light-receiving unit from the light reflected inside the target site among the light emitted from the light-emitting unit, and an acceleration detection unit that detects the acceleration of the site. When the biological information detection unit and the acceleration detection unit are arranged in the same space as each other, the detection device can be miniaturized as compared with the case where the biological information detection unit and the acceleration detection unit are arranged in different spaces from each other. However, when the biological information detection unit and the acceleration detection unit are arranged in the same space as each other, it may cause an increase in the amount of light that enters the acceleration detection unit without passing through the target site among the light emitted from the light-emitting unit, an increase in the amount of light that enters the light-receiving unit as stray light among the light emitted from the light-emitting unit, an increase in the amount of light that enters the light-receiving unit due to the light diffusely reflected in the space among the light emitted from the light-emitting unit, and the like. An increase in the amount of light that enters the acceleration detection unit without passing through the target site among the light from the light-emitting unit induces thermal expansion of the acceleration detection unit, leading to a decrease in the detection accuracy of acceleration by the acceleration detection unit, which is not desirable. An increase in the amount of light that enters the light-receiving unit as stray light among the light from the light-emitting unit leads to a decrease in the detection accuracy of biological information, which is not desirable. And an increase in the amount of light that enters the light-receiving unit due to the light diffusely reflected in the space among the light emitted from the light-emitting unit also leads to a decrease in the detection accuracy of biological information, which is not desirable. Therefore, in the present disclosure, the configuration of the detection device that can solve at least one of these problems will be described. Such a configuration can be realized, for example, by each of the three embodiments of the first embodiment to the third embodiment described below, or by a combination of some or all of these three embodiments. Therefore, each of these three embodiments will be described in detail below. Note that each of these three embodiments, or a combination of some or all of these three embodiments, may be combined with other configurations as long as the functions of the detection device described below are not impaired.

[0009] <First Embodiment> Hereinafter, the first embodiment will be described with reference to the drawings.

[0010] <Outline of the Detection Device According to the First Embodiment> First, the outline of the detection device according to the first embodiment will be described.

[0011] The detection device according to the first embodiment is attached to a predetermined part of the subject. In this detection device, a predetermined first direction is treated as the upward direction. Further, the detection device includes a base, an acceleration detection unit, a lid portion, a control unit, a light emitting unit, a light receiving unit, and a housing portion. The base has a surface orthogonal to the first direction. The acceleration detection unit is provided on the base. The lid portion covers the acceleration detection unit together with the base on the base. The control unit is provided on the lid portion and detects the body movement of the subject based on the output of the acceleration detection unit when the detection device is attached to the part. The light emitting unit emits light. The light receiving unit receives light. The housing portion houses the base, the acceleration detection unit, the lid portion, the control unit, the light emitting unit, and the light receiving unit. And the height of the upper surface of the light emitting unit in the first direction is equal to or higher than the height of the bottom surface of the lid portion in the first direction. Also, the light emitting unit and the light receiving unit are provided on the same member. Thereby, the detection device can reduce the amount of light irradiated from the light emitting unit to the acceleration detection unit. As a result, the detection device can suppress the heating of the acceleration detection unit due to the incidence of light. Further, in the detection device, the light emitting unit and the light receiving unit that function as a biological information detection unit and the acceleration detection unit are housed in the housing portion. As a result, the detection device can be miniaturized as compared with the case where the light emitting unit and the light receiving unit that function as a biological information detection unit and the acceleration detection unit are housed in separate housing portions. That is, the detection device can suppress the heating of the acceleration detection unit due to the incidence of light while being miniaturized.

[0012] Hereinafter, the configuration of the detection device according to the first embodiment will be described in detail.

[0013] <Configuration of the Detection Device According to the First Embodiment> Hereinafter, the configuration of the detection device according to the first embodiment will be described by taking the detection device 1 as an example. In the first embodiment, for convenience of explanation, the user of the detection device 1 will be described as the first user. Also, in the first embodiment, for convenience of explanation, when looking at the detection device 1 in a certain direction, it will be described as when viewed from that direction. Note that the first user is an example of the target person.

[0014] FIG. 1 is a front view showing an example of the configuration of the detection device 1. FIG. 2 is a top view of the detection device 1 shown in FIG. 1. In FIG. 1, for clarity of the internal configuration of the detection device 1, the member covering the front inside of the detection device 1 is omitted. Also, in FIG. 2, for clarity of the internal configuration of the detection device 1, the member covering the top inside of the detection device 1 is omitted. Here, the three-dimensional coordinate system TC is a three-dimensional orthogonal coordinate system indicating the direction in the figure in which the three-dimensional coordinate system TC is drawn. In the present disclosure, for convenience of explanation, the X-axis in the three-dimensional coordinate system TC will be simply referred to as the X-axis. Also, in the present disclosure, for convenience of explanation, the Y-axis in the three-dimensional coordinate system TC will be simply referred to as the Y-axis. Also, in the present disclosure, for convenience of explanation, the Z-axis in the three-dimensional coordinate system TC will be simply referred to as the Z-axis. Also, in the present disclosure, for convenience of explanation, the positive direction of the Z-axis will be referred to as up or the upward direction, and the negative direction of the Z-axis will be referred to as down or the downward direction.

[0015] The detection device 1 is a device that detects biological information using light. In the first embodiment, as an example, the case where the detection device 1 is a device that detects human biological information will be described. In this case, the detection device 1 detects biological information such as pulse wave, pulse, oxygen saturation, etc., and is provided in vital devices such as a smartwatch, an activity tracker, a smart ring, a pulse oximeter, a smart earphone, etc. Note that the detection device 1 may be configured to be provided in a wireless mouse, a doorknob sensor, a sensor for an automobile steering wheel, etc. In the present disclosure, the case where the detection device 1 detects the biological information of the first user will be described. In this case, the detection device 1 is attached to a predetermined part of the first user. The part is, for example, the wrist, etc., but is not limited thereto. In the present disclosure, the part will be described as a target part. Note that the detection device 1 may be configured to detect the biological information of an animal other than a human, or may be configured to detect the biological information of a plant.

[0016] Specifically, the detection device 1 is pressed against the skin of the target part and emits light in a predetermined wavelength band toward the skin. Then, the detection device 1 receives the reflected light of the light emitted toward the skin, and detects the pulse, oxygen saturation, etc. based on the temporal change in the amount of received light of the received reflected light. Here, the substance that reflects the light emitted by the detection device 1 is, for example, hemoglobin in capillaries, etc., but is not limited thereto. Also, for example, when the detection device 1 detects a pulse, it uses light in the green wavelength band. The green wavelength band is 500 to 570 [nm]. Also, for example, when the detection device 1 detects oxygen saturation, it uses light in the red wavelength band, light in the infrared wavelength band, etc. The red wavelength band is 630 to 680 [nm], and the light in the infrared wavelength band is 850 to 1000 [nm].

[0017] The detection device 1 includes, for example, a base 11, an acceleration detection unit 12, a lid 13, a control unit 14, a biological information detection unit 15, and a housing unit 16. Note that the detection device 1 also includes other members such as a transmission path and connection terminals that electrically connect some or all of the base 11, the acceleration detection unit 12, the control unit 14, and the biological information detection unit 15 to each other. The transmission path is, for example, wire bonding, a conducting wire, etc., but is not limited thereto. However, in the present disclosure, descriptions of these other members are omitted. For this reason, in each figure, illustrations of these other members are also omitted.

[0018] In the detection device 1, a predetermined direction A1 with respect to the base 11 is treated as the upward direction. The direction A1 can be any direction. In the present disclosure, the case where the direction A1 coincides with the positive direction of the Z axis will be described. Therefore, in the present disclosure, the position in the direction A1 of a certain surface is described as the height of the surface. The direction A1 is an example of each of the first direction and the height direction.

[0019] The base 11 is, for example, a glass substrate. On the surface of the base 11, a semiconductor chip (not shown) or the like is fixed by a die attach material. Note that the base 11 may be, for example, a substrate using a phenolic resin, a polyimide resin, a fluororesin, or an epoxy resin. The base 11 has a surface orthogonal to the direction A1. In the present disclosure, as an example, as shown in FIGS. 1 and 2, the case where the base 11 is a rectangular flat plate-shaped substrate having an upper surface and a lower surface orthogonal to the direction A1 will be described. Also, in the present disclosure, as an example, as shown in FIGS. 1 and 2, the case where the longitudinal direction of the base 11 is parallel to the Y axis and the short-side direction of the base 11 is parallel to the X axis will be described. Also, in the example shown in FIGS. 1 and 2, a recess in which the acceleration detection unit 12 is provided is formed on the upper surface of the base 11. Note that the upper surface of the base 11 may be configured such that such a recess is not formed. In this case, the acceleration detection unit 12 is provided on the upper surface of the base 11.

[0020] The acceleration detection unit 12 is a sensor, device, etc. that detects the acceleration of the target site when the detection device 1 is attached to the target site. The acceleration detection unit 12 may be any sensor, device, etc. as long as it is a sensor capable of detecting acceleration. The acceleration detection unit 12 outputs information indicating the detected acceleration to the control unit 14. In the examples shown in FIGS. 1 and 2, the acceleration detection unit 12 is constituted by a silicon structure provided on the base 11. The structure of the acceleration detection unit 12 as a silicon structure may be a known structure or a structure to be developed in the future. For this reason, in this disclosure, a detailed description of the structure of the acceleration detection unit 12 is omitted.

[0021] The acceleration detection unit 12 is provided on the base 11. More specifically, the acceleration detection unit 12 is provided in a recess formed on the upper surface of the base 11. In the example shown in FIG. 1, the height of the acceleration detection unit 12 in the direction A1 is higher than the depth of the recess in the direction A1. For this reason, in this example, in FIG. 1, the upper surface of the acceleration detection unit 12 is located above the upper surface of the base 11.

[0022] The lid portion 13 is an opaque member that covers the acceleration detection unit 12 together with the base 11 on the base 11. For this reason, in the detection device 1, the incidence of light passing through the lid portion 13 to the acceleration detection unit 12 is suppressed. The lid portion 13 is, for example, a silicon cap. In the examples shown in FIGS. 1 and 2, a recess that covers the upper portion of the acceleration detection unit 12 is formed on the lower surface of the lid portion 13. Note that the lid portion 13 may be another member that is opaque and capable of covering the acceleration detection unit 12 together with the base 11 on the base 11 instead of the silicon cap. The other member is, for example, an opaque resin member, etc., but is not limited thereto.

[0023] The control unit 14 is an IC (Integrated Circuit) chip that controls the acceleration detection unit 12, the biological information detection unit 15, etc. The control unit 14 is provided on the lid portion 13. The control unit 14 detects the body movement of the first user based on, for example, the output of the acceleration detection unit 12 when the detection device 1 is attached to the target site. In the examples shown in FIGS. 1 and 2, the control unit 14 extends in a direction parallel to the X-axis. However, the control unit 14 may be configured to extend in a direction non-parallel to the X-axis.

[0024] The biological information detection unit 15 includes a light emitting unit 151 and a light receiving unit 152.

[0025] The light emitting unit 151 is a light emitting element, a light emitting device, etc. that emits light in a predetermined wavelength band. The light emitting unit 151 is controlled by the control unit 14. The light emitting unit 151 is, for example, an LED (Light Emitting Diode), but instead of this, other light emitting elements such as OLED (Organic Light Emitting Diode), μ (Micro) LED, VCSEL (Vertical Cavity Surface Emitting Laser), or other light emitting devices may be used. The light emitting unit 151 emits light toward the target site when the detection device 1 is attached to the target site. The wavelength band is, for example, the aforementioned green wavelength band, red wavelength band, infrared wavelength band, etc., but is not limited thereto. Note that the depth at which the light emitted from the light emitting unit 151 penetrates into the target site varies according to the wavelength band, intensity, etc. of the light emitted from the light emitting unit 151. That is, the detection device 1 can accurately detect desired biological information by adjusting at least one of the wavelength band, intensity, etc. of the light emitted from the light emitting unit 151.

[0026] In the examples shown in FIGS. 1 and 2, the light emitting unit 151 is provided on the base 11. Also, in this example, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13. Here, the upper surface of the light emitting unit 151 is the uppermost surface among the surfaces of the light emitting unit 151. Note that when the uppermost surface among the surfaces of the light emitting unit 151 does not coincide with the light emitting surface that emits light in the light emitting unit 151, the upper surface of the light emitting unit 151 means the light emitting surface. When the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13, in the detection device 1, the light emitted from the light emitting unit 151 does not travel in the direction toward the base 11 unless it is reflected. And, as described above, the lid unit 13 is an opaque member. Therefore, in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Note that the height of the upper surface of the light emitting unit 151 may be the same as the height of the bottom surface of the lid unit 13. Even in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. Also, the light emitting unit 151 may be configured to be provided on the base 11 via a member such as a spacer.

[0027] The light receiving unit 152 is a light receiving element, a light receiving device, or the like that receives light. The light receiving unit 152 receives at least a part of the light reflected inside the target site among the light emitted from the light emitting unit 151 when the detection device 1 is attached to the target site. The light receiving unit 152 outputs information indicating the amount of received light to the control unit 14 as information indicating the intensity of the received light.

[0028] Here, the aforementioned control unit 14 detects the biological information of the first user according to the intensity of the light received by the light receiving unit 152. In detecting such biological information, the control unit 14 corrects the biological information according to the body movement of the first user detected according to the output from the acceleration detection unit 12. Such correction of biological information means, but is not limited to, stopping the detection of biological information when the body movement of the first user is a predetermined type of body movement, removing noise estimated to occur when the body movement of the first user is a predetermined type of body movement from the biological information, and the like. Further, the stop of the detection of biological information when the body movement of the first user is a predetermined type of body movement is realized by methods such as stopping the acquisition of the information output from the light receiving unit 152 by the control unit 14 and stopping the light emission by the light emitting unit 151, but it may also be realized by other methods.

[0029] In the examples shown in FIGS. 1 and 2, the light receiving unit 152 is provided on the base 11 together with the light emitting unit 151. Also, in this example, the height of the upper surface of the light receiving unit 152 is the same as the height of the upper surface of the light emitting unit 151. Note that the height of the upper surface of the light receiving unit 152 may be different from the height of the upper surface of the light emitting unit 151. In FIG. 1, the light receiving unit 152 is hidden behind the light emitting unit 151 and not visible. Also, the light receiving unit 152 may be configured to be provided on the base 11 via a member such as a spacer. When the height of the upper surface of the light receiving unit 152 is different from the height of the upper surface of the light emitting unit 151, the detection device 1 can suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from directly entering the light receiving unit 152 and being received by the light receiving unit 152. For example, when the upper surface of the light emitting unit 151 is higher than the upper surface of the light receiving unit 152, most of the light emitted from the light emitting unit 151 travels upward without heading toward the light receiving unit 152. On the other hand, for example, when the upper surface of the light emitting unit 151 is lower than the upper surface of the light receiving unit 152, at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 is reflected on the side surface of the light receiving unit 152 and does not reach the light receiving element included in the light receiving unit 152. Therefore, in this case, the detection device 1 can suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from directly entering the light receiving unit 152 and being received by the light receiving unit 152. In the detection device 1, the difference in the height of the upper surfaces of the light emitting unit 151 and the light receiving unit 152, which are provided on the same member, may be caused by a spacer or the like, or may be caused by using light emitting unit 151 and light receiving unit 152 having different heights from each other.

[0030] Also, in the examples shown in FIGS. 1 and 2, the light receiving unit 152 is provided on the base 11 so as to be aligned with the light emitting unit 151 in the direction A2 that intersects the direction A1. In the present disclosure, as an example, the case where the direction A2 coincides with the positive direction of the X axis as shown in FIGS. 1 and 2 will be described. In this case, the above-described control unit 14 extends in the direction A2 in this example. The direction A2 is an example of each of the second direction and the alignment direction.

[0031] In the examples shown in FIGS. 1 and 2, the light-receiving unit 152 is provided on the base 11 so as to be aligned with the control unit 14 in the direction A3 that intersects each of the directions A1 and A2. In the present disclosure, as an example, as shown in FIGS. 1 and 2, the case where the direction A3 coincides with the positive direction of the Y-axis will be described. The direction A3 is an example of each of the third direction and the width direction.

[0032] Note that the biological information detection unit 15 may further have a processor (not shown) that detects the biological information of the first user based on the temporal change in the amount of light received by the light-receiving unit 152. When the biological information is detected, the processor outputs the detected biological information to the control unit 14. That is, in this case, the control unit 14 does not acquire the information output from the light-receiving unit 152, but acquires the biological information output from the processor. That is, in this case, the control unit 14 does not detect the biological information. Therefore, the processor is communicably connected to each of the light-receiving unit 152 and the control unit 14.

[0033] The housing unit 16 houses the base 11, the acceleration detection unit 12, the lid unit 13, the control unit 14, and the biological information detection unit 15. The housing unit 16 is, for example, a rectangular parallelepiped container as a whole. In this case, the housing unit 16 is composed of, for example, a first member 161 and a second member 162.

[0034] The first member 161 is a member that houses the base 11, the acceleration detection unit 12, the lid unit 13, the control unit 14, and the biological information detection unit 15, and in which a recess with an open upper part is formed. Among the side walls of the first member 161, the side wall on the positive X-axis side is a member that is omitted in FIG. 1 as a member that covers the front inside the detection device 1.

[0035] The second member 162 is made of glass and is a rectangular flat plate member that closes the concave portion of the first member 161 from above. The second member 162 is adhered to the first member 161 by an adhesive 163. The second member 162 may be configured to be assembled to the first member 161 without using the adhesive 163. Also, the second member 162 is a member that comes into contact with the skin of the target site when the detection device 1 is attached to the target site. Further, the second member 162 is a member that is omitted in FIG. 2 as a member that covers the upper surface inside the detection device 1. Also, in FIG. 2, the adhesive 163 is omitted together with the second member 162. Note that, for example, when the inside of the concave portion of the first member 161 is filled with a transparent resin, the housing portion 16 may be configured without the second member 162. That is, the housing portion 16 may be composed of the first member 161 and the resin.

[0036] As described above, the housing portion 16 composed of the first member 161 and the second member 162 houses the biological information detection unit 15 together with the acceleration detection unit 12. Therefore, in the detection device 1, it is possible to reduce the size as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing portions.

[0037] As described above, in the detection device 1 shown in FIGS. 1 and 2, the height of the upper surface of the light emitting unit 151 is equal to or higher than the height of the bottom surface of the lid unit 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Also, in the detection device 1 shown in FIGS. 1 and 2, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing portion 16. Thereby, the detection device 1 can be reduced in size as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing portions. That is, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light while reducing the size.

[0038] In the first embodiment, the height of the upper surface of the light emitting unit 151 and the height of the upper surface of the light receiving unit 152 are both lower than the height of the upper surface of the control unit 14. In this case, the detection device 1 can reduce the thickness in the direction A1, and as a result, can be miniaturized as a whole. In order to obtain such an effect, the height of the upper surface of the light emitting unit 151 and the height of the upper surface of the light receiving unit 152 may both be the same as the height of the upper surface of the control unit 14. In the detection device 1, when such an effect does not have to be obtained, at least one of the height of the upper surface of the light emitting unit 151 and the height of the upper surface of the light receiving unit 152 may be higher than the height of the upper surface of the control unit 14.

[0039] <First Modification Example of the First Embodiment> In the first modification example of the first embodiment, both the light emitting unit 151 and the light receiving unit 152 are provided on the lid portion 13. FIG. 3 is a front view showing a first modification example of the configuration of the detection device 1. FIG. 4 is a top view of the detection device 1 shown in FIG. 3. In FIG. 3, in order to clearly show the internal configuration of the detection device 1, a member covering the front inside of the detection device 1 is omitted. Also, in FIG. 4, in order to clearly show the internal configuration of the detection device 1, a member covering the upper surface inside of the detection device 1 is omitted.

[0040] In the example shown in FIGS. 3 and 4, the light emitting unit 151 is provided on the lid portion 13. Therefore, also in this example, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13. Therefore, also in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Note that the light emitting unit 151 may be configured to be provided on the lid portion 13 via a member such as a spacer.

[0041] Also, in the examples shown in FIGS. 3 and 4, the light receiving unit 152 is provided on the lid portion 13 together with the light emitting unit 151. Also, in this example as well, the height of the upper surface of the light receiving unit 152 is the same as the height of the upper surface of the light emitting unit 151. Note that the height of the upper surface of the light receiving unit 152 may be different from the height of the upper surface of the light emitting unit 151. In FIG. 3, the light receiving unit 152 is hidden behind the light emitting unit 151 and cannot be seen. Note that the light receiving unit 152 may be configured to be provided on the lid portion 13 via a member such as a spacer.

[0042] Also, in the examples shown in FIGS. 3 and 4, the light receiving unit 152 is provided on the lid portion 13 so as to be aligned with the light emitting unit 151 in the direction A2.

[0043] Also, in the examples shown in FIGS. 3 and 4, the light receiving unit 152 is provided on the lid portion 13 so as to be aligned with the control unit 14 in the direction A3.

[0044] As described above, also in the detection device 1 shown in FIGS. 3 and 4, the height of the upper surface of the light emitting unit 151 is equal to or greater than the height of the bottom surface of the lid portion 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Also, in the detection device 1 shown in FIGS. 3 and 4, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 1 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light while being miniaturized.

[0045] In addition, also in the first modification example of the first embodiment, the height of the upper surface of the light emitting unit 151 and the height of the upper surface of the light receiving unit 152 are both lower than the height of the upper surface of the control unit 14. In this case, the detection device 1 can reduce the thickness in the direction A1, and as a result, can be miniaturized as a whole. In order to obtain such an effect, the height of the upper surface of the light emitting unit 151 and the height of the upper surface of the light receiving unit 152 may both be the same as the height of the upper surface of the control unit 14. In the detection device 1, when such an effect does not have to be obtained, at least one of the height of the upper surface of the light emitting unit 151 and the height of the upper surface of the light receiving unit 152 may be higher than the height of the upper surface of the control unit 14.

[0046] <Second Modification Example of the First Embodiment> In the second modification example of the first embodiment, both the light emitting unit 151 and the light receiving unit 152 are provided on the control unit 14. FIG. 5 is a front view showing a second modification example of the configuration of the detection device 1. FIG. 6 is a top view of the detection device 1 shown in FIG. 5. In FIG. 5, in order to clearly show the internal configuration of the detection device 1, a member covering the front inside of the detection device 1 is omitted. Also, in FIG. 6, in order to clearly show the internal configuration of the detection device 1, a member covering the upper surface inside the detection device 1 is omitted.

[0047] In the example shown in FIGS. 5 and 6, the light emitting unit 151 is provided on the control unit 14. Therefore, also in this example, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13. Therefore, also in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Note that the light emitting unit 151 may be configured to be provided on the control unit 14 via a member such as a spacer.

[0048] Also, in the examples shown in FIGS. 5 and 6, the light receiving unit 152 is provided on the control unit 14 together with the light emitting unit 151. Also, in this example as well, the height of the upper surface of the light receiving unit 152 is the same as the height of the upper surface of the light emitting unit 151. Note that the height of the upper surface of the light receiving unit 152 may be different from the height of the upper surface of the light emitting unit 151. In FIG. 5, the light receiving unit 152 is hidden behind the light emitting unit 151 and not visible. Note that the light receiving unit 152 may be configured to be provided on the control unit 14 via a member such as a spacer.

[0049] Also, in the examples shown in FIGS. 5 and 6, the light receiving unit 152 is provided on the lid unit 13 so as to be aligned with the light emitting unit 151 in the direction A2.

[0050] As described above, also in the detection device 1 shown in FIGS. 5 and 6, the height of the upper surface of the light emitting unit 151 is equal to or greater than the height of the bottom surface of the lid unit 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Also, in the detection device 1 shown in FIGS. 5 and 6, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 1 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light while being miniaturized.

[0051] <Third Modification of the First Embodiment> In the third modification of the first embodiment, the size of the light emitting unit 151 is different from the size of the light receiving unit 152. FIG. 7 is a front view showing a third modification of the configuration of the detection device 1. FIG. 8 is a top view of the detection device 1 shown in FIG. 7. In FIG. 7, in order to clearly show the internal configuration of the detection device 1, the member covering the front inside of the detection device 1 is omitted. Also, in FIG. 8, in order to clearly show the internal configuration of the detection device 1, the member covering the top inside of the detection device 1 is omitted.

[0052] In the examples shown in FIGS. 7 and 8, the light emitting unit 151 and the light receiving unit 152 are both provided on the base 11, similar to the examples shown in FIGS. 1 and 2. However, different from the first embodiment, in FIG. 7, a part of the light receiving unit 152 located behind the light emitting unit 151 is visible. This is because when viewed in the direction A2, the size of the light receiving unit 152 is larger than the size of the light emitting unit 151. Also, in FIG. 8, it can be seen that when viewed in the direction opposite to the direction A1, the size of the light receiving unit 152 is also larger than the size of the light emitting unit 151. Note that the size relationship between the light emitting unit 151 and the light receiving unit 152 may be reversed.

[0053] Here, also in the examples shown in FIGS. 7 and 8, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13. Therefore, also in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. That is, if the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light regardless of the size relationship between the light emitting unit 151 and the light receiving unit 152. Note that in the examples shown in FIGS. 7 and 8, both the light emitting unit 151 and the light receiving unit 152 may be provided on the lid portion 13 instead of on the base 11, or may be provided on the control unit 14.

[0054] As described above, also in the detection device 1 shown in FIGS. 7 and 8, the height of the upper surface of the light emitting unit 151 is higher than or equal to the height of the bottom surface of the lid portion 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Also, in the detection device 1 shown in FIGS. 7 and 8, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing portion 16. Thereby, the detection device 1 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing portions. That is, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light while being miniaturized.

[0055] <Fourth Modification of the First Embodiment> In the fourth modification of the first embodiment, the light emitting unit 151 is aligned with the light receiving unit 152 in the direction A3. FIG. 9 is a front view showing a fourth modification of the configuration of the detection device 1. FIG. 10 is a top view of the detection device 1 shown in FIG. 9. In FIG. 9, in order to clearly show the internal configuration of the detection device 1, the member covering the front of the inside of the detection device 1 is omitted. Also, in FIG. 10, in order to clearly show the internal configuration of the detection device 1, the member covering the top of the inside of the detection device 1 is omitted.

[0056] In the example shown in FIGS. 9 and 10, the light emitting unit 151 and the light receiving unit 152 are both provided on the base 11, similar to the example shown in FIGS. 1 and 2. However, unlike the first embodiment, in FIGS. 9 and 10, the light emitting unit 151 is not aligned with the light receiving unit 152 in the direction A2, but is aligned with the light receiving unit 152 in the direction A3. Therefore, when viewed in the direction A2, in the detection device 1, in the direction A3, the light receiving unit 152, the light emitting unit 151, and the control unit 14 are arranged in this order, with the light emitting unit 151, the light receiving unit 152, and the control unit 14 aligned.

[0057] Note that the light emitting unit 151 may be configured to be aligned with the light receiving unit 152 in a direction different from each of the directions A2 and A3 on the base 11.

[0058] Also, the light emitting unit 151 and the light receiving unit 152 may both be provided on the lid portion 13 and be aligned in the direction A2. Further, the light emitting unit 151 and the light receiving unit 152 may both be provided on the lid portion 13 and be aligned in a direction different from each of the directions A2 and A3 on the lid portion 13.

[0059] Also, the light emitting unit 151 and the light receiving unit 152 may both be provided on the control unit 14 and be aligned in the direction A2. Further, the light emitting unit 151 and the light receiving unit 152 may both be provided on the control unit 14 and be aligned in a direction different from each of the directions A2 and A3 on the control unit 14.

[0060] Here, also in the examples shown in FIGS. 9 and 10, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13. Therefore, also in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. That is, if the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light, regardless of the direction in which the light emitting unit 151 and the light receiving unit 152 are aligned on any one of the base unit 11, the lid unit 13, and the control unit 14.

[0061] As described above, also in the detection device 1 shown in FIGS. 9 and 10, the height of the upper surface of the light emitting unit 151 is equal to or higher than the height of the bottom surface of the lid unit 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Further, also in the detection device 1 shown in FIGS. 9 and 10, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 1 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light while being miniaturized.

[0062] <Fifth Modification of the First Embodiment> In the fifth modification of the first embodiment, both the light emitting unit 151 and the light receiving unit 152 are provided on the base unit 11, the light emitting unit 151 is aligned with each of the light receiving unit 152 and the control unit 14 in the direction A3, and the control unit 14 is located between the light emitting unit 151 and the light receiving unit 152 in the direction A3. FIG. 11 is a front view showing a fifth modification of the configuration of the detection device 1. FIG. 12 is a top view of the detection device 1 shown in FIG. 11. In FIG. 11, in order to clearly show the internal configuration of the detection device 1, the member covering the front inside of the detection device 1 is omitted. Also, in FIG. 12, in order to clearly show the internal configuration of the detection device 1, the member covering the upper surface inside of the detection device 1 is omitted.

[0063] In the examples shown in FIGS. 11 and 12, like the examples shown in FIGS. 1 and 2, both the light emitting unit 151 and the light receiving unit 152 are provided on the base 11. However, different from the first embodiment, in FIGS. 11 and 12, the light emitting unit 151 is not aligned with the light receiving unit 152 in the direction A2, and in the direction A3, the light emitting unit 151, the control unit 14, and the light receiving unit 152 are aligned in this order, side by side with the control unit 14 and the light receiving unit 152. That is, in this example, the control unit 14 is located between the light emitting unit 151 and the light receiving unit 152 in the direction A3.

[0064] Here, also in the examples shown in FIGS. 11 and 12, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13. Therefore, also in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. That is, if the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13, even if the light emitting unit 151 and the light receiving unit 152 are arranged so as to sandwich the control unit 14 on the base 11, the heating of the acceleration detection unit 12 due to the incidence of light can be suppressed.

[0065] Further, when attempting to reduce the size of the detection device 1, it is desirable to arrange the biological information detection unit 15 and the acceleration detection unit 12 in the same housing unit 16 as each other like the detection device 1, and to bring the light emitting unit 151 and the light receiving unit 152 closer to each other. However, if the light emitting unit 151 and the light receiving unit 152 are brought closer to each other in the housing unit 16 in which both the biological information detection unit 15 and the acceleration detection unit 12 are arranged, a part of the light emitted from the light emitting unit 151 is likely to be received by the light receiving unit 152 as stray light without passing through the inside of the target site. This leads to a decrease in the detection accuracy of the biological information by the detection device 1, which is not desirable. Note that the method of solving this problem by arranging a light shielding member between the light emitting unit 151 and the light receiving unit 152 may impede the miniaturization of the detection device 1 and often cannot be adopted.

[0066] However, such a problem is solved in the detection device 1 by providing the light emitting unit 151 and the light receiving unit 152 on the base 11 so as to sandwich the control unit 14 as shown in the detection devices 1 of FIGS. 11 and 12. This is because, in the examples shown in FIGS. 11 and 12, the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 is reflected by the lid portion 13 and the control unit 14, making it difficult for the light to be received by the light receiving unit 152 as stray light. That is, the detection device 1 is provided with the control unit 14 between the light emitting unit 151 and the light receiving unit 152 in the direction in which the light emitting unit 151 and the light receiving unit 152 are arranged within the housing unit 16, thereby reducing the amount of stray light incident on the light receiving unit 152 while miniaturizing. Also, since the detection device 1 can reduce the amount of stray light incident on the light receiving unit 152 in this way, there is no need to provide a light shielding member that blocks light so that stray light does not enter the light receiving unit 152. As a result, the detection device 1 can be miniaturized more reliably.

[0067] As described above, also in the detection device 1 shown in FIGS. 11 and 12, the height of the upper surface of the light emitting unit 151 is equal to or higher than the height of the bottom surface of the lid portion 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Also, in the detection device 1 shown in FIGS. 11 and 12, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 1 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light while miniaturizing. Further, in the detection device 1 shown in FIGS. 11 and 12, the control unit 14 is provided between the light emitting unit 151 and the light receiving unit 152 in the direction in which the light emitting unit 151 and the light receiving unit 152 are arranged. Thereby, the detection device 1 can reduce the amount of stray light incident on the light receiving unit 152 while miniaturizing.

[0068] <Sixth Modification of the First Embodiment> In the sixth modification of the first embodiment, both the light emitting unit 151 and the light receiving unit 152 are provided on the lid portion 13. The light emitting unit 151 is aligned with the light receiving unit 152 and the control unit 14 in the direction A3, and the control unit 14 is positioned between the light emitting unit 151 and the light receiving unit 152 in the direction A3. FIG. 13 is a front view showing the sixth modification of the configuration of the detection device 1. FIG. 14 is a top view of the detection device 1 shown in FIG. 13. In FIG. 13, a member covering the front inside of the detection device 1 is omitted to clearly show the internal configuration of the detection device 1. Also, in FIG. 14, a member covering the top inside of the detection device 1 is omitted to clearly show the internal configuration of the detection device 1.

[0069] In the examples shown in FIGS. 11 and 12, the light emitting unit 151 and the light receiving unit 152 are both provided on the lid portion 13, similar to the examples shown in FIGS. 3 and 4. However, different from the first modification of the first embodiment, in FIGS. 13 and 14, the light emitting unit 151 is not aligned with the light receiving unit 152 in the direction A2, and in the direction A3, the light emitting unit 151, the control unit 14, and the light receiving unit 152 are aligned in this order with the control unit 14 and the light receiving unit 152. That is, in this example, the control unit 14 is positioned between the light emitting unit 151 and the light receiving unit 152 in the direction A3.

[0070] Here, also in the examples shown in FIGS. 13 and 14, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13. Therefore, also in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. That is, if the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light even if the light emitting unit 151 and the light receiving unit 152 are aligned so as to sandwich the control unit 14 on the base portion 11.

[0071] Also, in the examples shown in FIGS. 13 and 14, the light emitting unit 151 and the light receiving unit 152 are provided on the lid portion 13 so as to sandwich the control unit 14. Thereby, in this example, the light among the light emitted from the light emitting unit 151 that travels toward the light receiving unit 152 is reflected by the control unit 14, making it difficult for the light to be received by the light receiving unit 152 as stray light. That is, the detection device 1 is provided between the light emitting unit 151 and the light receiving unit 152 in the direction in which the light emitting unit 151 and the light receiving unit 152 are arranged within the housing unit 16, so that while miniaturizing, the amount of stray light incident on the light receiving unit 152 can be reduced. Further, since the detection device 1 can reduce the amount of stray light incident on the light receiving unit 152 in this way, there is no need to provide a light shielding member that blocks light so that stray light does not enter the light receiving unit 152. As a result, the detection device 1 can be miniaturized more reliably.

[0072] As described above, also in the detection device 1 shown in FIGS. 13 and 14, the height of the upper surface of the light emitting unit 151 is equal to or greater than the height of the bottom surface of the lid portion 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Also, in the detection device 1 shown in FIGS. 13 and 14, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 1 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light while miniaturizing. Further, also in the detection device 1 shown in FIGS. 13 and 14, the control unit 14 is provided between the light emitting unit 151 and the light receiving unit 152 in the direction in which the light emitting unit 151 and the light receiving unit 152 are arranged. Thereby, the detection device 1 can reduce the amount of stray light incident on the light receiving unit 152 while miniaturizing.

[0073] <The 7th Modification of the First Embodiment> In the seventh modification of the first embodiment, both the light emitting unit 151 and the light receiving unit 152 are provided on the base 11. The light emitting unit 151 is aligned with the control unit 14 in the direction A3, and the light receiving unit 152 is aligned with the control unit 14 in the direction A2. FIG. 15 is a front view showing a seventh modification of the configuration of the detection device 1. FIG. 16 is a top view of the detection device 1 shown in FIG. 15. In FIG. 15, for the sake of clearly showing the internal configuration of the detection device 1, the member covering the front inside of the detection device 1 is omitted. Also, in FIG. 16, for the sake of clearly showing the internal configuration of the detection device 1, the member covering the top inside of the detection device 1 is omitted.

[0074] In the examples shown in FIGS. 15 and 16, both the light emitting unit 151 and the light receiving unit 152 are provided on the base 11, similar to the examples shown in FIGS. 1 and 2. However, different from the first embodiment, in FIGS. 15 and 16, the light emitting unit 151 is not aligned with the light receiving unit 152 in the direction A2, but is aligned with the control unit 14 in the direction A3. Also, in FIGS. 15 and 16, the light receiving unit 152 is aligned with the control unit 14 in the direction A2.

[0075] Here, also in the examples shown in FIGS. 15 and 16, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13. Therefore, also in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. That is, if the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light even if the light emitting unit 151 is aligned with the control unit 14 in the direction A3 and the light receiving unit 152 is aligned with the control unit 14 in the direction A2.

[0076] Also, in the examples shown in FIGS. 15 and 16, when viewed in the direction A2, the light emitting part 151 does not overlap with both the lid part 13 and the light receiving part 152. On the other hand, in this example, when viewed in the direction A2, the light receiving part 152 overlaps with the lid part 13. Also, in this example, when viewed in the direction A1, the light emitting part 151 overlaps with the lid part 13 and does not overlap with the light receiving part 152. For this reason, at least a part of the light emitted from the light emitting part 151 and directed toward the light receiving part 152 is reflected by the lid part 13, making it difficult for the light receiving part 152 to receive the light as stray light. That is, in the detection device 1, the biological information detection part 15 and the acceleration detection part 12 are provided in the housing part 16, the light emitting part 151 is aligned with the control part 14 in the direction A3, and the light receiving part 152 is aligned with the control part 14 in the direction A2. As a result, while miniaturizing, the amount of stray light incident on the light receiving part 152 can be reduced. Note that such an effect becomes greater as the distance between the light emitting part 151 and the light receiving part 152 increases. Therefore, in this example, it is more desirable that the light emitting part 151 and the light receiving part 152 are farther apart.

[0077] As described above, also in the detection device 1 shown in FIGS. 15 and 16, the height of the upper surface of the light emitting part 151 is equal to or higher than the height of the bottom surface of the lid part 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting part 151 to the acceleration detection part 12. As a result, the detection device 1 can suppress the heating of the acceleration detection part 12 due to the incidence of light. Also, in the detection device 1 shown in FIGS. 15 and 16, the acceleration detection part 12 and the biological information detection part 15 are housed in the housing part 16. Thereby, the detection device 1 can be miniaturized as compared with the case where the biological information detection part 15 and the acceleration detection part 12 are housed in separate housing parts. That is, the detection device 1 can suppress the heating of the acceleration detection part 12 due to the incidence of light while miniaturizing. Further, in the detection device 1 shown in FIGS. 15 and 16, at least a part of the light emitted from the light emitting part 151 and directed toward the light receiving part 152 is reflected by the lid part 13, making it difficult for the light receiving part 152 to receive the light as stray light. Thereby, the detection device 1 can reduce the amount of stray light incident on the light receiving part 152 while miniaturizing.

[0078] <Eighth Modification of the First Embodiment> In the eighth modification of the first embodiment, both the light emitting unit 151 and the light receiving unit 152 are provided on the lid portion 13. The light emitting unit 151 is aligned with the control unit 14 in the direction A3, and the light receiving unit 152 is aligned with the control unit 14 in the direction A2. FIG. 17 is a front view showing the eighth modification of the configuration of the detection device 1. FIG. 18 is a top view of the detection device 1 shown in FIG. 17. In FIG. 17, for the sake of clearly showing the internal configuration of the detection device 1, the member covering the front inside of the detection device 1 is omitted. Also, in FIG. 18, for the sake of clearly showing the internal configuration of the detection device 1, the member covering the top inside of the detection device 1 is omitted.

[0079] In the examples shown in FIGS. 17 and 18, both the light emitting unit 151 and the light receiving unit 152 are provided on the lid portion 13, similar to the examples shown in FIGS. 3 and 4. However, different from the first modification of the first embodiment, in FIGS. 17 and 18, the light emitting unit 151 is not aligned with the light receiving unit 152 in the direction A2, but is aligned with the control unit 14 in the direction A3. Also, in FIGS. 17 and 18, the light receiving unit 152 is aligned with the control unit 14 in the direction A2.

[0080] Here, also in the examples shown in FIGS. 17 and 18, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13. Therefore, also in this case, in the detection device 1, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. That is, if the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid portion 13, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light even if the light emitting unit 151 is aligned with the control unit 14 in the direction A3 and the light receiving unit 152 is aligned with the control unit 14 in the direction A2.

[0081] Also, in the examples shown in FIGS. 17 and 18, when viewed in the direction A2, the light emitting unit 151 does not overlap with both the control unit 14 and the light receiving unit 152. On the other hand, in this example, when viewed in the direction A2, the light receiving unit 152 overlaps with the control unit 14. Also, in this example, when viewed in the direction A1, the light emitting unit 151 overlaps with the control unit 14 and does not overlap with the light receiving unit 152. For this reason, at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 is reflected by the control unit 14, making it difficult for the light receiving unit 152 to receive it as stray light. That is, in the detection device 1, the biological information detection unit 15 and the acceleration detection unit 12 are provided in the housing unit 16, and the light emitting unit 151 is aligned with the control unit 14 in the direction A3, and the light receiving unit 152 is aligned with the control unit 14 in the direction A2, so that while miniaturizing, the amount of stray light incident on the light receiving unit 152 can be reduced.

[0082] As described above, also in the detection device 1 shown in FIGS. 17 and 18, the height of the upper surface of the light emitting unit 151 is equal to or higher than the height of the bottom surface of the lid unit 13. Thereby, the detection device 1 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Also, in the detection device 1 shown in FIGS. 17 and 18, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 1 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 1 can suppress the heating of the acceleration detection unit 12 due to the incidence of light while miniaturizing. Further, in the detection device 1 shown in FIGS. 17 and 18, at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 is reflected by the control unit 14, making it difficult for the light receiving unit 152 to receive it as stray light. Thereby, the detection device 1 can reduce the amount of stray light incident on the light receiving unit 152 while miniaturizing.

[0083] In addition, in each of the first embodiment, the first to eighth modification examples of the first embodiment described above, the positional relationship between the light emitting unit 151 and the light receiving unit 152 may be reversed. Further, in each of the first embodiment, the first to eighth modification examples of the first embodiment described above, the respective shapes of the light emitting unit 151 and the light receiving unit 152 may be any shape, may be different from each other, or may be the same as each other. Further, each of the first embodiment, the first to eighth modification examples of the first embodiment described above may be combined with each other in any manner.

[0084] <Second Embodiment> Hereinafter, the second embodiment will be described with reference to the drawings.

[0085] <Outline of the Detection Device According to the Second Embodiment> First, the outline of the detection device according to the second embodiment will be described.

[0086] The detection device according to the second embodiment is attached to a predetermined part of the subject. In the detection device, a predetermined first direction is treated as the upward direction. Further, the detection device includes a base portion, an acceleration detection portion, a lid portion, a control portion, a light emitting portion, a light receiving portion, and a housing portion. The base portion has a surface orthogonal to the first direction. The acceleration detection portion is provided on the base portion. The lid portion covers the acceleration detection portion together with the base portion on the base portion. The control portion is provided on the lid portion and detects the body movement of the subject based on the output of the acceleration detection portion when the detection device is attached to the part. The light emitting portion emits light. The light receiving portion receives light. The housing portion houses the base portion, the acceleration detection portion, the lid portion, the control portion, the light emitting portion, and the light receiving portion. And, the height of the upper surface of the light emitting portion in the first direction is different from the height of the upper surface of the light receiving portion in the first direction. Further, the light emitting portion and the light receiving portion are provided on different members. Thereby, the detection device can suppress at least a part of the light emitted from the light emitting portion and directed toward the light receiving portion from directly entering the light receiving portion and being received by the light receiving portion.

[0087] Hereinafter, the configuration of the detection device according to the second embodiment will be described in detail. In the second embodiment, the same reference numerals are given to the same components as in the first embodiment, and the description thereof will be omitted.

[0088] <Configuration of the Detection Device According to the Second Embodiment> Hereinafter, the configuration of the detection device according to the second embodiment will be described by taking the detection device 2 as an example. In the second embodiment, for the sake of convenience of explanation, when the detection device 2 is viewed in a certain direction, it will be described as "when viewed from the said direction".

[0089] The detection device 2 has the same configuration as the detection device 1, except that the light emitting unit 151 and the light receiving unit 152 are provided on different members. FIG. 19 is a front view showing an example of the configuration of the detection device 2. FIG. 20 is a top view of the detection device 2 shown in FIG. 19. In FIG. 19, in order to clearly show the internal configuration of the detection device 2, the member covering the front inside of the detection device 2 is omitted. Also, in FIG. 20, in order to clearly show the internal configuration of the detection device 2, the member covering the top inside of the detection device 2 is omitted.

[0090] In the example shown in FIGS. 19 and 20, the light emitting unit 151 is provided on the base 11. On the other hand, in this example, the light receiving unit 152 is provided on the lid 13. For this reason, in this example, the height of the upper surface of the light receiving unit 152 is higher than the height of the upper surface of the light emitting unit 151. As a result, in the detection device 2, at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 is reflected on each of the side surface of the lid 13 and the side surface of the light receiving unit 152, and does not reach the light receiving element of the light receiving unit 152. Thereby, the detection device 2 can suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from directly entering the light receiving unit 152 and being received by the light receiving unit 152.

[0091] Also, in the examples shown in FIGS. 19 and 20, the positional relationship between the light emitting unit 151 and the light receiving unit 152 may be reversed. In this case, the height of the upper surface of the light emitting unit 151 is higher than the height of the upper surface of the light receiving unit 152. As a result, in the detection device 2, most of the light emitted from the light emitting unit 151 travels upward without heading toward the light receiving unit 152. Also by this, the detection device 2 can suppress at least a part of the light traveling toward the light receiving unit 152 among the light emitted from the light emitting unit 151 from directly entering the light receiving unit 152 and being received by the light receiving unit 152.

[0092] Here, in the examples shown in FIGS. 19 and 20, the light emitting unit 151, the light receiving unit 152, and the control unit 14 are arranged in this order of the light emitting unit 151, the light receiving unit 152, and the control unit 14 in the direction A3. However, in the detection device 2, the effect of being able to suppress at least a part of the light traveling toward the light receiving unit 152 among the light emitted from the light emitting unit 151 from being received by the light receiving unit 152 is obtained by the height of the upper surface of the light receiving unit 152 being different from the height of the upper surface of the light emitting unit 151 regardless of the arrangement order in the direction A3 of the light emitting unit 151, the light receiving unit 152, and the control unit 14.

[0093] Note that the light emitting unit 151 may be configured to be provided on the base 11 via a spacer or the like. Also, the light receiving unit 152 may be configured to be provided on the lid 13 via a spacer or the like.

[0094] Also in the examples shown in FIGS. 19 and 20, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid 13. Therefore, also in this case, the detection device 2 can reduce the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12. As a result, the detection device 2 can suppress heating of the acceleration detection unit 12 due to the incidence of light.

[0095] Also, in the examples shown in FIGS. 19 and 20, the biological information detection unit 15 is housed in the housing unit 16 together with the acceleration detection unit 12. For this reason, the detection device 2 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units.

[0096] Also, in the examples shown in FIGS. 19 and 20, the height of the upper surface of the light emitting portion 151 and the height of the upper surface of the light receiving portion 152 are both lower than the height of the upper surface of the control portion 14. In this case, the detection device 2 can reduce the thickness in the direction A1, and as a result, can be miniaturized as a whole. In order to obtain such an effect, the height of the upper surface of the light emitting portion 151 and the height of the upper surface of the light receiving portion 152 may both be the same as the height of the upper surface of the control portion 14.

[0097] As described above, in the detection device 2 shown in FIGS. 19 and 20, the height of the upper surface of the light emitting portion 151 is different from the height of the upper surface of the light receiving portion 152. Thereby, the detection device 2 can suppress at least a part of the light emitted from the light emitting portion 151 and directed toward the light receiving portion 152 from being received by the light receiving portion 152. Also, in the detection device 2 shown in FIGS. 19 and 20, the acceleration detection portion 12 and the biological information detection portion 15 are housed in the housing portion 16. Thereby, the detection device 2 can be miniaturized as compared with the case where the biological information detection portion 15 and the acceleration detection portion 12 are housed in separate housing portions. That is, the detection device 2 can reduce the amount of stray light incident on the light receiving portion 152 while being miniaturized.

[0098] <First Modification Example of the Second Embodiment> In the first modification example of the second embodiment, the light emitting portion 151 is provided on the base portion 11, while the light receiving portion 152 is provided on the control portion 14. FIG. 21 is a front view showing a first modification example of the configuration of the detection device 2. FIG. 22 is a top view of the detection device 2 shown in FIG. 21. In FIG. 21, in order to clearly show the internal configuration of the detection device 2, the member covering the front of the inside of the detection device 2 is omitted. Also, in FIG. 22, in order to clearly show the internal configuration of the detection device 2, the member covering the top of the inside of the detection device 2 is omitted.

[0099] In the examples shown in FIGS. 21 and 22, the light emitting unit 151 is provided on the base 11, similar to the second embodiment. On the other hand, in this example, the light receiving unit 152 is provided on the control unit 14. Therefore, also in this example, the height of the upper surface of the light receiving unit 152 is higher than the height of the upper surface of the light emitting unit 151. As a result, in the detection device 2, at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 is reflected at each of the side surface of the lid portion 13, the side surface of the control unit 14, and the side surface of the light receiving unit 152, and does not reach the light receiving element included in the light receiving unit 152. Thereby, the detection device 2 can suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from being directly incident on the light receiving unit 152 and being received by the light receiving unit 152.

[0100] Also, in the examples shown in FIGS. 21 and 22, the positional relationship between the light emitting unit 151 and the light receiving unit 152 may be reversed. In this case, the height of the upper surface of the light emitting unit 151 is higher than the height of the upper surface of the light receiving unit 152. As a result, in the detection device 2, most of the light emitted from the light emitting unit 151 travels upward without heading toward the light receiving unit 152. Also by this, the detection device 2 can suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from being received by the light receiving unit 152.

[0101] Here, also in the examples shown in FIGS. 21 and 22, the light emitting unit 151, the light receiving unit 152, and the control unit 14 are arranged in this order of the light emitting unit 151, the light receiving unit 152, and the control unit 14 in the direction A3. However, the effect that the detection device 2 can suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from being received by the light receiving unit 152 is obtained by the height of the upper surface of the light receiving unit 152 being different from the height of the upper surface of the light emitting unit 151 regardless of the order of arrangement of the light emitting unit 151, the light receiving unit 152, and the control unit 14 in the direction A3.

[0102] Note that the light emitting unit 151 may be configured to be provided on the base 11 via a spacer or the like. Also, the light receiving unit 152 may be configured to be provided on the control unit 14 via a spacer or the like.

[0103] Also in the examples shown in FIGS. 21 and 22, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13. Therefore, also in this case, in the detection device 2, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. As a result, the detection device 2 can suppress the heating of the acceleration detection unit 12 due to the incidence of light.

[0104] Also in the examples shown in FIGS. 21 and 22, the biological information detection unit 15 is housed in the housing unit 16 together with the acceleration detection unit 12. For this reason, the detection device 2 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units.

[0105] As described above, also in the detection device 2 shown in FIGS. 21 and 22, the height of the upper surface of the light emitting unit 151 is different from the height of the upper surface of the light receiving unit 152. Thereby, the detection device 2 can suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from being received by the light receiving unit 152. Also, in the detection device 2 shown in FIGS. 21 and 22, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 2 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 2 can reduce the amount of stray light incident on the light receiving unit 152 while being miniaturized.

[0106] <Second Modification of the Second Embodiment> In the second modification of the second embodiment, while the light emitting unit 151 is provided on the lid portion 13, the light receiving unit 152 is provided on the control unit 14. FIG. 23 is a front view showing a second modification of the configuration of the detection device 2. FIG. 24 is a top view of the detection device 2 shown in FIG. 23. In FIG. 23, in order to clearly show the internal configuration of the detection device 2, a member covering the front inside of the detection device 2 is omitted. Also, in FIG. 24, in order to clearly show the internal configuration of the detection device 2, a member covering the top inside of the detection device 2 is omitted.

[0107] In the example shown in FIGS. 23 and 24, the light emitting unit 151 is provided on the lid portion 13. On the other hand, in this example, the light receiving unit 152 is provided on the control unit 14 as in the second embodiment. Therefore, also in this example, the height of the upper surface of the light receiving unit 152 is higher than the height of the upper surface of the light emitting unit 151. As a result, in the detection device 2, at least a part of the light emitted from the light emitting unit 151 that travels toward the light receiving unit 152 is reflected at each of the side surface of the lid portion 13, the side surface of the control unit 14, and the side surface of the light receiving unit 152, and does not reach the light receiving element included in the light receiving unit 152. Thereby, the detection device 2 can suppress at least a part of the light emitted from the light emitting unit 151 that travels toward the light receiving unit 152 from directly entering the light receiving unit 152 and being received by the light receiving unit 152.

[0108] Also, in the example shown in FIGS. 23 and 24, the positional relationship between the light emitting unit 151 and the light receiving unit 152 may be reversed. In this case, the height of the upper surface of the light emitting unit 151 is higher than the height of the upper surface of the light receiving unit 152. As a result, in the detection device 2, most of the light emitted from the light emitting unit 151 travels upward without going toward the light receiving unit 152. Also by this, the detection device 2 can suppress at least a part of the light emitted from the light emitting unit 151 that travels toward the light receiving unit 152 from directly entering the light receiving unit 152 and being received by the light receiving unit 152.

[0109] Here, also in the examples shown in FIGS. 23 and 24, the light emitting unit 151 and the light receiving unit 152 are arranged in the order of the light emitting unit 151 and the light receiving unit 152 in the direction A3. However, in the detection device 2, the effect that at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 can be suppressed from directly entering the light receiving unit 152 and being received by the light receiving unit 152 is obtained regardless of the arrangement order of the light emitting unit 151 and the light receiving unit 152 in the direction A3, because the height of the upper surface of the light receiving unit 152 is different from the height of the upper surface of the light emitting unit 151.

[0110] Note that the light emitting unit 151 may be configured to be provided on the base 11 via a spacer or the like. Further, the light receiving unit 152 may be configured to be provided on the control unit 14 via a spacer or the like.

[0111] Also in the examples shown in FIGS. 23 and 24, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13. Therefore, also in this case, in the detection device 2, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. As a result, the detection device 2 can suppress the heating of the acceleration detection unit 12 due to the incidence of light.

[0112] Also, in the examples shown in FIGS. 23 and 24, the biological information detection unit 15 is housed in the housing unit 16 together with the acceleration detection unit 12. Therefore, the detection device 2 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units.

[0113] As described above, also in the detection device 2 shown in FIGS. 23 and 24, the height of the upper surface of the light emitting unit 151 is different from the height of the upper surface of the light receiving unit 152. Thereby, the detection device 2 can suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from being received by the light receiving unit 152. Also, in the detection device 2 shown in FIGS. 23 and 24, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 2 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 2 can reduce the amount of stray light incident on the light receiving unit 152 while being miniaturized.

[0114] <Third Modification of the Second Embodiment> In the third modification of the second embodiment, similar to the second embodiment, the light emitting unit 151 is provided on the base unit 11, and the light receiving unit 152 is provided on the lid unit 13. However, in the third modification of the second embodiment, different from the second embodiment, in the direction A3, the control unit 14 is located between the light emitting unit 151 and the light receiving unit 152. FIG. 25 is a front view showing a third modification of the configuration of the detection device 2. FIG. 26 is a top view of the detection device 2 shown in FIG. 25. In FIG. 25, in order to clearly show the internal configuration of the detection device 2, the member covering the front inside of the detection device 2 is omitted. Also, in FIG. 26, in order to clearly show the internal configuration of the detection device 2, the member covering the upper surface inside of the detection device 2 is omitted.

[0115] In the examples shown in FIGS. 25 and 26, the light-emitting unit 151 is provided on the base 11. On the other hand, in this example, the light-receiving unit 152 is provided on the lid 13. Therefore, also in this example, the height of the upper surface of the light-receiving unit 152 is higher than the height of the upper surface of the light-emitting unit 151. Further, in this example, the light-emitting unit 151, the light-receiving unit 152, and the control unit 14 are arranged in the order of the light-emitting unit 151, the control unit 14, and the light-receiving unit 152 in the direction A3. That is, the control unit 14 is located between the light-emitting unit 151 and the light-receiving unit 152 in the direction A3. In this case, the light emitted from the light-emitting unit 151 and directed toward the light-receiving unit 152 does not reach the light-receiving unit 152 unless it passes through reflection, refraction, diffraction, or the like. Therefore, in this example, the detection device 2 can more reliably suppress at least a part of the light emitted from the light-emitting unit 151 and directed toward the light-receiving unit 152 from directly entering the light-receiving unit 152 and being received by the light-receiving unit 152.

[0116] Also, in the examples shown in FIGS. 25 and 26, the positional relationship between the light-emitting unit 151 and the light-receiving unit 152 may be reversed. In this case, the height of the upper surface of the light-emitting unit 151 is higher than the height of the upper surface of the light-receiving unit 152. As a result, in the detection device 2, the light emitted from the light-emitting unit 151 does not travel toward the light-receiving unit 152 but upward unless it passes through reflection, refraction, diffraction, or the like. Also by this, the detection device 2 can suppress at least a part of the light emitted from the light-emitting unit 151 and directed toward the light-receiving unit 152 from directly entering the light-receiving unit 152 and being received by the light-receiving unit 152.

[0117] Note that the light-emitting unit 151 may be configured to be provided on the base 11 via a spacer or the like. Also, the light-receiving unit 152 may be configured to be provided on the control unit 14 via a spacer or the like.

[0118] Also, in the examples shown in FIGS. 25 and 26, the height of the upper surface of the light emitting unit 151 and the height of the upper surface of the light receiving unit 152 are both lower than the height of the upper surface of the control unit 14. In this case, the detection device 2 can reduce the thickness in the direction A1, and as a result, can be miniaturized as a whole. In order to obtain such an effect, the height of the upper surface of the light emitting unit 151 and the height of the upper surface of the light receiving unit 152 may both be the same as the height of the upper surface of the control unit 14.

[0119] Also, in the examples shown in FIGS. 25 and 26, the height of the upper surface of the light emitting unit 151 is higher than the height of the bottom surface of the lid unit 13. Therefore, also in this case, in the detection device 2, the amount of light irradiated from the light emitting unit 151 to the acceleration detection unit 12 can be reduced. As a result, the detection device 2 can suppress the heating of the acceleration detection unit 12 due to the incidence of light.

[0120] Also, in the examples shown in FIGS. 25 and 26, the biological information detection unit 15 is housed in the housing unit 16 together with the acceleration detection unit 12. For this reason, the detection device 2 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units.

[0121] As described above, also in the detection device 2 shown in FIGS. 25 and 26, the height of the upper surface of the light emitting unit 151 is different from the height of the upper surface of the light receiving unit 152. Further, in the detection device 2 shown in FIGS. 25 and 26, in the direction A3, the control unit 14 is located between the light emitting unit 151 and the light receiving unit 152. Thereby, the detection device 2 can more reliably suppress at least a part of the light emitted from the light emitting unit 151 and directed toward the light receiving unit 152 from being received by the light receiving unit 152. Also, in the detection device 2 shown in FIGS. 25 and 26, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 2 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 2 can reduce the amount of stray light incident on the light receiving unit 152 while being miniaturized. Also, since the detection device 2 can reduce the amount of stray light incident on the light receiving unit 152 in this way, it is not necessary to provide a light shielding member that blocks light so that stray light does not enter the light receiving unit 152. As a result, the detection device 1 can be more reliably miniaturized.

[0122] In each of the second embodiment and the first to third modification examples of the second embodiment described above, the shapes of the light emitting unit 151 and the light receiving unit 152 may be any shape, may be different from each other, or may be the same as each other. Also, each of the second embodiment and the first to third modification examples of the second embodiment described above may be combined with each other in any manner. Also, each of the second embodiment and the first to third modification examples of the second embodiment described above may be combined with each of the first embodiment and the first to eighth modification examples of the first embodiment in any manner.

[0123] <Third Embodiment> Hereinafter, the third embodiment will be described with reference to the drawings.

[0124] <Outline of the Detection Device According to the Third Embodiment> First, the outline of the detection device according to the third embodiment will be described.

[0125] The detection device according to the third embodiment is attached to a predetermined part of the subject. In the detection device, a predetermined height direction is treated as the upward direction. Further, the detection device includes a base, an acceleration detection unit, a lid portion, a control unit, a light emitting unit, a light receiving unit, a first light shielding member, and a housing portion. The base has a surface orthogonal to the height direction. The acceleration detection unit is provided on the base. The lid portion covers the acceleration detection unit together with the base on the base. The control unit is provided on the lid portion and detects the body movement of the subject based on the output of the acceleration detection unit when the detection device is attached to the part. The biological information detection unit includes a light emitting unit that emits light and a light receiving unit that receives light. The first light shielding member is located between the biological information detection unit and the control unit in the width direction intersecting the height direction. The housing portion houses the base, the acceleration detection unit, the lid portion, the control unit, the biological information detection unit, and the first light shielding member. Thereby, the detection device can block a part of the light reflected on the control unit in the housing portion. As a result, the detection device can reduce the incidence of stray light generated by irregular reflection of light in the housing portion to the light receiving unit while miniaturizing.

[0126] Hereinafter, the configuration of the detection device according to the third embodiment will be described in detail. In the third embodiment, the same reference numerals are given to the same components as in the first embodiment, and the description thereof will be omitted.

[0127] <Configuration of the Detection Device According to the Third Embodiment> Hereinafter, the configuration of the detection device according to the third embodiment will be described by taking the detection device 3 as an example. In the third embodiment, for convenience of explanation, when the detection device 3 is viewed in a certain direction, it will be described as "when viewed from the said direction".

[0128] The detection device 3 has the same configuration as the detection device 1, except that it includes a member that serves as an example of the first light-shielding member. FIG. 27 is a front view showing an example of the configuration of the detection device 3. FIG. 28 is a top view of the detection device 3 shown in FIG. 27. In FIG. 27, in order to clearly show the internal configuration of the detection device 3, the member covering the front inside of the detection device 3 is omitted. Also, in FIG. 28, in order to clearly show the internal configuration of the detection device 3, the member covering the top inside of the detection device 3 is omitted.

[0129] In the example shown in FIGS. 27 and 28, the detection device 3 includes a base portion 11, an acceleration detection portion 12, a lid portion 13, a control portion 14, a biological information detection portion 15, a housing portion 16, and a first light-shielding member 17.

[0130] The first light-shielding member 17 is an example of the aforementioned first light-shielding member. The first light-shielding member 17 can be any member as long as it can block light. For example, the first light-shielding member 17 is a member made of black-painted resin or opaque resin, but it is not limited to this. However, in this case, the first light-shielding member 17 can efficiently absorb light. In the examples shown in FIGS. 27 and 28, the first light-shielding member 17 is a rectangular flat plate-shaped member whose longitudinal direction extends in the direction A2 and whose short-side direction extends in the direction A1. The first light-shielding member 17 is located between the biological information detection unit 15 and the control unit 14 in the direction A3. Therefore, the detection device 3 can block a part of the light reflected on the control unit 14 in the housing unit 16. This leads to suppressing the irregular reflection of light in the housing unit 16. As a result, the detection device 3 can reduce the incidence of stray light generated by the irregular reflection of light in the housing unit 16 on the light-receiving unit 152. In addition, since the detection device 3 can reduce the stray light from the control unit 14 side toward the light-receiving unit 152 by the first light-shielding member 17, the detection device 3 can widen the range in which the light-receiving unit 152 can receive the light that can be used for detecting biological information. Note that the first light-shielding member 17 may be provided on the lid portion 13 together with the control unit 14 as shown in FIGS. 27 and 28, or may be configured to be supported by another support member so as to be located between the biological information detection unit 15 and the control unit 14 in the direction A3. However, the light reflection that causes irregular reflection in the housing unit 16 often occurs on the control unit 14. This is because the lid portion 13, which is a silicon cap, easily absorbs light, and the base portion 11, which is a glass substrate, easily transmits light. Therefore, it is desirable that the first light-shielding member 17 be provided on the control unit 14. This is because, in this case, the first light-shielding member 17 can absorb the light reflected in the control unit 14 before it enters other members.

[0131] Further, the first light-shielding member 17 is in contact with the control unit 14. In other words, the first light-shielding member 17 is adjacent to the control unit 14. Therefore, in the detection device 3, when the control unit 14 is provided on the lid portion 13, positioning using the first light-shielding member 17 can be performed. This is useful for facilitating the assembly of the detection device 3.

[0132] Also, in the examples shown in FIGS. 27 and 28, the light-emitting unit 151 is provided on the base portion 11. Therefore, also in this example, the height of the upper surface of the light-emitting unit 151 is higher than the height of the bottom surface of the lid portion 13. Accordingly, also in this case, in the detection device 3, the amount of light irradiated from the light-emitting unit 151 to the acceleration detection unit 12 can be reduced. As a result, the detection device 3 can suppress the heating of the acceleration detection unit 12 due to the incidence of light. Note that the light-emitting unit 151 may be configured to be provided on the base portion 11 via a member such as a spacer.

[0133] Also, in the examples shown in FIGS. 27 and 28, the light-receiving unit 152 is provided on the base portion 11 together with the light-emitting unit 151. Also, in this example, the height of the upper surface of the light-receiving unit 152 is the same as the height of the upper surface of the light-emitting unit 151. Note that the height of the upper surface of the light-receiving unit 152 may be different from the height of the upper surface of the light-emitting unit 151. In FIG. 27, the light-receiving unit 152 is hidden behind the light-emitting unit 151 and cannot be seen. Note that the light-receiving unit 152 may be configured to be provided on the lid portion 13 via a member such as a spacer.

[0134] Also, in the examples shown in FIGS. 27 and 28, the light-receiving unit 152 is provided on the lid portion 13 so as to be aligned with the light-emitting unit 151 in the direction A2.

[0135] Also, in the examples shown in FIGS. 27 and 28, the light-receiving unit 152 is provided on the lid portion 13 so as to be aligned with the control unit 14 in the direction A3.

[0136] As described above, the detection device 3 shown in FIGS. 27 and 28 includes the first light-shielding member 17. Thereby, the detection device 3 can block a part of the light reflected on the control unit 14 in the housing unit 16. This leads to suppressing the irregular reflection of light in the housing unit 16. As a result, the detection device 3 can reduce the amount of stray light received by the light-receiving unit 152 due to the irregular reflection of light in the housing unit 16. Further, since the detection device 3 can reduce the stray light traveling from the control unit 14 side to the light-receiving unit 152 by the first light-shielding member 17, the range in which the light-receiving unit 152 can receive the light that can be used for detecting biological information can be expanded. Also, in the detection device 3 shown in FIGS. 27 and 28, the acceleration detection unit 12 and the biological information detection unit 15 are housed in the housing unit 16. Thereby, the detection device 3 can be miniaturized as compared with the case where the biological information detection unit 15 and the acceleration detection unit 12 are housed in separate housing units. That is, the detection device 3 can reduce the incidence of stray light generated by the irregular reflection of light in the housing unit 16 on the light-receiving unit 152 while being miniaturized.

[0137] <First Modification Example of the Third Embodiment> In the first modification example of the third embodiment, the detection device 3 includes a second light-shielding member 18, a third light-shielding member 19, a fourth light-shielding member 20, and a fifth light-shielding member 21 in addition to the configuration described in the third embodiment. FIG. 29 is a front view showing a first modification example of the configuration of the detection device 3. FIG. 30 is a side view of the detection device 3 shown in FIG. 29. FIG. 31 is a top view of the detection device 3 shown in FIG. 29. In FIG. 29, for clearly showing the internal configuration of the detection device 3, the member covering the front inside of the detection device 3 is omitted. Also, in FIG. 30, for clearly showing the internal configuration of the detection device 3, the member covering the side inside of the detection device 3 is omitted. Further, in FIG. 31, for clearly showing the internal configuration of the detection device 3, the member covering the top inside of the detection device 3 is omitted.

[0138] Here, for the sake of convenience of explanation, among the inner walls of the accommodating portion 16, the inner wall on the negative Y-axis side will be described as the first wall W1, the inner wall on the negative X-axis side of the inner walls of the accommodating portion 16 will be described as the second wall W2, and the inner wall on the positive X-axis side of the inner walls of the accommodating portion 16 will be described as the third wall W3. That is, the third wall W3 is the inner wall of the accommodating portion 16 that faces the second wall W2 in the direction A2.

[0139] In the example shown in FIGS. 29 to 31, the second light-shielding member 18 may be any member as long as it is a sheet-like member that shields light. For example, it may be a black-painted resin-made or opaque resin-made light-shielding sheet, etc., but is not limited thereto. However, in this case, the second light-shielding member 18 can efficiently absorb light. The second light-shielding member 18 is provided on the bottom surface so as to be located between the bottom surface of the accommodating portion 16 and the base portion 11 in the direction A1. In this example, the second light-shielding member 18 is a rectangular light-shielding sheet provided on the bottom surface so as to extend from the first wall W1 to the lid portion 13 in the direction A3 when viewed in the direction opposite to the direction A1. Therefore, the second light-shielding member 18 overlaps both the light-emitting portion 151 and the light-receiving portion 152 in the direction A1. Thereby, the second light-shielding member 18 can absorb the light that could not be completely shielded by the lid portion 13. Hereinafter, among the regions on the bottom surface, the region overlapping the second light-shielding member 18 in FIG. 31 will be described as the target region. The second light-shielding member 18 may be configured to cover a part of the target region, or may be configured to cover the entire target region as shown in FIGS. 29 to 31. Further, the second light-shielding member 18 may be configured to cover at least a part of the region other than the target region of the regions on the bottom surface together with at least a part of the target region. Also, the second light-shielding member 18 may be configured to overlap either one of the light-emitting portion 151 and the light-receiving portion 152, or may be configured not to overlap both the light-emitting portion 151 and the light-receiving portion 152.

[0140] When the detection device 3 includes the second light-shielding member 18, at least a part of the light incident on the bottom surface of the housing portion 16, such as the light transmitted through the base portion 11, can be absorbed by the second light-shielding member 18. As a result, the detection device 3 can suppress the irregular reflection of light within the housing portion 16. That is, in this case, the detection device 3 can more reliably reduce the amount of stray light received by the light receiving portion 152 due to the irregular reflection of light within the housing portion 16.

[0141] Also, in the example shown in FIGS. 29 to 31, the third light-shielding member 19 may be any member as long as it is a sheet-like member that blocks light. For example, it may be a black-painted resin or an opaque resin light-shielding sheet, etc., but is not limited thereto. However, in this case, the third light-shielding member 19 can efficiently absorb light. The third light-shielding member 19 is provided on the first wall W1. In this example, the third light-shielding member 19 covers the entire first wall W1. However, the third light-shielding member 19 may be configured to cover a part of the first wall W1.

[0142] When the detection device 3 includes the third light-shielding member 19, at least a part of the light incident on the first wall W1, such as the light reflected by the metal on the surface of the acceleration detection portion 12 which is a silicon structure, can be absorbed by the third light-shielding member 19. As a result, the detection device 3 can suppress the irregular reflection of light within the housing portion 16. That is, in this case, the detection device 3 can more reliably reduce the incidence of stray light generated by the irregular reflection of light within the housing portion 16 on the light receiving portion 152.

[0143] Also, in the example shown in FIGS. 29 to 31, the fourth light-shielding member 20 may be any member as long as it is a sheet-like member that blocks light. For example, it may be a black-painted resin or an opaque resin light-shielding sheet, etc., but is not limited thereto. However, in this case, the fourth light-shielding member 20 can efficiently absorb light. The fourth light-shielding member 20 is provided on the second wall W2. In this example, the fourth light-shielding member 20 covers the entire second wall W2. However, the fourth light-shielding member 20 may be configured to cover a part of the second wall W2.

[0144] When the detection device 3 includes the fourth light-shielding member 20, at least a part of the light incident on the second wall W2, such as the light reflected by the metal on the surface of the acceleration detection unit 12 which is a silicon structure, can be absorbed by the fourth light-shielding member 20. As a result, the detection device 3 can suppress the irregular reflection of light in the housing portion 16. That is, in this case, the detection device 3 can more reliably reduce the incidence of stray light generated by the irregular reflection of light in the housing portion 16 on the light receiving portion 152.

[0145] Also, in the examples shown in FIGS. 29 to 31, the fifth light-shielding member 21 may be any member as long as it is a sheet-like member that blocks light. For example, it may be a black-painted resin light-shielding sheet or the like, but it is not limited thereto. However, in this case, the fifth light-shielding member 21 can efficiently absorb light. The fifth light-shielding member 21 is provided on the third wall W3. In this example, the fifth light-shielding member 21 covers the entire third wall W3. However, the fifth light-shielding member 21 may be configured to cover a part of the third wall W3.

[0146] When the detection device 3 includes the fifth light-shielding member 21, at least a part of the light incident on the third wall W3, such as the light reflected by the metal on the surface of the acceleration detection unit 12 which is a silicon structure, can be absorbed by the fifth light-shielding member 21. As a result, the detection device 3 can suppress the irregular reflection of light in the housing portion 16. That is, in this case, the detection device 3 can more reliably reduce the incidence of stray light generated by the irregular reflection of light in the housing portion 16 on the light receiving portion 152.

[0147] Note that the detection device 3 may be configured not to include some of the second light-shielding member 18 to the fifth light-shielding member 21. However, in the detection device 3, the more the number of the light-shielding members provided among the four light-shielding members of the second light-shielding member 18 to the fifth light-shielding member 21, the easier it is to absorb the light that becomes stray light in the housing portion 16. Therefore, it is desirable that the detection device 3 includes two or more of the second light-shielding member 18 to the fifth light-shielding member 21.

[0148] As described above, the detection device 3 shown in FIGS. 29 to 31 includes the second light shielding member 18 to the fifth light shielding member 21. Thereby, the detection device 3 can suppress the irregular reflection of light in the housing portion 16. That is, the detection device 3 can more surely reduce the incidence of stray light generated by the irregular reflection of light in the housing portion 16 on the light receiving portion 152.

[0149] <Second Modification of the Third Embodiment> In the second modification of the third embodiment, the detection device 3 includes a sixth light shielding member 22 in addition to the configuration described in the first modification of the third embodiment. FIG. 32 is a front view showing a second modification of the configuration of the detection device 3. In FIG. 32, in order to clearly show the internal configuration of the detection device 3, the member covering the front of the inside of the detection device 3 is omitted.

[0150] The sixth light shielding member 22 may be any member as long as it is a sheet-like member that blocks light. For example, it may be a black-painted resin or an opaque resin light shielding sheet, but is not limited thereto. However, in this case, the sixth light shielding member 22 can efficiently absorb light. The sixth light shielding member 22 is provided on the second member 162 so as to cover at least a part of the region of the upper surface of the second member 162 that does not overlap the target region in the direction A1. Thereby, the detection device 3 can make the light reflected at the target site among the light emitted from the light emitting unit 151 enter the housing portion 16, while suppressing the entry of light other than the light, such as ambient light, into the housing portion 16. As a result, the detection device 3 can more surely suppress the irregular reflection of light in the housing portion 16. That is, the detection device 3 can more surely reduce the incidence of stray light generated by the irregular reflection of light in the housing portion 16 on the light receiving portion 152.

[0151] As described above, the detection device 3 shown in FIG. 32 includes the sixth light-shielding member 22. Thereby, the detection device 3 can suppress the irregular reflection of light in the housing portion 16. That is, the detection device 3 can more reliably reduce the incidence of stray light generated by the irregular reflection of light in the housing portion 16 on the light-receiving portion 152.

[0152] <Third Modified Example of the Third Embodiment> In the third modified example of the third embodiment, the detection device 3 includes a filter 23 in addition to the configuration described in the third embodiment. FIG. 33 is a front view showing a third modified example of the configuration of the detection device 3. In FIG. 33, for the sake of clearly showing the internal configuration of the detection device 3, the member covering the front inside of the detection device 3 is omitted.

[0153] The filter 23 is provided on the upper surface of the light-receiving portion 152. In FIG. 33, the light-receiving portion 152 is hidden behind the light-emitting portion 151 and cannot be seen. The filter 23 is, for example, an angle-limiting filter. When the filter 23 is an angle-limiting filter, the detection device 3 can cause the light-receiving portion 152 to receive only the light incident at a predetermined angle with respect to the central axis about the virtual axis orthogonal to the upper surface of the light-receiving portion 152. The predetermined angle is, for example, 30°. Thereby, the detection device 3 can cause the light-receiving portion 152 to receive the light reflected at the target site among the light emitted from the light-emitting portion 151, while suppressing the light-receiving portion 152 from receiving light other than the light, such as ambient light. The predetermined angle may be an angle smaller than 30° or an angle larger than 30°. However, the larger the predetermined angle is than 30°, the easier it is for the light to be received by the light-receiving portion 152. For this reason, it is desirable that the predetermined angle be 30° or less.

[0154] Note that the filter 23 may be, for example, an optical filter that transmits light in a predetermined wavelength band. When the filter 23 is an optical filter, the detection device 3 can selectively cause the light reflected by the target site among the light emitted from the light emitting unit 151 to be received by the light receiving unit 152. As a result, it is possible to suppress the light receiving unit 152 from receiving light other than the light, such as ambient light.

[0155] Further, the filter 23 may be a filter in which an angle limiting filter and an optical filter are laminated. Thereby, the detection device 3 can cause the light reflected by the target site among the light emitted from the light emitting unit 151 to be received by the light receiving unit 152, while suppressing the light receiving unit 152 from receiving light other than the light, such as ambient light.

[0156] In the detection device 3 described above, a slit may be formed in the second member 162 of the housing portion 16. In this case, this slit can obtain the same effect as the effect obtained when the filter 23 is an angle limiting filter. That is, also in this case, the detection device 3 can cause the light reflected by the target site among the light emitted from the light emitting unit 151 to be received by the light receiving unit 152, while suppressing the light receiving unit 152 from receiving light other than the light, such as ambient light.

[0157] Further, the detection device 3 described above may be configured to include a light shielding wall that surrounds the periphery around the direction A1 of the light receiving unit 152 and extends from the light receiving unit 152 to the lower surface of the second member 162 of the housing portion 16. Also in this case, the detection device 3 can cause the light reflected by the target site among the light emitted from the light emitting unit 151 to be received by the light receiving unit 152, while suppressing the light receiving unit 152 from receiving light other than the light, such as ambient light. Note that the height of the light shielding wall may be a height that does not reach the lower surface of the second member 162.

[0158] Here, in each of the detection devices 1, 2, and 3 described above, the biological information detection unit 15 may be configured to include a plurality of light receiving units including the light receiving unit 152. However, as described above, each of the detection devices 1, 2, and 3 can accurately detect desired biological information by adjusting at least one of the wavelength band, intensity, etc. of the light emitted from the light emitting unit 151. Therefore, the biological information detection unit 15 does not necessarily need to include the plurality of light receiving units. For this reason, in each of the examples described above, the biological information detection unit 15 includes one light receiving unit 152. Further, in each of the detection devices 1, 2, and 3, the fact that the biological information detection unit 15 includes one light receiving unit 152 without including a plurality of light receiving units leads to suppression of an increase in power consumption, which is desirable.

[0159] Also, in each of the detection devices 1, 2, and 3 described above, the control unit 14 may be configured to be surrounded by a light shielding member. This is because the IC chip configured as the control unit 14 may malfunction due to light. For the same reason, in each of the housing portions 16 of the detection devices 1, 2, and 3 described above, a light shielding member that blocks the incidence of light to the control unit 14 may be provided.

[0160] Here, in each of the detection devices 1, 2, and 3 described above, the biological information detection unit 15 may be configured to include a plurality of light receiving units including the light receiving unit 152. However, as described above, each of the detection devices 1, 2, and 3 can accurately detect desired biological information by adjusting at least one of the wavelength band, intensity, etc. of the light emitted from the light emitting unit 151. Therefore, the biological information detection unit 15 does not necessarily need to include the plurality of light receiving units. For this reason, in each of the examples described above, the biological information detection unit 15 includes one light receiving unit 152. Further, in each of the detection devices 1, 2, and 3, the fact that the biological information detection unit 15 includes one light receiving unit 152 without including a plurality of light receiving units leads to suppression of an increase in power consumption, which is desirable.

[0161] In addition, the matters described above may be combined in any manner.

[0162] <Appendix 1> [1] A detection device attached to a predetermined part of a subject, comprising a base having a surface orthogonal to a predetermined first direction with the first direction being upward, an acceleration detection unit provided on the base, a lid portion provided on the base to cover the acceleration detection unit together with the base, a control unit provided on the lid portion for detecting the body movement of the subject based on the output of the acceleration detection unit when the detection device is attached to the part, a light emitting unit for emitting light, a light receiving unit for receiving the light, and a housing unit for housing the base, the acceleration detection unit, the lid portion, the control unit, the light emitting unit, and the light receiving unit, wherein the height of the upper surface of the light emitting unit in the first direction is equal to or higher than the height of the bottom surface of the lid portion in the first direction. [2] The control unit according to [1], wherein the control unit detects biological information of the subject according to the intensity of the light received by the light receiving unit and corrects the biological information according to the detected body movement. [3] The detection device according to [1] or [2], wherein both the light emitting unit and the light receiving unit are provided on the control unit. [4] The detection device according to [1] or [2], wherein both the light emitting unit and the light receiving unit are provided on the lid portion or the base. [5] The detection device according to [4], wherein the height of the upper surface of the light emitting unit in the first direction and the height of the upper surface of the light receiving unit in the first direction are both equal to or lower than the height of the upper surface of the control unit in the first direction. [6] The control unit extends in a second direction intersecting the first direction, the light emitting unit is provided so as to be aligned with the control unit in a third direction intersecting each of the first direction and the second direction, and the light receiving unit is provided so as to be aligned with the control unit in the third direction and so as to be aligned with the light emitting unit in the second direction. The detection device according to [4]. [7] The control unit extends in a second direction intersecting the first direction, the light emitting unit is provided so as to be aligned with the control unit in a third direction intersecting each of the first direction and the second direction, and the light receiving unit is provided so as to be aligned with each of the control unit and the light emitting unit in the third direction and so as to be positioned between the light emitting unit and the control unit. The detection device according to [4]. [8] The control unit extends in a second direction intersecting the first direction, the light emitting unit is provided so as to be aligned with the control unit in a third direction intersecting each of the first direction and the second direction, and the light receiving unit is provided so as to be aligned with the control unit in the second direction. The detection device according to [4]. [9] When viewed from the first direction, the size of the light emitting unit is different from the size of the light receiving unit. The detection device according to any one of [1] to [8].

[10] When viewed from the first direction, the light receiving unit is larger than the light emitting unit. The detection device according to [9].

[0163] <Supplementary Note 2> [1] A detection device attached to a predetermined part of a subject, comprising: a base having a surface orthogonal to a predetermined first direction, with the first direction being upward; an acceleration detection unit provided on the base; a lid portion provided on the base to cover the acceleration detection unit together with the base; a control unit provided on the lid portion for detecting the body movement of the subject based on the output of the acceleration detection unit when the detection device is attached to the part; a light emitting unit for emitting light; a light receiving unit for receiving the light; and a housing unit for housing the base, the acceleration detection unit, the lid portion, the control unit, the light emitting unit, and the light receiving unit, wherein the height of the upper surface of the light emitting unit in the first direction is equal to or greater than the height of the bottom surface of the lid portion in the first direction, and the control unit is provided between the light emitting unit and the light receiving unit in the direction in which the light emitting unit and the light receiving unit are aligned. [2] The detection device according to [1], wherein the control unit detects biometric information of the subject according to the intensity of the light received by the light receiving unit, and corrects the biometric information according to the detected body movement. [3] The detection device according to [1] or [2], wherein both the light emitting unit and the light receiving unit are provided on the lid portion or the base. [4] The detection device according to [3], wherein the height of the upper surface of the light emitting unit in the first direction and the height of the upper surface of the light receiving unit in the first direction are both equal to or less than the height of the upper surface of the control unit in the first direction. [5] The detection device according to [3], wherein the control unit extends in a second direction intersecting the first direction, and the direction in which the light emitting unit and the light receiving unit are aligned is a third direction intersecting each of the first direction and the second direction. [6] The detection device according to any one of [1] to [5], wherein the size of the light emitting unit is different from the size of the light receiving unit when viewed from the first direction. [7] The detection device according to [6], wherein the light receiving unit is larger than the light emitting unit when viewed from the first direction.

[0164] <Appendix 3> [1] A detection device to be attached to a predetermined part of a subject, comprising: a base having a surface orthogonal to a predetermined first direction with the first direction being upward; an acceleration detection unit provided on the base; a lid portion provided on the base to cover the acceleration detection unit together with the base; a control unit provided on the lid portion to detect body movement of the subject based on an output of the acceleration detection unit when the detection device is attached to the part; a light emitting unit that emits light; a light receiving unit that receives the light; and a housing unit that houses the base, the acceleration detection unit, the lid portion, the control unit, the light emitting unit, and the light receiving unit, wherein a height of an upper surface of the light emitting unit in the first direction is different from a height of an upper surface of the light receiving unit in the first direction. [2] The control unit according to [1], wherein the control unit detects biological information of the subject according to an intensity of the light received by the light receiving unit and corrects the biological information according to the detected body movement. [3] The control unit according to [1] or [2], wherein the control unit extends in a second direction intersecting the first direction, the light emitting unit is provided to be aligned with the control unit in a third direction intersecting each of the first direction and the second direction, and the light receiving unit is provided to be aligned with the control unit in the third direction and to be aligned with the light emitting unit in the second direction. [4] The control unit according to [1] or [2], wherein the control unit extends in a second direction intersecting the first direction, the light emitting unit is provided to be aligned with the control unit in a third direction intersecting each of the first direction and the second direction, and the light receiving unit is provided to be aligned with each of the control unit and the light emitting unit in the third direction. [5] The control unit according to [4], wherein the control unit is provided between the light emitting unit and the light receiving unit in the third direction. [6] The height of the upper surface of the light emitting part in the first direction and the height of the upper surface of the light receiving part in the first direction are each a height equal to or less than the height of the upper surface of the control part in the first direction. The detection device according to any one of [1] to [5]. [7] The light emitting part is provided on any one of the base part, the lid part, and the control part, and the light receiving part is provided on any one of the two members among the base part, the lid part, and the control part on which the light emitting part is not provided. The detection device according to [1] or [2]. [8] The height of the upper surface of the light receiving part in the first direction is higher than the height of the upper surface of the light emitting part in the first direction. The detection device according to any one of [1] to [6]. [9] The height of the upper surface of the light emitting part in the first direction is higher than the height of the upper surface of the light receiving part in the first direction. The detection device according to any one of [1] to [6].

[10] When viewed from the first direction, the size of the light emitting part is different from the size of the light receiving part. The detection device according to any one of [1] to [9].

[11] When viewed from the first direction, the light receiving part is larger than the light emitting part. The detection device according to

[10] .

[0165] <Supplementary Note 4> [1] A detection device to be attached to a predetermined part of a subject, comprising a base having a surface orthogonal to a predetermined height direction with the height direction being upward, an acceleration detection part provided on the base, a lid part provided on the base to cover the acceleration detection part together with the base, a control part provided on the lid part to detect body movement of the subject based on an output of the acceleration detection part when the detection device is attached to the part, a light emitting part that emits light, a light receiving part that receives the light, a biological information detection part having the light emitting part and the light receiving part, a first light shielding member positioned between the biological information detection part and the control part in a width direction intersecting the height direction, and a housing part that houses the base, the acceleration detection part, the lid part, the control part, the biological information detection part, and the first light shielding member. [2] The control part detects biological information of the subject according to the intensity of the light received by the light receiving part, and corrects the biological information according to the detected body movement, the detection device according to [1]. [3] The first light shielding member is provided on the lid part, the detection device according to [1] or [2]. [4] The light emitting part and the light receiving part are provided between the lid part and a first wall of the housing part in the width direction, the detection device according to any one of [1] to [3]. [5] The light emitting part and the light receiving part are provided on the base, the detection device according to any one of [1] to [4]. [6] The first light shielding member is provided so as to be adjacent to the control part in the width direction, the detection device according to any one of [1] to [5]. [7] The detection device according to any one of [1] to [6], further comprising a second light shielding member positioned between a bottom surface of the housing part and the base in the height direction. [8] The second light shielding member overlaps at least one of the light emitting part and the light receiving part in the height direction, the detection device according to [7]. [9] The second light-shielding member is the detection device according to [8], which extends from the first wall of the accommodating portion toward the lid portion in the width direction when viewed in a direction opposite to the height direction.

[10] The detection device according to [9], comprising a third light-shielding member provided on the first wall.

[11] The accommodating portion has a second wall and a third wall. The second wall intersects each of the height direction and the width direction, and faces the third wall in the arrangement direction in which the light-receiving portion and the light-emitting portion are arranged. The detection device includes a fourth light-shielding member provided on the second wall and a fifth light-shielding member provided on the third wall. The detection device is the detection device according to

[10] .

[12] The detection device according to any one of [1] to

[11] , wherein an angle-limiting filter is provided in the light-receiving portion.

[13] The detection device according to any one of [1] to

[12] , wherein an optical filter is provided in the light-receiving portion.

[14] The detection device according to any one of [1] to

[13] , wherein the first light-shielding member is made of an opaque resin.

[0166] As described above, the embodiments of this disclosure have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and changes, substitutions, deletions, etc. may be made without departing from the gist of this disclosure.

Explanation of Reference Numerals

[0167] 1, 2, 3... Detection device; 11... Base portion; 12... Acceleration detection portion; 13... Lid portion; 14... Control portion; 15... Biological information detection portion; 16... Accommodating portion; 17... First light-shielding member; 18... Second light-shielding member; 19... Third light-shielding member; 20... Fourth light-shielding member; 21... Fifth light-shielding member; 22... Sixth light-shielding member; 23... Filter; 151... Light-emitting portion; 152... Light-receiving portion; 161... First member; 162... Second member; 163... Adhesive; TC... Three-dimensional coordinate system; W1... First wall; W2... Second wall; W3... Third wall

Claims

1. A detection device to be attached to a predetermined part of a subject, with a predetermined height direction defined as upward, a base having a surface orthogonal to the height direction, an acceleration detection part provided on the base, a lid part provided on the base to cover the acceleration detection part together with the base, a control part provided on the lid part to detect the body movement of the subject based on the output of the acceleration detection part when the detection device is attached to the part, a biological information detection part having a light emitting part that emits light and a light receiving part that receives the light, a first light shielding member located between the biological information detection part and the control part in a width direction intersecting the height direction, a housing part that houses the base, the acceleration detection part, the lid part, the control part, the biological information detection part, and the first light shielding member, The detection device comprising the above.

2. The control part: detects the biological information of the subject according to the intensity of the light received by the light receiving part, and corrects the biological information according to the detected body movement, The detection device according to Claim 1.

3. The first light shielding member is provided on the lid part, The detection device according to Claim 1.

4. The light emitting part and the light receiving part are provided between the lid part and the first wall of the housing part in the width direction, The detection device according to Claim 1.

5. The light emitting part and the light receiving part are provided on the base, The detection device according to Claim 1.

6. The first light shielding member is provided adjacent to the control part in the width direction, The detection device according to Claim 1.

7. Comprises a second light shielding member located between the bottom surface of the housing part and the base in the height direction, The detection device according to Claim 1.

8. The second light shielding member overlaps at least one of the light emitting part and the light receiving part in the height direction, The detection device according to Claim 7.

9. When viewed in the direction opposite to the height direction, the second light shielding member extends from the first wall of the housing part toward the lid part in the width direction, The detection device according to Claim 8.

10. Comprises a third light shielding member provided on the first wall, The detection device according to Claim 9.

11. The housing part has a second wall and a third wall, The second wall intersects each of the height direction and the width direction, and faces the third wall in the arrangement direction in which the light receiving part and the light emitting part are arranged, The detection device is The fourth light-shielding member provided on the second wall, The fifth light-shielding member provided on the third wall, comprising the detection device according to claim 10. The detection device according to claim 10.

12. An angle-limiting filter is provided in the light-receiving part, The detection device according to claim 1.

13. An optical filter is provided in the light-receiving part, The detection device according to claim 1.

14. The first light-shielding member is made of an opaque resin, The detection device according to claim 1.

Images