Imaging unit, management system, and loading system

Abstract

To provide an imaging unit capable of setting the imaging range of the imaging unit to a wide angle.SOLUTION: An imaging unit 1 is attached to a structure in a target space and has a function to detect objects within the target space. The imaging unit 1 includes a housing 100, an imaging unit 13, and an optical member 17. The imaging unit 13 has imaging lenses 132 including multiple single lenses and is housed in the housing 100. The optical member 17 is placed at the opposite side of the structure with respect to the imaging unit 13 and makes the angle of view of the imaging lens 132 wide.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure generally relates to an imaging device, a management system, and a load system, and more particularly to an imaging device including an imaging unit having an imaging lens, a management system including the imaging device, and a load system including the imaging device. [Background technology]

[0002] The lighting control system described in Patent Document 1 includes an image sensor device (imaging device), a lighting fixture, and a control device. The image sensor device detects the presence or absence of a person within a detection area on the floor surface and transmits a detection signal indicating the presence or absence of the person to the control device. The control device outputs a control signal to the lighting fixture to control the lighting state of the lighting fixture in response to the detection signal transmitted from the image sensor device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-20301 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in a lighting control system such as that described in Patent Document 1, it is desirable to make the imaging range of the image sensor device (imaging device) a wide angle.

[0005] An object of the present disclosure is to provide an imaging device, a management system, and a load system that are capable of widening the imaging range of an imaging unit. [Means for solving the problem]

[0006] An imaging device according to one aspect of the present disclosure is attached to a structure in a target space and has a function of detecting a detection target in the target space. The imaging device includes a housing, an imaging unit, and an optical member. The imaging unit has an imaging lens including a plurality of single lenses and is housed in the housing. The optical member is disposed on the opposite side of the imaging unit from the structure, and sets the angle of view of the imaging lens to a wide angle.

[0007] A management system according to an aspect of the present disclosure includes the imaging device and a management device, the management device acquiring information about a detection result of the detection unit.

[0008] A load system according to an aspect of the present disclosure includes the imaging device and a load device, the load device operating based on a detection result of the detection unit. Effect of the Invention

[0009] According to an imaging device, a management system, and a load system according to an aspect of the present disclosure, it is possible to make the imaging range of the imaging unit wide-angle. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram of an imaging device, a management system, and a load system according to an embodiment. [Diagram 2] FIG. 2 is a side view showing the imaging device attached to a ceiling. [Diagram 3] FIG. 3 is a front view of the imaging device. [Figure 4] FIG. 4 is a cross-sectional view of the imaging device taken along line X1-X1 of FIG. [Diagram 5] FIG. 5 is a partially enlarged view of FIG. 4 relating to the imaging device. [Figure 6] FIG. 6 is a perspective view of an optical member in the imaging device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The imaging device, management system, and load system according to the embodiments will be described in detail below with reference to the drawings. However, each diagram described in the following embodiments is a schematic diagram, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. Note that the configuration described in the following embodiments is merely an example of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0012] (Embodiment) (1) Overview First, an overview of an imaging device 1, a management system 10, and a load system 20 according to the embodiment will be described with reference to FIGS. 1 to 4. FIG.

[0013] The imaging device 1 according to the embodiment is, for example, a device for detecting a detection target in a target space S1 (see FIG. 2). The target space S1 is, for example, an internal space of a facility such as an office building, a store, a school, or a factory. The detection target is, for example, a person present in the target space S1. In the following, an example will be described in which the facility is an office building. As shown in FIG. 2, the imaging device 1 is attached to a structure 200 in the target space S1, and has a function of detecting a detection target in the target space S1. The structure 200 is, for example, a ceiling of the target space S1 (hereinafter, also referred to as "ceiling 200").

[0014] 3 and 4, the imaging device 1 according to the embodiment includes a housing 100, an imaging unit 13, and an optical member 17. The imaging unit 13 has an imaging lens 132 including a plurality of single lenses, and is housed in the housing 100. The optical member 17 is disposed on the opposite side of the imaging unit 13 from the ceiling 200 (see FIG. 2) side, and makes the angle of view of the imaging lens 132 a wide angle.

[0015] In the imaging device 1 according to the embodiment, the optical member 17 is disposed on the opposite side to the ceiling 200 side (i.e., the target space S1 side) of the imaging unit 13. This makes it possible to make the angle of view of the imaging lens 132 a wide angle, and as a result, it becomes possible to make the imaging range of the imaging unit 13 a wide angle.

[0016] Moreover, the management system 10 according to the embodiment is a system for acquiring and managing information based on the detection result of the detection unit 111 of the imaging device 1. As shown in Fig. 1, the management system 10 includes the imaging device 1 and a management device 2. The management device 2 acquires information related to the detection result of the detection unit 111. The management device 2 is, for example, an integrated controller that manages the imaging device 1, the load device 3, and the control device 4 in an integrated manner.

[0017] Moreover, the load system 20 according to the embodiment is a system for operating a load device 3 based on a detection result of the detection unit 111 of the imaging device 1. As shown in Fig. 1, the load system 20 includes the imaging device 1 and a load device 3. The load device 3 operates based on the detection result of the detection unit 111. The load device 3 is, for example, a lighting fixture 30 (see Fig. 1) installed on a ceiling 200 (see Fig. 2) of the target space S1.

[0018] (2) Details Next, configurations of the imaging device 1, management system 10, and load system 20 according to the embodiment will be described with reference to FIG.

[0019] 1, a management system 10 according to an embodiment includes an imaging device 1 and a management device 2. The management device 2 acquires information related to a detection result of a detection unit 111 of the imaging device 1. As described above, the management device 2 is an integrated controller that manages the imaging device 1, the load device 3, and the control device 4 in an integrated manner.

[0020] 1, a load system 20 according to an embodiment includes an imaging device 1 and a load device 3. The load device 3 operates based on a detection result of a detection unit 111 of the imaging device 1. The load device 3 is, for example, a lighting fixture 30 installed on a ceiling 200 (see FIG. 2) of a target space S1.

[0021] (2.1) Imaging device The imaging device 1 includes, for example, a computer system. The computer system is mainly composed of a processor and a memory as hardware. The processor executes a program recorded in the memory of the computer system to realize the functions of the imaging device 1. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunication line, or may be recorded and provided in a non-transitory recording medium such as a memory card, an optical disk, or a hard disk drive that can be read by the computer system. In this embodiment, the program is stored in a storage unit 14, which will be described later.

[0022] As described above, the imaging device 1 is attached to the ceiling 200 (see FIG. 2) of the target space S1, and has a function of detecting a detection target within the target space S1. As shown in FIG. 1, the imaging device 1 includes a control unit 11, a communication unit 12, an imaging unit 13, a storage unit 14, an infrared receiving unit 15, and a display unit 16.

[0023] (2.1.1) Control Unit The control unit 11 is electrically connected to each of the communication unit 12, the imaging unit 13, the storage unit 14, the infrared receiving unit 15, and the display unit 16. The control unit 11 controls the communication unit 12 to cause the communication unit 12 to communicate with the communication unit 22 of the management device 2. The control unit 11 controls the imaging unit 13 to cause the imaging unit 13 to capture an image of the target space S1 and to acquire an image captured by the imaging unit 13. The control unit 11 controls the storage unit 14 to store information (data) in the storage unit 14 and to read information from the storage unit 14. The control unit 11 receives (receives) an infrared signal from the infrared receiving unit 15. The control unit 11 controls the display unit 16 to cause the display unit 16 to display the operating state of the imaging device 1.

[0024] The control unit 11 has a detection unit 111 as shown in Fig. 1. That is, the imaging device 1 further includes the detection unit 111. The detection unit 111 detects the presence or absence of a detection target in a target space S1 (see Fig. 2) based on an image captured by the imaging unit 13. In this embodiment, the detection range of the detection unit 111 is divided into a plurality of (for example, four) first areas. The detection unit 111 is capable of detecting a detection target in each of the plurality of first areas.

[0025] Further, the detection unit 111 detects the presence or absence of a detection target in a second area, which is the detection range of the infrared receiving unit 15, based on the infrared light received by the infrared receiving unit 15. In this embodiment, the imaging device 1 includes a plurality of (four in this embodiment) infrared receiving units 15. The detection unit 111 detects the presence or absence of a detection target in each of a plurality of second areas that correspond one-to-one to the plurality of infrared receiving units 15.

[0026] (2.1.2) Communications Section The communication unit 12 includes a communication interface for communicating with the management device 2. The communication unit 12 transmits a first communication signal including the detection result of the detection unit 111 to the management device 2. More specifically, the communication unit 12 transmits a first communication signal including the detection result of the detection unit 111 for each first area to the management device 2. In addition, the communication unit 12 transmits a second communication signal including the detection result of the detection unit 111 for each second area to the management device 2.

[0027] (2.1.3) Imaging unit The imaging unit 13 captures an image of the target space S1. More specifically, the imaging unit 13 captures an image of the target space S1 such that the floor surface of the target space S1 is included in the imaging range of the imaging unit 13. Specifically, the imaging unit 13 captures an image of a predetermined range including an area directly below the imaging unit 13 in a state in which the imaging device 1 is attached to the ceiling 200 (the state shown in FIG. 2). That is, in a state in which the imaging device 1 is attached to the ceiling (structure) 200, the optical axis OA1 of the imaging unit 13 faces vertically downward (see FIG. 5).

[0028] As shown in Fig. 4, the imaging unit 13 has an imaging element 131 and an imaging lens 132. The imaging element 131 is, for example, a CCD (Charge Coupled Devices) image sensor or a CMOS (Complementary Metal-Oxide Semiconductor) image sensor. The imaging element 131 is mounted on one surface (the lower surface in Fig. 4) of a first printed circuit board 181. The first printed circuit board 181 is, for example, a glass epoxy board. The first printed circuit board 181 is, for example, formed in a disk shape.

[0029] The imaging lens 132 includes a plurality of single lenses. Each of the plurality of single lenses is, for example, a plano-convex lens. The imaging lens 132 is disposed in front of the imaging element 131 (the lower side in FIG. 4) via a holder 103 described later. The imaging lens 132 also has an exit surface 1321 (see FIG. 5). The exit surface 1321 is constituted by the exit surfaces of the plurality of single lenses.

[0030] (2.1.4) Storage section The storage unit 14 is, for example, a memory such as a Read Only Memory (ROM), a Random Access Memory (RAM), or an Electrically Erasable Programmable Read Only Memory (EEPROM). The storage unit 14 stores, for example, unique identification information (for example, an address) assigned to the imaging device 1. The storage unit 14 may also store, for example, the detection results of the detection unit 111 in chronological order.

[0031] (2.1.5) Infrared receiver The infrared receiving unit 15 is, for example, a PIR (Passive Infrared) sensor. The infrared receiving unit 15 detects infrared rays emitted from the human body. The infrared receiving unit 15 has a detection range (second area) that overlaps with at least a part of the imaging range of the imaging unit 13. When a person, who is the detection target, enters the detection range of the infrared receiving unit 15, the amount of infrared rays incident on the infrared receiving unit 15 changes by an amount equivalent to the temperature difference between the surface of the human body and the background, thereby making it possible to capture the movement of the person.

[0032] The imaging device 1 according to this embodiment includes a plurality of (four in FIG. 3) infrared receiving units 15. The plurality of infrared receiving units 15 are arranged at equal intervals around the imaging unit 13 arranged at the center of the housing 100, which has a circular shape in a plan view from the bottom (the target space S1 side).

[0033] (2.1.6) Display section The imaging device 1 includes a plurality of display units 16 (two in FIG. 3). Each of the plurality of display units 16 includes, for example, a light-emitting element (for example, an LED). The light-emitting element of each display unit 16 turns on, blinks, or turns off, for example, depending on the operating state of the imaging device 1. The light-emitting elements of each display unit 16 may be elements that emit light of the same color, or may be elements that emit light of different colors. Furthermore, the light-emitting elements of each display unit 16 may be configured to adjust their light depending on the operating state of the imaging device 1. Furthermore, the number of light-emitting elements is not limited to two, and may be one, or three or more.

[0034] (2.2) Management device The management device 2 includes, for example, a computer system. The computer system is mainly composed of a processor and a memory as hardware. The processor executes a program recorded in the memory of the computer system, thereby realizing the functions of the management device 2. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunication line, or may be recorded and provided in a non-transitory recording medium such as a memory card, an optical disk, or a hard disk drive that can be read by the computer system. In this embodiment, the program is stored in a storage unit 23, which will be described later.

[0035] As shown in FIG. 1, the management device 2 includes a control unit 21, a communication unit 22, and a storage unit .

[0036] (2.2.1) Control section The control unit 21 is electrically connected to each of the communication unit 22 and the storage unit 23. The control unit 21 controls the communication unit 22 to cause the communication unit 22 to communicate with the communication unit 12 of the imaging device 1. The control unit 21 controls the storage unit 23 to store information (data) in the storage unit 23 and to read information from the storage unit 23.

[0037] In addition, the control unit 21 outputs a control signal to the lighting fixture 30 for controlling the lighting fixture 30 (load device 3), and obtains information from the lighting fixture 30 indicating the state of the lighting fixture 30 (e.g., on, blinking, or off).

[0038] (2.2.2) Communications Section Communication unit 22 includes a communication interface for communicating with each of imaging device 1 and control device 4. Communication unit 22 acquires (receives) the above-mentioned first communication signal and second communication signal from imaging device 1 through communication with communication unit 12 of imaging device 1. Communication unit 22 also outputs (transmits) a control signal for controlling lighting device 30 to control device 4 through communication with control device 4, and acquires (receives) information indicating the state of lighting device 30 from control device 4.

[0039] (2.2.3) Storage section The storage unit 23 is, for example, a memory such as a ROM, a RAM, or an EEPROM. The storage unit 23 stores, for example, unique identification information (for example, an address) assigned to the management device 2. The storage unit 23 further stores, for example, unique identification information (for example, an address) assigned to the corresponding imaging device 1, load device 3, and control device 4. The storage unit 23 also stores, for example, the detection result of the detection unit 111 in association with time information. The time information includes, for example, the time when the detection target is detected by the detection unit 111, or the time when the detection target is no longer detected by the detection unit 111.

[0040] (2.3) Loading device As shown in Fig. 1, the load device 3 includes, for example, a lighting fixture 30. The load device 3 is connected to the management device 2 via a control device 4. That is, in the example of Fig. 1, the load device 3 is controlled by the control device 4 connected between the load device 3 and the management device 2. In other words, the control device 4 is a device for controlling the load device 3. The control device 4 controls the state (on, blinking, or off) of the lighting fixture 30 serving as the load device 3 in accordance with a control signal transmitted from the management device 2. In addition, the control device 4 outputs (transmits) information indicating the state of the lighting fixture 30 to the management device 2.

[0041] The load device 3 is not limited to the lighting fixture 30, but may be any device whose operating state can be switched depending on the detection result of the detection unit 111, for example, an air conditioning device (e.g., an air conditioner, a ventilation fan, or an air purifier).

[0042] (3) Structure of the imaging device Next, the structure of the imaging device 1 according to the embodiment will be described with reference to FIGS.

[0043] The imaging device 1 according to the embodiment further includes a housing 100 and an optical member 17, as shown in FIGS.

[0044] (3.1) Housing 2 and 4, the housing 100 includes a body 101, a cover 102, and a holder 103 (see FIG. 4). Each of the body 101, the cover 102, and the holder 103 is, for example, a synthetic resin molded product.

[0045] (3.1.1) Body The body 101 has a body main body 1011 formed in a cylindrical shape with its axial direction being a first direction D1 (the vertical direction in FIG. 2). The first direction D1 is the direction in which the imaging lens 132 of the imaging unit 13 and the optical member 17 are aligned. At one end (the lower end in FIG. 2) of the body main body 1011, a flange portion 1012 that protrudes laterally (outward) is formed over the entire circumference of the body main body 1011. The body 101 is attached to the ceiling 200 by sandwiching the ceiling 200 between the flange portion 1012 of the body 101 and a mounting bracket F1 (see FIG. 2).

[0046] The body 101 accommodates the control unit 11, the communication unit 12, the imaging unit 13, the storage unit 14, the infrared receiving unit 15, and the display unit 16. That is, the imaging unit 13 is accommodated in the housing 100. More specifically, the control unit 11, the communication unit 12, the imaging element 131 of the imaging unit 13, the storage unit 14, the infrared receiving unit 15, and the display unit 16 are mounted on a first printed circuit board 181.

[0047] A second printed circuit board 182 is also accommodated inside the body 101. The second printed circuit board 182 is, for example, a glass epoxy board, similar to the first printed circuit board 181. The second printed circuit board 182 is formed, for example, in a rectangular plate shape. A plurality of electronic components 184 constituting a power supply circuit are mounted on the second printed circuit board 182. The power supply circuit includes, for example, an AC / DC converter that converts AC power supplied from an external power source (for example, a commercial power source) into DC power. The power supply circuit supplies the generated DC power to the control unit 11, the communication unit 12, the imaging element 131 of the imaging unit 13, the storage unit 14, the infrared receiving unit 15, and the display unit 16.

[0048] Also mounted on second printed circuit board 182 is a terminal block 19 including a plurality of (four in FIG. 4) connection terminals 191. Two of the four connection terminals 191 are power supply terminals for supplying AC power from an external power supply to second printed circuit board 182. The remaining two of the four connection terminals 191 are signal terminals for outputting a first communication signal and a second communication signal.

[0049] First printed circuit board 181 and second printed circuit board 182 are disposed at an interval in first direction D1. First printed circuit board 181 and second printed circuit board 182 are electrically connected via connection cable 183. As a result, DC power is supplied from second printed circuit board 182 to first printed circuit board 181, and a first communication signal and a second communication signal are transmitted from first printed circuit board 181 to second printed circuit board 182.

[0050] (3.1.2) Cover 3, the cover 102 is formed in a disk shape having a circular shape in a plan view from the first direction D1 and an outer edge curved toward the ceiling 200. The diameter (outer shape) of the cover 102 is larger than the diameter (outer shape) of the main body 1011 of the body 101 and is substantially the same as the diameter (outer shape) of the flange portion 1012 of the body 101. The cover 102 is attached to the body 101 by appropriate attachment means (e.g., screws) so as to close the lower opening of the body 101.

[0051] As shown in Fig. 3, the cover 102 has a through hole 1022 and a plurality of (four in Fig. 3) recesses 1023. The through hole 1022 is provided in the center of the cover 102 and penetrates the cover 102 in the thickness direction (direction perpendicular to the paper surface of Fig. 3). The through hole 1022 is a hole for exposing the imaging unit 13 and the plurality of display units 16. The plurality of recesses 1023 are provided at equal intervals along the circumferential direction around the through hole 1022. Each of the plurality of recesses 1023 has an exposure hole 1024 for exposing the infrared receiving unit 15. That is, each of the infrared receiving units 15 is exposed to the front side (the target space S1 side) through the exposure hole 1024 of the corresponding recess 1023 among the plurality of recesses 1023.

[0052] (3.1.3) Holder 4 and 5, the holder 103 is a holder for holding the imaging lens 132 of the imaging unit 13. The holder 103 is, for example, a truncated cone shape with both ends open in the first direction D1, and has an accommodation space S2 for accommodating an exposed portion 130 of the imaging lens 132 that is exposed on the target space S1 side. The holder 103 is disposed in front of the imaging element 131 mounted on the first printed circuit board 181 (the lower side in FIG. 4) in a state in which the holder 103 holds the imaging lens 132.

[0053] (3.2) Optical components The optical member 17 is, for example, a resin molded product made of acrylic resin. As shown in Fig. 3, the optical member 17 is formed in a disk shape having an outer edge 176 including an arc 177 of a predetermined length and a line segment 178 connecting both ends P2, P3 of the arc 177 in a plan view from a first direction D1 (a direction perpendicular to the paper surface of Fig. 3). That is, the outer edge 176 of the optical member 17 in a plan view from a direction in which the imaging lens 132 and the optical member 17 are aligned includes the arc 177 of a predetermined length and the line segment 178 connecting both ends P2, P3 of the arc 177. More specifically, the area of ​​the optical member 17 in a plan view from the first direction D1, which is defined by the outer edge 176 of the optical member 17, includes the center P1 of the arc 177 (see Fig. 3).

[0054] As described above, the optical member 17 is not symmetrical around the axis passing through the center P1 along the first direction D1. That is, the optical characteristics of the optical member 17 that refract the light beam passing through each point on the surface of the optical member 17 include a first optical characteristic and a second optical characteristic. The second optical characteristic is an optical characteristic different from the first optical characteristic. The first optical characteristic is, for example, a distribution of refraction characteristics acting on the light beam passing through each point from the center P1 toward the outer edge in parallel to the line segment 178. The second optical characteristic is, for example, a distribution of refraction characteristics acting on the light beam passing through each point from the center P1 toward the outer edge perpendicular to the line segment 178. In other words, the optical characteristics of the optical member 17 are non-axisymmetrical concentric shapes in which the optical characteristics are not constant around the axis passing through the center P1 of the arc 177. Therefore, when the aspect ratio of the imaging element 131 is not 1 (for example, when the aspect ratio is 4:3 or 16:9), it is possible to distort the optical image according to the aspect ratio of the imaging element 131.

[0055] As shown in FIG. 5 and FIG. 6, the optical member 17 has an incident surface 171 and an exit surface 172. The incident surface 171 and the exit surface 172 are aligned along the first direction D1. The incident surface 171 is, for example, a concave surface recessed toward the target space S1 side (the lower side of FIG. 5). The exit surface 172 is, for example, a plane whose normal direction is along the first direction D1. That is, the optical member 17 is a plano-concave lens. As shown in FIG. 4 and FIG. 5, the optical member 17 is disposed on the opposite side of the ceiling 200 (see FIG. 2) side with respect to the imaging unit 13, and makes the angle of view of the imaging lens 132 of the imaging unit 13 a wide angle. In addition, the optical member 17 is disposed so as to cover the accommodation space S2 of the holder 103. That is, the optical member 17 is disposed so as to cover the accommodation space S2 in which the exposed portion 130 of the imaging lens 132 exposed to the target space S1 side is accommodated.

[0056] 5 and 6, the optical member 17 further has a convex portion 173. The convex portion 173 is provided over the entire length of the arc 177. The optical member 17 is attached to the housing 100 by sandwiching the convex portion 173 over the entire length between a clamping portion 1013 provided at the tip of the body 101 and a tip surface 1031 of the holder 103, as shown in FIG.

[0057] 5, the optical member 17 further includes a first edge portion 174 and a second edge portion 175. The first edge portion 174 is a portion located on the outermost side in the second direction D2. The second direction D2 is a direction intersecting (perpendicular to) the first direction D1 in which the imaging lens 132 and the optical member 17 are aligned. The second edge portion 175 is a portion located on the inner side of the first edge portion 174 in the second direction D2 and adjacent to the first edge portion 174. More specifically, the first edge portion 174 is an outer edge portion on which the light L1 transmitted through the imaging lens 132 does not enter. The second edge portion 175 is a portion located on the outermost side of the region on which the light L1 transmitted through the imaging lens 132 enters. The thickness t2 of the second edge portion 175 in the first direction D1 is thicker than the thickness t1 of the first edge portion 174 in the first direction D1.

[0058] 4 and 5, the optical member 17 is located closer to the ceiling 200 (see FIG. 2) than the surface (lower surface) 1021 of the cover 102 when attached to the housing 100. That is, the optical member 17 does not protrude toward the target space S1 side beyond the surface 1021 of the cover 102 when attached to the housing 100. In this embodiment, the surface 1021 of the cover 102 corresponds to the tip of the housing 100 on the target space S1 side.

[0059] Furthermore, when the optical member 17 is attached to the housing 100, as shown in Figures 4 and 5, the exit surface 1321, which is the surface of the imaging lens 132 that faces the optical member 17, and the entrance surface 171, which is the surface of the optical member 17 that faces the imaging lens 132, are separated from each other in the first direction D1 (the direction in which the imaging lens 132 and the optical member 17 are aligned).

[0060] Incidentally, the optical member 17 is configured so that the angle of view becomes gentler as the image height increases. Therefore, even if the detection target is present on the outer edge of the imaging range of the imaging unit 13, it is possible to project the detection target in a large size. As a result, there is an advantage that the detection unit 111 can easily detect the detection target.

[0061] (4) Effects In the imaging device 1 according to the embodiment, the optical member 17 is disposed on the opposite side to the ceiling 200 side (i.e., the target space S1 side) of the imaging unit 13. This makes it possible to make the angle of view of the imaging lens 132 a wide angle, and as a result, it becomes possible to make the imaging range of the imaging unit 13 a wide angle.

[0062] Furthermore, according to the imaging device 1 of the embodiment, while using the same imaging lens 132, it is possible to optimize the imaging device 131 to different specifications or different imaging elements 131 by changing the presence or absence of the optical member 17 or the shape of the optical member 17.

[0063] Moreover, in the imaging device 1 according to the embodiment, the optical member 17 is disposed so as to cover the accommodation space S2 of the holder 103. This makes it possible to protect the imaging lens 132 accommodated in the accommodation space S2 and to prevent dust from entering the accommodation space S2.

[0064] In the imaging device 1 according to the embodiment, the optical member 17 is a synthetic resin molded product, which makes it possible to realize the optical member 17 at low cost and with a high degree of freedom in shape.

[0065] Furthermore, in the imaging device 1 according to the embodiment, the optical member 17 is located closer to the ceiling 200 than the tip of the housing 100 on the target space S1 side (surface 1021 of the cover 102) when attached to the housing 100. In other words, the optical member 17 does not protrude from the surface 1021 of the cover 102 when attached to the housing 100. This makes it easier to handle the imaging device 1 and enables the design of the imaging device 1 to be improved.

[0066] In the imaging device 1 according to the embodiment, the optical member 17 is configured so that the angle of view changes gradually as the image height increases. This has the advantage that even if the detection target is present on the outer edge of the imaging range of the imaging unit 13, the detection target is displayed large and can be easily detected.

[0067] In the imaging device 1 according to the embodiment, the thickness t2 of the second edge 175 in the first direction D1 is thicker than the thickness t1 of the first edge 174 in the first direction D1. This makes it possible to reduce the opening dimension of the housing 100 by utilizing the refractive effect of the optical member 17.

[0068] In addition, in the imaging device 1 according to the embodiment, the outer edge 176 of the optical member 17 includes an arc 177 of a predetermined length and a line segment 178 connecting both ends P2, P3 of the arc 177. This makes it possible to distort the optical image in accordance with the aspect ratio of the imaging element 131.

[0069] Moreover, the imaging device 1 according to the embodiment further includes a detection section 111 that detects the presence or absence of a detection target based on an image captured by the imaging section 13. This enables the detection section 111 to detect the detection target.

[0070] Furthermore, in the imaging device 1 according to the embodiment, the imaging lens 132 and the optical member 17 are spaced apart from each other in the first direction D1. This makes it possible to prevent condensation on the optical member 17 from adhering to the imaging lens 132.

[0071] In the imaging device 1 according to the embodiment, the optical axis OA1 of the imaging section 13 is oriented vertically downward. This allows the imaging section 13 to capture an image of a predetermined range oriented vertically downward.

[0072] Moreover, each of the management system 10 and the load system 20 according to the embodiment includes the above-mentioned imaging device 1. This makes it possible to make the angle of view of the imaging lens 132 a wide angle, and as a result, makes it possible to make the imaging range of the imaging unit 13 a wide angle.

[0073] (5) Variations The above-described embodiment is merely one of various embodiments of the present disclosure. The above-described embodiment can be modified in various ways depending on the design and the like as long as the object of the present disclosure can be achieved. Below, modifications of the above-described embodiment are listed. The modifications described below can be applied in appropriate combination.

[0074] The execution subject of each of the management system 10 and the load system 20 in the present disclosure includes a computer system. The computer system is mainly composed of a processor and a memory as hardware. The processor executes a program recorded in the memory of the computer system, thereby realizing the function of each of the execution subjects of the management system 10 and the load system 20 in the present disclosure. The program may be pre-recorded in the memory of the computer system, may be provided through an electric communication line, or may be provided by being recorded in a non-transitory recording medium such as a memory card, an optical disk, or a hard disk drive that can be read by the computer system. The processor of the computer system is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or a large scale integrated circuit (LSI). The integrated circuits such as IC or LSI referred to here are called by different names depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Furthermore, a field-programmable gate array (FPGA) that is programmed after the manufacture of the LSI, or a logic device that can reconfigure the connection relationship inside the LSI or reconfigure the circuit partition inside the LSI, can also be adopted as a processor. The electronic circuits may be integrated in one chip or distributed among multiple chips. The chips may be integrated in one device or distributed among multiple devices. The computer system referred to here includes a microcontroller having one or more processors and one or more memories. Thus, the microcontroller is also composed of one or more electronic circuits including a semiconductor integrated circuit or a large-scale integrated circuit.

[0075] Furthermore, it is not essential for the management system 10 and the load system 20 that multiple functions in each of the management system 10 and the load system 20 are concentrated in one housing, and each of the components of the management system 10 and the load system 20 may be distributed across multiple housings. Furthermore, at least some of the functions in each of the management system 10 and the load system 20 may be realized by the cloud (cloud computing) or the like.

[0076] Conversely, in the above-described embodiment, some of the functions distributed between the imaging device 1 and the management device 2 may be integrated into one housing. Also, in the above-described embodiment, some of the functions distributed between the imaging device 1 and the load device 3 may be integrated into one housing.

[0077] In the above embodiment, the load device 3 is configured to be controlled via the control device 4. In contrast, the load device 3 may be configured to be directly controlled by, for example, the control unit 11 of the imaging device 1, or may be configured to be directly controlled by the control unit 21 of the management device 2.

[0078] In the above-described embodiment, the load device 3 includes only the lighting fixture 30, but the load device 3 may include, for example, a control device 4 in addition to the lighting fixture 30. That is, the load device 3 may include the lighting fixture 30 as a load and the control device 4 that controls the lighting fixture 30.

[0079] In the above embodiment, the imaging device 1 includes both the imaging section 13 and the infrared receiving section 15, but the infrared receiving section 15 may be omitted.

[0080] In the above-described embodiment, the detection target is a person, but the detection target is not limited to a person and may be any moving object.

[0081] In the above embodiment, the structure 200 of the target space S1 is the ceiling of the target space S1, but is not limited thereto. The structure 200 of the target space S1 may be a beam or a frame of the target space S1. Furthermore, the imaging device 1 may be directly attached to the structure 200 such as a ceiling, beam, or frame, or may be indirectly attached via a separate member.

[0082] (Aspect) The present specification discloses the following aspects.

[0083] The imaging device (1) according to the first aspect is an imaging device (1) that is attached to a structure (200) in a target space (S1) and has a function of detecting a detection target in the target space (S1). The imaging device (1) includes a housing (100), an imaging unit (13), and an optical member (17). The imaging unit (13) is attached to the housing (100) and has an imaging lens (132) including a plurality of single lenses. The optical member (17) is disposed on the opposite side of the imaging unit (13) from the structure (200) side, and makes the angle of view of the imaging lens (132) a wide angle.

[0084] According to this embodiment, the optical member (17) enables the angle of view of the imaging lens (132) to be wide-angled, and as a result, the imaging range of the imaging section (13) can be made wide-angled.

[0085] In the imaging device (1) of the second aspect, in the first aspect, the optical member (17) is arranged so as to cover the storage space (S2) in which an exposed portion (130) of the imaging lens (132) that is exposed on the target space (S1) side is stored.

[0086] According to this embodiment, by covering the accommodation space (S2) with the optical member (17), it is possible to protect the imaging lens (132) and prevent dust from entering the accommodation space (S2).

[0087] In the imaging device (1) according to the third aspect, in the first or second aspect, the optical member (17) is a resin molded product.

[0088] According to this embodiment, it is possible to realize an optical member (17) that is low cost and has a high degree of freedom in shape.

[0089] In the imaging device (1) according to the fourth aspect, in any one of the first to third aspects, the optical member (17) is located closer to the structure (200) than the tip (1021) of the housing (100) on the target space (S1) side when attached to the housing (100).

[0090] According to this embodiment, the imaging device (1) can be easily handled, and the design of the imaging device (1) can be improved.

[0091] In the imaging device (1) according to the fifth aspect, in the first to fourth aspects, the optical member (17) is configured so that the angle of view changes gradually as the image height increases.

[0092] According to this aspect, even if the detection target is present on the outer edge of the imaging range of the imaging section (13), the detection target is displayed large, which has the advantage that the detection target can be easily detected.

[0093] In the imaging device (1) according to the sixth aspect, in any one of the first to fifth aspects, the optical member (17) has a first edge portion (174) and a second edge portion (175). The first edge portion (174) is located on the outermost side in a second direction (D2) intersecting with a first direction (D1) in which the imaging lens (132) and the optical member (17) are aligned. The second edge portion (175) is located on the inner side of the first edge portion (174) in the second direction (D2) and is adjacent to the first edge portion (174). The thickness (t2) of the second edge portion (175) in the first direction (D1) is thicker than the thickness (t1) of the first edge portion (174) in the first direction (D1).

[0094] According to this embodiment, by utilizing the refractive effect of the optical member (17), it is possible to reduce the size of the opening of the housing (100).

[0095] In the imaging device (1) according to the seventh aspect, in any one of the first to sixth aspects, an outer edge (176) of the optical member (17) in a plan view from a direction in which the imaging lens (132) and the optical member (17) are aligned includes an arc (177) of a predetermined length and a line segment (178) connecting both ends (P2, P3) of the arc (177).

[0096] According to this embodiment, it is possible to distort the optical image in accordance with the aspect ratio of the imaging element (131).

[0097] In the imaging device (1) according to an eighth aspect, in any one of the first to seventh aspects, the optical characteristics of the optical member (17) include a first optical characteristic and a second optical characteristic. The second optical characteristic is different from the first optical characteristic.

[0098] According to this embodiment, it is possible to distort the optical image in accordance with the aspect ratio of the imaging element (131).

[0099] In the imaging device (1) according to the ninth aspect, in the first to seventh aspects, the optical characteristics from the center (P1) included in the optical axis (OA1) of the optical member (17) toward the outer edge (176) of the optical member (17) have an asymmetric portion in a cross section including the optical axis (OA1).

[0100] According to this embodiment, it is possible to distort the optical image in accordance with the aspect ratio of the imaging element (131).

[0101] The imaging device (1) according to a tenth aspect is any one of the first to ninth aspects, and further includes a detection section (111). The detection section (111) detects the presence or absence of a detection target based on an image captured by the imaging section (13).

[0102] According to this embodiment, it becomes possible for the detection unit (111) to detect the detection target.

[0103] In the imaging device (1) according to the eleventh aspect, in any one of the first to tenth aspects, a surface (1321) of the imaging lens (132) facing the optical member (17) and a surface (171) of the optical member (17) facing the imaging lens (132) are separated from each other in the direction in which the imaging lens (132) and the optical member (17) are arranged.

[0104] According to this embodiment, it is possible to prevent condensation formed on the optical member (17) from adhering to the imaging lens (132).

[0105] In the imaging device (1) according to the twelfth aspect, in any one of the first to eleventh aspects, when attached to the structure (200), the optical axis (OA1) of the imaging section (13) faces vertically downward.

[0106] According to this embodiment, it becomes possible for the imaging section (13) to capture an image of a predetermined range on the vertically lower side.

[0107] A management system (10) according to a thirteenth aspect includes the imaging device (1) according to the tenth aspect and a management device (2). The management device (2) acquires information related to a detection result of the detection unit (111).

[0108] According to this embodiment, the optical member (17) enables the angle of view of the imaging lens (132) to be wide-angled, and as a result, the imaging range of the imaging section (13) can be made wide-angled.

[0109] A load system (20) according to a fourteenth aspect includes the imaging device (1) according to the tenth aspect, and a load device (3). The load device (3) operates based on a detection result of the detection unit (111).

[0110] According to this embodiment, the optical member (17) enables the angle of view of the imaging lens (132) to be wide-angled, and as a result, the imaging range of the imaging section (13) can be made wide-angled.

[0111] The configurations according to the second to twelfth aspects are not essential for the imaging device (1) and may be omitted as appropriate. [Explanation of symbols]

[0112] 1. Imaging device 2 Management device 3 Load device 10 Management Systems 13 Imaging unit 17 Optical components 20 Resistance System 100 Case 111 Detection unit 130 Exposed part 132 Imaging Lens 171 Incidence surface (opposite surface) 174 First edge 175 Second edge 176 Outer Edge 177 Arc 178 Line Segments 200 structures 1021 Surface (tip) 1321 Exit surface (opposing surface) D1 1st direction D2 2nd direction OA1 Optical axis P2,P3 end S1 Target space S2 Containment Space t1,t2 thickness

Claims

1. An imaging device that is attached to a structure of a target space and has a function of detecting a detection target in the target space, A housing and an imaging unit having an imaging lens including a plurality of single lenses and housed in the housing; an optical member disposed on the opposite side of the imaging unit from the structure side and configured to widen the angle of view of the imaging lens; Imaging device.

2. The optical member is disposed so as to cover an accommodation space in which an exposed portion of the imaging lens that is exposed to the target space side is accommodated. The imaging device according to claim 1 .

3. The optical member is a resin molded product. The imaging device according to claim 1 .

4. the optical member is located on the structure side relative to the tip of the housing on the target space side when attached to the housing; The imaging device according to claim 1 .

5. The optical member is configured so that the angle of view changes gradually as the image height increases. The imaging device according to claim 1 .

6. The optical member is a first edge portion located outermost in a second direction intersecting a first direction in which the imaging lens and the optical member are aligned; a second edge portion located inside the first edge portion in the second direction and adjacent to the first edge portion, The thickness of the second edge portion in the first direction is greater than the thickness of the first edge portion in the first direction. The imaging device according to claim 1 .

7. The outer edge of the optical member in a plan view from a direction in which the imaging lens and the optical member are arranged is An arc of a predetermined length; A line segment connecting both ends of the arc, The imaging device according to claim 1 .

8. The optical properties of the optical member are as follows: A first optical characteristic; and and a second optical characteristic different from the first optical characteristic. The imaging device according to claim 1 .

9. the optical characteristic from the center included in the optical axis of the optical member toward the outer edge of the optical member has an asymmetric portion in a cross section including the optical axis; The imaging device according to claim 1 .

10. A detection unit that detects the presence or absence of the detection target based on an image captured by the imaging unit, The imaging device according to claim 1 .

11. a surface of the imaging lens facing the optical member and a surface of the optical member facing the imaging lens are separated from each other in a direction in which the imaging lens and the optical member are arranged. The imaging device according to claim 1 .

12. When attached to the structure, the optical axis of the imaging unit faces downward in the vertical direction. The imaging device according to claim 1 .

13. The imaging device according to claim 10; A management device that acquires information regarding the detection result of the detection unit. Management system.

14. The imaging device according to claim 10; A load device that operates based on the detection result of the detection unit. Load system.

Images