Optical device

Abstract

This optical device is provided with: a light-emitting unit which has a plurality of light-emitting elements, irradiates light to each of a plurality of divided regions in which an irradiation region is divided, and emits light to be irradiated onto an object; a light-receiving unit having a plurality of light-receiving elements and receiving reflected light of the light irradiated on the object; and a light emission control section that controls emission of light irradiated onto the divided region included in a target region corresponding to an irradiation region in a region where a light receiving region of the reflected light on the target does not overlap with the irradiation region of light that has been irradiated onto the target.

Description

TECHNICAL FIELD

[0001] The present application relates to an optical device. BACKGROUND

[0002] There is known a detection device that includes a light emitting section that includes a plurality of light emitting elements and is capable of independently driving a plurality of regions, and a light receiving section that includes a plurality of light receiving elements that receive reflected light of light that has been irradiated onto an object from the light emitting section (for example, see Patent Literature 1). In such a device, since the configuration positions of the light emitting section and the light receiving section are different, there can be a shift between the irradiation region of the light that has been irradiated onto the object and the light receiving region of the reflected light received by the light receiving section.

[0003] Patent Literature 1: Japanese Patent Application Laid-Open No. 2023-113029

[0004] When there is a shift between the light receiving region and the irradiation region, energy is wasted in a portion of the irradiation region that exceeds the light receiving region. Also, when a light source that irradiates the irradiation region irradiates light according to each of the divided regions after the irradiation region is divided, the proportion (number or area) of the divided regions that are affected by the shift varies depending on the position at which the shift between the light receiving region and the irradiation region occurs and the shape of the divided regions. SUMMARY

[0005] An object of the present application is to suppress the influence of a shift caused by the position at which the shift between the light receiving region and the irradiation region occurs and the shape of the divided regions.

[0006] The application described in Aspect 1 is an optical device that includes a light emitting section that has a plurality of light emitting elements and irradiates light onto each of a plurality of divided regions into which an irradiation region is divided and emits light that has been irradiated onto an object, a light receiving section that has a plurality of light receiving elements and receives reflected light of the light that has been irradiated onto the object, and a light emitting control section that controls emission of light that has been irradiated onto the divided regions in a region in which a light receiving region on the object of the reflected light and an irradiation region of the light that has been irradiated onto the object do not overlap, the divided regions being included in an object region corresponding to the irradiation region.

[0007] The application described in Aspect 2 is the optical device described in Aspect 1, in which the light emitting control section controls emission of light that has been irradiated onto the divided regions included in the object region in a different manner from control of emission of light that has been irradiated onto the divided regions not included in the object region.

[0008] The application described in Aspect 3 is the optical device described in Aspect 2, in which the light emitting control section, as control of the emission of the light, extinguishes the light that has been irradiated onto the divided regions.

[0009] The application described in the item 4 is the optical device described in any one of the items 1 to 3, wherein the shape of the divided region is determined so that a ratio of a total area of the divided region included in the object region to an area of the object region increases.

[0010] The application described in the item 5 is the optical device described in the item 4, wherein the shape of the divided region is rectangular, and the light emitting section and the light receiving section are arranged in a short side direction of the rectangle.

[0011] The application described in the item 6 is the optical device described in any one of the items 1 to 5, further comprising a detection section that detects the object region, wherein the light emitting control section controls emission of light to the detected object region.

[0012] The application described in the item 7 is the optical device described in the item 6, wherein the detection section further detects the divided region included in the detected object region, and the light emitting control section controls emission of light to the detected divided region.

[0013] Effects of the Invention

[0014] According to the item 1 of the present application, it is possible to suppress the influence of the shift caused by the shift position between the light receiving region and the irradiation region and the shape of the divided region.

[0015] According to the item 2 of the present application, since the light emission is controlled for each divided region included in the object region, it is possible to suppress the influence of the shift caused by the shape of the divided region.

[0016] According to the item 3 of the present application, since it is possible to extinguish the light irradiated to the object region, it is possible to suppress unnecessary energy consumption.

[0017] According to the item 4 of the present application, if the area of the divided region included in the object region increases, the area of the divided region that spans the object region and the light receiving region relatively decreases, so it is possible to suppress the influence of the shift caused by the shape of the divided region.

[0018] According to the item 5 of the present application, it is possible to include the divided region in the object region without waste.

[0019] According to the item 6 of the present application, it is not necessary for a person to visually determine the object region.

[0020] According to the item 7 of the present application, it is not necessary for a person to visually determine the divided region. BRIEF DESCRIPTION OF DRAWINGS

[0021] The embodiments of the present application are described in detail below with reference to the following drawings.

[0022] Figure 1 is a diagram showing an example of the overall structure of a TOF camera system including a TOF camera device as a constituent element, the TOF camera device being applied with the optical device of the present embodiment;

[0023] Figure 2 is a diagram showing an example of the hardware structure of a TOF camera device applied with the present embodiment;

[0024] Figure 3 is a diagram showing an example of the functional structure of a control section of a TOF camera device;

[0025] Figure 4 is a diagram showing specific examples of an object region and a divided region;

[0026] Figure 5 In the present embodiment, Figure 5 (A) of FIG. 10 is a diagram showing a specific example of a divided region included in an object region, which is detected by a TOF camera device. Figure 5 (B) of FIG. 10 is a diagram showing another specific example of a divided region;

[0027] Figure 6 (A) of FIG. 11 and Figure 6 (B) of FIG. 11 are diagrams showing specific examples in which the light emitting section and the light receiving section of a TOF camera device are arranged in the up-and-down direction;

[0028] Figure 7 (A) of FIG. 12 and Figure 7 (B) of FIG. 12 are diagrams showing specific examples in which a plurality of light emitting sections are arranged in a TOF camera device.

[0029] Symbol Explanation

[0030] 1 - TOF camera system, 10 - TOF camera device, 11 - control section, 17 - light emitting section, 18 - light receiving section, 30 - user terminal, 90 - network, 111 - acquisition section, 112 - management section, 113 - detection section, 114 - light emission control section, 115 - transmission control section, 200 - object, 210 - irradiation region, 220 - light receiving region, 211 - object region, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302 - divided region. Detailed Implementation

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0032] <Structure of TOF Camera System 1>

[0033] Figure 1 This is a diagram showing an example of the overall structure of a TOF camera system 1, which includes a TOF camera device 10 as a component, and the TOF camera device 10 is an optical device that applies this embodiment.

[0034] The TOF camera system 1 is constructed by connecting the TOF camera device 10 and the user terminal 30 via a network 90. ​​The network 90 is, for example, a LAN (Local Area Network) or the Internet.

[0035] [TOF camera device 10]

[0036] A Time-of-Flight (TOF) camera device 10 is a camera device that visualizes the distance between itself and an object by measuring the time of flight of light (e.g., infrared light). The TOF camera device 10 has a light-emitting unit 17 and a light-receiving unit 18. The light-emitting unit 17 emits light that illuminates the object, and the light-receiving unit 18 receives the reflected light from the light-emitting unit 17 that has illuminated the object. The TOF camera device 10 measures the time required for the light illuminating the object to return from the object, calculates the distance based on this time, and visualizes it. While conventional cameras can only obtain two-dimensional information about the object, the TOF camera device 10, by including depth information (in the direction towards the object), is able to obtain three-dimensional information. Further details regarding the structure and processing of the TOF camera device 10 will be described later.

[0037] [User Terminal 30]

[0038] User terminal 30 is an information processing device such as a personal computer, tablet computer, or smartphone operated by a user utilizing the TOF camera system 1. User terminal 30 can execute applications that utilize the TOF camera system 1. User terminal 30 can acquire various information transmitted from the TOF camera device 10 and external sources, and can perform various processing operations. Furthermore, user terminal 30 can transmit various information to the TOF camera device 10 and external sources, and can enable the TOF camera device 10 to perform various processing operations.

[0039] The configuration of the TOF camera system 1 described above is an example, and as long as the function of realizing the processing described above is possessed as a whole of the TOF camera system 1. Therefore, in the function of realizing the processing described above, a part or all thereof can be shared or cooperatively realized within the TOF camera system 1. That is, a part or all of the function of the TOF camera device 10 constituting the TOF camera system 1 can be provided as a function of another information processing device (for example, the user terminal 30), and a part or all of the function of another information processing device can be provided as a function of the TOF camera device 10. Also, a part or all of the respective functions of the devices constituting the TOF camera system 1, such as the TOF camera device 10, can be transferred to another server or the like not illustrated. Thereby, the processing as a whole of the TOF camera system 1 is promoted, and it is also possible to complement the processing to each other.

[0040] <Hardware Configuration>

[0041] Figure 2 Fig. 1 is a diagram showing an example of a hardware configuration of the TOF camera device 10 to which the present embodiment is applied.

[0042] The TOF camera device 10 has a control section 11, a memory 12, a storage section 13, a communication section 14, an operation section 15, a display section 16, a light emitting section 17, and a light receiving section 18. These sections are connected by a data bus, an address bus, a PCI (Peripheral Component Interconnect) bus, or the like.

[0043] The control section 11 is a processor that controls the function of the TOF camera device 10 by executing various software such as an OS (basic software) or application software. In the present embodiment, each processing is executed by an arbitrary computer. Also, the arbitrary computer can execute these processes by a processor as hardware, a program as software, or a combination thereof. At this time, the processor is configured to execute various processes in the present embodiment in cooperation with the program, and can function as each unit or each means in the present embodiment. Also, the execution order of the processing by the processor is not limited to the order described, and can be appropriately changed. The arbitrary computer can be a general-purpose computer, a special-purpose computer, a workstation, or another system capable of executing each processing.

[0044] The processor can also be constituted by one or a plurality of hardware of which the kind is not limited. For example, the processor can be constituted by a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a programmable logic device such as an FPGA (Field Programmable Gate Array), an ASIC (Application Specific Integrated Circuit) for executing a specific processing, a GPU (Graphic Processing Unit), or an NPU (Neural Processing Unit) or the like.

[0045] Also, the kind of the hardware can be a combination of different kinds of hardware. In a case where a plurality of hardware is constituted to execute one or a plurality of processes of a certain processor, the plurality of hardware can exist in physically separate devices from each other, or can exist in the same device. Also, in any of the embodiments, the order of each process performed by the processor is not limited to the above-described order, and can be changed as appropriate. In addition, the hardware is constituted by a circuitry or the like in which circuit elements such as semiconductor elements are combined.

[0046] Further, the program can be software such as firmware or microcode. Also, the program can be, for example, a program module group, each function of which can be realized by a processor constituted to execute each function. The program can be a program code or a plurality of code segments stored in one or a plurality of non-transitory computer readable media such as storage media or other storage devices. The program can be divided and stored in a plurality of non-transitory computer readable media (existing in physically separate devices from each other).

[0047] The program code or the code segments can represent any combination of steps, functions, procedures, routines, subroutines, modules, software packages, classes, or instructions, data structures, or program statements. The program code or the code segments can connect with other code segments or hardware circuits by receiving information, data, arguments, parameters, or contents of a memory.

[0048] The memory 12 is a storage area for storing various software and data used when the various software is executed, and is used as a work area at the time of operation. The memory 12 is constituted by, for example, a RAM (Random Access Memory) or the like.

[0049] The storage section 13 is a storage area for storing input data to various software and output data from various software, and the like. The storage section 13 is constituted by, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive), a semiconductor memory, or the like for storing programs, various setting data, and the like. A database for storing various information is provided in the storage section 13.

[0050] The communication section 14 performs transmission and reception of data between the user terminal 30 and the outside via the network 90. The operation section 15 is constituted by, for example, a keyboard, a mouse, mechanical buttons, switches, and the like, and accepts input operations.

[0051] The operation section 15 also includes a touch sensor that constitutes a touch panel integrally with the display section 16.

[0052] The display section 16 is constituted by, for example, a liquid crystal display or an organic EL (Electro Luminescence) display for displaying information, and displays images, text data, and the like. A user interface or the like is displayed on the display section 16.

[0053] The light emitting section 17 has a plurality of light emitting elements, and emits light that is irradiated onto an object. An irradiation region of the object to which light of the light emitting section 17 is irradiated is divided into a plurality of divided regions, and light is irradiated to each of the divided regions.

[0054] The light receiving section 18 has a plurality of light receiving elements, and receives reflected light of the light of the light emitting section 17 that has been irradiated onto an object.

[0055] <Function Structure>

[0056] Figure 3 is a diagram showing an example of a function structure of the control section 11 of the TOF camera device 10.

[0057] In the control section 11 of the TOF camera device 10, the acquisition section 111, the management section 112, the detection section 113, the light emitting control section 114, and the transmission control section 115 function.

[0058] The acquisition section 111 acquires various information.

[0059] The management section 112 manages various information by storing the information in a database of the storage section 13 (see Figure 2 ). For example, the management section 112 manages information such as measurement results of distances to objects by storing the information in the database respectively.

[0060] In areas where the reflected light from the light-emitting portion 17 that has been irradiated onto the object does not overlap with the light-receiving area on the object and the irradiation area of ​​the light-emitting portion 17 that has been irradiated onto the object, the detection unit 113 detects the area corresponding to the irradiation area (hereinafter referred to as the "object area"). Furthermore, the detection unit 113 detects the segmented areas included in the detected object area.

[0061] The light emission control unit 114 controls the emission of light from the light emission unit 17. For example, as a control of the light emission from the light emission unit 17, the light emission control unit 114 controls the emission of light that has been irradiated onto the target area detected by the detection unit 113. Furthermore, the light emission control unit 114 controls the emission of light that irradiates onto the segmented areas included in the target area. For example, the light emission control unit 114 controls the emission of light that irradiates onto the segmented areas included in the target area in a manner different from controlling the emission of light that irradiates onto segmented areas not included in the target area. Specifically, as a control of the emission of light that irradiates onto the segmented areas included in the target area, the light emission control unit 114 extinguishes the light irradiating onto the segmented areas.

[0062] The transmission control unit 115 transmits data via the communication unit 14 (see reference). Figure 2 The transmission control unit 115 controls the transmission of various information to the user terminal 30. For example, the transmission control unit 115 controls the transmission of information such as the measurement results of the distance to the object to the user terminal 30.

[0063] <Specific examples>

[0064] Figure 4 This is a diagram showing specific examples of object regions and segmented regions.

[0065] exist Figure 4 The image shows a TOF camera device 10 having a light-emitting part 17 and a light-receiving part 18. The light-emitting part 17 emits light that illuminates an object 200, and the light-receiving part 18 receives the reflected light from the light-emitting part 17 that has illuminated the object 200. Furthermore, in Figure 4 The image shows the illumination area 210 of the light emitting part 17 illuminating the object 200 from the TOF camera device 10, and the light receiving area 220 of the reflected light on the object 200.

[0066] like Figure 4 As shown, the position of the light-emitting unit 17 of the TOF camera device 10 is offset from the position of the light-receiving unit 18 in the left-right direction. Therefore, an offset occurs between the illumination area 210 of the light emitted by the light-emitting unit 17 that has illuminated the object 200 and the light-receiving area 220 of the reflected light received by the light-receiving unit 18. As a result, as... Figure 4As shown, in the object 200, there are a region in which the irradiation region 210 and the light-receiving region 220 overlap and a region in which they do not overlap.

[0067] Here, in the region in which the irradiation region 210 and the light-receiving region 220 do not overlap, the detection section 113 of the TOF camera device 10 detects the object region 211 corresponding to the irradiation region 210. Since the light irradiated onto the object region 211 is light that is not received by the light-receiving section 18 even if it is reflected on the object 200, energy is wasted.

[0068] Figure 5 (A) of FIG. 10 is a diagram showing a specific example of the divided regions included in the object region, which are detected by the TOF camera device 10. In addition, in Figure 5 The face (the face on which the light-emitting section 17 and the light-receiving section 18 are arranged) of the object 200 opposing the TOF camera device 10 is shown in the bubble frame of (A) of FIG. 10.

[0069] In Figure 5 (A) of FIG. 10 is a diagram showing a specific example of the divided regions included in the object region 211, which are detected by the TOF camera device 10. The irradiation region 210 of the light irradiated from the TOF camera device 10 onto the object 200 is divided into 2 rows and 6 columns, and thus divided into a total of 12 rectangular divided regions 231 to 242.

[0070] Of the 12 divided regions 231 to 242, the divided regions 231 to 240 partially overlap the light-receiving region 220, but the divided regions 241 and 242 do not overlap the light-receiving region 220 and are included in the object region 211. Thus, the divided regions 241 and 242 are detected by the TOF camera device 10 as divided regions included in the object region 211.

[0071] If the divided regions 241 and 242 included in the object region 211 are detected, the TOF camera device 10 extinguishes the light irradiated onto the divided regions 241 and 242. Thus, of the divided regions 231 to 242, the light is irradiated only onto the divided regions 231 to 240 partially overlapping the light-receiving region 220.

[0072] In Figure 5 In the example shown in (A) of FIG. 10, the light-emitting section 17 and the light-receiving section 18 of the TOF camera device 10 are arranged in line in the left-right direction. At this time, the shift between the irradiation region 210 and the light-receiving region 220 is likely to become large in the left-right direction. Thus, by shortening the length of each of the divided regions 231 to 242 in the left-right direction, the ratio of the total area of the divided regions to the area of the object region 211 can be increased with a small increase in the length compared to the case in which the length is long.

[0073] In contrast, we will explain the case where the length of the rectangular division region in the left-right direction is longer than its length in the up-down direction.

[0074] Figure 5 Figure (B) is a diagram illustrating another specific example of a segmented region. Additionally, in Figure 5 The bubble box in (B) shows the surface opposite the object 200 of the TOF camera device 10 (the surface where the light-emitting part 17 and the light-receiving part 18 are arranged).

[0075] exist Figure 5 (B) shows an example where the illumination area 210 of the light emanating from the TOF camera device 10 onto the object 200 is divided into 6 rows and 2 columns, i.e., divided into a total of 12 rectangular segments 251 to 262. Figure 5 In example (B), the rectangular segmented region is longer in the left-right direction than in the up-down direction. In this case, segmented regions 251 to 262 partially overlap with the light-receiving region 220, therefore there is no segmented region included in the object region 211. Thus, there is no segmented region where the TOF camera device 10 is turned off.

[0076] Figure 5 (A) and Figure 6 In example (B), since the light-emitting portion 17 and the light-receiving portion 18 of the TOF camera device 10 are arranged in the left-right direction, as described above, the offset between the illumination area 210 and the light-receiving area 220 tends to increase in the left-right direction. However, the arrangement of the light-emitting portion 17 and the light-receiving portion 18 of the TOF camera device 10 is not limited to this, and various other arrangements exist.

[0077] <Variation Example 1>

[0078] Figure 6 (A) and Figure 6 Figure (B) shows a specific example of a TOF camera device 10 with its light-emitting section 17 and light-receiving section 18 arranged in a vertical direction. Additionally, in Figure 6 (A) and Figure 6 The bubble box in (B) shows the surface opposite the object 200 of the TOF camera device 10 (the surface where the light-emitting part 17 and the light-receiving part 18 are arranged).

[0079] exist Figure 6 (A) shows a specific example of the segmented regions included in the object region 211 detected by the TOF camera device 10. The illumination region 210 of the light irradiated from the TOF camera device 10 onto the object 200 is divided into 6 rows and 2 columns, and thus divided into a total of 12 segmented regions 271 to 282.

[0080] In the divided areas 271 to 282, the divided areas 273 to 282 partially overlap with the light-receiving area 220, but the divided areas 271 and 272 do not overlap with the light-receiving area 220 and are included in the target area 211. Therefore, the divided areas 271 and 272 are detected as the divided areas included in the target area 211 by the TOF camera device 10.

[0081] If the divided areas 271 and 272 included in the target area 211 are detected, the TOF camera device 10 turns off the light irradiated onto the divided areas 271 and 272. Thus, in the divided areas 271 to 282, the light is irradiated only to the divided areas 273 to 282 partially overlapping with the light-receiving area 220.

[0082] In Figure 6 In the example shown in (A) of FIG. 20, the light-emitting portion 17 and the light-receiving portion 18 of the TOF camera device 10 are arranged in the up-down direction. At this time, the shift between the irradiation area 210 and the light-receiving area 220 is likely to be large in the up-down direction. Therefore, by shortening the length of each of the divided areas 271 to 282 in the up-down direction, the ratio of the total area of the divided areas to the area of the target area 211 can be increased with a small increase in the number of divided areas to be turned off, as compared with the case where the length is long.

[0083] In contrast, a case where the length of the divided areas in the left-right direction is shorter than the length in the up-down direction is described.

[0084] In Figure 6 An example in which the irradiation area 210 of the light irradiated from the TOF camera device 10 to the object 200 is divided into 2 rows and 6 columns, that is, into a total of 12 divided areas 291 to 302 is shown in (B) of FIG. 21. In Figure 7 In the example of (B) of FIG. 21, the divided areas having a rectangular shape are shorter in the left-right direction than in the up-down direction. At this time, the divided areas 291 to 302 all partially overlap with the light-receiving area 220, and thus there are no divided areas included in the target area 211. Therefore, there are no divided areas to be turned off by the TOF camera device 10.

[0085] <Variant Examples 2 and 3>

[0086] Figure 7 (A) of FIG. 20 and (B) of FIG. 21 are diagrams showing specific examples in which a plurality of light-emitting portions 17 are arranged in the TOF camera device 10. In addition, in (A) of FIG. 20 and (B) of FIG. 21, the face (the face on which the light-receiving portion 18 and the plurality of light-emitting portions 17 are arranged) of the TOF camera device 10 facing the object 200 is shown in a bubble frame. Figure 7 Figure 7 Figure 7 In (A) of FIG. 20 and (B) of FIG. 21, the face (the face on which the light-receiving portion 18 and the plurality of light-emitting portions 17 are arranged) of the TOF camera device 10 facing the object 200 is shown in a bubble frame. ​​

[0087] In Figure 7 (A) of FIG. 10, a specific example (modification example 2) in which the four light emitting sections 17 are arranged close to each other is shown. In relation to this, in Figure 7 (B) of FIG. 10, a specific example (modification example 3) in which the four light emitting sections 17 are arranged apart from the example of Figure 7 (A) is shown.

[0088] As shown in Figure 7 (A) and Figure 7 (B), if the irradiation region 210 of Figure 7 (A) is compared with the irradiation region 210 of Figure 7 (B), since the four light emitting sections 17 of Figure 1 (B) are arranged apart, the irradiation region 210 of Figure 2 (B) is larger. At this time, the region in which the irradiation region 210 and the light receiving region 220 do not overlap becomes larger, and thus the offset between the irradiation region 210 and the light receiving region 220 becomes larger. Therefore, when there are a plurality of light emitting sections 17, it is preferable to arrange the plurality of light emitting sections 17 close to each other, for example, as shown in Figure 3 (A).

[0089] <Other Embodiments>

[0090] The present embodiment has been described above, but the present application is not limited to the above-described embodiment. Also, the effects based on the present application are not limited to the effects described in the above-described embodiment. For example, the structure of the TOF camera system 1 shown in Figure 1 , the hardware structure of the TOF camera device 10 shown in Figure 3 are merely examples for achieving the purpose of the present application, and are not particularly limited.

[0091] Also, the functional structure of the TOF camera device 10 shown in Figures 4 to 7 is merely an example, and is not particularly limited. As long as the TOF camera system 1 shown in ​ has a function capable of performing the above-described processing as a whole, the functional structure used in order to achieve the function is not limited to the example shown in ​ . Also, ​ the specific examples shown in each are merely one example, and are not particularly limited.

[0092] Also, in the above-described embodiment, for example, the structure in which the detection section 113 of the TOF camera device 10 detects the object region and the division region, but is not limited thereto. For example, the user can visually determine the object region and the division region.

[0093] Also, in the above-described embodiment, the waste of energy is suppressed by extinguishing the light irradiated onto the divided region included in the target region, but it is not necessarily extinguished. For example, the waste of energy can be suppressed by reducing the output of the light irradiated onto the divided region included in the target region.

[0094] (Addendum) (1)

[0096] An optical device includes:

[0097] a light emitting section having a plurality of light emitting elements and irradiating light to each of divided regions into which an irradiation region is divided and emitting the light irradiated onto an object;

[0098] a light receiving section having a plurality of light receiving elements and receiving reflected light of the light having been irradiated onto the object; and

[0099] a light emitting control section controlling emission of the light irradiated onto the divided region included in a target region corresponding to the irradiation region in a region in which the reflected light on a light receiving region on the object and the irradiation region of the light having been irradiated onto the object do not overlap. (2)

[0101] The optical device according to (1), wherein

[0102] the light emitting control section controls the emission of the light irradiated onto the divided region included in the target region in a different manner from the emission of the light irradiated onto the divided region not included in the target region. (3)

[0104] The optical device according to (2), wherein

[0105] the light emitting control section extinguishes the light irradiated onto the divided region as the control of the emission of the light. (4)

[0107] The optical device according to any one of (1) to (3), wherein

[0108] a shape of the divided region is determined so that a ratio of a total area of the divided region included in the target region to an area of the target region increases. (5)

[0110] The optical device according to (4), wherein

[0111] the shape of the divided region is a rectangular shape, and the light emitting section and the light receiving section are arranged along a short side direction of the rectangular shape. (6)

[0113] The optical device according to any one of (1) to (5), further comprising a detection unit that detects the target region,

[0114] The light emission control unit controls emission of light onto the detected target region. (7)

[0116] The optical device according to (6), wherein

[0117] The detection unit further detects the divided region included in the detected target region,

[0118] The light emission control unit controls emission of light onto the detected divided region.

[0119] According to (1) of the present application, it is possible to suppress the influence of the shift due to the position of the shift between the light-receiving region and the irradiation region and the shape of the divided region.

[0120] According to (2) of the present application, since the light emission is controlled for each divided region included in the target region, it is possible to suppress the influence of the shift due to the shape of the divided region.

[0121] According to (3) of the present application, since it is possible to extinguish the light irradiated to the target region, it is possible to suppress unnecessary energy consumption.

[0122] According to (4) of the present application, if the area of the divided region included in the target region increases, the area of the divided region that straddles the target region and the light-receiving region relatively decreases, so it is possible to suppress the influence of the shift due to the shape of the divided region.

[0123] According to (5) of the present application, it is possible to include the divided region in the target region without waste.

[0124] According to (6) of the present application, it is not necessary for a person to visually determine the target region.

[0125] According to (7) of the present application, it is not necessary for a person to visually determine the divided region.

[0126] The above-described embodiments of the present application are provided for the purpose of illustration and description. They are not intended to limit the present application in any way. Further, the present application is not limited to the disclosed embodiments but can be practiced with modification and alteration within the scope of the present application. Accordingly, the specification and drawings are to be regarded as illustrative in nature and not as restrictive. Other embodiments will occur to those skilled in the art upon consideration of the specification and drawings. The embodiments of the present application are only exemplary and do not limit the present application according to the scope of the patent and its equivalents.

Claims

1. An optical device comprising: The light-emitting part has multiple light-emitting elements and irradiates light into each of the multiple segmented regions into which the irradiation area is divided, and emits light that irradiates the object. The light receiving unit has multiple light receiving elements and receives reflected light that has been irradiated onto the object; and The light emission control unit controls the emission of light illuminating the segmented region in a region where the light receiving area of ​​the reflected light on the object does not overlap with the irradiation area of ​​the light already irradiated on the object, wherein the segmented region is included in the object region corresponding to the irradiation area.

2. The optical device according to claim 1, wherein, The light emission control unit controls the emission of light that is included in the object region in a manner different from controlling the emission of light that is irradiated onto the segmented region that is not included in the object region.

3. The optical device according to claim 2, wherein, The light emission control unit controls the emission of light and extinguishes the light illuminating the segmented area.

4. The optical device according to any one of claims 1 to 3, wherein, The shape of the segmented region is determined such that the ratio of the total area of ​​the segmented region included in the object region to the area of ​​the object region is increased.

5. The optical device according to claim 4, wherein, The segmented region is rectangular in shape, and the light-emitting part and the light-receiving part are arranged along the short side of the rectangle.

6. The optical device according to any one of claims 1 to 5, further comprising a detection unit for detecting the target area, The light emission control unit controls the emission of light that illuminates the detected object area.

7. The optical device according to claim 6, wherein, The detection unit also detects the segmented regions included in the detected object region. The light emission control unit controls the emission of light that illuminates the detected segmented region.

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