JP6460313B2 - Optical device - Google Patents

Description

  The present invention relates to an optical device capable of illumination and display.

  Conventionally, there has been proposed a technique for lighting a streetlight when the surroundings become dark and an approach of a moving body is detected or when a lighting instruction for instructing lighting of a streetlight is received (Patent Document 1).

JP 2009-2559584 A

  However, the technique described in Patent Document 1 only controls lighting and extinguishing of street lamps, and cannot notify information to a moving body.

  The present invention provides an optical device that enables a driver and a passerby to accurately grasp information by illuminating or displaying a passage, a road, and an object.

An optical device according to the present invention that achieves the above object is as follows.
A receiving unit that receives a predetermined radio wave, a moving body sensor that detects a moving body, or a detection unit that detects an object by an obstacle sensor that detects an obstacle;
When the object is detected by the detection unit, a control unit that issues an instruction to perform irradiation by selecting either illumination light or information or both illumination light and information, and
An irradiation unit that performs the irradiation according to an instruction of the control unit;
Equipped with a,
The control unit causes the irradiation unit to irradiate an arrow indicating the traveling direction when the detecting unit detects the target and recognizes the traveling direction of the target .

An optical device according to the present invention is
The control unit is characterized in that, when the detection unit detects the object, the control unit expands an irradiation range of illumination light irradiated by the irradiation unit.

An optical device according to the present invention is
When the detection unit detects the object, the control unit causes the sign to irradiate illumination light emitted from the irradiation unit.

An optical device according to the present invention is
When the detection unit detects an obstacle, the control unit causes the obstacle to irradiate illumination light emitted from the irradiation unit.

An optical device according to the present invention is
At least a first diffusion element region composed of a set of element diffusion elements in which predetermined predetermined information is recorded, and a second diffusion element composed of a set of element diffusion elements in which information different from the first diffusion element region is recorded A diffusion part having a diffusion element divided into regions;
Said reflected irradiated light from the irradiation unit, the scanning unit for scanning the light to include at least one of the first diffusion element region and said second diffusion element region,
It is characterized by providing.

An optical device according to the present invention is
At least a first diffusion element region composed of a set of element diffusion elements in which predetermined predetermined information is recorded, and a second diffusion element composed of a set of element diffusion elements in which information different from the first diffusion element region is recorded A diffusion part having a diffusion element divided into regions;
A scanning unit that movably supports the diffusion unit such that light emitted from the irradiation unit scans at least one of the first diffusion element region and the second diffusion element region;
It is characterized by providing.

  According to the optical device according to the present invention, it is possible to cause the driver and surrounding people to accurately grasp information by illuminating or displaying a road or an object.

The initial state of the optical apparatus of this embodiment is shown. 1 is a system diagram of an optical apparatus according to an embodiment. An example of the flowchart of the optical apparatus of this embodiment is shown. An example in which the optical apparatus of the present embodiment is activated will be described. The other example of the flowchart of the optical apparatus of this embodiment is shown. The other example which the optical apparatus of this embodiment act | operated is shown. The example which installed the optical apparatus of this embodiment indoors is shown. It is a side view in the 1st state of the irradiation part of the optical apparatus of 1st Embodiment. It is a side view in the 2nd state of the irradiation part of the optical apparatus of 1st Embodiment. It is another example of the optical apparatus of 1st Embodiment. It is a side view in the 1st state of the irradiation part of the optical apparatus of 2nd Embodiment. It is a front view in the 1st state of the irradiation part of the optical apparatus of 2nd Embodiment. It is a front view in the 2nd state of the irradiation part of the optical apparatus of 2nd Embodiment.

  The optical device according to the present invention will be described below with reference to the drawings.

  FIG. 1 shows an initial state of the optical apparatus of the present embodiment.

  The optical device 1 of the present embodiment is built in a street light or other illumination L on the road D at night and in a normal initial state, and irradiates illumination light 11 from the irradiation unit 10. For example, the irradiation part 10 should just irradiate only the minimum illumination light 11 at night when a moving body does not exist. The irradiation position may be at least one of the road D and the sidewalk A.

  FIG. 2 shows a system diagram of the optical apparatus of the present embodiment.

  The optical device 1 according to this embodiment includes a detection unit 5, a storage unit 6, a control unit 7, and an irradiation unit 10.

  The detection unit 5 includes a solar radiation sensor 51 that detects ambient light and darkness, a reception unit 52 that receives radio waves, a mobile body sensor 53 that detects a mobile body, and an obstacle sensor 54. The solar radiation sensor 51 may detect day and night, or may detect light and dark. A configuration that detects light and dark is preferable because it can detect darkness even in the daytime such as rainy weather or fog. The receiving unit 52 receives a predetermined radio wave such as a predetermined infrared ray or millimeter wave radar transmitted from, for example, an automobile or a pedestrian. The moving body sensor 53 detects a moving body that moves. In particular, it is preferable that the moving body sensor 53 can detect which place is moving at what speed. The obstacle sensor 54 detects the presence of an obstacle of a predetermined size that obstructs running or walking on the road. In addition, the road in this embodiment includes not only a road through which automobiles and the like pass, but also a road through which people such as sidewalks pass. Moreover, the detection part 5 does not need to have all of these.

  The storage unit 6 stores a control method for the irradiation unit 10 corresponding to the input content of the detection unit 5. For example, when the traveling on the road is input from both the receiving unit 52 and the moving body sensor 53, the storage unit 6 stores that the moving body is an automobile. Note that the storage unit 6 may be included in the control unit 7.

  The control unit 7 controls the irradiation unit 10 in accordance with instructions from the detection unit 5 and the storage unit 6. The irradiation unit 10 has a structure capable of controlling the irradiation type and the irradiation direction.

  FIG. 3 shows an example of a flowchart of the optical apparatus of the present embodiment. In the flowchart in FIG. 3, YES determination is expressed as “Y”, and No determination is expressed as “N”. FIG. 4 shows a state in which the optical apparatus of the present embodiment is activated.

  The optical device 1 of the present embodiment first determines in step 1 whether or not the surrounding is dark (ST1). If it is determined in step 1 that the surroundings are bright, the control of the optical device 1 is terminated. Note that even when the surroundings are bright, control may be performed so that signs and dangerous objects can be irradiated.

  If it is determined in step 1 that the surrounding is dark, in step 2, the street lamp is turned on in the initial state shown in FIG. 1 (ST2).

  Next, in step 3, it is determined whether there is an object based on an input signal from the input unit 5 (ST3). For example, it is determined whether there is an object from signals from the receiving unit 52, the moving body sensor 53, the obstacle sensor 54, and the like. If it is determined in step 3 that there is no object, the process returns to step 3.

  If it is determined in step 3 that the object exists, it is determined in step 4 whether or not the object is a vehicle based on an input signal from the input unit 5 (ST4). For example, it is determined whether or not the object is a vehicle from signals from the receiving unit 52, the moving body sensor 53, the obstacle sensor 54, and the like.

  If it is determined in step 4 that the object is a vehicle, the irradiation unit 10 expands the irradiation range of the road with the first illumination light 11 in step 5 as shown in FIG. The marker B is irradiated with the illumination light 12 (ST5).

If it is determined in step 4 that the object is not a vehicle, it is determined in step 6 whether or not the object is a pedestrian (ST6). The determination of whether or not the person is a pedestrian M may be made by using, for example, recognition by a camera or a radio wave of a mobile phone held by the pedestrian.

  If it is determined in step 6 that the object is a pedestrian, in step 7, the irradiation unit 10 irradiates the sidewalk A with the third illumination light 13 as shown in FIG. 4 (ST7).

  If it is determined in step 6 that the object is not a pedestrian, the irradiation unit 10 directly irradiates the object with the fourth illumination light 14 in step 8 as shown in FIG. 4 (ST8). For example, as shown in FIG. 4, when there is an animal or an article on a road in the traveling direction of the automobile, the fourth illumination light 14 is irradiated from the irradiation unit 10 in order to alert the driver of the automobile. Good.

  As described above, according to the optical device 1 of the present embodiment, it is possible to cause the driver and the pedestrian M to accurately grasp the information and to avoid a difficult situation.

  FIG. 5 shows another example of a flowchart of the optical apparatus of the present embodiment. In the flowchart in FIG. 5, YES determination is expressed as “Y”, and No determination is expressed as “N”. FIG. 6 shows another example in which the optical apparatus of this embodiment is operated.

  The example shown in FIG. 6 is a state in which the turn signal switch is turned on so that the vehicle C tries to turn left at the intersection. In this example, control after the optical device 1 in the streetlight shown in FIG.

  First, in step 11, the control unit 7 of the optical device 1 of the present embodiment determines whether or not the signal received by the receiving unit 52 is a signal that turns on the winker switch (ST11). In step 11, if the turn signal switch is not ON, the control is terminated.

  In step 11, when the turn signal switch of the vehicle C is turned on, in step 12, the control unit 7 determines whether or not it is a left turn switch (ST12). In addition, what is necessary is just to utilize the recognition by a camera, or the electromagnetic wave from a vehicle, etc. for ON of a turn signal switch, and determination of a left turn or a right turn.

  In step 12, if the turn signal switch is a left turn switch, in step 13, as shown in FIG. 6, the control unit 7 displays a left turn arrow on the road (ST13). If the winker switch is not a left turn switch in step 12, the control unit 7 displays a right turn arrow on the road in step 14 (ST14).

  Next, in step 15, it is determined whether or not there is a pedestrian M (ST15). The determination as to whether or not the pedestrian M exists may be made by using, for example, recognition by a camera or radio waves of a mobile phone held by the pedestrian.

  In step 15, when it is determined in step 16 that there is a pedestrian, the control unit 7 displays a mark for calling attention such as the shape of the car on the sidewalk (ST16).

  As described above, according to the optical device 1 of the present embodiment, it is possible to cause the driver and the pedestrian M to accurately grasp the information and to avoid a difficult situation.

  FIG. 7 shows an example in which the optical device of this embodiment is installed indoors.

The optical device 1 of this embodiment can also be used for indoor lighting. For example, as shown in FIG. 7, it can be used for an illumination light L1 installed on a ceiling H such as a corridor or an emergency light L2 installed on a wall.

  The example shown in FIG. 7 assumes a case where the pedestrian M holds a pass or the like in which the destination is stored in advance. And the case where the destination of the pedestrian M exists in the place which left-turned the hallway is demonstrated. In this case, the solar radiation sensor 51 of the detection unit 5 shown in FIG. 2 is not necessary.

  Normally, the optical device 1 emits illumination light 11 from the irradiation unit 10. In order to save power, the illumination light 11 may be irradiated when the moving body sensor 53 shown in FIG. 2 detects the moving body.

  When the receiving unit 52 shown in FIG. 2 receives a destination signal from a passport or the like and inputs it to the control unit 7, the control unit 7 obtains information from the storage unit 6 that exists at the place where the destination turns left. The control unit 7 controls the irradiation unit 10 to emit information indicating a left turn.

  For example, the optical device 1 according to this embodiment irradiates the floor F with the left turn arrow 17 from the irradiation unit 10 of the illuminating lamp L1 installed on the ceiling H, and the irradiation unit 10 of the first emergency light L2 installed on the wall. The wall G can be irradiated with a left turn arrow 18 and the ceiling H can be irradiated with a left turn arrow 19 from the irradiation unit 10 of the second emergency light L2 installed on the wall.

  Thus, according to the optical device 1 of the present embodiment, it is possible to accurately grasp information even indoors.

  Next, a specific structure of the optical device 1 will be described.

  FIG. 8 is a side view of the irradiation unit of the optical device according to the present embodiment in the first state. FIG. 9 is a front view of the irradiation unit of the optical device according to the present embodiment in the first state.

  The irradiation unit 10 of the optical device 1 according to the present embodiment includes a light emitting unit 2, a scanning unit 3, and a diffusing unit 4.

  The light emitting unit 2 emits a coherent laser beam having a directivity and a predetermined wavelength. The light emitting unit 2 may be a laser array in which a plurality of elements are bundled. Moreover, the light emission part 2 may be equipped with the laser beam of a some wavelength. Further, in order to optimize the incident light incident on the scanning unit, a light uniformizing element such as a rod integrator or a fly eye integrator, or a light shaping element such as a lens or a diaphragm may be provided. There may be a function of switching the light emission timing by switching the power ON / OFF and a function of switching the light emission timing using a shutter or the like. Moreover, the light emission part 2 may be what can irradiate the laser beam of a some wavelength. For example, illumination light or display light can be colored by irradiating laser beams corresponding to R (red), G (green), and B (blue), respectively. In addition, you may utilize the light source which shows the other peak wavelength. For example, color notation may be performed with two or more types of non-limiting light sources.

The scanning unit 3 has a function of causing light from the light emitting unit 2 to enter a predetermined position on the incident surface of the diffusing unit 4. For example, an optical member such as a mirror or a prism is mechanically rotated and vibrated, and incident light from the light emitting unit is irradiated to a predetermined position of the diffusing unit 4 using reflection or refraction. For example, MEMS (Micr
o Electro Mechanical System) A member called an optical scanner such as a scanner or a polygon scanner, but is not limited thereto. The scanning unit 3 may be a member that supports the diffusion unit 4 so as to be movable.

The diffusing unit 4 includes a diffusing element 40, and the diffusing element 40 is an aggregate including a plurality of element diffusing elements. The diffusion element 40 is, for example, a hologram. Each element hologram adjacent to the hologram basically has a separate irradiation region or a corresponding wavelength region of separate coherent light, but some regions may overlap. A different wavefront is formed from each point on the element hologram exit surface, and is overlapped independently in the corresponding illuminated area. Therefore, a uniform illuminance distribution can be obtained in the irradiated region by entering the incident surface of the element hologram from a plurality of positions using scanning light or a laser array light source. The shape of the irradiation area of the element hologram is a line and an arrow in this case, but is not limited to this.

The element hologram is produced by using, for example, scattered light from a scattering plate as object light on a hologram photosensitive material such as a photopolymer or a silver salt material. Laser light which is coherent light is used as the reference light. Then, when laser light is irradiated from the focal position of the reference light used for production toward the hologram, a reproduced image of the scattering plate is reproduced at the position of the original scattering plate used as object light. This reproduced image becomes an irradiation area of the element hologram. If the scattering plate having the arrow shape is used, the irradiation region having the arrow shape can be reproduced. A relief type (embossed type) hologram may be used. It is also possible to design using a computer without using actual object light or reference light. The hologram thus obtained is called a computer generated hologram (CGH). Further, a Fourier transform hologram having the same diffusion angle characteristic at each point on the hologram may be formed by computer synthesis. Further, it may be a reflection hologram or a transmission hologram.

  The advantage of providing a hologram as the diffusing element 40 is that the light energy density of the laser light can be reduced by diffusion and can be used as a directional surface light source, so that it is the same as a point light source such as a conventional lamp. The light source luminance for realizing the illuminance distribution can be lowered. Therefore, distant illumination is possible more safely.

  The diffusion element 40 may be various diffusion members that can be finely divided into a plurality of element diffusion regions, such as a microlens array.

  In the optical device 1 of the first embodiment, the irradiation light from the light emitting unit 2 is reflected by the mirror 31 that is one type of the scanning unit 3 and is incident on the transmission hologram 40 of the diffusion element 40. Further, the mirror 31 is configured to move in the X-X ′ direction by being rotated about the rotation axis O by a motor (not shown) or the like. In the optical device 1 according to the first embodiment, based on the control command from the control unit 7 shown in FIG. 2, the motor is driven and the reflected light of the mirror 31 is converted into the first hologram region 41 and the second hologram 40 of the hologram 40. It can be applied to any one of the hologram regions 42. Here, “turning” means that an object turns around a certain axis within a restricted angle range.

  In the irradiation unit 10 of the optical device 1 according to the first embodiment, for example, in the first state illustrated in FIG. 8, the light irradiated from the light emitting unit 2 is reflected by the mirror 31 and passes through the first hologram region 41. The light 11 passes through and is irradiated with illumination light 11. In the second state in which the mirror 31 shown in FIG. 9 is rotated, the light emitted from the light emitting unit 2 is reflected by the mirror 31 and passes through the second hologram region 42 to display the arrow 15.

  With the configuration as described above, a single optical device 1 can project a plurality of hologram reproduction images. In the optical device 1 in the first embodiment, the hologram reproduction image of the illumination light 11 and the arrow 15 is projected, but for example, a hologram reproduction image of characters such as “STOP” and “BRAKE” is displayed. It is also possible to make it.

  FIG. 10 is another example of the optical device according to the first embodiment.

  As shown in FIG. 10, the mirror 31 that is one type of the scanning unit 3 may be configured to be rotatable with respect to the first axis 3a and the second axis 3b orthogonal to the first axis 3a. Also in this case, it is possible to project a plurality of hologram reproduction images with one optical device 1.

  Next, the optical device 1 according to the second embodiment will be described.

  FIG. 11 is a side view of the irradiation unit in the first state of the optical device according to the second embodiment. FIG. 12 is a front view of the irradiation unit in the first state of the optical device according to the second embodiment.

  The scanning unit 3 in the irradiation unit 10 of the optical device 1 according to the second embodiment includes a support rail 31 as an outer frame portion surrounding the outer periphery of the hologram 40 as the diffusion element 40, and the two-dimensional hologram 40 with respect to the support rail 31. And a guide rail 32 as a guide part that guides the vehicle in a movable manner. The guide rails 32 are movably supported by the support rails 31 facing both ends, and each side of the hologram 40 is movably supported by the respective guide rails 32. That is, the incident light from the light emitting unit 2 does not change its position, but the incident light can selectively enter the predetermined position of the hologram 40 by changing the position of the hologram 40 itself.

  For example, in the first state, the fifth hologram region 45 of the diffusing element 4 is irradiated from the light emitting unit 2 and the illumination light 11 is irradiated in a predetermined direction.

  Next, the operation of the optical device 1 according to the second embodiment will be described.

  FIG. 13 is a front view of the optical device according to the second embodiment in the second state.

  To move from the first state in which the light emitted from the light emitting unit 2 shown in FIG. 12 is applied to the fifth hologram region 45 to the second state in which the sixth hologram region 46 shown in FIG. First, a switching signal is input to the control unit 7 from the detection unit 5 shown in FIG. The control unit 7 acquires the area of the hologram 40 corresponding to the input content from the detection unit 5 from the storage unit 6. Thereafter, the control unit 7 drives the scanning unit 3 so that the region of the hologram 40 acquired from the storage unit 6 is irradiated from the light emitting unit 2.

  For example, in the second embodiment, a signal indicating the destination location is input from the detection unit 5 to the control unit 7. The control unit 7 acquires a signal stored in the storage unit 6 that the area where the arrow is displayed is the sixth hologram area 46. Then, the control unit 7 drives the scanning unit 3 so that the sixth hologram region 46 of the hologram 40 is irradiated from the light emitting unit 2.

  As described above, according to the optical device 1 of the present embodiment, it is possible to quickly and accurately switch the projection contents according to the change of the state. Also, it becomes possible to accurately illuminate a predetermined position.

  As described above, according to the present embodiment, an object is detected by the receiving unit 52 that receives a predetermined radio wave, the moving body sensor 53 that detects a moving body, or the obstacle sensor 54 that detects an obstacle. When the object is detected by the detection unit 5 and the detection unit 5, either the illumination light 11, 12, 13, 14 or the information 15, 16 or the illumination light 11, 12, 13, 14 and the information 15, 16 Since both the control unit 7 for selecting both of them and giving an instruction to perform irradiation, and the irradiation unit 10 for performing irradiation in accordance with the instruction of the control unit 7, roads A and D or a floor F of the passage, a wall G, By illuminating or displaying the ceiling H and the objects B, E, and M, it becomes possible for the passerby, the driver, and the surrounding people to accurately grasp the surrounding situation and information.

Further, according to the optical device 1 of the present embodiment, the control unit 7 expands the irradiation range of the illumination light 11 irradiated by the irradiation unit 10 when the detection unit 5 detects the object, so that the driver can It is possible to accurately grasp the information of the vehicle and to allow the surrounding people to accurately grasp the approach of the vehicle.

  Further, according to the optical device 1 of the present embodiment, the control unit 7 irradiates the label B with the illumination light 11 irradiated by the irradiation unit 10 when the detection unit 5 detects the object, so that the information on the label is displayed. It becomes possible to grasp accurately.

  Further, according to the optical device 1 of the present embodiment, the control unit 7 irradiates the irradiation unit 10 with the arrow 15 indicating the traveling direction when the detecting unit 5 detects the target object and recognizes the traveling direction of the target object. Therefore, it is possible to clearly recognize the traveling direction.

  Further, according to the optical device 1 of the present embodiment, when the detection unit 5 detects an obstacle, the control unit 7 irradiates the obstacle with the illumination light 11 irradiated by the irradiation unit 10, so that the obstacle is accurately detected. Can be grasped.

  Further, according to the optical device 1 of the present embodiment, at least information different from the first hologram area 41 and the first hologram area 41, which is a set of element holograms in which predetermined information is recorded, is recorded. A diffusion part having a hologram 40 divided into a second hologram area 42 composed of a set of element holograms, and reflects light emitted from the light emitting part 2, and includes at least one of the first hologram area 41 and the second hologram area 42. Since the scanning unit 3 that scans the light so as to include one is provided, the projection contents can be switched quickly and accurately according to the input. Also, it becomes possible to accurately illuminate a predetermined position.

  Further, according to the optical device 1 of the present embodiment, at least information different from the first hologram area 41 and the first hologram area 41, which is a set of element holograms in which predetermined information is recorded, is recorded. The hologram part 4 having the hologram 40 divided into the second hologram area 42 composed of a set of element holograms, and the light emitted from the light emitting part 2 has at least one of the first hologram area 41 and the second hologram area 42. Since the scanning unit 3 movably supports the hologram unit 4 so as to scan, the projection content can be switched quickly and accurately according to the input. Also, it becomes possible to accurately illuminate a predetermined position.

  Although the optical device 1 has been described based on several embodiments, the present invention is not limited to these embodiments, and various combinations or modifications are possible.

DESCRIPTION OF SYMBOLS 1 ... Optical apparatus 2 ... Light emission part 3 ... Scanning part 4 ... Diffusion part 5 ... Detection part 6 ... Memory | storage part 7 ... Control part 8 ... Drive part

Claims (6)

A receiving unit that receives a predetermined radio wave, a moving body sensor that detects a moving body, or a detection unit that detects an object by an obstacle sensor that detects an obstacle;
When the object is detected by the detection unit, a control unit that issues an instruction to perform irradiation by selecting either illumination light or information or both illumination light and information, and
An irradiation unit that performs the irradiation according to an instruction of the control unit;
Equipped with a,
The control unit causes the irradiation unit to irradiate an arrow indicating the traveling direction when the detecting unit detects the target and recognizes the traveling direction of the target. apparatus. The optical device according to claim 1, wherein when the detection unit detects the object, the control unit expands an irradiation range of illumination light irradiated by the irradiation unit. 3. The optical device according to claim 1, wherein when the detection unit detects the target, the control unit causes the marker to irradiate illumination light emitted from the irradiation unit. 4. Wherein, when the detecting unit detects an obstacle, the optical according to the illumination light the irradiation unit irradiates any one of claims 1 to 3, characterized in that to irradiate the obstacle apparatus. At least a first diffusion element region composed of a set of element diffusion elements in which predetermined predetermined information is recorded, and a second diffusion element composed of a set of element diffusion elements in which information different from the first diffusion element region is recorded A diffusion part having a diffusion element divided into regions;
Said reflected irradiated light from the irradiation unit, the scanning unit for scanning the light to include at least one of the first diffusion element region and said second diffusion element region,
The optical device according to any one of claims 1 to 4, characterized in that it comprises. At least a first diffusion element region composed of a set of element diffusion elements in which predetermined predetermined information is recorded, and a second diffusion element composed of a set of element diffusion elements in which information different from the first diffusion element region is recorded A diffusion part having a diffusion element divided into regions;
A scanning unit that movably supports the diffusion unit such that light emitted from the irradiation unit scans at least one of the first diffusion element region and the second diffusion element region;
The optical device according to any one of claims 1 to 4, characterized in that it comprises.

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