JP2016107775A - Optical device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical device allowing a driver to secure information properly by projecting the information on the front of a running vehicle to the outside of the vehicle.SOLUTION: An optical device 1 installed in a vehicle C comprises: an irradiation part 10 emitting light; and a control part 7 performing control so that, in response to information around the vehicle C, the irradiation part 10 emits at least any one of an illumination 11 and a display 12 according to the information around the vehicle C to an object to be irradiated.SELECTED DRAWING: Figure 2

Description

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

  Conventionally, there has been proposed a driving assistance device that detects surrounding obstacles while the vehicle is traveling and guides the driver's line of sight to the detected obstacles (see Patent Document 1).

JP 2012-234409 A

  However, the technique described in Patent Document 1 merely guides the driver's line of sight and does not teach the contents of information.

  The present invention provides an optical device that allows a driver to accurately grasp information by projecting information around the vehicle outside the vehicle.

An optical device according to the present invention that achieves the above object is as follows.
An irradiating unit mounted on a vehicle and irradiating light;
A control unit that controls the irradiation unit to irradiate at least one of illumination and display based on the information around the vehicle according to information around the vehicle;
It is characterized by providing.

An optical device according to the present invention is
It is provided with the detection part which detects the information around a vehicle.

An optical device according to the present invention is
The detection unit detects a distance from a preceding vehicle traveling in front of the vehicle and a speed difference from the preceding vehicle;
When the distance between the vehicle and the preceding vehicle is smaller than a predetermined distance, and the speed difference between the vehicle and the preceding vehicle is larger than a predetermined speed difference, the control unit It is characterized by irradiating at least any one of illumination and display from the part to the front of the vehicle.

An optical device according to the present invention is
The detection unit detects a distance from the rear vehicle traveling behind the vehicle and a speed difference from the rear vehicle;
When the distance between the vehicle and the rear vehicle is smaller than a predetermined distance and the speed difference between the vehicle and the rear vehicle is larger than a predetermined speed difference, the control unit It is characterized by irradiating at least any one of illumination and a display from the part to the rear of the vehicle.

An optical device according to the present invention is
The irradiation unit is
A light emitting unit that emits coherent light;
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 unit having a diffusion element divided into regions, and diffusing coherent light emitted by the light emitting unit;
It is characterized by having.

An optical device according to the present invention is
A scanning unit that scans the light so that light emitted from the light emitting unit includes at least one of the first diffusion element region and the second diffusion element region is provided.

An optical device according to the present invention is
The irradiation unit also serves as a headlight of the vehicle.

  According to the optical device of the present invention, it is possible to cause the driver to accurately grasp the information by projecting information around the vehicle outside the vehicle.

The non-operation state of the optical apparatus of this embodiment is shown. It is a system configuration figure of the optical device of this embodiment. The operation state of the 1st Example of the optical apparatus of this embodiment is shown. The figure which looked at the operation state of FIG. 3 from the driver's seat is shown. The operating state of the 2nd Example of the optical apparatus of this embodiment is shown. The operating state of the 3rd Example of the optical apparatus of this embodiment is shown. It is a side view in the 1st state of the irradiation part of 1st Embodiment used for the optical apparatus of this embodiment. It is a side view in the 2nd state of the irradiation part of 1st Embodiment used for the optical apparatus of this embodiment. The other example of the irradiation part of 1st Embodiment is shown. An example of the unit unit of the irradiation part of 2nd Embodiment is shown. It is a figure explaining the illumination by the unit unit of the irradiation part of 2nd Embodiment. The illumination by the irradiation part of 2nd Embodiment is shown. It is a side view in the 1st state of the irradiation part of 3rd Embodiment. It is a front view in the 1st state of the irradiation part of 3rd Embodiment. It is a front view in the 2nd state of the irradiation part of 3rd Embodiment.

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

FIG. 1 shows a non-operating state of the optical device of the present embodiment. FIG. 2 is a system configuration diagram of the optical system of the present embodiment. FIG. 3 shows the operating state of the first example of the optical apparatus of the present embodiment. 4 shows a view of the operating state of FIG. 3 as seen from the driver's seat.

The optical device 1 of this embodiment is mounted on a vehicle C, detects surrounding information, and irradiates an irradiation target, that is, the road surface of the road D, with at least illumination or display according to the information. For example, the optical device of the first embodiment detects the distance between the front vehicle Cf and the host vehicle C and the speed difference between the front vehicle Cf and the host vehicle C, and determines that there is a possibility of a rear-end collision. The display 12 such as “Speed Down” is irradiated to alert the driver. The optical device 1 may irradiate at least one of the illumination 11 and the display 12 from the irradiation unit 10. The vehicle is not limited to a four-wheeled vehicle, and includes a two-wheeled vehicle. Moreover, an irradiation target object is a target object which irradiates the illumination 11 or the display 12, for example, the road D or the front vehicle Cf etc. as mentioned above.

  The optical system 100 according to the present embodiment includes the optical device 1 and a transmission unit that transmits a signal to the optical device 1. The optical device 1 according to this embodiment includes a light emitting unit 2, a scanning unit 3, a diffusion unit 4, a detection unit 5, a storage unit 6, and a control unit 7. In FIG. 2, solid arrows indicate signal exchange between the components.

  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 3, 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. In addition, you may comprise the scanning part 3 by controlling light emission of the light emission parts 2, such as a laser array.

  The diffusing unit 4 includes a diffusing element, and the diffusing element is an aggregate including a plurality of element diffusing elements. The diffusion element 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 a diffusing element is that the light energy density of the laser beam can be reduced by diffusion and it can be used as a directional surface light source, so it has the same illuminance compared to a point light source such as a conventional lamp The light source luminance for realizing the distribution can be lowered. Therefore, distant illumination is possible more safely.

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

  The detection unit 5 is a camera, an infrared sensor, various sensors such as a millimeter wave radar, and the like, and inputs a detection signal to the control unit 7. The detection unit 5 of the present embodiment detects the distance between the front vehicle Cf and the host vehicle, the speed difference between the front vehicle Cf and the host vehicle, and the like. The detection unit 5 may also be used as another safety device.

  The storage unit 6 stores a region of the diffusion unit 4 corresponding to the detection content of the detection unit 5. Note that the storage unit 6 may be included in the control unit 7.

  The control unit 7 controls the light emitting unit 2 or the scanning unit 3 in accordance with instructions from the detection unit 5 and the storage unit 6.

  In the normal running state as shown in FIG. 1, the detection unit 5 has a distance between the front vehicle Cf and the host vehicle shorter than a predetermined distance, and a speed difference between the front vehicle Cf and the host vehicle is a predetermined speed difference. 3 is detected, the optical device 1 irradiates a red illumination 11 and a display 12 such as “Speed Down” on the front lower side of the host vehicle C as shown in FIG.

Therefore, as shown in FIG. 4, the driver can recognize the red illumination 11 and the “Speed Down” display 12 at the front lower side of the host vehicle C, and can prevent an accident such as a rear-end collision. Become. Note that the color of the illumination 11 is not limited to red, and other colors may be used. The display 12 is not limited to words, but may be symbols or characters. However, those that are easily recognized by the driver are preferable.

  As described above, the detection unit 5 detects a state in which the distance between the front vehicle Cf and the host vehicle is shorter than a predetermined distance, and the speed difference between the front vehicle Cf and the host vehicle is larger than a predetermined speed difference. In this case, since the optical device 1 irradiates at least one of the illumination 11 and the display 12 to the front lower side of the host vehicle C, it is possible to alert the driver and prevent accidents such as rear-end collisions.

  FIG. 5 shows the operating state of the second example of the optical apparatus of the present embodiment.

In the example shown in FIG. 5, the optical device 1 detects the distance between the rear vehicle Cb and the host vehicle C and the speed difference between the rear vehicle Cb and the host vehicle C, and determines that there is a possibility of a rear-end collision. The display 12 such as “Speed Down” is irradiated to alert the driver of the rear vehicle Cb. The optical device 1 may irradiate at least one of the illumination 11 and the display 12 from the irradiation unit 10.

In the normal running state as shown in FIG. 1, the detection unit 5 has a distance between the rear vehicle Cb and the host vehicle C shorter than a predetermined distance, and a speed difference between the rear vehicle Cb and the host vehicle C is a predetermined predetermined value. When a state larger than the speed difference is detected, the optical device 1 irradiates a red illumination 11 and a “Speed Down” display 12 to the rear lower side of the host vehicle C as shown in FIG.

Therefore, as shown in FIG. 5, the driver of the rear vehicle Cb can recognize the red illumination 11 and the “Speed Down” display 12 in the front lower direction, and can prevent an accident such as a rear-end collision. Become. Note that the color of the illumination 11 is not limited to red, and other colors may be used. The display 12 is not limited to words, but may be symbols or characters.

  Thus, the detection unit 5 is in a state where the distance between the rear vehicle Cb and the host vehicle C is shorter than a predetermined distance, and the speed difference between the rear vehicle Cb and the host vehicle C is larger than a predetermined speed difference. If detected, the optical device 1 irradiates at least one of the illumination 11 and the display 12 to the rear lower side of the host vehicle C, so that the driver of the rear vehicle Cb is alerted to prevent an accident such as a rear-end collision. Is possible.

  FIG. 6 shows the operating state of the third example of the optical apparatus of the present embodiment.

  In the example shown in FIG. 6, the optical device 1 also serves as the headlight H of the vehicle C. For example, when driving normally at night, the illumination 13 is emitted from the optical device 1 constituting the head ride H.

  When the detection unit 5 detects a state where the distance between the front vehicle Cf and the host vehicle is shorter than a predetermined distance and the speed difference between the front vehicle Cf and the host vehicle is larger than a predetermined speed difference, As shown in FIG. 6, the optical device 1 irradiates a “Speed Down” display 12 together with the illumination 13 on the front lower side of the host vehicle C.

Therefore, as shown in FIG. 6, the driver displays the lighting 13 and “Speed” in front of the host vehicle C.
The “Down” display 12 can be recognized, and accidents such as rear-end collisions can be prevented.
The display 12 is not limited to words but may be symbols or characters.

  As described above, the detection unit 5 detects a state in which the distance between the front vehicle Cf and the host vehicle is shorter than a predetermined distance, and the speed difference between the front vehicle Cf and the host vehicle is larger than a predetermined speed difference. In this case, since the optical device 1 irradiates the display 12 in front of and under the vehicle C in addition to the normal illumination 13, it is possible to alert the driver and prevent accidents such as rear-end collisions.

  Next, a specific structure of the irradiation unit 10 of the optical device 1 will be described.

  FIG. 7 is a side view of the irradiation unit 10 of the first embodiment used in the optical device 1 of the present embodiment in the first state. FIG. 8 is a side view of the irradiation unit 10 of the first embodiment used in the optical device 1 of the present embodiment in the second state.

  In the irradiation unit 10 of the first embodiment, the irradiation light from the light emitting unit 2 is reflected by a mirror 3 a that is one type of the scanning unit 3 and is incident on the transmission hologram 40 of the diffusion element 40. The mirror 3a 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 irradiation unit 10 of the first embodiment, based on a control command from the control unit 7 shown in FIG. 2, the motor is driven to reflect the reflected light of the mirror 3 a to the first hologram region 41 of the hologram 40, the second hologram. It can be applied to any of the areas 42. Here, “turning” means that an object turns around a certain axis within a restricted angle range.

  In such an irradiation unit 10 of the first embodiment, for example, in the first state shown in FIG. 7, the light irradiated from the light emitting unit 2 is reflected by the mirror 3 a and transmitted through the first hologram region 41 for illumination. Irradiate light 11. And in the 2nd state which rotated the mirror 3a shown in FIG. 8, the light irradiated from the light emission part 2 reflects with the mirror 3a, permeate | transmits the 2nd hologram area | region 42, and displays the character 12. FIG. Each hologram area 41, 42 constitutes a diffusion element area. Each hologram area 41, 42 is composed of a set of element diffusion elements.

  With the configuration as described above, a single optical device 1 can project a plurality of hologram reproduction images. In the optical apparatus 1 according to the present embodiment, the hologram reproduction image of the illumination light 11 and the character 12 of “Speed Down” is projected. For example, the hologram reproduction image of a character such as “STOP” or “BRAKE” Can also be displayed. Also, a symbol such as an arrow may be used.

  FIG. 9 shows another example of the irradiation unit of the first embodiment.

  As shown in FIG. 9, the mirror 3a which is one type of the scanning unit 3 may be configured to be rotatable with respect to the first axis 3x and the second axis 3y orthogonal to the first axis 3x. Also in this case, it is possible to project a plurality of hologram reproduction images with one optical device 1.

  FIG. 10 illustrates an example of a unit unit of the irradiation unit according to the second embodiment. FIG. 11 is a diagram illustrating illumination by a unit unit of the irradiation unit according to the second embodiment.

  In addition, the irradiation part 10 of 2nd Embodiment is comprised from the several unit unit 1 ', and unit unit 1' has the most basic minimum structure. The unit unit 1 ′ includes a light emitting unit 2 that emits laser light and a diffusion unit 4 that receives the laser light emitted from the light emitting unit 2 and performs illumination by emitting the light. In the second embodiment, a transmissive hologram 40 is used as the diffusing unit 4. In addition, the structure of the spreading | diffusion part 4 of 2nd Embodiment may be the same as that of 1st Embodiment.

  The hologram may be a transmission hologram or a reflection hologram. Examples of the hologram include an embossed hologram, a volume hologram, and an electronic hologram. In addition, a computer-generated hologram that is produced by recording interference fringes on a predetermined recording surface by calculation using a computer can also be used. In addition, among the computer-generated holograms, a Fourier-transform hologram that is a computer-generated hologram using a Fourier transform optical system may be used.

  In the second embodiment, the unit laser array 20 is used as the light emitting unit 2 in the unit unit 1 ′. The unit laser array 20 includes three laser light sources, a first laser light source 21, a second laser light source 22, and a third laser light source 23.

  The first laser light source 21, the second laser light source 22, and the third laser light source 23 emit light having different wavelengths, and the first laser light source 21 emits light having the first wavelength and the second laser light source. 22 emits light of the second wavelength, and the third laser light source 23 emits light of the third wavelength. In the present embodiment, for example, the first wavelength light emitted from the first laser light source 21 is blue light, the second wavelength light emitted from the second laser light source 22 is green light, The light of the third wavelength emitted from the three-laser light source 23 can be red light.

In the second embodiment, the unit laser array 20 will be described based on an example using three different types of laser light sources: a first laser light source 21, a second laser light source 22, and a third laser light source 23. Depending on the configuration of the optical device 1, the number of types of laser light sources used can be arbitrary.

  The laser light emitted from the first laser light source 21 enters the first storage area 41 as the first diffusion element area of the unit hologram 40, and the laser light emitted from the second laser light source 22 is emitted from the unit hologram 40. The laser light incident on the second storage area 42 as the second diffusion element area and emitted from the third laser light source 23 is incident on the third storage area 43 as the third diffusion element area of the unit hologram 40. It has become. Each storage area 41, 42, 43 is composed of a set of element diffusion elements.

  As shown in FIG. 11A, when the laser light from the first laser light source 21 is incident on the first storage area 41 of the unit hologram 40 as reference light, a hologram reproduction image recorded in the first storage area 41 is obtained. The first unit irradiation area emitted from the unit hologram 40 is illuminated.

  As shown in FIG. 11B, when the laser light from the second laser light source 22 enters the second storage area 42 of the unit hologram 40 as reference light, the hologram recorded in the second storage area 42 is reproduced. An image is emitted from the unit hologram 40 to illuminate the second unit irradiation area.

  Further, as shown in FIG. 11C, when the laser beam from the third laser light source 23 enters the third storage area 43 of the unit hologram 40 as the reference light, the hologram recorded in the third storage area 43 is reproduced. An image is emitted from the unit hologram 40 to illuminate the third unit irradiation region.

  The light emission of the first laser light source 21, the second laser light source 22, and the third laser light source 23 can be controlled by the control unit 7 shown in FIG. That is, the light emitting unit 2 includes the configuration of the scanning unit 3. Thus, in the unit unit 1 ′, each irradiation area can be arbitrarily illuminated with the three primary colors of each laser light source based on the control of each laser light source, so that the irradiation area is illuminated with any color. Will be able to.

  The optical device 1 of the second embodiment is provided with a plurality of unit units 1 ′ composed of a combination of the unit laser array 20 and the unit hologram 40 as described above, and the light emitting unit 2 and the diffusing unit 4 as the entire optical device 1. Is configured. That is, the light emitting unit 2 includes a plurality of unit laser arrays 20, and the diffusion unit 4 has a diffusion element region corresponding to each laser light source of the plurality of unit laser arrays 20.

  FIG. 12 shows illumination by the irradiation unit of the second embodiment.

  Each unit laser array 20 shown in FIG. 11 illuminates each irradiation region, and as shown in FIG. 12, the entire optical device 1 is formed as a whole irradiation region.

  Here, the unit irradiation region formed by the unit laser array 20 and the unit hologram 40 plays a role like a pixel in a general display device, and in the optical device 1 according to the present invention, the unit irradiation region. Various illumination patterns can be formed by controlling the unit laser array 20 in the light emitting unit 2 so as to perform different illuminations.

  In the example shown in FIG. 12, the unit laser array 20 in the light emitting unit 2 is described as being planar, that is, two-dimensionally arranged. However, the unit laser array 20 is arranged one-dimensionally. May be.

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

  FIG. 13 is a side view of the irradiation unit in the first state according to the third embodiment. FIG. 14 is a front view of the irradiation unit in the first state according to the third embodiment.

  The scanning unit 3 in the irradiation unit 10 of the third embodiment can move the hologram 40 two-dimensionally with respect to the support rail 31 as an outer frame portion surrounding the outer periphery of the hologram 40 as the diffusion element 40 and the support rail 31. And a guide rail 32 as a guide part for guiding to. 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. Each hologram area 41 to 49 constitutes a diffusion element area. Each hologram area 41 to 49 is composed of a set of element diffusion elements.

  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 of the present embodiment will be described.

  FIG. 15 is a front view of the irradiation unit in the second state according to the third embodiment.

  To move from the first state in which the light emitted from the light emitting unit 2 shown in FIG. 14 is applied to the fifth hologram region 45 to the second state in which the sixth hologram region 46 shown in FIG. 15 is applied. 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 third 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.

  The optical device 1 described in this embodiment may be used as a vehicle headlight. In this case, it is possible to project information ahead of the vehicle while irradiating illumination light as a headlight.

  As described above, according to the optical device 1 of the present embodiment, the illumination unit 10 that is mounted on the vehicle C and emits light, and the illumination unit 10 is based on the information around the vehicle C, and the illumination 11 is based on the information around the vehicle C. And the control unit 7 that controls to irradiate the irradiation object with at least one of the display 12 and the display 12, so that the driver can accurately grasp the information.

  Further, according to the optical device 1 of the present embodiment, since the detection unit 5 that detects information around the vehicle C is provided, it is possible to accurately detect information around the vehicle C.

  Further, according to the optical device 1 of the present embodiment, the detection unit 5 detects the distance from the front vehicle Cf traveling in front of the vehicle C and the speed difference from the front vehicle Cf, and the control unit 7 If the distance between the vehicle C and the front vehicle Cf is smaller than a predetermined distance and the speed difference between the vehicle C and the front vehicle Cf is larger than a predetermined speed difference, the front of the vehicle C is illuminated from the irradiation unit 10 Since at least one of 11 and display 12 is irradiated, it is possible to alert the driver and prevent accidents such as rear-end collisions.

  Further, according to the optical device 1 of the present embodiment, the detection unit 5 detects the distance from the rear vehicle Cf traveling behind the vehicle C and the speed difference from the front vehicle Cf, and the control unit 7 When the distance between the vehicle C and the rear vehicle Cf is smaller than a predetermined distance, and the speed difference between the vehicle C and the rear vehicle Cf is larger than a predetermined speed difference, the illumination unit 10 illuminates the rear of the vehicle C. Since at least one of 11 and the display 12 is irradiated, it is possible to alert the driver of the rear vehicle Cf and prevent an accident such as a rear-end collision.

  Further, according to the optical device 1 of the present embodiment, the irradiating unit 10 includes the light-emitting unit 2 that emits coherent light and the first diffusion that includes at least a set of element diffusing elements in which predetermined information is recorded. Coherent light emitted from the light emitting section 2, having the diffusion element 40 divided into the second diffusion element region 42 composed of a set of element diffusion elements in which information different from the element region 41 and the first diffusion element region 41 is recorded. Therefore, it is possible to select from a predetermined shape and irradiate the target region with light accurately.

  Further, according to the optical device 1 of the present embodiment, the scanning unit that scans the light so that the light emitted from the light emitting unit 2 includes at least one of the first diffusion element region 41 and the second diffusion element region 42. 3 is provided, the projection contents can be switched quickly and accurately.

  Moreover, according to the optical apparatus 1 of this embodiment, since the irradiation part 10 serves also as the headlight H of the vehicle C, the number of parts can be reduced and the weight of a vehicle body and cost reduction are attained.

  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

Claims (7)

An irradiating unit mounted on a vehicle and irradiating light;
A control unit that controls the irradiation unit to irradiate at least one of illumination and display based on the information around the vehicle according to information around the vehicle;
An optical device comprising: The optical apparatus according to claim 1, further comprising a detection unit that detects information around the vehicle. The detection unit detects a distance from a preceding vehicle traveling in front of the vehicle and a speed difference from the preceding vehicle;
When the distance between the vehicle and the preceding vehicle is smaller than a predetermined distance, and the speed difference between the vehicle and the preceding vehicle is larger than a predetermined speed difference, the control unit The optical apparatus according to claim 2, wherein at least one of illumination and display is irradiated from a section to the front of the vehicle. The detection unit detects a distance from the rear vehicle traveling behind the vehicle and a speed difference from the rear vehicle;
When the distance between the vehicle and the rear vehicle is smaller than a predetermined distance and the speed difference between the vehicle and the rear vehicle is larger than a predetermined speed difference, the control unit 4. The optical device according to claim 2, wherein at least one of illumination and display is emitted from a section to the rear of the vehicle. 5. The irradiation unit is
A light emitting unit that emits coherent light;
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 unit having a diffusion element divided into regions, and diffusing coherent light emitted by the light emitting unit;
The optical device according to claim 1, wherein 6. The scanning unit according to claim 5, further comprising a scanning unit that scans the light so that light emitted from the light emitting unit includes at least one of the first diffusion element region and the second diffusion element region. Optical device. The optical device according to claim 1, wherein the irradiation unit also serves as a headlight of the vehicle.

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