JP6555461B2 - Optical system - Google Patents

Description

The present invention relates to an illumination and displayable optical system .

  Conventionally, a guidance device that recognizes a lane in which a vehicle is traveling and guides the lane to be traveled has been proposed (see Patent Document 1).

JP 2006-329832 A

  However, the technique described in Patent Document 1 indicates a traveling direction on the screen based on information stored in advance, and does not teach surrounding information. In addition, in order to display information on the screen, the driver has to shift his line of sight from the traveling direction during driving.

The present invention provides an optical system that allows a driver to accurately grasp information by projecting information ahead of the traveling vehicle to the outside of the vehicle.

An optical system according to the present invention that achieves the above object is as follows.
An irradiating unit mounted on a vehicle and irradiating light;
A transmission unit for transmitting color information of a signal in front of the vehicle;
A receiver that receives color information of a signal in front of the vehicle transmitted from the transmitter;
A control unit that controls the illumination unit to project illumination light of a signal color in front of the vehicle outside the vehicle; and
Equipped with a,
The irradiation unit is
A light emitting unit mounted on the vehicle for emitting coherent light;
At least a first diffusing element region comprising a set of element diffusing elements in which illumination information is recorded and a second diffusing element region comprising a set of element diffusing elements in which display information different from the first diffusing element region is recorded A diffusing unit that divides the coherent light emitted by the light emitting unit;
Have
The control unit emits light so as to include the first diffusion element region according to the color information of the signal ahead of the vehicle received by the reception unit, and emits illumination light of the color of the signal ahead of the vehicle The irradiation unit is controlled to project outside the vehicle .

Moreover, the optical system according to the present invention includes:
The transmission unit transmits information on the type of lane ahead of the vehicle,
The receiving unit receives the type of lane ahead of the vehicle,
The said control part makes the said light emission part light-emit the arrow of the kind of lane ahead of the said vehicle.

Moreover, the optical system according to the present invention includes:
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;
It is characterized by providing.

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

The 1st operation state of the 1st Example of the optical system of this embodiment is shown. The figure which looked at the operating state of FIG. 1 from the driver's seat is shown. The 2nd operation state of the 1st example of the optical system of this embodiment is shown. The figure which looked at the operating state of FIG. 4 from the driver's seat is shown. It is a system configuration figure of the optical system of this embodiment. The operation state of the example relevant to the 1st Example of the optical system of this embodiment is shown. The operation state of the 2nd example of the optical system of this embodiment is shown. The figure which looked at the operating state of FIG. 7 from the driver's seat is shown. The operation state of the example relevant to 2nd Example of the optical system 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 first operating state of a first example of the optical system according to the present embodiment. FIG. 2 shows a view of the operating state of FIG. 1 as viewed from the driver's seat.

The optical system 100 including the optical device 1 of the present embodiment includes a transmission unit 101 that transmits surrounding information, and causes the optical device 1 to perform illumination or display according to the information. The optical device 1 according to this embodiment is mounted on a vehicle C and irradiates an irradiation target, that is, a road surface of a road D with illumination, characters, symbols, or the like. For example, in the optical system 100 of the first example, the optical device 1 irradiates the front 11 of the host vehicle C with the illumination 11 having the color of the front signal S in accordance with the front signal S. The vehicle is not limited to a four-wheeled vehicle, but 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.

  1, when the signal S is red as shown in FIG. 1 and the host vehicle C stops after the front vehicle Cf, the front signal S may not be seen on the vehicle body of the front vehicle Cf as shown in FIG. is there. Since the optical device 1 according to the first embodiment illuminates the front signal S in front of the host vehicle C, the red illumination 11 is applied to the front lower portion of the host vehicle C in such a case. Therefore, even when the front signal S is not visible on the vehicle body of the front vehicle Cf, it is possible to recognize that the front signal S is red. As a result, even if the preceding vehicle Cf moves forward by mistake, it will not be moved forward and it will be possible to prevent accidents such as rear-end collisions. In addition, the illumination 11 may be irradiated including a part of the vehicle rear of the front vehicle Cf.

  The optical system 100 according to the first embodiment includes a transmission unit 101 that transmits color information of the signal S. In the first embodiment, the transmission unit 101 is provided in the signal S, but any transmission unit 101 may be used as long as it is near the intersection where the signal S is installed and can acquire the color of the signal S and transmit it.

  FIG. 3 shows a second operating state of the first example of the optical system of the present embodiment. 4 shows a view of the operating state of FIG. 3 as seen from the driver's seat.

  As shown in FIG. 3, the optical system 100 according to the first embodiment irradiates the front side and the lower side of the host vehicle C with the blue illumination 12 when the front signal S turns blue. That is, as shown in FIG. 4, even when the front signal S cannot be seen on the vehicle body of the front vehicle Cf, it can be recognized that the front signal S is blue. As a result, if the front vehicle Cf remains stopped, the front vehicle Cf can be urged to move forward. In addition, the illumination 12 may be irradiated including a part of the vehicle rear of the front vehicle Cf.

  As described above, according to the optical system 100 of the present embodiment, it is possible to cause the driver to accurately grasp the surrounding information. For example, it becomes possible to make the driver recognize the information by irradiating the information of the front signal.

  FIG. 5 is a system configuration diagram of the optical system of the present embodiment.

  The optical system 100 according to this embodiment includes an optical device 1 and a transmission unit 101 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 receiving unit 5, a storage unit 6, and a control unit 7. In FIG. 5, 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 region of the element hologram is illumination or 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 receiving unit 5 is an infrared sensor or various sensors such as a millimeter wave radar, and inputs a detection signal to the control unit 7. The receiving part 5 of this embodiment receives the color of a signal, the information of the left-right turn of a lane, etc.

  The storage unit 6 stores an area of the diffusion unit 4 corresponding to the content received by the reception 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 receiving unit 5 and the storage unit 6.

  The transmission unit 101 wirelessly transmits information to the reception unit 5 of the optical device 1. In the example illustrated in FIG. 1, the transmission unit 101 is provided in the signal S. However, the transmission unit 101 may be anything near the intersection where the signal S is installed, as long as the color of the signal S can be acquired and transmitted.

  FIG. 6 shows an operational state of an example related to the first example of the optical system of the present embodiment.

  In the example illustrated in FIG. 6, the color of the front signal S is also illuminated behind the host vehicle C in accordance with the color of the front signal S transmitted from the transmission unit 101. That is, according to the front signal S, the front illumination 11f is irradiated on the front lower side of the host vehicle C, and the rear illumination 11b is irradiated on the rear lower side of the host vehicle C. Thus, by illuminating the color of the front signal S behind the host vehicle C, the rear vehicle can recognize the color of the front signal S and can prevent accidents such as rear-end collisions. It becomes. In addition, you may irradiate only the front lower part or the rear lower part.

  FIG. 7 shows a first operating state of the second example of the optical system of the present embodiment. FIG. 8 shows a view of the operating state of FIG. 7 as viewed from the driver's seat.

  The optical system 100 including the optical device 1 of the present embodiment includes a transmission unit 101 that transmits surrounding information, and causes the optical device 1 to perform illumination or display according to the information. The optical device 1 of the present embodiment is mounted on a vehicle C and irradiates an arrow 13 on the road surface of an outdoor road D. For example, in the second embodiment, the lane type arrow 13 is irradiated on the front and lower side of the host vehicle C in accordance with a forward straight lane or a left / right turn lane.

  When the host vehicle C is traveling after the front vehicle Cf as shown in FIG. 7 while riding, the front lane display R may not be visible on the vehicle body of the front vehicle Cf as shown in FIG. Since the optical device 1 of the second embodiment irradiates the front lane type of the front lane of the host vehicle C, the arrow 13 is radiated to the front lower portion of the host vehicle C in such a case. Therefore, even when the front lane display R is not visible on the vehicle body of the front vehicle Cf, the front lane display R can be recognized. As a result, even if the front vehicle Cf moves forward in the right turn lane and brakes to make a right turn, the driver recognizes that he is driving in the right turn lane, so that an accident such as a rear-end collision can be prevented. Is possible. In addition, the arrow 13 may be irradiated including a part of the rear of the vehicle body of the front vehicle Cf.

  The optical system 100 including the optical device 1 according to the present embodiment includes a transmission unit 101 that transmits information on the type of lane. The transmission unit 101 may be provided in the signal S, the illumination lamp L, the sign M, or the like.

  Furthermore, in the optical system 100 including the optical device 1 of the present embodiment, the irradiated arrow may be information on all lanes or information on only the lane in which the vehicle C is traveling.

  FIG. 9 shows an operational state of an example related to the second example of the optical system of the present embodiment.

  In the example shown in FIG. 9, the content of the front lane display R is illuminated behind the host vehicle C in accordance with the type of lane transmitted from the transmission unit 101. That is, the arrow 13 is irradiated to the rear lower side of the host vehicle C according to the front lane display R. In this way, by illuminating the front lane display R behind the host vehicle C, the rear vehicle can recognize the type of the front lane, and an accident such as a rear-end collision can be prevented. . In addition, you may irradiate both the front lower part and the rear lower part.

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

  FIG. 10 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. 11 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 XX ′ 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. 5, the motor is driven to reflect the reflected light of the mirror 3 a, the first hologram region 41 of the hologram 40, and 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. 10, 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. 11, 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 arrow 13. 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 device 1 according to the present embodiment, the hologram reproduction image of the illumination light 11 and the arrow 15 is projected. For example, a hologram reproduction image of characters such as “STOP” and “BRAKE” is displayed. It is also possible to do.

  FIG. 12 shows another example of the irradiation unit of the first embodiment.

  As shown in FIG. 12, the mirror 3a, which is a kind 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. 13 illustrates an example of a unit unit of the irradiation unit according to the second embodiment. FIG. 14 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. 14A, 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. 14B, when the laser light from the second laser light source 22 is incident on 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.

  As shown in FIG. 14C, when the laser beam from the third laser light source 23 enters the third storage area 43 of the unit hologram 40 as 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.

  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 according to 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. 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. 15 shows illumination by the irradiation unit of the second embodiment.

  Each unit laser array 20 shown in FIG. 14 illuminates each irradiation region, and as shown in FIG. 15, 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. 15, 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. 16 is a side view of the irradiation unit in the first state according to the third embodiment. FIG. 17 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. 18 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. 17 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 receiving unit 5 shown in FIG. The control unit 7 acquires the area of the hologram 40 corresponding to the input content from the receiving 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 lane type signal is input from the receiving 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 receiving unit 5 that receives information ahead of the vehicle C, the light emitting unit 2 that is mounted on the vehicle and emits light, and the front of the vehicle C that the receiving unit 5 has received. According to the information, since the light emitting unit 2 includes the control unit 7 that controls the information on the front of the vehicle C to be projected onto the irradiation object, the driver can accurately grasp the information.

  Further, according to the optical device 1 of the present embodiment, the reception unit 5 receives the color of the signal S ahead of the vehicle C, and the control unit 7 emits the illumination light of the color S of the signal S ahead of the vehicle C. Therefore, even if the front signal S is not visible on the vehicle body of the front vehicle Cf, it is possible to recognize that the front signal S is red.

  Further, according to the optical device 1 of the present embodiment, the receiving unit 5 receives the type of lane ahead of the vehicle C, and the control unit 7 emits an arrow indicating the type of lane ahead of the vehicle C to the light emitting unit 2. Therefore, even if the front lane display R is not visible on the vehicle body of the front vehicle Cf, the front lane display R can be recognized.

  In addition, according to the optical device 1 of the present embodiment, at least information that is different from the first diffusion element area and the first diffusion element area that includes a set of element diffusion elements in which predetermined predetermined information is recorded is recorded. A diffusion unit 4 having a diffusion element divided into a second diffusion element region made up of a set of element diffusion elements, and the diffusion unit 4 diffuses coherent light emitted by the light emitting unit 2, It is possible to select from a predetermined shape and accurately irradiate the target region with light.

  Further, according to the optical device 1 of the present embodiment, the scanning unit 3 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 and the second diffusion element region; Therefore, the projection contents can be switched quickly and accurately.

  Furthermore, according to the optical system 100 of the present embodiment, the light emitting unit 2 projects the information ahead of the vehicle C to the outside of the vehicle C according to the information transmitted from the transmission unit 101 that transmits information and the transmission unit 101. Therefore, it is possible to make the driver accurately grasp the information.

  Although the optical device 1 and the optical system 100 have been described based on some 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 ... Reception part 6 ... Memory | storage part 7 ... Control part

Claims (3)

An irradiating unit mounted on a vehicle and irradiating light;
A transmission unit for transmitting color information of a signal in front of the vehicle;
A receiver that receives color information of a signal in front of the vehicle transmitted from the transmitter;
A control unit that controls the illumination unit to project illumination light of a signal color in front of the vehicle outside the vehicle; and
Equipped with a,
The irradiation unit is
A light emitting unit mounted on the vehicle for emitting coherent light;
At least a first diffusing element region comprising a set of element diffusing elements in which illumination information is recorded and a second diffusing element region comprising a set of element diffusing elements in which display information different from the first diffusing element region is recorded A diffusing unit that divides the coherent light emitted by the light emitting unit;
Have
The control unit emits light so as to include the first diffusion element region according to the color information of the signal ahead of the vehicle received by the reception unit, and emits illumination light of the color of the signal ahead of the vehicle The optical system , wherein the irradiation unit is controlled to project outside the vehicle . The transmission unit transmits information on the type of lane ahead of the vehicle,
The receiving unit receives the type of lane ahead of the vehicle,
The optical system according to claim 1, wherein the control unit causes the light emitting unit to emit an arrow indicating the type of lane ahead of the vehicle. 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;
The optical system according to claim 1, further comprising:

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