WO2016072483A1 - 光学装置 - Google Patents

光学装置 Download PDF

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Publication number
WO2016072483A1
WO2016072483A1 PCT/JP2015/081263 JP2015081263W WO2016072483A1 WO 2016072483 A1 WO2016072483 A1 WO 2016072483A1 JP 2015081263 W JP2015081263 W JP 2015081263W WO 2016072483 A1 WO2016072483 A1 WO 2016072483A1
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WO
WIPO (PCT)
Prior art keywords
unit
hologram
light
diffusion
region
Prior art date
Application number
PCT/JP2015/081263
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
夏織 中津川
牧夫 倉重
俊平 西尾
Original Assignee
大日本印刷株式会社
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Publication date
Application filed by 大日本印刷株式会社 filed Critical 大日本印刷株式会社
Priority to JP2016557819A priority Critical patent/JP6108140B2/ja
Publication of WO2016072483A1 publication Critical patent/WO2016072483A1/ja

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
    • G03H1/30—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
    • B60Q1/525—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/40—Indexing codes relating to other road users or special conditions
    • B60Q2300/45—Special conditions, e.g. pedestrians, road signs or potential dangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/50—Projected symbol or information, e.g. onto the road or car body
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2286—Particular reconstruction light ; Beam properties
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2249—Holobject properties
    • G03H2001/2263—Multicoloured holobject
    • G03H2001/2271—RGB holobject
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2286—Particular reconstruction light ; Beam properties
    • G03H2001/2292—Using scanning means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2222/00—Light sources or light beam properties
    • G03H2222/10—Spectral composition
    • G03H2222/17—White light
    • G03H2222/18—RGB trichrome light
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2222/00—Light sources or light beam properties
    • G03H2222/34—Multiple light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2227/00—Mechanical components or mechanical aspects not otherwise provided for
    • G03H2227/03—Means for moving one component

Definitions

  • the present invention relates to an optical device that can illuminate and display using hologram reproduction light.
  • the present invention also relates to an optical device capable of illuminating and displaying a predetermined shape and position.
  • an illumination control system in which the power system of incandescent lamps and LED light sources is linked to various sensors in the room, and the power is turned off when the person cannot pass, or the amount of light is adjusted by sensing outside light.
  • laser light sources particularly visible light lasers
  • advantages such as straightness, long life, high color purity, and high light emission efficiency, and are expected as next-generation light sources that are developed for displays, illumination, optical sensing, and the like.
  • the laser light source By applying the laser light source to the illumination field, it is possible to intelligently control a wider area and a higher light intensity illumination area.
  • a hologram is a device that can diffract light with high efficiency with respect to a design wavelength and is compatible with an LED, a laser, or the like.
  • holograms can be pre-recorded with various optical elements to provide beam shaping and homogenization functions, combined with lasers and variable control devices.
  • Various lighting systems can be constructed. In particular, it is a great advancement not only to turn on / off the power supply or adjust the amount of light, but also to be able to change the irradiation area, change the color, and display images and characters.
  • Patent Document 2 an apparatus for instructing the traveling direction of a vehicle based on map information has been proposed (see Patent Document 2).
  • a display device that is provided between a windshield and a driver seat and displays information has been proposed (see Patent Document 3).
  • Patent Document 4 an illumination signage system that increases the power when the illumination unit that illuminates the advertisement display unit when a movement of a person is detected.
  • JP 2012-230310 Japanese Patent No. 4561722 International Publication No. 2014/017129 JP 2014-220877 A
  • MEMS Micro Electro Mechanical System
  • polygon scanners that are usually used in optical scanning devices are expensive and the arrangement of the optical system may be complicated. Furthermore, since it is necessary to secure the output of the light source to some extent, it is expected that sufficient measures for heat dissipation should be taken into consideration.
  • the technique described in Patent Document 2 indicates a traveling direction based on information stored in advance, and does not correspond to a situation during traveling.
  • the technique described in Patent Document 3 displays information in the driver's field of view, the display method has directivity and has a limited viewing angle. For this reason, there are individual differences depending on the driver's physique and the like, and if the line of sight deviates from the designed standard driver's observation position, it is necessary to make a separate adjustment. In addition, when the viewpoint deviates from the range in which information can be observed due to the posture change during driving, the information itself cannot be observed.
  • Patent Document 5 illuminates the advertisement display section, and cannot change the position of the advertisement display section.
  • the present invention provides an optical device capable of illumination and display that can be easily and inexpensively manufactured with a simple structure without using a scanning device.
  • the present invention provides an optical device that allows the driver to accurately grasp the information by displaying information on the traveling direction of the traveling vehicle.
  • the present invention provides an optical device capable of illuminating a predetermined position with a predetermined shape and guiding a moving body to the predetermined position.
  • An optical device that achieves the above object is as follows.
  • An irradiating unit having at least a light emitting unit that emits light;
  • the irradiation unit and the control unit are mounted on a moving body,
  • the control unit is characterized in that the light emitting unit projects information on a traveling direction of the moving body to the outside of the moving body.
  • An optical device is A detector that detects a state of the moving body in the traveling direction; When the detection unit detects an abnormality, the control unit controls the light emitting unit to project information corresponding to the abnormality in the traveling direction.
  • the detection unit detects an obstacle or a road shoulder in the traveling direction of the moving body.
  • the control unit controls the light emitting unit to project information for the moving body to avoid the obstacle or the shoulder when the detecting unit detects an obstacle or a shoulder in the traveling direction of the moving body. It is characterized by that.
  • the traveling direction information is information for predicting a traveling locus of the moving body.
  • the irradiation unit is A diffusion unit having a diffusion element divided into at least a first diffusion element region in which predetermined information is recorded and a second diffusion element region in which information different from the first diffusion element region is recorded;
  • a scanning unit that scans the light so as to include at least one of the first diffusion element region and the second diffusion element region by changing an optical path of light emitted from the light emitting unit; It is characterized by providing.
  • the irradiation unit is A diffusion unit having a diffusion element divided into at least a first diffusion element region in which predetermined information is recorded and a second diffusion element region in which information different from the first diffusion element region is recorded;
  • a scanning unit in which the diffusing unit is movable such that light emitted from the light emitting unit scans at least one of the first diffusing element region and the second diffusing element region; It is characterized by providing.
  • An optical device is A detection unit for detecting a moving object; A storage unit for storing the correspondence between the position of the moving body detected by the detection unit and the irradiation area irradiated by the irradiation unit; With The control unit emits light to the irradiating unit based on the correspondence stored in the storage unit so as to guide the moving unit to a predetermined position when the detection unit detects the moving unit. It is characterized by irradiating.
  • the irradiation unit is A first diffusing element region comprising a set of element diffusing elements in which predetermined predetermined information is recorded and a second diffusing element region comprising a set of element diffusing elements in which information different from the first diffusing element region is recorded;
  • the coherent light that has at least a divided diffusion element, diffuses the coherent light emitted from the light emitting unit in the first diffusion element region, and irradiates the first irradiation region of a predetermined shape, and emits light from the light emitting unit.
  • a diffusion unit that diffuses light in the second diffusion element region and irradiates the second irradiation region of a predetermined shape;
  • the storage unit stores a correspondence relationship between the first diffusion element region and the first irradiation region, and the second diffusion element region and the second irradiation region, respectively.
  • the control unit irradiates at least the first diffusion element region or the second diffusion element region of the diffusion unit with the coherent light emitted from the light emitting unit.
  • An optical device is A scanning unit that scans so that light emitted from the light emitting unit is applied to at least one of the first diffusion element region and the second diffusion element region;
  • the control unit drives the scanning unit based on the correspondence relationship stored in the storage unit.
  • the irradiation unit irradiates an arrow.
  • An optical device that achieves the above object is as follows.
  • a light emitting unit that emits light;
  • a diffusion unit having a diffusion element divided into at least a first diffusion element region in which predetermined information is recorded and a second diffusion element region in which information different from the first diffusion element region is recorded;
  • a scanning unit in which the diffusing unit is movable such that light emitted from the light emitting unit scans at least one of the first diffusing element region and the second diffusing element region; It is characterized by providing.
  • the first diffusion element region is a set of first element diffusion elements
  • the second diffusion element region is a set of second element diffusion elements.
  • An optical device is The optical axis of the light from the light emitting unit and the optical axis of the illumination light from the diffusion element are parallel to each other.
  • the scanning unit may move the diffusion element in a one-dimensional direction.
  • the scanning unit may move the diffusion element in a two-dimensional direction.
  • the diffusion part is The diffusing element; A diffusing element frame surrounding the diffusing element; Have The scanning unit It has a supporting member which supports the diffusion element frame part.
  • the light emitting unit has a laser array having a plurality of laser light sources, The irradiation area of the laser array is smaller than the first diffusion element area and the second diffusion element area.
  • the light emitting unit selectively emits the plurality of laser light sources of the laser array, selectively illuminates the element diffusion element, and forms a predetermined irradiation region.
  • the light emitting unit includes a light uniform element that makes the luminance distribution of the illumination light from the diffusion element close to uniform.
  • the light emitting unit includes a light shaping element for shaping light.
  • An optical device is An input unit for instructing movement of the diffusion unit; A drive unit that moves the diffusion unit relative to the support member; A control unit that controls the drive unit in response to an instruction from the input unit; It is characterized by providing.
  • An optical device is A storage unit that stores a movement position of the diffusion element according to an instruction from the input unit is provided.
  • the light that has passed through the diffusing element projects illumination light.
  • the light passing through the diffusing element projects at least one of an image and characters.
  • the diffusion element is a hologram;
  • the first diffusion element region is a first hologram region;
  • the second diffusion element region is a second hologram region.
  • the diffusion element is a hologram;
  • the first diffusion element region is a first hologram region;
  • the second diffusion element region is a second hologram region;
  • the first hologram region is a set of first element holograms;
  • the second hologram region is a set of second element holograms.
  • an optical device capable of illumination and display that can be easily and inexpensively manufactured with a simple structure.
  • optical device of the present invention it is possible to make the driver recognize the possibility of an unexpected situation and to call attention to avoid danger.
  • optical device of the present invention it is possible to illuminate a predetermined position with a predetermined shape, and to guide the moving body to the predetermined position.
  • working in a 2nd state is shown. It is a side view in the 1st state of the optical apparatus of 3rd Embodiment. It is a side view in the 2nd state of the optical apparatus of 3rd Embodiment. It is another example of the optical apparatus of 3rd Embodiment. It is a side view in the 1st state of the optical apparatus of 4th Embodiment. It is a front view in the 1st state of the optical apparatus of 4th Embodiment. It is a front view in the 2nd state of the optical apparatus of 4th Embodiment. 4 shows an optical device according to another embodiment. The specific structure of the optical apparatus of other embodiment is shown.
  • FIG. 10 shows an optical device according to a fifth embodiment.
  • the system diagram of the optical apparatus of 5th Embodiment is shown.
  • movement flowchart of the optical apparatus of 5th Embodiment is shown.
  • the operating state of the optical apparatus of 5th Embodiment is shown. It is a side view in the 1st state of the irradiation part of the 1st Example used for the optical apparatus of 5th Embodiment. It is a side view in the 2nd state of the irradiation part of the 1st Example used for the optical apparatus of 5th Embodiment. The other example of the irradiation part of the 1st Example used for the optical apparatus of 5th Embodiment is shown.
  • An example of the unit unit of the irradiation part of 2nd Example used for the optical apparatus of 5th Embodiment is shown. It is a figure explaining the illumination by the unit unit of the irradiation part of 2nd Example used for the optical apparatus of 5th Embodiment. The illumination by the irradiation part of the 2nd Example used for the optical apparatus of 5th Embodiment is shown. It is a side view in the 1st state of the irradiation part of the 3rd Example used for the optical apparatus of 5th Embodiment. It is a front view in the 1st state of the irradiation part of the 3rd Example used for the optical apparatus of 5th Embodiment. It is a front view in the 2nd state of the irradiation part of the 3rd Example used for the optical apparatus of 5th Embodiment.
  • FIG. 1 is a side view of the optical device according to the first embodiment in a first state.
  • FIG. 2 is a front view of the optical device according to the first embodiment in the first state.
  • the optical device 1 includes a light emitting unit 2 that emits coherent laser light having directivity and a predetermined wavelength, a support unit 3 that supports the hologram unit 4 movably, and a hologram 40.
  • the hologram unit 4 the input unit 5 composed of a switch or various sensors, the storage unit 6 storing the region of the hologram unit 4 corresponding to the input content of the input unit 5, the input unit 5 and the storage unit 6
  • a control unit 7 that drives the drive unit 8 and a drive unit 8 that drives the hologram unit 4 are provided.
  • the light emitting unit 2 emits a coherent laser beam having directivity and a predetermined wavelength.
  • the light emitting unit 2 includes a laser array 20 in which a plurality of laser light sources 20a are bundled.
  • the light emission part 2 may be what can irradiate the laser beam of a some wavelength.
  • illumination light or display light can be colored by irradiating laser beams corresponding to R (red), G (green), and B (blue), respectively.
  • FIG. 3 is a side view of an example of a color of the optical device according to the first embodiment.
  • FIG. 4 is a side view of another example of the collar of the optical device according to the first embodiment.
  • the light source other than the corresponding wavelength of the hologram 40 installed in the irradiated hologram unit 4 may be turned off in order to prevent color mixing.
  • the power source of the R light source 20r and the G light source 20g may be turned off, and the power source of only the B light source 20b may be turned on.
  • light from a light source other than the corresponding wavelength may be masked using the movable shutter 23 or the like in the optical system.
  • the R shutter 23r and the B shutter 23b may be closed and only the G shutter 23g may be opened.
  • a light uniformizing element 21 such as an integrator rod or a fly integrator may be arranged.
  • a light shaping element 22 for shaping light such as a collimator lens or a light shielding mask may be included between the light emitting unit 2 and the hologram unit 4, for example, between the laser array 20 and the hologram 40.
  • the light emitting unit 2 may be capable of controlling the light emission of each laser light source 20a, and may be able to reproduce by selectively irradiating an element hologram that is a unit region of the hologram 40. As described above, by selectively controlling the laser light source 20a of the light emitting unit 2, predetermined illumination light or information display can be selectively formed.
  • the support unit 3 supports the hologram unit 4 so as to be movable.
  • the support part 3 in the optical device 1 according to the first embodiment includes a support rail 31 as an outer frame part that supports the hologram part 4 so as to be movable in the vertical direction.
  • the hologram unit 4 has a hologram 40 including at least a first hologram area 41 and a second hologram area 42. Different information is recorded in the first hologram area 41 and the second hologram area 42, and when laser light is incident from the light emitting unit 2, light including different information is emitted. For example, the light emitted from the first hologram area 41 and the second hologram area 42 projects different illumination ranges, display images, characters, or the like.
  • the first hologram area 41 and the second hologram area 42 are respectively element holograms in which predetermined information is recorded (element holograms in the first hologram area are first element holograms and element holograms in the second hologram area are second elements). It may be composed of a set of element holograms.
  • the first hologram area 41 and the second hologram area 42 are supported by the hologram frame 4a.
  • the hologram frame 4 a is supported so as to be movable with respect to the support rail 31.
  • the shape of the hologram 40 is not limited to a square but may be a polygon or a circle.
  • the hologram 40 may be a volume hologram using a photopolymer, a volume hologram recording medium of a type recorded using a photosensitive medium containing a silver salt material, or a relief (embossed) hologram. Good. Although these hologram manufacturing methods are photographed using object light and reference light, they may be designed using a computer based on design information. The hologram thus obtained is also called a computer generated hologram (CGH). In the present embodiment, the transmission hologram is used for all description, but a reflection hologram may be used.
  • CGH computer generated hologram
  • the hologram 40 is designed or arranged so that the optical axis of the light beam incident on the hologram 40 from the light emitting unit 2 is parallel to the optical axis of the reference light or reproduction illumination light of the hologram 40. And the support part 3 is provided so that the hologram 40 can move within the plane parallel to the normal line of the optical axis of the reproduction illumination light of the hologram 40. By arranging in this way, the hologram 40 can move in a one-dimensional or two-dimensional manner and further in a circular shape within the normal plane of the optical axis.
  • all the holograms 40 of the present embodiment have an incident angle of the reproduction illumination light of 0 ° and are perpendicular to the surface of the hologram 40, but it is not necessary to limit to this angle. Further, the hologram 40 may be capable of moving in a one-dimensional or two-dimensional manner and further in a circular shape within the plane of the hologram 40 itself.
  • the input unit 5 is a switch or various sensors operated by the operator, and inputs a detection signal to the control unit 6.
  • the input unit 5 includes a headlight switch or an obstacle sensor that detects an obstacle.
  • the storage unit 6 stores a region of the hologram unit 4 corresponding to the input content of the input unit 5. For example, the storage unit 6 stores that the first hologram region 41 of the hologram unit 4 is set when an instruction to switch to a high beam is input from the headlight switch. Note that the storage unit 6 may be included in the control unit 7.
  • the control unit 7 drives the drive unit 8 in accordance with instructions from the input unit 5 and the storage unit 6.
  • the drive unit 8 includes an actuator that moves the hologram frame 4 a of the hologram unit 4 along the support rail 31 of the support unit 3.
  • the drive unit 8 includes a motor and a ball screw or an electromagnetic solenoid.
  • FIG. 5 is a side view of the optical device according to the first embodiment in the second state.
  • FIG. 6 is a front view of the optical device according to the first embodiment in the second state.
  • a switching signal is input from the input unit 5 to the control unit 7.
  • the control unit 7 acquires the area of the hologram unit 4 corresponding to the input content of the input unit 5 from the storage unit 6. Thereafter, the control unit 7 drives the drive unit 8 so that the region of the hologram unit 4 acquired from the storage unit 6 is irradiated from the light emitting unit 2.
  • the control unit 7 displays an area corresponding to the low beam. A signal stored in the storage unit 6 that is the second hologram region 42 is acquired. Then, the control unit 7 drives the drive unit 8 so that the second hologram region 42 of the hologram unit 4 is irradiated from the light emitting unit 2.
  • the first hologram area 41 and the second hologram area 42 may overlap.
  • the light emitting unit 2 irradiates the portion where the first hologram region 41 and the second hologram region 42 overlap, the incident light is emitted from the first hologram region 41 and the second hologram region 42, respectively.
  • the light irradiated from the light emitting unit 2 may straddle the first hologram region 41 and the second hologram region 42.
  • the incident light is emitted from the first hologram region 41 and the second hologram region 42, respectively.
  • optical device 1 of the first embodiment it is possible to provide a projectable optical device 1 that can be manufactured easily and inexpensively with a simple structure.
  • FIG. 7 is a front view of the optical device according to the second embodiment in the first state.
  • the optical device 1 according to the second embodiment includes a light emitting unit 2, a support unit 3, a hologram unit 4, an input unit 5, a control unit 6, a storage unit 7, and a drive unit 8.
  • the optical device 1 according to the second embodiment enables the hologram unit 4 to move in two dimensions.
  • the light emitting unit 2 irradiates a coherent laser beam having a predetermined wavelength and having a directivity.
  • the light emitting unit 2 may be a laser array in which a plurality of elements are bundled.
  • the light emission part 2 may be what can irradiate the laser beam of a some wavelength.
  • illumination light or display light can be colored by irradiating laser beams corresponding to RGB.
  • the support part 3 is a member that supports the hologram part 4 so as to be movable.
  • the support unit 3 in the optical device 1 of the second embodiment guides the hologram unit 4 so as to be movable two-dimensionally with respect to the support rail 31 as an outer frame unit surrounding the outer periphery of the hologram unit 4.
  • a guide rail 32 as a guide portion.
  • the guide rails 32 are movably supported by the support rails 31 facing both ends, and each side of the hologram unit 4 is movably supported by the respective guide rails 32. That is, the hologram unit 4 can move two-dimensionally with respect to the support unit 3.
  • the hologram unit 4 has a hologram 40 including a first hologram area 41 to a ninth hologram area 49. Different information is recorded in each region from the first hologram region 41 to the ninth hologram region 49, and when laser light is incident from the light emitting unit 2, light including different information is emitted. For example, the emitted light from the first hologram area 41 to the ninth hologram area 49 projects different illumination ranges, display images, characters, or the like.
  • the first hologram area 41 to the ninth hologram area 49 are supported by the hologram frame 4a.
  • the hologram frame 4 a is supported so as to be movable with respect to the guide rail 32.
  • the input unit 5 is a switch or various sensors operated by the operator, and inputs a detection signal to the control unit 6.
  • the input unit 5 includes a character display changeover switch or a brake sensor.
  • the storage unit 6 stores a region of the hologram unit 4 corresponding to the input content of the input unit 5. For example, the storage unit 6 stores the ninth hologram area 49 of the hologram unit 4 when an instruction to irradiate a predetermined character is input from the character display changeover switch. Note that the storage unit 6 may be included in the control unit 7.
  • the control unit 7 drives the drive unit 8 in accordance with instructions from the input unit 5 and the storage unit 6.
  • the drive unit 8 includes an actuator that moves the hologram frame 4 a of the hologram unit 4 along the support unit 3.
  • the drive unit 8 includes a motor and a ball screw or an electromagnetic solenoid.
  • FIG. 8 is a front view of the optical device according to the second embodiment in the second state.
  • a switching signal is input from the input unit 5 to the control unit 7.
  • the control unit 7 acquires the area of the hologram unit 4 corresponding to the input content of the input unit 5 from the storage unit 6. Thereafter, the control unit 7 drives the drive unit 8 so that the region of the hologram unit 4 acquired from the storage unit 6 is irradiated from the light emitting unit 2.
  • control unit 7 when an instruction to change to illumination light is input from the fifth hologram region 45 to the control unit 7, the control unit 7 stores in the storage unit 6 that the region corresponding to the illumination light 13 is the sixth hologram region 46. Get the stored signal. Then, the control unit 7 drives the drive unit 8 so that the sixth hologram region 46 of the hologram unit 4 is irradiated from the light emitting unit 2.
  • the optical device 1 of the second embodiment it is possible to quickly and accurately switch the projection contents according to the input. Also, it becomes possible to accurately illuminate a predetermined position.
  • FIG. 9 is a front view of the optical device according to the second embodiment in the third state.
  • FIG. 10 is a front view of the optical device according to the second embodiment in the fourth state.
  • the hologram unit 4 may record information for displaying an image 14 and a character 15 respectively.
  • information for displaying the predetermined image 14 is recorded in the seventh hologram region 47 of the hologram unit 4.
  • the control unit 7 drives the drive unit 8 so that the seventh hologram region 47 of the hologram unit 4 is irradiated from the light emitting unit 2.
  • information for displaying a predetermined character 15 is recorded in the ninth hologram region 49 of the hologram unit 4.
  • the control unit 7 drives the drive unit 8 so that the ninth hologram region 49 of the hologram unit 4 is irradiated from the light emitting unit 2.
  • the optical device 1 of the second embodiment it is possible to accurately project predetermined predetermined information.
  • FIG. 11 is a front view of the optical device according to the second embodiment in the fifth state.
  • the hologram unit 4 may record information for simultaneously displaying the illumination light 13, the image 14, and the characters 15. For example, in the example shown in FIG. 11, information for displaying the predetermined illumination light 13 is recorded in the sixth hologram region 46 of the hologram unit 4, and the predetermined hologram 15 is stored in the ninth hologram region 49 of the hologram unit 4. Information to be displayed is recorded. Then, the control unit 7 drives the drive unit 8 so that both the sixth hologram region 46 and the ninth hologram region 49 of the hologram unit 4 are irradiated from the light emitting unit 2. Then, the illumination light 13 is displayed from the sixth hologram area 46 and the character 15 is displayed from the ninth hologram area 49. Each display position can be set and does not need to be overlapped, and may be set to a position where it is displayed alone.
  • optical device 1 of the second embodiment more information can be projected at a time.
  • the light emitting unit 2 that emits coherent light is different from at least the first hologram area 41 and the first hologram area 41 in which predetermined information is recorded in advance.
  • the hologram part 4 having the hologram 40 including the second hologram area 42 in which information is recorded, and the light emitted from the light emitting part 2 includes at least one of the first hologram area 41 and the second hologram area 42. Since the support member 3 that movably supports the hologram unit 4 is provided, it is possible to provide a projectable optical device 1 that can be easily and inexpensively manufactured with a simple structure.
  • the first hologram area 41 and the second hologram area 42 are each composed of a set of element holograms. It becomes possible to perform predetermined illumination or information display on the area.
  • the optical device 1 of the first or second embodiment since the optical axis of the light from the light emitting unit 2 and the optical axis of the reproduction illumination light for reproducing the hologram 40 are parallel, it can be set easily. Is possible.
  • the support member supports the hologram unit so as to be movable in a one-dimensional direction, so that the projection content can be quickly switched.
  • the support member 3 supports the hologram unit 4 so as to be movable in a two-dimensional direction, so that it is possible to quickly switch many projection contents. .
  • the hologram unit 4 includes the hologram 40 and the hologram frame 4a surrounding the hologram 40, and the support member 3 includes the hologram frame 4a. Since it supports, it becomes possible to switch the projection content accurately.
  • the light emitting unit 2 includes a laser array having a plurality of laser light sources, and the irradiation area of the laser array includes the first hologram area 41 and the second hologram area. Since it is smaller than 42, it becomes possible to project each hologram area.
  • the light emitting unit 2 selectively emits the plurality of laser light sources 20a of the laser array 20, selectively illuminates the element hologram, and performs predetermined irradiation. Since the region is formed, predetermined illumination or information display can be performed in the predetermined region.
  • the light emitting unit 2 includes the light uniform element 21 that makes the luminance distribution of the hologram reproduction light uniformly approach, so that light unevenness can be reduced and clearly illuminated or It is possible to display information.
  • the light emitting unit 2 since the light emitting unit 2 includes the light shaping element 22 that shapes the light, it is possible to easily irradiate a predetermined position of the hologram 40. .
  • the input unit 2 that instructs the movement of the hologram unit 4, the drive unit 8 that moves the hologram unit 4 with respect to the support member 3, and the input unit 2.
  • a control unit 7 that controls the drive unit 6 in response to an instruction from the projector, so that the projection content can be switched quickly and accurately in accordance with the input.
  • the storage unit 6 that stores the movement position of the hologram unit 4 according to the instruction of the input unit 2 since the storage unit 6 that stores the movement position of the hologram unit 4 according to the instruction of the input unit 2 is provided, the content of the projection can be further quickly determined according to the input. It becomes possible to switch accurately.
  • the light that has passed through the hologram 40 projects the illumination light 13, so that it is possible to accurately illuminate a predetermined position.
  • the light that has passed through the hologram 40 projects at least one of the image 14 and the character 15, so that it is possible to accurately project predetermined predetermined information.
  • FIG. 12 shows the operation of the optical device in the first state of the third or fourth embodiment.
  • FIG. 13 shows a view from the driver's seat during traveling in the first state.
  • the optical device 101 is mounted on the vehicle C, and irradiates the irradiation light 110 onto the road surface of the outdoor road D.
  • the irradiation light 110 forms, for example, a vehicle width guide 111, illumination light 112, a steering guide 113, and the like. As shown in FIG. 12, it is preferably used when a vehicle C travels on a road D sandwiched by a boundary B with a shoulder A.
  • the boundary B is a boundary between a vehicle travelable area and an impossible area such as a median strip or a separation line with a pedestrian.
  • the first state is a state in which the vehicle travels normally in a straight line without jumping out from the road D to the shoulder A even if it goes straight ahead.
  • the vehicle in the present embodiment includes a vehicle that runs only with the driving force of the gasoline engine, a vehicle that runs with the driving force of the gasoline engine and the motor, a vehicle that runs only with the driving force of the motor, or a diesel engine.
  • a vehicle that travels with the driving force is included.
  • the optical device 101 of the present invention can be mounted on a two-wheeled vehicle or the like.
  • motorcycles include not only motorcycles but also bicycles.
  • the optical device 101 of the present invention can be mounted on various moving bodies as described above.
  • the present invention can also be applied to general moving means, airplanes, ships and the like that require a driver to steer even temporarily.
  • a driver (not shown) can drive through the front window W while confirming the traveling direction with the vehicle width guide 111, the illumination light 112, and the steering guide 113.
  • the vehicle width guide 111 is irradiated with a straight line having a width direction at least larger than the vehicle width of the vehicle C and parallel to the traveling direction of the vehicle. If the direction is clearly indicated, a dotted line, a broken line, or a wavy line may be used.
  • the steering guide 113 is indicated by an arrow, and indicates the traveling direction of the vehicle (upward is straight in the figure) in the first state. In the second state, the arrow tilts to the right or left, suggesting that the steering be rotated in the same direction as the tilt angle direction of the arrow.
  • the vehicle width guide 111, the illumination light 112, and the steering guide 113 are information on the traveling direction, and are information for predicting the traveling locus of the vehicle C.
  • the illumination light 112 is different from the light illuminated from the illumination lamp of the vehicle C.
  • FIG. 14 is a system diagram of the optical device according to the third or fourth embodiment.
  • the optical device 101 includes a light emitting unit 102, a scanning unit 103, a diffusion unit 104, a storage unit 106, and a control unit 107.
  • solid arrows indicate the exchange of signals between the components.
  • a dotted arrow indicates that the incident position of the light emitted from the light emitting unit 102 on the diffusion unit 104 is adjusted by the scanning unit 103.
  • the light emitting unit 102 emits coherent laser light having a predetermined wavelength and directivity.
  • the light emitting unit 102 may be a laser array in which a plurality of elements are bundled.
  • the light emitting unit 102 may include laser beams having a plurality of wavelengths.
  • 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.
  • the light emitting unit 102 may be capable of irradiating laser beams having a plurality of wavelengths.
  • illumination light or display light can be colored by irradiating laser beams corresponding to R (red), G (green), and B (blue), respectively.
  • color notation may be performed with two or more types of non-limiting light sources.
  • the scanning unit 103 has a function of causing light from the light emitting unit 102 to enter a predetermined position on the incident surface of the diffusing unit 104.
  • 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 104 using reflection or refraction.
  • it is a member called an optical scanner such as a MEMS (Micro Electro Mechanical System) scanner or a polygon scanner, but is not limited thereto.
  • the scanning unit 103 may be a member that supports the diffusion unit 104 so as to be movable.
  • the diffusion unit 104 includes a diffusion element 140, and the diffusion element 140 is an aggregate composed of a plurality of element diffusion elements.
  • the diffusion element 140 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 above element hologram is produced by using 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.
  • 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.
  • the hologram obtained in this way is called a computer generated hologram (CGH).
  • CGH computer generated hologram
  • 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 140 is that the light energy density of the laser beam can be reduced by diffusion and can be used as a directional surface light source.
  • the light source luminance for realizing the illuminance distribution can be lowered. Therefore, distant illumination is possible more safely.
  • the diffusion element 140 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 105 is various sensors such as infrared rays and millimeter wave radars, and inputs detection signals to the control unit 106.
  • the detection unit 105 detects an obstacle or the like in the vehicle width guide 111 in the traveling direction.
  • the storage unit 106 stores an area of the hologram unit 104 corresponding to the detection content of the detection unit 105. Note that the storage unit 106 may be included in the control unit 107.
  • the control unit 107 drives the scanning unit 103 in accordance with instructions from the detection unit 105 and the storage unit 106.
  • FIG. 15 shows the operation of the optical device in the second state of the third or fourth embodiment.
  • FIG. 16 shows a view from the driver's seat during traveling in the second state.
  • the second state is a state in which the vehicle travels straight ahead and may jump out of the road D to the shoulder A if it goes straight ahead.
  • the detection unit 105 detects the tip and the boundary B of the left vehicle width guide 111L.
  • an instruction is issued from the control unit 107 to the scanning unit 103.
  • the optical device 101 of this embodiment is inclined toward the right vehicle width guide 111R so that the direction of the arrow of the steering guide 113 avoids the detection of the boundary B.
  • the direction of the arrow of the steering guide 113 is tilted to the right and displayed.
  • the driver (not shown) confirms the steering guide 113 with the arrow inclined through the front window W. Thereafter, if the driver turns the upper side of the steering wheel S in the direction inclined by the arrow, the driver returns to the first state shown in FIGS. 12 and 13 and can travel straight along the boundary B of the road D. Become.
  • optical device of the third or fourth embodiment it is possible to allow the driver to accurately grasp the information and to avoid a difficult situation.
  • FIG. 17 is a side view of the optical device according to the third embodiment in the first state.
  • FIG. 18 is a side view of the optical device according to the present embodiment in the second state.
  • the irradiation light from the light emitting unit 102 is reflected by a mirror 131 that is one type of the scanning unit 103 and is incident on the transmission hologram 140 of the diffusing element 140.
  • the mirror 131 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.
  • the motor is driven and the reflected light of the mirror 131 is converted into the first hologram area 141 and the second hologram 140 of the hologram 140. It can be applied to any one of the hologram regions 142.
  • “turning” means that an object turns around a certain axis within a restricted angle range.
  • the light emitted from the light emitting unit 102 is reflected by the mirror 131, passes through the first hologram region 141, and moves to the arrow. Is displayed. Then, in the second state in which the mirror 131 shown in FIG. 18 is rotated, the light emitted from the light emitting unit 102 is reflected by the mirror 131, passes through the second hologram region 142, and is different from the first state. Display an arrow pointing to.
  • the hologram reproduction image of the arrows having different directions is projected onto the road surface.
  • the hologram reproduction image of characters such as “STOP” and “BRAKE” is displayed. It is also possible to make it.
  • FIG. 19 shows another example of the optical device according to the third embodiment.
  • the mirror 131 which is a kind of the scanning unit 103 may be configured to be rotatable with respect to the first axis 103a and the second axis 103b orthogonal to the first axis 103a. Also in this case, it is possible to project a plurality of hologram reproduction images with one optical device 101.
  • FIG. 20 is a side view of the optical device 101 according to the fourth embodiment in the first state.
  • FIG. 21 is a front view of the optical device 101 according to the fourth embodiment in the first state.
  • the scanning unit 103 in the optical device 101 of the fourth embodiment can move the hologram 140 two-dimensionally with respect to the support rail 131 as an outer frame portion surrounding the outer periphery of the hologram 140 as the diffusion element 140 and the support rail 131.
  • a guide rail 132 as a guide part for guiding to.
  • the guide rails 132 are movably supported by the support rails 131 opposed at both ends, and each side of the hologram 140 is movably supported by the respective guide rails 132. That is, the incident light from the light emitting unit 102 does not change its position, but the incident light can selectively enter a predetermined position of the hologram 140 by changing the position of the hologram 140 itself.
  • the fifth hologram region 145 of the diffusing element 104 is irradiated from the light emitting unit 102, and an arrow is irradiated in a predetermined direction.
  • FIG. 22 is a front view of the optical device according to the fourth embodiment in the second state.
  • a switching signal is input to the control unit 107 from the detection unit 105 illustrated in FIG.
  • the control unit 107 acquires the area of the hologram 140 corresponding to the input content from the detection unit 105 from the storage unit 106.
  • the control unit 107 drives the scanning unit 103 so that the region of the hologram 140 acquired from the storage unit 106 is irradiated from the light emitting unit 102.
  • a signal that detects an obstacle in the vehicle width guide 111 in the traveling direction is input from the detection unit 105 to the control unit 107.
  • the control unit 107 acquires a signal stored in the storage unit 106 that the region in which the direction of the arrow is changed is the sixth hologram region 146. Then, the control unit 107 drives the scanning unit 103 so that the sixth hologram region 146 of the hologram 140 is irradiated from the light emitting unit 102.
  • the optical device 101 of the fourth embodiment it is possible to quickly and accurately switch the projection content according to the change in the operating state. Also, it becomes possible to accurately illuminate a predetermined position.
  • FIG. 23 shows an optical apparatus according to another embodiment.
  • FIG. 24 shows a specific structure of an optical device according to another embodiment.
  • 23 and 24 show a state in which an obstacle such as a ball E has entered the traveling direction of the vehicle C.
  • a signal that detects the ball E in the vehicle width guide 111 in the traveling direction is input to the control unit 107 from the detection unit 105 illustrated in FIG.
  • the control unit 107 acquires the area of the hologram 140 that illuminates the position of the ball E from the storage unit 106. Then, the control unit 107 drives the scanning unit 103 so that the region of the hologram 140 is irradiated from the light emitting unit 102.
  • the optical device 101 of another embodiment it is possible to quickly project the vehicle C in the traveling direction.
  • the area of the hologram 140 requires at least a first hologram 141 that displays a traveling direction during normal traveling, and a second hologram 142 that has a corresponding wavelength and a shape of an irradiation area different from those of the first hologram 141 when an abnormality is detected.
  • the light emitting unit 102 that is mounted on the vehicle C and emits light
  • the control unit that controls the light emitting unit 102 to project information on the traveling direction of the vehicle C to the outdoors. 107, the driver can be made to accurately grasp the information.
  • the detection unit 151 that detects the state of the traveling direction of the vehicle, and the control unit 107 are configured so that the light emitting unit 102 is detected when the detection unit 151 detects an abnormality. Since control is performed so that information corresponding to the abnormality is projected in the traveling direction, it becomes possible for the driver to accurately grasp the abnormality information.
  • the detection unit 151 detects an obstacle or a road shoulder in the traveling direction of the vehicle C, the vehicle C avoids the obstacle or the road shoulder. Therefore, it is possible to avoid a difficult situation because the light emitting unit 102 is controlled to project information for the purpose.
  • the information is information for predicting the traveling locus of the vehicle C
  • the driver can be made aware of the position where the vehicle C will travel from now. Become.
  • the detection unit 151 detects an obstacle or a road shoulder in the traveling direction of the vehicle C, the vehicle C avoids the obstacle or the road shoulder. Therefore, it is possible to avoid a difficult situation quickly because the light emitting unit 102 is controlled to project information.
  • the optical device 101 of the third or fourth embodiment at least information different from the first hologram area 141 and the first hologram area 141 formed of a set of element holograms in which predetermined information is recorded in advance.
  • the first hologram area 141 and the second hologram area are reflected by reflecting the light emitted from the light emitting section 102 and the diffusion section having the hologram 140 divided into the second hologram area 142 made up of a set of element holograms on which are recorded. Since the scanning unit 103 that scans the light so as to include at least one of 142 is provided, it is possible to quickly and accurately switch the projection content according to the input. Also, it becomes possible to accurately illuminate a predetermined position.
  • the optical device 101 of the third or fourth embodiment at least information different from the first hologram area 141 and the first hologram area 141 formed of a set of element holograms in which predetermined information is recorded in advance.
  • the hologram unit 104 having the hologram 140 divided into the second hologram region 142 composed of a set of element holograms recorded with the light, and the light emitted from the light emitting unit 102 out of the first hologram region 141 and the second hologram region 142 Since the scanning unit 103 movably supports the hologram unit 104 so as to scan at least one, the projection content can be switched quickly and accurately according to the input. Also, it becomes possible to accurately illuminate a predetermined position.
  • the driver not only the driver but also the people around the moving body can visually inform the traveling direction information of the vehicle and the abnormality detected by the detection unit, which can contribute to traffic safety.
  • FIG. 25 shows the optical device of the fifth embodiment.
  • the optical device 201 of the fifth embodiment is installed in a store S or the like as an example.
  • a display 211 such as a store name is irradiated on the road surface D of the road during normal times.
  • what is necessary is just to irradiate a passage when the shop S exists indoors.
  • FIG. 26 shows a system diagram of the optical apparatus 201 of the fifth embodiment.
  • the optical device 201 includes a detection unit 205, a storage unit 206, a control unit 207, and an irradiation unit 210.
  • the light emitting unit 202 emits a coherent laser beam having a directivity and a predetermined wavelength.
  • the light emitting unit 202 may be a laser array in which a plurality of elements are bundled.
  • the light emitting unit 202 may include laser beams having a plurality of wavelengths.
  • 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.
  • the light emitting unit 202 may be capable of irradiating laser beams having a plurality of wavelengths.
  • illumination light or display light can be colored by irradiating laser beams corresponding to R (red), G (green), and B (blue), respectively.
  • color notation may be performed with two or more types of non-limiting light sources.
  • the scanning unit 203 has a function of causing light from the light emitting unit 202 to enter a predetermined position on the incident surface of the diffusing unit 204.
  • 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.
  • it is a member called an optical scanner such as a MEMS (Micro Electro Mechanical System) scanner or a polygon scanner, but is not limited thereto.
  • the scanning unit 203 may be a member that supports the diffusion unit 204 so as to be movable. Note that the scanning unit 203 may be configured by controlling the light emission of the light emitting unit 202 such as a laser array.
  • the diffusing unit 204 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 irradiated region. 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 above element hologram is produced by using 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.
  • 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.
  • the hologram obtained in this way is called a computer generated hologram (CGH).
  • CGH computer generated hologram
  • 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 detecting unit 205 includes a solar radiation sensor 251 that detects ambient light and darkness, a receiving unit 252 that receives radio waves and the like, and a moving body sensor 253 that detects a moving body.
  • the solar radiation sensor 251 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 252 receives a predetermined electromagnetic wave such as a predetermined infrared ray or millimeter wave radar transmitted from, for example, an automobile or a pedestrian.
  • the moving body sensor 253 detects a moving body that moves.
  • the moving body of the embodiment includes a vehicle that travels only by the driving force of the gasoline engine, a vehicle that travels by the driving force of the gasoline engine and the motor, a vehicle that travels only by the driving force of the motor, or a diesel engine.
  • a vehicle that travels with the driving force is included.
  • the moving body includes a two-wheeled vehicle, and the two-wheeled vehicle includes not only a motorcycle but also a bicycle. That is, the moving body includes various moving objects as described above.
  • the present invention can also be applied to general moving means, airplanes, ships and the like that require a driver to steer even temporarily.
  • the storage unit 206 stores a control method of the irradiation unit 210 corresponding to the input content of the detection unit 205.
  • the storage unit 206 stores a method for controlling the irradiation unit 210 corresponding to the irradiation region where the light is irradiated.
  • the storage unit 206 may be included in the control unit 207.
  • the control unit 207 controls the irradiation unit 210 according to signals from the detection unit 205 and the storage unit 206.
  • the irradiation unit 210 has a structure capable of controlling the irradiation type, irradiation direction, and the like.
  • FIG. 27 shows an example of an operation flowchart of the optical apparatus 201 according to the third example of the fifth embodiment.
  • FIG. 28 shows the operating state of the optical device 201 of the fifth embodiment.
  • YES determination is expressed as “Y”
  • No determination is expressed as “N”.
  • step 1 it is determined whether or not the detection unit 205 senses a moving object (ST1).
  • the detection unit 205 is, for example, a camera, infrared rays, or ultrasonic waves, and detects the pedestrian M or the like. Moreover, it is good also as a structure which detects the electromagnetic wave corresponding to what transmits an electromagnetic wave etc.
  • step 1 when the detection unit 5 senses a moving body, in step 2, the irradiation area irradiated by the irradiation unit 210 is confirmed (ST2).
  • the irradiation area is determined corresponding to the position of the moving body. For example, in the example shown in FIG. 28, when a pedestrian M1 walking from the right toward the store S is detected, the first arrow 213a toward the store S is irradiated, and the store S is walked from the left. When the pedestrian M2 is detected, the second arrow 213b toward the store S is irradiated. Moreover, it is preferable to irradiate the message display 212 at the entrance of the store S regardless of which pedestrian M1, M2 is detected.
  • step 3 the operation count of the optical device 201 is started (ST3). Subsequently, in step 4, it is determined whether or not a predetermined time has passed (ST4). If the predetermined time has not elapsed in step 4, the process returns to step 4. In step 4, when the predetermined time has elapsed, the process returns to step 1.
  • step 1 when the detection unit 205 does not sense the moving body, the control is terminated.
  • the optical device 201 can set a large number of irradiation areas in advance. Therefore, when the moving body is detected, the illumination light 211 is set with the position where the moving body is moving as the irradiation area. Alternatively, the display 212 and the like can be accurately irradiated. And it becomes possible to guide pedestrian M1, M2 to the shop S exactly.
  • the store S is shown as an example, but it may be installed in any other place such as a station, a theme park, an event venue, and the like.
  • FIG. 29 is a side view of the irradiation unit 210 of the first example used in the optical device 201 of the fifth embodiment in the first state.
  • FIG. 30 is a side view of the irradiation unit 210 of the first example used in the optical device 201 of the fifth embodiment in the second state.
  • the irradiation light from the light emitting unit 202 is reflected by the mirror 203a which is one type of the scanning unit 203 and is incident on the transmission hologram 240 of the diffusing element 240.
  • the mirror 203a 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.
  • the motor is driven, and the reflected light of the mirror 203a is converted into the first hologram region 241 of the hologram 240, the second hologram. It can be applied to any of the areas 242.
  • “turning” means that an object turns around a certain axis within a restricted angle range.
  • each hologram area 241 and 242 constitutes a diffusion element area.
  • Each hologram area 241 and 242 is composed of a set of element diffusion elements.
  • a single optical device 201 can project a plurality of hologram reproduction images.
  • the hologram reproduction image indicated by the illumination light 211 and the arrow 213 is projected.
  • a character hologram reproduction image such as “STOP” or “BRAKE” is displayed. It is also possible to make it.
  • FIG. 31 shows another example of the irradiation unit of the first example used in the optical device 201 of the fifth embodiment.
  • the mirror 203a which is a kind of the scanning unit 203 may be configured to be rotatable with respect to the first axis 203x and the second axis 203y orthogonal to the first axis 203x. Also in this case, it is possible to project a plurality of hologram reproduction images with one optical device 201.
  • FIG. 32 shows an example of the unit unit of the irradiation unit of the second example used in the optical device 201 of the fifth embodiment.
  • FIG. 33 is a diagram illustrating illumination by the unit unit of the irradiation unit of the second example used in the optical device 201 of the fifth embodiment.
  • the irradiation part 210 of 2nd Example is comprised from several unit unit 201 ', and unit unit 201' has the most basic minimum structure.
  • the unit unit 201 ′ includes a light emitting unit 202 that emits laser light and a diffusion unit 204 that receives the laser light emitted from the light emitting unit 202 and emits light to emit light.
  • a transmissive hologram 240 is used as the diffusion unit 204.
  • the configuration of the diffusing unit 204 of the second embodiment may be the same as that of the first embodiment.
  • the hologram may be a transmission hologram or a reflection hologram.
  • the hologram include an embossed hologram, a volume hologram, and an electronic hologram.
  • 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.
  • a Fourier-transform hologram that is a computer-generated hologram using a Fourier transform optical system may be used.
  • the unit unit 201 ′ uses a unit laser array 220 as the light emitting unit 202.
  • the unit laser array 220 includes three laser light sources, a first laser light source 221, a second laser light source 222, and a third laser light source 223.
  • the first laser light source 221, the second laser light source 222, and the third laser light source 223 emit light having different wavelengths, and the first laser light source 221 emits light of the first wavelength and second laser light source.
  • the second wavelength light is emitted from 222, and the third wavelength light is emitted from the third laser light source 223.
  • the first wavelength light emitted from the first laser light source 221 is blue light
  • the second wavelength light emitted from the second laser light source 222 is green light
  • the third wavelength light emitted from the three-laser light source 223 can be red light.
  • the unit laser array 220 will be described based on an example using three different types of laser light sources: a first laser light source 221, a second laser light source 222, and a third laser light source 223.
  • the number of types of laser light sources used may be arbitrary.
  • the laser light emitted from the first laser light source 221 enters the first storage area 241 as the first diffusion element area of the unit hologram 240, and the laser light emitted from the second laser light source 222 is emitted from the unit hologram 240.
  • the laser light incident on the second storage area 242 as the second diffusion element area and emitted from the third laser light source 223 is incident on the third storage area 243 as the third diffusion element area of the unit hologram 240. It has become.
  • Each storage area 241, 242, 243 is composed of a set of element diffusion elements.
  • the laser beam from the first laser light source 221 enters the first storage area 241 of the unit hologram 240 as reference light, a hologram reproduction image recorded in the first storage area 241 is obtained.
  • the first unit irradiation area emitted from the unit hologram 240 is illuminated.
  • 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 201 of the second embodiment is provided with a plurality of unit units 201 ′ composed of the combination of the unit laser array 220 and the unit hologram 240 as described above, and the light emitting unit 202 and the diffusing unit 204 as the entire optical device 201.
  • the light emitting unit 202 includes a plurality of unit laser arrays 220
  • the diffusion unit 204 has a diffusion element region corresponding to each laser light source of the plurality of unit laser arrays 220.
  • FIG. 34 shows illumination by the irradiation unit of the second example used in the optical device 201 of the fifth embodiment.
  • each unit laser array 220 illuminates each irradiation region, and as shown in FIG. 34, the entire optical device 201 is formed as a whole irradiation region.
  • the unit irradiation region formed by the unit laser array 220 and the unit hologram 240 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 220 in the light emitting unit 2 so as to perform different illuminations.
  • the unit laser array 220 in the light emitting unit 202 is described as being planar, that is, two-dimensionally arranged. However, the unit laser array 220 is arranged one-dimensionally. May be.
  • FIG. 35 is a side view of the irradiation unit of the third example used in the optical device 201 of the fifth embodiment in the first state.
  • FIG. 36 is a front view of the irradiation unit of the third example used in the optical device 201 of the fifth embodiment in the first state.
  • the scanning unit 203 in the irradiation unit 210 of the third embodiment can move the hologram 240 two-dimensionally with respect to the support rail 231 as an outer frame portion surrounding the outer periphery of the hologram 240 as the diffusion element 240 and the support rail 231.
  • a guide rail 232 as a guide part for guiding to the vehicle.
  • the guide rails 232 are supported by the support rails 231 facing both ends so as to be movable, and each side of the hologram 240 is supported by the respective guide rails 232 so as to be movable.
  • Each hologram area 241 to 249 constitutes a diffusion element area.
  • Each hologram area 241 to 249 is composed of a set of element diffusion elements.
  • the fifth hologram region 245 of the diffusing element 204 is irradiated from the light emitting unit 202, and the illumination light 211 is irradiated in a predetermined direction.
  • FIG. 37 is a front view of the irradiation unit of the third example used in the optical device 201 of the fifth embodiment in the second state.
  • a switching signal is input to the control unit 207 from the detection unit 205 shown in FIG.
  • the control unit 207 acquires the area of the hologram 240 corresponding to the input content from the detection unit 205 from the storage unit 206.
  • the control unit 207 drives the scanning unit 203 so that the region of the hologram 240 acquired from the storage unit 206 is irradiated from the light emitting unit 202.
  • a signal indicating the destination location is input from the detection unit 205 to the control unit 207.
  • the control unit 207 obtains a signal stored in the storage unit 206 that the area for displaying the arrow 213 is the sixth hologram area 246. Then, the control unit 207 drives the scanning unit 203 so that the sixth hologram region 246 of the hologram 240 is irradiated from the light emitting unit 202.
  • optical device 201 of the fifth 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 detection unit 205 that detects the moving body M, the irradiation unit 210 that emits light, the position of the moving body M detected by the detection unit 205, and the irradiation unit 210
  • the storage unit 206 that stores the correspondence between the irradiation areas to be irradiated and the correspondence stored by the storage unit 206 so that the mobile unit M is guided to a predetermined position when the detection unit 205 detects the mobile unit M.
  • the control unit 207 for irradiating the irradiation unit 210 with light is provided based on the above, so that it is possible to irradiate a predetermined position with a predetermined shape and guide the moving body to the predetermined position.
  • the irradiation unit 210 includes a light emitting unit 202 that emits coherent light, and a first diffusion element including a set of element diffusion elements in which predetermined predetermined information is recorded.
  • the coherent light emitted from the light emitting unit 202 has the diffusion element 240 divided at least into the second diffusion element region 242 composed of a set of element diffusion elements in which information different from the region 241 and the first diffusion element region 241 is recorded.
  • a storage unit 206 that stores the correspondence between the first diffusion element region and the first irradiation region, and the second diffusion element region and the second irradiation region, respectively.
  • the control unit 207 irradiates at least the first diffusing element region 241 or the second diffusing element region 242 of the diffusing unit 204 with the coherent light emitted from the light emitting unit 202, so that the target region is accurately irradiated with a predetermined shape. Can be irradiated.
  • the detection unit 205 that detects the moving moving body is provided, and the control unit 207 diffuses to the position of the moving body when the detecting unit 205 detects the moving body. Since the light irradiated from the unit 204 is irradiated, the irradiation region of the diffusing unit 204 is irradiated with the coherent light emitted from the light emitting unit 202 from the correspondence stored in the storage unit 206. Since it can be set in advance, when the moving body is sensed, the illumination light 211 can be accurately irradiated with the position where the moving body is moving as the irradiation region 212.
  • the scanning unit 203 that scans so that the light emitted from the light emitting unit 202 is applied to at least one of the first diffusion element region and the second diffusion element region. Since the control unit 207 drives the scanning unit 203 based on the correspondence stored in the storage unit 206, it is possible to quickly and accurately switch the projection content according to a change in state.
  • the irradiation unit 210 irradiates the arrow 213, so that the moving body M can be accurately guided.
  • optical apparatus 1 has been described based on some embodiments, the present invention is not limited to these embodiments, and various combinations or modifications are possible.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Holo Graphy (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
PCT/JP2015/081263 2014-11-07 2015-11-06 光学装置 WO2016072483A1 (ja)

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JP2017156656A (ja) * 2016-03-04 2017-09-07 コニカミノルタプラネタリウム株式会社 画像投映装置およびプラネタリウム
AT518332A1 (de) * 2016-06-28 2017-09-15 Zkw Group Gmbh Lichtzeiger und Symbole mit diffraktiven Elementen
KR101951463B1 (ko) 2016-12-29 2019-02-22 에스엘 주식회사 차량용 램프
KR20180077976A (ko) * 2016-12-29 2018-07-09 에스엘 주식회사 차량용 램프
WO2018162223A1 (de) * 2017-03-09 2018-09-13 Bayerische Motoren Werke Aktiengesellschaft Beleuchtungsvorrichtung für ein kraftfahrzeug
CN110062863A (zh) * 2017-03-09 2019-07-26 宝马股份公司 用于机动车的照明装置
CN110073140A (zh) * 2017-03-09 2019-07-30 宝马股份公司 用于机动车的照明装置
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US11585901B2 (en) 2017-11-15 2023-02-21 Veoneer Us, Llc Scanning lidar system and method with spatial filtering for reduction of ambient light
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CN113606551B (zh) * 2018-09-26 2024-05-03 株式会社小糸制作所 车辆用灯具
WO2020067093A1 (ja) * 2018-09-26 2020-04-02 株式会社小糸製作所 車両用灯具
US11579257B2 (en) 2019-07-15 2023-02-14 Veoneer Us, Llc Scanning LiDAR system and method with unitary optical element
US11474218B2 (en) 2019-07-15 2022-10-18 Veoneer Us, Llc Scanning LiDAR system and method with unitary optical element
US11313969B2 (en) 2019-10-28 2022-04-26 Veoneer Us, Inc. LiDAR homodyne transceiver using pulse-position modulation
JP6918243B1 (ja) * 2019-11-28 2021-08-11 三菱電機株式会社 光パターン生成装置
WO2021106123A1 (ja) * 2019-11-28 2021-06-03 三菱電機株式会社 光パターン生成装置
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WO2021126802A1 (en) * 2019-12-19 2021-06-24 Valeo Vision Device and method of directing a light via rotating prisms
US12044800B2 (en) 2021-01-14 2024-07-23 Magna Electronics, Llc Scanning LiDAR system and method with compensation for transmit laser pulse effects
JP2024506184A (ja) * 2021-02-12 2024-02-09 メルセデス・ベンツ グループ アクチェンゲゼルシャフト マイクロレンズアレイ投影装置、照明装置、および車両
JP7647903B2 (ja) 2021-02-12 2025-03-18 メルセデス・ベンツ グループ アクチェンゲゼルシャフト マイクロレンズアレイ投影装置、照明装置、および車両
US11326758B1 (en) * 2021-03-12 2022-05-10 Veoneer Us, Inc. Spotlight illumination system using optical element
US11732858B2 (en) 2021-06-18 2023-08-22 Veoneer Us, Llc Headlight illumination system using optical element
US12092278B2 (en) 2022-10-07 2024-09-17 Magna Electronics, Llc Generating a spotlight
US12228653B2 (en) 2022-10-07 2025-02-18 Magna Electronics, Llc Integrating a sensing system into headlight optics
US12202396B1 (en) 2023-12-19 2025-01-21 Magna Electronics, Llc Line-scan-gated imaging for LiDAR headlight

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