WO2022045294A1 - Dispositif de formation d'image aérien, dispositif d'entrée aérien, dispositif d'affichage pourvu du dispositif de formation d'image aérien, objet mobile et lentille d'imagerie d'hologramme - Google Patents

Dispositif de formation d'image aérien, dispositif d'entrée aérien, dispositif d'affichage pourvu du dispositif de formation d'image aérien, objet mobile et lentille d'imagerie d'hologramme Download PDF

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Publication number
WO2022045294A1
WO2022045294A1 PCT/JP2021/031514 JP2021031514W WO2022045294A1 WO 2022045294 A1 WO2022045294 A1 WO 2022045294A1 JP 2021031514 W JP2021031514 W JP 2021031514W WO 2022045294 A1 WO2022045294 A1 WO 2022045294A1
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WIPO (PCT)
Prior art keywords
hologram
aerial
imaging
image
light
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PCT/JP2021/031514
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English (en)
Japanese (ja)
Inventor
信彦 市川
豪 山内
Original Assignee
大日本印刷株式会社
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Application filed by 大日本印刷株式会社 filed Critical 大日本印刷株式会社
Publication of WO2022045294A1 publication Critical patent/WO2022045294A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
    • G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • 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

Definitions

  • the present invention is an aerial imaging device, an aerial input device having an aerial imaging device, a display device with an aerial imaging device or an aerial imaging device, an aerial imaging device, an aerial input device or an aerial imaging device. With respect to a moving body having a display device.
  • the present invention also relates to a hologram imaging lens.
  • the aerial imaging device described in International Publication No. 2009/131128 As a device for displaying an object to be displayed in the air by forming an image of image light from an image light emitting device that emits image light in the air without a screen or the like, for example, the aerial imaging device described in International Publication No. 2009/131128. It has been known.
  • the aerial imaging device described in International Publication No. 2009/131128 has an imaging element for forming an image light from an image light emitting device in the air.
  • the imaging element is formed by arranging reflective surfaces on two reflective members at regular intervals and stacking the reflective members so that the reflective surfaces are orthogonal to each other.
  • the imaging element described in International Publication No. 2009/131128 has a complicated configuration in which reflective members are accurately arranged. Such an imaging element is not easy to manufacture and is costly.
  • An object of the present invention is to form an image in the air with a simple configuration.
  • the aerial imaging apparatus of the present invention is A display device that emits image light and A hologram imaging lens that forms an image of image light emitted from the display device at an imaging position is provided.
  • the image light may be divergent light.
  • the hologram imaging lens may be a volume hologram.
  • the hologram imaging lens may be a reflective hologram.
  • the hologram imaging lens may form an image of light having a red wavelength, light having a green wavelength, and light having a blue wavelength, respectively.
  • the display apparatus has a red wavelength light, a green wavelength light, and a blue wavelength light so that the image formed by the hologram imaging lens has a desired color.
  • Image light including light may be emitted.
  • the aerial imaging device of the present invention may further include an optical member including a second reflective hologram between the display device and the hologram imaging lens.
  • the image light may be incident on the hologram imaging lens at an incident angle forming a Brewster angle.
  • the imaging position may be observed from a direction different from the direction in which the image light is incident on the hologram imaging lens.
  • the imaging position may be between the display device and the hologram imaging lens.
  • the distance between the imaging position and the hologram imaging lens may be 15 mm or more.
  • the aerial imaging apparatus of the present invention may further have an imaging marker indicating the imaging position.
  • the hologram imaging lens may be transparent.
  • the hologram imaging lens may include a plurality of element hologram forming portions provided with interference fringes and an element hologram non-forming portion between the element hologram forming portions.
  • the aerial input device of the present invention is With any of the above-mentioned aerial imaging devices, A position detection sensor having sensitivity at a position corresponding to the image formation position is provided.
  • the aerial input device of the present invention may further include a sensor mark indicating a range that can be detected by the position detection sensor.
  • the display device with an aerial imaging device of the present invention is A second display device having a display surface and It includes any of the above-mentioned aerial imaging devices or any of the above-mentioned aerial input devices provided with the hologram imaging lens on the display surface.
  • the mobile body of the present invention includes any of the above-mentioned aerial imaging devices, any of the above-mentioned aerial input devices, or the above-mentioned display device with an aerial imaging device.
  • the hologram imaging lens of the present invention forms an image of the incident image light at the imaging position.
  • an image can be formed in the air with a simple configuration.
  • FIG. 1 is a diagram showing a moving body including a display device with an aerial imaging device.
  • FIG. 2 is an exploded perspective view schematically showing the configuration of a display device with an aerial imaging device.
  • FIG. 3 is a top view of the aerial input device.
  • FIG. 4 is an enlarged view showing a part of the hologram imaging lens.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG. 3, and is a cross-sectional view of the aerial imaging device for explaining the operation of the aerial imaging device.
  • FIG. 6 is a diagram showing the relationship between the direction in which the image formation position is observed and the direction in which the image light is incident.
  • FIG. 7 is a diagram showing a manufacturing process of a hologram imaging lens.
  • FIG. 1 is a diagram showing a moving body including a display device with an aerial imaging device.
  • FIG. 2 is an exploded perspective view schematically showing the configuration of a display device with an aerial imaging device.
  • FIG. 3 is a top view
  • FIG. 8A is a diagram showing an example of an image forming process of an image by a hologram imaging lens.
  • FIG. 8B is a diagram showing another example of the image forming process of the image by the hologram imaging lens.
  • FIG. 9 is a cross-sectional view showing a modified example of the aerial imaging apparatus corresponding to FIG.
  • FIG. 1 is a diagram showing a part of the interior of an automobile as an example of a moving body.
  • the automobile 1 has an instrument panel and a center console.
  • the center console 5 of the automobile 1 is composed of a display device 10 with an aerial imaging device.
  • a display device 10 with an aerial imaging device is provided in place of the operation switch and the display device with a touch panel function provided in the center console of a conventional automobile.
  • the display device 10 with an aerial imaging device displays an image and forms an image in the air separately from the image.
  • the observer of the display device 10 with an aerial imaging device can observe the image displayed on the display surface and the image formed at a position away from the display surface.
  • the display device 10 with an aerial imaging device preferably has an aerial input device 20 described later.
  • the aerial input device 20 allows the observer to input information to the display device 10 with an aerial imaging device. For example, an observer of the display device 10 with an aerial imaging device moves a finger or the like to the position of an image formed in the air to display information on the display device 10 with an aerial imaging device without touching the display surface or the like. May be entered.
  • FIG. 2 shows an exploded perspective view of the display device 10 with an aerial imaging device.
  • the display device 10 with an aerial imaging device includes a second display device 11 and an aerial input device 20.
  • the second display device 11 has a display surface 12.
  • the second display device 11 can display an image on the display surface 12.
  • the image displayed on the display surface 12 can be observed by the observer of the display device 10 with an aerial imaging device.
  • the second display device 11 may be any display device such as a liquid crystal display, a plasma display, or an organic EL display.
  • the display surface 12 of such a second display device 11 may be, for example, a glass surface.
  • the second display device 11 displays an image by transmitting light through a printed transparent film or the like, or displays an image by light and dark by blocking a part of the light with a light-shielding object. You may.
  • the second display device 11 includes a light source that emits light and a predetermined pattern portion.
  • the predetermined pattern portion is a transparent film printed corresponding to the image to be displayed, a light-shielding object having a shape corresponding to the image to be displayed, or the like.
  • the surface of the transparent film and the non-formed portion of the light-shielding object form the display surface 12.
  • the light source may be, for example, a surface light source device that emits light in a planar shape.
  • the surface light source device can make the intensity of light transmitted through a predetermined pattern portion uniform.
  • FIG. 3 shows a top view of the aerial input device 20.
  • the aerial input device 20 forms an image in the air and detects the presence of an object at a detectable position.
  • Position information can be input by detecting the presence of an object.
  • the information of the position to be detected can correspond to the image formed.
  • a protruding shape in which four characters A, B, C, and D are drawn is formed in the air, and the presence of an object can be detected at a position corresponding to each protruding shape. May be.
  • the aerial input device 20 when the observer points to a protruding shape in which a character is drawn with a finger F, the aerial input device 20 detects the pointed position and obtains a protruding shape corresponding to the detected position. Identify. By specifying the protruding shape pointed to, the information of the character pointed to by the observer can be input.
  • the aerial input device 20 is arranged on the side of the display surface 12 of the second display device 11.
  • the aerial input device 20 can be retrofitted to the second display device 11.
  • the aerial input device 20 includes a position detection sensor 21, a sensor marker 25, and an aerial imaging device 30.
  • the position detection sensor 21 detects the position of the object in the predetermined range R.
  • the position detection sensor 21 may detect not only the position of the object but also the movement.
  • the position detection sensor 21 is set and arranged so as to have detection sensitivity at a position corresponding to the position where the image is formed.
  • the position detection sensor 21 includes a first sensor 21a and a second sensor 21b.
  • the first sensor 21a detects the position in the first direction d1.
  • the second sensor 21b detects the position of the second direction d2, which is non-parallel to the first direction d1.
  • the position of the object in the first direction d1 and the second direction d2 can be detected by the first sensor 21a and the second sensor 21b.
  • the position detection sensor 21 may be able to detect the position of the object only in the first direction d1. In addition to the first direction d1 and the second direction d2, the position in the third direction non-parallel to the first direction d1 and the second direction d2 may be detected.
  • the sensor mark 25 visually clarifies to the observer the range in which the position detection sensor 21 can detect the position.
  • the sensor marker 25 surrounds the range R so as to clarify the range R in which the position detection sensor 21 detects the position of the object.
  • the sensor mark 25 is a rectangular frame-shaped member, and the position detection sensor 21 is provided on the sensor mark 25.
  • the sensor mark 25 may have any shape.
  • the aerial imaging device 30 forms a desired image.
  • the imaged image is observed by the observer.
  • the aerial imaging device 30 includes a display device 31 and a hologram imaging lens 40.
  • the display device 31 emits image light.
  • the hologram imaging lens 40 forms an image of the image light emitted from the display device 31 at the imaging position 45.
  • the aerial imaging device 30 has an imaging marker 35 indicating an imaging position 45.
  • the display device 31 emits the light that is the basis of the image to be imaged by the aerial imaging device 30 to the hologram imaging lens 40 as image light.
  • the image light emitted by the display device 31 is preferably divergent light.
  • the display device 31 may be any display device such as a liquid crystal display, a plasma display, or an organic EL display.
  • the display device 31 may be a projector or the like that emits parallel light. When the image light emitted by the display device 31 is parallel light, the image light can be converted into divergent light by transmitting the image light while diffusing it on the screen 32 as shown in FIG. 8B described later.
  • the display device 31 is a projector or the like that emits parallel light and the image light is transmitted while being diffused by the screen 32
  • the image light emitted by the display device 31 preferably includes light having a red wavelength, light having a green wavelength, and light having a blue wavelength. In other words, it is preferable that the display device 31 emits full-color image light.
  • the intensity of the light of each wavelength included in the image light emitted by the display device 31 is adjusted so that the image formed by the hologram imaging lens 40 has a desired color.
  • the display device 31 transmits image light including light having a red wavelength, light having a green wavelength, and light having a blue wavelength so that the image formed by the hologram imaging lens 40 has a desired color. Emit. In other words, the display device 31 emits light of each wavelength corresponding to the characteristics of the hologram imaging lens 40.
  • the hologram imaging lens 40 when light having a red wavelength is less likely to be diffracted than light having a blue wavelength, in other words, an image in which the ratio of the light having a blue wavelength to the light having a red wavelength contained in the image light is formed.
  • the ratio of the light of the blue wavelength to the light of the red wavelength contained in the display device 31 is larger than the ratio of the light of the blue wavelength to the light of the red wavelength, the display device 31 displays the light having a red wavelength rather than the light of the blue wavelength with respect to the desired color to be exhibited by the image.
  • the increased amount of image light is emitted to the hologram imaging lens 40.
  • the hologram imaging lens 40 emits light having a red wavelength. It is designed to be less diffracted than light of blue wavelength.
  • the image light emitted by the display device 31 is incident on the hologram imaging lens 40 at an incident angle forming a Brewster angle.
  • the Brewster angle is an incident angle at which the reflectance of the polarizing component (p-polarizing component) parallel to the incident surface at the interface becomes zero.
  • the image light is incident on the hologram imaging lens 40 at an angle forming a Brewster's angle, only one of the polarizing components (s polarization component) is reflected on the surface of the hologram imaging lens 40.
  • the incident angle which is the Brewster's angle, is about 56 °.
  • the imaging mark 35 is provided around the imaging position 45 in which the hologram imaging lens 40 forms an image, and indicates the imaging position 45 in which the hologram imaging lens 40 forms an image.
  • the image formation mark 35 indicates the approximate position of the image formation position 45 to the observer, thereby making it easier for the observer to observe the image formed at the image formation position 45.
  • the imaging marker 35 is the same member as the sensor marker 25.
  • the image formation mark 35 is a rectangular frame-shaped member. However, not limited to the illustrated example, the image marking 35 may be a member different from the sensor marking 25.
  • the image marking 35 may have any shape.
  • the hologram imaging lens 40 functions as an imaging element and forms an image of image light emitted from the display device 31 at the imaging position 45.
  • the hologram imaging lens 40 can form an image in the air.
  • the hologram imaging lens 40 diffracts the light to direct the incident light to a desired position and form an image at the imaging position.
  • the hologram imaging lens 40 is preferably a volume hologram.
  • the hologram imaging lens 40 forms an image on the side where the image light from the display device 31 is incident.
  • the hologram imaging lens 40 forms an image while reflecting the image light.
  • the hologram imaging lens 40 is a reflective hologram.
  • the hologram imaging lens 40 forms an image of light having a red wavelength, light having a green wavelength, and light having a blue wavelength, respectively.
  • the hologram imaging lens 40 is provided on the display surface 12 of the second display device 11.
  • the hologram imaging lens 40 is preferably transparent so that the display surface 12 of the second display device 11 can be observed through the hologram imaging lens 40.
  • Transparent means having transparency to the extent that one side of the hologram imaging lens can be seen through the hologram imaging lens, for example, 30. It means that it has a visible light transmittance of% or more, more preferably 70% or more.
  • the visible light transmittance is the transmittance at each wavelength when measured using a spectrophotometer (“UV-3100PC” manufactured by Shimadzu Corporation, JIS K 0115 compliant product) within the measurement wavelength range of 380 nm to 780 nm. Can be specified as the average value of.
  • FIG. 4 shows a part of an example of the hologram imaging lens 40 in an enlarged manner.
  • the hologram imaging lens 40 includes a plurality of element hologram forming portions 41 provided with interference fringes forming a hologram.
  • the hologram imaging lens 40 preferably includes an element hologram non-forming portion 42 between the element hologram forming portions 41.
  • the element hologram non-forming portion 42 is not provided with interference fringes.
  • the element hologram forming portion 41 is formed in a square shape, and a plurality of element hologram forming portions 41 are arranged in a square lattice shape.
  • the light incident on the element hologram forming unit 41 is diffracted.
  • the light incident on the element hologram non-forming portion 42 is transmitted without being diffracted.
  • the hologram imaging lens 40 does not include the element hologram non-forming portion 42, and interference fringes may be provided on the entire surface.
  • the hologram imaging lens 40 forms an image on the side where the image light from the display device 31 is incident.
  • the imaging position 45 on which the hologram imaging lens 40 forms an image is between the display device 31 and the hologram imaging lens 40.
  • the distance D between the imaging position 45 and the hologram imaging lens 40 is preferably 15 mm or more, and more preferably 30 mm or more.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG.
  • the observer observes the image formed at the image formation position 45 from a direction different from the direction in which the image light is projected from the display device 31, and points the image with the finger F.
  • the image formation position 45 on which the image is formed is observed from a direction different from the direction in which the image light is incident on the hologram image formation lens 40.
  • FIG. 6 shows the relationship between the direction in which the observer observes the image and the direction in which the image light is incident.
  • the smaller angle ⁇ between the direction in which the image formation position 45 is observed and the direction in which the image light is incident on the hologram imaging lens 40 is preferably 90 ° or more, preferably 130 ° or more. Is more preferable, and 170 ° or more is further preferable.
  • FIG. 7 shows a state in which the hologram recording material is irradiated with object light and reference light when recording a hologram.
  • the hologram recording material 40a is irradiated with object light from a position that becomes an imaging position 45 of the manufactured hologram imaging lens 40.
  • the reference light which is parallel light
  • the condenser lens 50 functions to condense the incident parallel light to a position where the hologram imaging lens 40 is irradiated with the divergent image light, that is, a position where the display device 31 is arranged.
  • interference fringes are recorded on the hologram recording material 40a. In this way, the hologram imaging lens 40 is manufactured.
  • the material of the hologram recording material 40a may be, for example, a silver salt-sensitive material, gelatin dichromate, a crosslinkable polymer, a photopolymer, or the like.
  • the photopolymer is preferable as a material for the hologram recording material 40a because it is excellent in mass productivity.
  • the photopolymer comprises at least one photopolymerizable compound and a photopolymerization initiator.
  • the thickness of the layer containing the photopolymer is, for example, 5 ⁇ m or more and 100 ⁇ m or less, preferably 10 ⁇ m or more and 50 ⁇ m or less.
  • the photopolymer is formed on a substrate made of, for example, polycarbonate or polyethylene terephthalate.
  • the object light and reference light irradiated to the hologram recording material 40a are, for example, an argon ion laser having a wavelength of 457.9 nm, 476.5 nm, 488.0 nm or 514.5 nm, a krypton ion laser having a wavelength of 647.1 nm, and a wavelength 632. It may be a helium-neon laser having a wavelength of 8 nm or a YAG laser having a wavelength of 532 nm.
  • the hologram imaging lens 40 may be manufactured by a hologram printer. According to the hologram printer, the hologram imaging lens 40 can be manufactured by calculating the interference fringes at each position of the manufactured hologram imaging lens 40 and then recording the pattern of the interference fringes. In particular, when a large hologram imaging lens 40 is manufactured, the hologram imaging lens 40 can be manufactured without using the large condenser lens 50.
  • the hologram imaging lens 40 can be mass-produced by manufacturing one hologram imaging lens 40 by any of the above-mentioned methods or another method and optically duplicating the hologram imaging lens 40.
  • FIGS. 8A and 8B show an example and another example of a state in which an image is reproduced when light is emitted from the display device 31.
  • the image light diverging from the display device 31 is applied to the hologram imaging lens 40.
  • the screen 32 is irradiated with image light which is parallel light from the display device 31.
  • the image light diffused by the screen 32 and turned into divergent light is applied to the hologram imaging lens 40.
  • the image light applied to the hologram imaging lens 40 is diffracted by the hologram imaging lens 40.
  • the image light diffracted at each position of the hologram imaging lens 40 is condensed and imaged at the imaging position 45. In this way, an image is formed in the air by the image light from the display device 31.
  • the image light emitted from the display device 31 becomes the reproduced light for reproducing the hologram.
  • An imaging mark 35 is provided at the imaging position 45 where the image is formed by the aerial imaging device 30. The observer can easily observe the image formed by using the image marking mark 35 as a guide.
  • a position detection sensor 21 having detection sensitivity is arranged at a position corresponding to the image formation position 45.
  • the position detection sensor 21 detects the position of the finger F.
  • the aerial input device 20 can specify the position pointed by the finger F in the image formed in the air, and can input the information of the position.
  • the aerial imaging device 30 of the present embodiment includes a display device 31 that emits image light, and a hologram imaging lens 40 that forms an image of the image light emitted from the display device 31 at the imaging position 45. ..
  • a hologram imaging lens 40 is used as the imaging element.
  • the hologram imaging lens 40 has only a configuration in which interference fringes are recorded, and is simple. With the hologram imaging lens 40 having such a simple configuration, the aerial imaging apparatus 30 can form an image in the air.
  • the hologram imaging lens 40 can be easily manufactured by recording the interference fringes on the hologram recording material 40a or by recording the pattern of the interference fringes with a hologram printer. Alternatively, the manufactured hologram imaging lens 40 can be easily mass-produced by optically duplicating it.
  • the hologram imaging lens 40 having a simple structure can be easily manufactured and mass-produced.
  • the hologram imaging lens 40 and the aerial imaging device 30 can be sufficiently supplied to meet the increasing demand.
  • the image light emitted by the display device 31 is divergent light.
  • the image formed can be visually recognized from a wide range of angles. It is possible to make it easier for the observer to observe the image to be imaged.
  • the hologram imaging lens 40 is a volume hologram. According to the volume hologram, second-order or higher-order diffracted light is unlikely to occur. The image light incident on the hologram imaging lens 40 can be efficiently imaged at the imaging position 45. The image becomes clearer and the image can be easily observed by the observer.
  • the hologram imaging lens 40 is a reflective hologram.
  • the hologram imaging lens 40 forms an image on the side on which the image light to be the reproduced light is incident.
  • the display device 31 and the imaging position 45 are located on the same side of the hologram imaging lens 40.
  • an aerial imaging device 30 is provided on the existing second display device 11, all the components of the aerial imaging device 30 can be provided on the side of the display surface 12 of the second display device 11.
  • An aerial imaging device 30 and an aerial input device 20 can be easily provided on the existing second display device 11 to form a display device 10 with an aerial imaging device.
  • the hologram imaging lens 40 forms an image of light having a red wavelength, light having a green wavelength, and light having a blue wavelength, respectively.
  • the hologram imaging lens 40 can form a full-color image.
  • the display device 31 includes light having a red wavelength, light having a green wavelength, and light having a blue wavelength so that the image formed by the hologram imaging lens 40 has a desired color. Emits image light. In other words, the display device 31 emits light of each wavelength corresponding to the characteristics of the hologram imaging lens 40. Even if the diffraction efficiency of the hologram imaging lens 40 is different for each wavelength, the image formed by the hologram imaging lens 40 can be obtained by adjusting the amount of light of each wavelength contained in the image light of the display device 31. It can be the desired color, i.e. the color intended to be presented.
  • the diffraction efficiency of each wavelength of the hologram imaging lens 40 is designed so as to correspond to the ratio of the light of each wavelength emitted by the display device 31.
  • the image formed by the hologram imaging lens 40 can be made into a desired color, that is, a color intended to be exhibited.
  • the image light is incident on the hologram imaging lens 40 at an incident angle forming a Brewster angle. Only one of the polarization components of the incident light is reflected on the surface of the hologram imaging lens 40.
  • the image light reflected by the surface of the hologram imaging lens 40 can interfere with the observation of the image.
  • Light containing only one of the polarization components can be prevented from being easily observed by providing an additional polarizing plate or the like.
  • the image light reflected on the surface of the hologram imaging lens 40 can be prevented from being observed so that the image to be imaged can be easily observed.
  • the image formation position 45 is observed from a direction different from the direction in which the image light is incident on the hologram image formation lens 40.
  • the observer inputs information by the position detection sensor 21 of the aerial input device 20 by the finger F or the like, the image light from the display device 31 is less likely to be obstructed by the finger F. The image can be clearly displayed even when information is input by the position detection sensor 21.
  • the imaging position 45 is between the display device 31 and the hologram imaging lens 40.
  • the display device 31 and the imaging position 45 are located on the same side of the hologram imaging lens 40.
  • all the components of the aerial imaging device 30 can be provided on the side of the display surface 12 of the second display device 11.
  • the aerial imaging device 30 can be easily provided on the existing second display device 11.
  • the imaging position 45 is separated from the hologram imaging lens 40 by 15 mm or more. Since the imaging position 45 and the hologram imaging lens 40 are sufficiently separated from each other, for example, when the position detection sensor 21 has the detection sensitivity according to the imaging position 45, when the image is pointed with the finger F, , The finger F is difficult to touch the hologram imaging lens 40. It is possible to suppress contact infection of a virus or the like in the hologram imaging lens 40. It is possible to prevent fingerprints and other stains from adhering to the hologram imaging lens 40, which makes it difficult to form an image.
  • the aerial imaging device 30 further has an imaging marker 35 indicating an imaging position 45. Since such an imaging mark 35 serves as a guide for the imaging position 45, it is possible to make it easier for the observer to observe the image formed at the imaging position 45.
  • the hologram imaging lens 40 is transparent.
  • the display surface 12 of the second display device 11 can be observed via the hologram imaging lens 40.
  • the image displayed on the display surface 12 and the image formed by the aerial imaging device 30 can be observed at the same time.
  • the hologram imaging lens 40 includes a plurality of element hologram forming portions 41 provided with interference fringes, and an element hologram non-forming portion 42 between the element hologram forming portions 41. Since the element hologram non-forming portion 42 having no interference fringes is present in the hologram imaging lens 40, light can be transmitted through the portion without being diffracted. In the display device 10 with an aerial imaging device having the aerial imaging device 30, the image displayed on the display surface 12 of the second display device 11 can be clearly observed via the hologram imaging lens 40.
  • the aerial input device 20 has a sensor mark 25 indicating a range in which the position detection sensor 21 can detect the position. According to such a sensor mark 25, the range in which the position detection sensor 21 can detect the position becomes visually clear. This allows the observer to easily input the position information. Contact with the hologram imaging lens 40 and the like is suppressed.
  • the aerial imaging device 30 of the present embodiment includes a display device 31 that emits image light, and a hologram imaging lens 40 that forms an image of the image light emitted from the display device 31 at the imaging position 45.
  • a hologram imaging lens 40 that forms an image of the image light emitted from the display device 31 at the imaging position 45.
  • Such an aerial imaging device 30 can form an image in the air by a simple configuration including a hologram imaging lens 40 in which interference fringes are recorded.
  • the aerial imaging device 30 further includes an optical member 37 including a second reflective hologram between the display device 31 and the hologram imaging lens 40.
  • the optical member 37 is provided away from the hologram imaging lens 40.
  • the optical member 37 is provided at an angle with respect to the hologram imaging lens 40.
  • the image light emitted from the display device 31 first enters the optical member 37.
  • the image light is reflected while being diffracted by the second reflective hologram. After that, the image light is reflected by the hologram imaging lens 40 while being diffracted again, and an image is formed at the imaging position 45.
  • the wavelength dispersion of the image light due to the diffraction in the optical member 37 can be reduced by the wavelength dispersion due to the diffraction in the hologram imaging lens 40.
  • the wavelength dispersion in the image to be imaged can be reduced. The image can be clearly displayed with the desired color.
  • the positional relationship between the optical member 37 and the hologram imaging lens 40 is not limited to the illustrated example.
  • the optical member 37 may be provided so as to overlap the hologram imaging lens 40.
  • the hologram imaging lens 40 and the optical member 37 are substantially parallel to each other.
  • the center console 5 is composed of a display device 10 with an aerial imaging device.
  • Other members such as the instrument panel of the automobile 1 may be configured by the display device 10 with an aerial imaging device.
  • the automobile 1 may not have the second display device 11 and may have only the aerial input device 20.
  • the automobile 1 may have only the aerial imaging device 30 without the position detection sensor 21 among the aerial input devices 20.
  • the aerial imaging device 30 may be combined with a contact-type position detection sensor along a normal plane, a so-called touch panel sensor, or the like, instead of the position detection sensor 21 having sensitivity at the position corresponding to the imaging position 45.
  • the display device 10 with an aerial imaging device, the aerial input device 20, and the aerial imaging device 30 may be provided on a moving body other than the automobile 1, or may be provided on a device or member other than the moving body. good.
  • the display device 10 with an aerial imaging device, the aerial input device 20, and the aerial imaging device 30 include an automated teller machine (ATM), a ticket vending machine, an ordering machine, a vending machine, an image / photo printing machine, and a game center. It may be provided in a housing for amusement or the like installed in the above.
  • ATM automated teller machine

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Holo Graphy (AREA)

Abstract

L'invention concerne un dispositif (30) de formation d'image aérien comprenant un dispositif (31) d'affichage qui émet une lumière d'image et une lentille (40) d'imagerie d'hologramme qui amène la lumière d'image émise par le dispositif (31) d'affichage à former une image au niveau d'une position (45) de formation d'image.
PCT/JP2021/031514 2020-08-28 2021-08-27 Dispositif de formation d'image aérien, dispositif d'entrée aérien, dispositif d'affichage pourvu du dispositif de formation d'image aérien, objet mobile et lentille d'imagerie d'hologramme WO2022045294A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-144689 2020-08-28
JP2020144689A JP7216925B2 (ja) 2020-08-28 2020-08-28 空中結像装置、空中入力装置、空中結像装置付き表示装置、移動体及びホログラム結像レンズ

Publications (1)

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WO2022045294A1 true WO2022045294A1 (fr) 2022-03-03

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JP (1) JP7216925B2 (fr)
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07318848A (ja) * 1994-05-19 1995-12-08 Mitsubishi Precision Co Ltd 情報データの光学的重畳装置
JPH10239629A (ja) * 1997-02-27 1998-09-11 Inax Corp 表示装置
US20110249087A1 (en) * 2010-04-08 2011-10-13 City University Of Hong Kong Multiple view display of three-dimensional images
WO2011136214A1 (fr) * 2010-04-28 2011-11-03 シャープ株式会社 Système optique
WO2012032851A1 (fr) * 2010-09-06 2012-03-15 シャープ株式会社 Système d'affichage et procédé de détection
JP2016164701A (ja) * 2015-03-06 2016-09-08 国立大学法人東京工業大学 情報処理装置及び情報処理装置の制御方法
JP2016208273A (ja) * 2015-04-22 2016-12-08 株式会社Ｎｔｔドコモ 映像表示システム
JP2020126282A (ja) * 2017-06-13 2020-08-20 パナソニックＩｐマネジメント株式会社 入力システム、入力方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100425293B1 (ko) * 2001-02-01 2004-03-30 삼성전자주식회사 입체 영상 표시 장치
JP7172207B2 (ja) * 2018-07-10 2022-11-16 オムロン株式会社 入力装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07318848A (ja) * 1994-05-19 1995-12-08 Mitsubishi Precision Co Ltd 情報データの光学的重畳装置
JPH10239629A (ja) * 1997-02-27 1998-09-11 Inax Corp 表示装置
US20110249087A1 (en) * 2010-04-08 2011-10-13 City University Of Hong Kong Multiple view display of three-dimensional images
WO2011136214A1 (fr) * 2010-04-28 2011-11-03 シャープ株式会社 Système optique
WO2012032851A1 (fr) * 2010-09-06 2012-03-15 シャープ株式会社 Système d'affichage et procédé de détection
JP2016164701A (ja) * 2015-03-06 2016-09-08 国立大学法人東京工業大学 情報処理装置及び情報処理装置の制御方法
JP2016208273A (ja) * 2015-04-22 2016-12-08 株式会社Ｎｔｔドコモ 映像表示システム
JP2020126282A (ja) * 2017-06-13 2020-08-20 パナソニックＩｐマネジメント株式会社 入力システム、入力方法

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JP7216925B2 (ja) 2023-02-02

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