WO2017013860A1 - Display device and display system - Google Patents

Abstract

In order to enable intuitively understanding three-dimensional positional relations between objects, this display device is provided with: a screen which is configured by arranging sub-screens separated by a prescribed gap and configured from multiple transparent sheets in which phosphors that emit light when excited by light of a specific frequency are dispersed; multiple projection devices which are provided corresponding to each of the multiple sub-screens and which comprise a light source and a spatial modulation element that includes a display surface which displays on the screen a phase distribution for displaying desired display information; and control device which controls the projection devices so as to project the desired display information on the screen.

Description

Display device and display system

The present invention relates to a display device and a display system for displaying information three-dimensionally.

In the virtual secondary monitoring radar used for confirming the operational status of the aircraft, information on the aircraft flying in the three-dimensional space is displayed on the two-dimensional radar screen. Therefore, considerable training is required to understand the information displayed on the radar screen. Even if the radar screen is configured with a large display so that it can be viewed by a large number of people, information must be shared unless all people who reference the display have the skills to understand the information displayed on the radar screen. I can't.

Patent Document 1 discloses a three-dimensional display device that displays a three-dimensional stereoscopic image by independently changing the luminance of two-dimensional images displayed on a plurality of display surfaces. The device of Patent Document 1 includes a plurality of display devices arranged at different depth positions as viewed from the observer. At least one of the plurality of display devices has a transparent screen that selectively reflects or diffuses specific polarized light, such as a hologram transparent screen. An observer can recognize a three-dimensional stereoscopic image by viewing the display device from the transparent screen side.

Patent Document 2 discloses a rear projection display device using a laser light source. When the laser light includes three primary colors of red, green, and blue, the screen of the apparatus of Patent Document 2 is a normal screen that diffuses and transmits the laser light. On the other hand, when the laser light has a specific wavelength of about 405 nanometers, the screen of the device of Patent Document 2 has a fluorescent region having phosphor regions that generate red, green, and blue light using the laser light as excitation light. It becomes a screen.

Non-Patent Document 1 discloses a desktop display device that changes a surface shape three-dimensionally. The device of Non-Patent Document 1 changes a surface shape three-dimensionally by arranging a plurality of pins whose heights can be changed on a table and independently changing the heights of those pins. Furthermore, the apparatus of Non-Patent Document 1 can not only represent a three-dimensional surface shape, but also cover the upper end sides of a plurality of pins with an extendable sheet and project information on the sheet.

JP 2011-128633 A International Publication No. 2014/002511

According to the apparatus of Patent Document 1, information in a three-dimensional space can be displayed more three-dimensionally than a general three-dimensional display apparatus. However, the apparatus of Patent Document 1 has a problem that it is difficult for the observer to intuitively grasp the three-dimensional space from the displayed information because the observer's viewpoint is limited to one direction. Moreover, even if the screen of Patent Document 1 is replaced with the fluorescent screen of Patent Document 2, the above-described problems are not solved.

According to the apparatus of Non-Patent Document 1, information can be projected on a sheet on which a three-dimensional surface shape is expressed, so that it is easier to grasp a three-dimensional space more intuitively than a two-dimensional screen. However, although the device of Non-Patent Document 1 is suitable for expressing the surface shape of an object, there is a problem that it is difficult to intuitively grasp the three-dimensional positional relationship between objects.

An object of the present invention is to provide a display device that can intuitively grasp the three-dimensional positional relationship between objects in order to solve the above-described problems.

A display device according to the present invention includes a screen configured by disposing sub-screens configured by a plurality of transparent sheets in which phosphors emitting light of a specific wavelength are dispersed at predetermined intervals, a light source, a screen And a spatial modulation element including a display surface for displaying a phase distribution for displaying desired display information, and a plurality of projection devices provided corresponding to each of the plurality of sub-screens, and a desired screen And a control device that controls the projection device to project the display information.

The display system of the present invention acquires observation data in a specific range, extracts display target data related to the display target from the acquired observation data, and transmits the extracted display target data and light of a specific wavelength. A screen composed of a plurality of transparent sheets with dispersed phosphors arranged at predetermined intervals, and a display for displaying a phase distribution for displaying desired display information on the screen. A plurality of projection devices provided corresponding to each of the plurality of sub-screens, and a control for controlling the projection device to project desired display information on the screen; A display device that receives display target data from the management device and displays desired display information based on the received display target data.

According to the present invention, it is possible to provide a display device that can intuitively grasp the three-dimensional positional relationship between objects.

1 is a perspective view of a display device according to a first embodiment of the present invention. 1 is a side view of a display device according to a first embodiment of the present invention. It is a block diagram which shows the structure of the projection apparatus of the display apparatus which concerns on the 1st Embodiment of this invention. It is a conceptual diagram which shows the optical structure of the projection apparatus of the display apparatus which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the structure of the control apparatus of the display apparatus which concerns on the 1st Embodiment of this invention. It is a side view of the display apparatus which concerns on the 2nd Embodiment of this invention. It is a block diagram which shows the structure of the control apparatus of the display apparatus which concerns on the 2nd Embodiment of this invention. It is a side view of the modification of the display apparatus which concerns on the 2nd Embodiment of this invention. It is a perspective view of the display apparatus which concerns on the 3rd Embodiment of this invention. It is a side view of the display apparatus which concerns on the 3rd Embodiment of this invention. It is a conceptual diagram which shows the structure of the three-dimensional display part of the display apparatus which concerns on the 3rd Embodiment of this invention. It is a conceptual diagram which shows an example of the drive part for changing the surface shape of the three-dimensional display part of the display apparatus which concerns on the 3rd Embodiment of this invention. It is a block diagram which shows the structure of the control apparatus of the display apparatus which concerns on the 3rd Embodiment of this invention. It is a side view of the modification of the display apparatus which concerns on the 3rd Embodiment of this invention. It is a perspective view of the display apparatus which concerns on the 4th Embodiment of this invention. It is a side view of the display apparatus which concerns on the 4th Embodiment of this invention. It is a block diagram which shows the structure of the control apparatus of the display apparatus which concerns on the 4th Embodiment of this invention. It is a perspective view of the modification of the display apparatus which concerns on the 4th Embodiment of this invention. It is a side view of the display apparatus which concerns on the 5th Embodiment of this invention. It is a conceptual diagram which shows an example of the movable stage contained in the modification of the display apparatus which concerns on the 5th Embodiment of this invention. It is a perspective view of the display apparatus which concerns on the 6th Embodiment of this invention. It is a conceptual diagram which shows the structure of the interface apparatus formed in the display apparatus which concerns on the 6th Embodiment of this invention. It is a conceptual diagram which shows the structure of the imaging device of the display apparatus which concerns on the 6th Embodiment of this invention. It is a block diagram which shows the structure of the control apparatus of the display apparatus which concerns on the 6th Embodiment of this invention. It is a block diagram which shows the structure of the operation recognition part contained in the control apparatus of the display apparatus which concerns on the 6th Embodiment of this invention. It is a perspective view of the display apparatus which concerns on the 7th Embodiment of this invention. It is a side view of the display apparatus which concerns on the 7th Embodiment of this invention. It is a conceptual diagram which shows an example which projects a projection light on the whole subscreen using a general projection optical system. It is a conceptual diagram which shows an example which projects a projection light on the whole subscreen using the projection optical system which considered distortion. It is a perspective view of the display apparatus of the modification 1 which concerns on the 7th Embodiment of this invention. It is a perspective view of the display apparatus of the modification 2 which concerns on the 7th Embodiment of this invention. It is a perspective view of the display apparatus of the modification 3 which concerns on the 7th Embodiment of this invention. It is a block diagram which shows the structure of the display system which concerns on the 8th Embodiment of this invention. It is a block diagram which shows the structure of the management apparatus of the display system which concerns on the 8th Embodiment of this invention. It is a block diagram which shows an example of the hardware constitutions which implement | achieve the control apparatus of the display apparatus which concerns on each embodiment of this invention. It is a conceptual diagram which shows an example of the utilization scene of the display apparatus which concerns on each embodiment of this invention. It is a conceptual diagram which shows an example of the utilization scene of the display apparatus which concerns on each embodiment of this invention. It is a conceptual diagram which shows an example of the utilization scene of the display apparatus which concerns on each embodiment of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the preferred embodiments described below are technically preferable for carrying out the present invention, but the scope of the invention is not limited to the following. In all the drawings used for the description of the following embodiments, the same reference numerals are given to the same parts unless there is a particular reason.

(First embodiment)
First, a display system 1 according to a first embodiment of the present invention will be described with reference to the drawings.

1 and 2 are conceptual diagrams of a display system 1 according to an embodiment of the present invention. 1 shows a perspective view and FIG. 2 shows a side view.

The display system 1 according to the present embodiment includes a plurality of projection devices 10-1 to 3-3, a control device 20, and a screen 30. The screen 30 includes a plurality of sub-screens 31-1 to 31-3. In the following description, when it is not necessary to distinguish between the plurality of projection apparatuses 10-1 to 3 and the plurality of sub screens 31-1 to 31-3, they are simply described as the projection apparatus 10 and the sub screen 31. Sometimes.

In the present embodiment, an example including three projection devices 10-1 to 3 and three sub-screens 31-1 to 3 will be described. However, the number of projection devices 10 and sub-screens 31 may be smaller than three. , More than three. In the present embodiment, a configuration example in which one projection device 10 is provided on each sub-screen 31 is shown. However, two or more projection devices may be provided on any one of the sub-screens 31. Further, a sheet or an object different from the subscreens 31-1 to 3-3 may be arranged above the uppermost subscreen 31-1 or below the lowermost subscreen 31-3.

Projection device 10 projects desired display information on screen 30. The projection device 10 may project light in a visible region, or may project light in an invisible region such as an ultraviolet region or an infrared region.

In this embodiment, it is preferable to use a phase modulation type projector as the projection device 10. The phase modulation projector is focus-free and does not require focus adjustment. Therefore, even if light is projected at a shallow angle as shown in FIGS. 1 and 2, the image is not blurred depending on the display position. In addition, a phase modulation projector can be reduced in size because a clear image can be obtained with low power by concentrating light only on a display portion.

The projection device 10 is arranged in association with any of the plurality of sub-screens 31-1 to 31-1. In the example of FIG. 1, the projection device 10-1 is associated with the sub-screen 31-1, the projection device 10-2 is associated with the sub-screen 31-2, and the projection device 10-3 is associated with the sub-screen 31-3. The projection devices 10-1 to 10-3 are fixed to the sub-screens 31-1 to 31-3 by the support members 41-1 to 41-3. If the positional relationship of the projection devices 10-1 to 10-3 with respect to the sub-screens 31-1 to 3-3 is fixed by some method, the projection devices 10-1 to 10-3 are connected to the sub-screen 31 by the supports 41-1 to 3-1. It may not be fixed to -1 to 3.

The plurality of projection apparatuses 10 may be configured to project light having the same wavelength, or may be configured to project light having different wavelengths.

In the display device 1 according to the present embodiment, even if the light has the same wavelength, different colors are displayed depending on the types of phosphors dispersed in the sub-screen 31, and therefore the color of the light projected from the projection device 10 Is not directly colored on the sub-screen 31. In addition, in order to prevent the reflected light of the light projected on the sub screen 31 and the color of the image displayed on the sub screen 31 from being mixed, the projector 10 is configured to project light in an invisible region. It is preferable.

Further, the projection device 10-1 projects red light, the projection device 10-2 projects green light, the projection device 10-3 projects blue light, and so on, so that each projection device 10 projects light of different wavelengths. It may be configured. Further, the projectors 10-1 and 10-2 may be configured to project red light, and the projector 10-3 may project blue light. The plurality of projection devices 10 may be configured to project not only the three primary colors of red, green, and blue, but also light of orange, yellow, yellow-green, purple, pink, brown, dark green, white, and the like. The wavelength of the projection light is not limited. Further, the plurality of projection devices 10 may be configured to project not only the wavelength of light but also light in which parameters such as hue, saturation, and brightness are set.

Projection apparatus 10 has a spatial modulation element including a display surface for displaying a pattern for projecting desired display information on sub-screen 31. The projection device 10 reflects light emitted from the light source on the display surface of the spatial modulation element, and displays desired display information on the sub-screen 31. The detailed configuration of the projection device 10 will be described later.

The control device 20 controls the projection device 10 so that desired display information is displayed at a desired position on any of the sub-screens 31 constituting the screen 30. The detailed configuration of the control device 20 will be described later.

The screen 30 includes a plurality of sub-screens 31-1 to 31-3. The plurality of sub-screens 31-1 to 31-3 are arranged at a predetermined interval in the first direction. 1 and 2 show an example in which a plurality of sub-screens 31-1 to 31-3 are arranged at a predetermined interval in a direction perpendicular to the main surface of each sub-screen 31. The direction in which the plurality of sub-screens 31-1 to 31-3 are arranged can be set to an arbitrary direction, not a direction perpendicular to the main surface of the screen 30. Further, the main surfaces of the plurality of sub-screens 31-1 to 31-3 do not have to be parallel to each other. Further, the interval between the plurality of sub-screens 31-1 to 31-3 may not be a fixed distance.

The screen 30 individually displays information regarding different elevations on any of the plurality of sub-screens 31-1 to 31-3. The altitude is a height based on the average sea level, and the upper side is indicated by plus and the lower side is indicated by minus. 1 and 2, each sub-screen 31 is illustrated as floating in the air, but each sub-screen 31 is actually supported by a support body (not shown).

Each sub-screen 31 is a transparent phosphor screen composed of a transparent sheet in which phosphors are dispersed, and display information below it can be seen through each layer. Note that the lowermost sub-screen 31-3 does not have to be transparent when there is no information to be transmitted underneath. The sub screen 31 may be a transparent sheet in which a phosphor is dispersed and a surface of transparent glass or the like is covered.

The screen 30 of the display device 1 according to the present embodiment includes at least two sub screens 31. The number of sub-screens 31 constituting the screen 30 is not limited to three as shown in FIG. 1 and may be increased or decreased as necessary.

For example, when the display device 1 according to the present embodiment is used to indicate the submarine status of the submarine, the plurality of sub-screens 31-1 to 3-3 may be arranged corresponding to a predetermined depth. When the display device 1 according to the present embodiment is used to indicate the cruise status of the aircraft, the plurality of sub-screens 31-1 to 31-3 may be set corresponding to a predetermined altitude.

The intervals between the plurality of sub-screens 31-1 to 31-3 may be equal intervals or arbitrary intervals. Further, the intervals between the sub-screens 31-1 to 31-3 may be arranged at a ratio corresponding to the actual dimension, or may be arranged at a ratio different from the actual dimension.

The sub-screen 31 is a transparent sheet in which phosphors that absorb the irradiated laser light and emit a specific fluorescent color are dispersed. When light of a predetermined wavelength is incident on the sub screen 31, the sub screen 31 emits a fluorescent color derived from the phosphor dispersed on each sub screen 31.

For example, the sub screen 31 may be realized by a transparent sheet in which phosphors are dispersed. In particular, the sub-screen 31 is preferably a transparent plastic sheet in which nano-sized phosphors are dispersed. For example, the transparent sheet may be made of a transparent resin mainly made of polyvinyl aselar typified by polyvinyl butyral (PVB). The transparent sheet can be made of any material such as plastic or glass as long as it does not make it difficult to recognize the fluorescent color emitted by the phosphor excited by light of a specific wavelength. Do not add.

For example, in the sub-screen 31, a complex oxide doped with rare earths may be dispersed as a phosphor. For example, a phosphor in which a rare earth element such as europium, dysprosium, erbium, cerium, or thulium is doped into a composite oxide such as yttrium, aluminum, garnet, yttrium, and vanadate can be used. In addition, for example, compound semiconductor nanoparticles using the properties of quantum dots that can obtain different fluorescence by controlling the particle size may be dispersed in the subscreen 31 as a phosphor. The phosphor used for the sub-screen 31 is not limited to the above-described compounds and compositions as long as it is excited by light of a specific wavelength and emits a specific fluorescent color.

The phosphor used for the sub-screen 31 is preferably configured to use a material that is transparent in the visible region and emits fluorescence when excited by light having a wavelength outside the visible region. With such a configuration, since the phosphor is transparent in the visible region, it is possible to recognize the color of desired display information projected on another subscreen 31 through any one of the subscreens 31.

(Projection device)
Here, a detailed configuration of the projection apparatus 10 will be described with reference to FIGS. 3 and 4. As illustrated in FIG. 3, the projection apparatus 10 includes a light source 11, a light source driving unit 12, a spatial modulation element 15, a modulation element control unit 16, and a projection unit 18. As shown in FIG. 4, the projection apparatus 10 includes a collimator 111, a Fourier transform lens 181, an aperture 182, and a projection lens 183.

The light source 11 emits light 140 having a specific wavelength. The light emitted from the light source 11 becomes coherent light 140 by the collimator 111 and is applied to the display surface of the spatial modulation element 15.

The light source 11 may be configured to emit light 140 in the visible region, or may be configured to emit light 140 in an invisible region such as an ultraviolet region or an infrared region. The light emitted from the light source 11 is selected according to the excitation wavelength of the phosphor in the sub screen 31. For example, when the excitation wavelength of the phosphor in the sub-screen 31 is 405 nanometers, the light source 11 corresponding to the sub-screen 31 may be selected to emit light having a wavelength in the vicinity of 405 nanometers.

As shown in FIG. 4, in the present embodiment, the incident angle of the light 140 is set non-perpendicular to the display surface of the spatial modulation element 15. That is, the emission axis of the light 140 emitted from the light source 11 is inclined with respect to the display surface of the spatial modulation element 15. If the emission axis of the light 140 is set obliquely with respect to the display surface of the spatial modulation element 15, the light 140 can be incident on the display surface of the spatial modulation element 15 without using a beam splitter, so that the efficiency can be improved. .

The light source driving unit 12 is a power source that drives the light source 11 under the control of the control device 20 and emits light 140 from the light source 11.

The spatial modulation element 15 displays a pattern for generating desired display information displayed on the screen 30 on its display surface in accordance with the control of the modulation element control unit 16. In the present embodiment, the display information 101 corresponds to desired display information.

For example, the spatial modulation element 15 can be realized by a phase modulation type spatial modulation element that receives the coherent light 140 having the same phase and modulates the phase of the incident light 140 into the modulated light 170. The spatial modulation element 15 emits the modulated light 170 toward the projection unit 18. The spatial modulation element 15 may be an element of a system different from the phase modulation type as long as desired display information can be projected onto the screen 30.

A phase distribution of desired display information projected on the screen 30 is displayed on the display surface of the phase modulation type spatial modulation element 15. The modulated light 170 reflected by the display area of the spatial modulation element 15 becomes an image in which a kind of diffraction grating forms an aggregate, and the desired display information is obtained by collecting the light diffracted by these diffraction gratings. It is formed.

The spatial modulation element 15 is realized by a spatial modulation element using, for example, a ferroelectric liquid crystal, a homogeneous liquid crystal, a vertical alignment liquid crystal, or the like. Specifically, the spatial modulation element 15 can be realized by LCOS (Liquid Crystal Crystal on Silicon). The spatial modulation element 15 may be realized by, for example, MEMS (Micro Electro Mechanical System).

The modulation element control unit 16 displays a pattern for projecting desired display information on the screen 30 on the display surface of the spatial modulation element 15 based on the projection condition set by the control device 20. For example, the phase modulation type modulation element control unit 16 changes the parameter that determines the difference between the phase of the light 140 irradiated on the display surface of the spatial modulation element 15 and the phase of the modulated light 170 reflected on the display surface. Thus, the spatial modulation element 15 is controlled. Details of the projection conditions will be described later.

Parameters that determine the difference between the phase of the light 140 applied to the display surface of the phase modulation type spatial modulation element 15 and the phase of the modulated light 170 reflected from the display surface are, for example, optical parameters such as refractive index and optical path length. It is a parameter regarding the characteristic. For example, the modulation element control unit 16 changes the refractive index of the display surface by controlling the voltage applied to the display surface of the spatial modulation element 15. As a result, the light 140 irradiated on the display surface is appropriately diffracted based on the refractive index of the display surface. That is, the phase distribution of the light 140 applied to the phase modulation type spatial modulation element 15 is modulated according to the optical characteristics of the display surface. Note that the control of the spatial modulation element 15 by the modulation element control unit 16 is not limited to the above.

Projection unit 18 projects light 140 emitted from light source 11 onto screen 30 as signal light 190. As shown in FIG. 4, the projection unit 18 includes a Fourier transform lens 181, an aperture 182, and a projection lens 183. The modulated light 170 modulated by the spatial modulation element 15 is projected onto the screen 30 as signal light 190 by the projection unit 18. An image formed by the signal light 190 projected on the screen 30 is the display information 101.

The Fourier transform lens 181 is an optical lens for forming an image formed when the modulated light 170 reflected by the display surface of the spatial modulation element 15 is projected at infinity at a focal position near the spatial modulation element 15. It is. The Fourier transform lens 181 may be composed of a single lens or a combination of a plurality of lenses.

The aperture 182 has a function of erasing higher-order light included in the light focused by the Fourier transform lens 181 and specifying an image region. The opening portion of the aperture 182 is opened smaller than the image area of the display information at the position of the aperture 182, and is installed so as to block the peripheral area of the display information at the position of the aperture 182. For example, the aperture 182 is opened in a rectangular shape or a circular shape. The aperture 182 is preferably installed at the focal position of the Fourier transform lens 181, but may be deviated from the focal position as long as the function of erasing higher-order light can be exhibited.

The projection lens 183 is an optical lens that magnifies and projects the light focused by the Fourier transform lens 181. The projection lens 183 projects the signal light 190 so that the display information 101 corresponding to the phase distribution input to the spatial modulation element 15 is displayed on the screen 30. If the display information 101 can be projected onto the screen 30 without the projection lens 183, the projection lens 183 may be omitted.

When projecting the projection light obliquely on the screen 30 as in the present embodiment, the projection lens 183 that projects the projection light by correcting the distortion generated by the positional relationship between the screen 30 and the projection lens 183 is provided. It is preferable to apply.

The signal light 190 projected from the projection unit 18 is not projected uniformly on the entire surface of each sub-screen 31 but is intensively projected on image portions such as characters, symbols, and frames constituting the display information 101. In this case, since the irradiation amount of the light 140 can be substantially reduced, the overall light output can be suppressed. Therefore, in the present embodiment, the light source 11 can be configured with a small and low power light source 11 and a low output light source driving unit 12 that drives the light source 11.

(Control device)
Next, the control device 20 according to the present embodiment will be described with reference to FIG. As illustrated in FIG. 5, the control device 20 according to the present embodiment includes a data receiving unit 21, a projection condition setting unit 22, a display pattern storage unit 23, and a projection condition output unit 24.

The data receiving unit 21 receives information (hereinafter, display target data) related to an object (hereinafter, display target) to be displayed on the screen 30 from the host system of the display device 1. The host system edits the capture information captured by a radar or the like installed in the moving path of the display target or in the vicinity thereof, and transmits the display target data of the display target to the display device 1. Note that the host system may include the display device 1 itself.

The display target data received by the data receiving unit 21 includes identification information indicating what the display target is, position information of the display target, and the like. Further, the display target data may include the traveling direction and speed of the display target, the departure point, the relay point, the destination, the route, and other information.

Identification information is information that can specify a display target, such as a name and a call sign. The position information represents the position of the display target in three-dimensional coordinates. The traveling direction and speed of the display target are the traveling direction and speed of the display target during cruising. The display target route is information indicating a time when the display target is displayed on the screen 30 and a position where the display target is cruising after a predetermined time from the current time.

The data receiving unit 21 outputs the received display target data to the projection condition setting unit 22.

The projection condition setting unit 22 acquires display target data from the data receiving unit 21, and sets a projection condition based on the acquired display target data. The projection condition is a condition for causing the projection device 10 to display desired display information on the screen 30.

The projection condition setting unit 22 extracts identification information and position information from the acquired display target data, and sets a condition (hereinafter referred to as a hierarchical condition) as to which sub-screen 31 the display target is to be displayed. The hierarchy indicates the cruise altitude if the display target is an airplane, and the submersion depth if the display target is a submarine. That is, the hierarchy indicates the altitude at which the display target is located. Further, the projection condition setting unit 22 sets a condition (hereinafter referred to as a position condition) as to which position on the set sub-screen 31 the information related to the display target is projected. That is, the projection condition setting unit 22 sets the hierarchy condition and the position condition for each display target.

In the display device 1 according to the present embodiment, the number of sub-screens 31 is finite. Therefore, the projection condition setting unit 22 may display the display information 101 related to the display target on the sub-screen 31 in the hierarchy where the display target is set to an altitude close to the altitude during the cruise. In addition, the position of the display target may be an actual position on the elevation surface where the display target is located, or may be a predicted position when the display target reaches the elevation of the hierarchy.

Further, the projection condition setting unit 22 acquires a display pattern associated with the identification information included in the input display target data from the display pattern storage unit 23. Further, the projection condition setting unit 22 acquires a display pattern corresponding to each piece of information included in the input display target data from the display pattern storage unit 23.

The projection condition setting unit 22 synthesizes the patterns related to the parameters of each information or sets the patterns of each information to be displayed in different display areas on the display surface of the spatial modulation element 15. The pattern displayed on 15 display surfaces is set.

The projection condition setting unit 22 transmits the set projection condition to the projection condition output unit 24.

The display pattern storage unit 23 stores a display pattern to be displayed on the display surface of the spatial modulation element 15 in order for the projection device 10 to display desired display information on the screen 30. When the spatial modulation element 15 is a phase modulation type element, its display pattern is a phase distribution associated with desired display information. For example, the display pattern storage unit 23 may acquire and store the display pattern created by the host system in advance.

For example, the display pattern storage unit 23 may store a predetermined symbol or figure associated with the identification information to be displayed. Further, for example, the display pattern storage unit 23 may store display patterns related to parameters of each information that can be included in the display target data. Normally, since the number of information displayed on the screen 30 is limited, the number of display patterns stored in the display pattern storage unit 23 is finite.

The projection condition output unit 24 transmits the projection condition set by the projection condition setting unit 22 to the projection device 10.

As described above, in the display device according to the present embodiment, various kinds of information related to the display target are three-dimensionally displayed. Therefore, according to the display device according to the present embodiment, the level of the space is divided into a plurality of layers and displayed, and the positional relationship between display targets in each layer and the positional relationship between display targets between layers are intuitive. It can be displayed so that it can be easily recognized. Further, the display device according to the present embodiment can grasp the status of the display target from anywhere from 360 degrees, and is therefore suitable for information sharing by a large number of people.

(Second Embodiment)
Next, a display device 2 according to a second embodiment of the present invention will be described with reference to the drawings.

FIG. 6 is a conceptual diagram of the display device 2 according to the present embodiment. FIG. 6 shows a side view. The display device 2 according to the present embodiment is different from the display system 1 according to the first embodiment in that the display device 2 includes a variable support body 42 that can change the height of the sub screen 31 and the interval between sheets.

The variable support body 42 is a support body that holds each sub-screen 31 and can arbitrarily change the height of the sub-screen 31 and the interval between sheets. The variable support body 42 is controlled by the control device 20-2 to expand and contract in the first direction. In addition, in FIG. 6, although the example which comprises the variable support body 42 by a single support body is shown, you may comprise by a some support body.

The variable support 42 has at least one expansion / contraction mechanism in which an electric device such as a motor (not shown) is incorporated. The variable support 42 changes the height of the sub-screen 31 by driving the electric device based on the control of the control device 20-2.

Further, when the variable support 42 changes the height of a certain sub-screen 31 (first sheet), the height of the other sub-screen 31 (second sheet) that does not need to be changed does not change. In this way, the movable devices are operated in conjunction with each other. That is, when changing the height of only the first sheet, the variable support body 42 can operate so as not to change the height of the second sheet by changing the interval between the first sheet and the second sheet. .

For example, in FIG. 6, when changing the height of the sub-screen 31-2, if the distance between the sub-screen 31-1 and the sub-screen 31-2 is not changed, the height of the sub-screen 31-2 is changed. As a result, the height of the sub-screen 31-1 also changes. In such a case, the variable support 42 may operate so as to reduce the height of the sub-screen 31-1 by the amount that the height of the sub-screen 31-2 is increased.

FIG. 7 is a block diagram showing a configuration of the control device 20-2 according to the present embodiment. The control device 20-2 according to the present embodiment has a configuration in which a height setting unit 221 and a variable support control unit 222 are added to the control device 20 of the first embodiment. Note that the functions of the control device 20-2 other than the height setting unit 221 and the variable support body control unit 222 are the same as those of the control device 20, and thus the description thereof is omitted.

The height setting unit 221 acquires position information to be displayed from the data receiving unit 21, and changes the height of any of the sub-screens 31 based on the height information included in the position information. The height setting unit 221 sets the height of the sub screen 31 so as to correspond to the height at which the display target is located. When the actual height at which the display target is located is within a predetermined range, the height setting unit 221 sets the height of the sub-screen 31 that displays the display information 101 of the display target to a predetermined setting value. Good. When the height of the display target included in the position information is different from the current height of the sub-screen 31, the height setting unit 221 sets the height of the sub-screen 31 on which the display information 101 of the display target is displayed. What is necessary is just to change based on positional information.

The height setting unit 221 outputs the newly set height of the sub-screen 31 to the variable support control unit 222 when changing the height of the sub-screen 31. The height setting unit 221 may output information regarding the sub-screen 31 whose height has been changed to the projection condition setting unit 22.

The variable support control unit 222 controls the height of the variable support 42 based on the setting of the height setting unit 221. For example, when the variable support 42 is driven by a motor, the variable support control unit 222 drives a motor for changing the height of the sub screen 31 and controls the height of the sub screen 31.

As described above, in the display device according to the present embodiment, the screen height corresponding to each layer can be arbitrarily changed. Therefore, according to the present embodiment, three-dimensional information can be shown more intuitively and easily by changing the setting value of the screen height according to the change in the height of the display target.

(Modification)
FIG. 8 shows a display device 2-1 as a modification of the display device 2 according to the second embodiment. FIG. 8 shows a side view.

In the display device 2-1 of this modification, each projection device 10 is attached to each sub screen 31 by a variable support body 43 (43-1 to 3) capable of changing the relative height with respect to each sub screen 31. Fixed. The height of the variable support 43 is set by the height setting unit 221 of the control device 20 and controlled by the variable support control unit 222.

According to this modification, for a fine depiction that tends to be difficult to recognize when projected onto the peripheral edge of the sheet, the height of the projection device relative to the sheet can be increased and projected so as to be easily recognized. In addition, according to the present modification, the projection support device is prevented from colliding with the upper sheet by controlling the variable support when the sheet interval becomes narrow and reducing the height of the projection device with respect to the sheet. Can be.

(Third embodiment)
Next, a display device 3 according to a third embodiment of the present invention will be described with reference to the drawings.

9 and 10 are conceptual diagrams of the display device 3 according to the present embodiment. The display device 3 according to the present embodiment is different from the display device 1 according to the first embodiment in that a stereoscopic display unit 50 is provided below the screen 30.

9 and 10 show a display device that displays the submarine status of the submarine as an example of the display device 3 according to the present embodiment. FIG. 9 shows a perspective view and FIG. 10 shows a side view. The display device 3 according to the present embodiment can also be applied to an air traffic control system or the like.

9 and 10 show a three-dimensional positional relationship between submarines by a plurality of layers associated with a specific depth. For example, the sea level information is displayed on the uppermost sub-screen 31-1, and the depth information becomes deeper toward the lower sub-screen 31. A device (three-dimensional display unit 50) that can mechanically change the surface shape is arranged at the bottom to show the topography of the seabed. 9 and 10, the display information 101-1 to 10-3 indicate the positions of the submarines to be displayed.

The stereoscopic display unit 50 changes its surface shape in accordance with the control of the control device 20-3. The stereoscopic display unit 50 is realized by the technique disclosed in Non-Patent Document 1, for example.
(Non-Patent Document 1) Leithinger and H.M. Ishii, “Relief: A Scalable Actuated Shape Display”, [online], MIT Media Lab, [Search June 19, 2015], Internet <URL: http: // tmg-trackr. media. mit. edu / publishedmedia / Papers / 432-Relief% 20A% 20Scalable% 20Actuated / Published / PDF
FIG. 11 is a conceptual diagram of the stereoscopic display unit 50 according to the present embodiment. Although FIG. 11 illustrates the stereoscopic display unit 50 as a circular table, the stereoscopic display unit 50 may be an arbitrary table that can be placed with its main surface facing the first direction.

The upper part of FIG. 11 shows a state in which a plurality of pins 51 are arranged on the main surface of the circular table so that the end portions thereof face the first direction. The upper part of FIG. 11 shows the initial state of the stereoscopic display unit 50. The middle part of FIG. 11 illustrates a state in which the ends of the plurality of pins 51 protrude at an arbitrary height from the first surface of the circular table. The lower part of FIG. 11 illustrates a state in which the upper part of the plurality of pins 11 is covered with a cover 52 that expands and contracts in the state of the middle part of FIG. If the cover 52 is not necessary, the cover 52 may be omitted.

The plurality of pins 51 arranged on the stereoscopic display unit 50 are arranged so that one end protrudes from the first surface of the circular table. Each of the plurality of pins 51 is controlled to enter and exit individually according to the control of the control device 20-3. For example, the plurality of pins 51 may be configured to operate individually by a movable mechanism inside the stereoscopic display unit 50. In addition, when the upper part of the several pin 51 is coat | covered with the elastic cover 52, the cover 52 is installed so that it may deform | transform with the protrusion of the several pin 51. FIG.

FIG. 12 is a conceptual diagram showing an example of the movable mechanism 510 mounted on the stereoscopic display unit 50. The left side of FIG. 12 shows a state where the pin 51 does not protrude. The right side of FIG. 12 shows a state where the pin 51 protrudes. In the example of FIG. 12, the pin 51 is installed in a hole formed in the base of the stereoscopic display unit 50. A movable mechanism 510 is installed below the pin 51.

The movable mechanism 510 includes an extendable part 511 and a drive part 512. For example, the drive unit 512 can be a mechanism in which the expansion / contraction part 511 is expanded and contracted by an electric mechanism such as a motor. Further, for example, the drive unit 512 may be a mechanism for changing the air pressure inside the expansion / contraction part 511 to expand / contract the expansion / contraction part 511. When receiving the control signal from the control device 20-3, the driving unit 512 expands / contracts the expansion / contraction unit 511 according to the control signal, and causes the pin 51 to protrude or retract. What is necessary is just to set the protrusion amount of the pin 51 with the electric current value etc. of a control signal.

For example, a material having a restoring force such as a spring may be embedded in the expansion / contraction part 511. If a spring is embedded in the expansion / contraction part 511, when the drive part 512 is stopped, the state of the pin 51 and the movable mechanism 510 returns to the initial state (left side in FIG. 12) by the restoring force of the spring.

Note that the movable mechanism 510 in FIG. 12 is an example of a mechanism for moving the pin 51. The mechanism for moving the pins 51 is not limited to the mechanism shown in FIG. 12 as long as the protruding amounts of the plurality of pins 51 can be individually controlled.

FIG. 13 is a block diagram showing a configuration of the control device 20-3 according to the present embodiment. The control device 20-3 according to the present embodiment has a configuration in which a stereoscopic display setting unit 231 and a stereoscopic display control unit 232 are added to the control device 20 of the first embodiment. Note that the functions of the control device 20-3 other than the stereoscopic display setting unit 231 and the stereoscopic display control unit 232 are the same as those of the control device 20, and thus description thereof is omitted.

The stereoscopic display setting unit 231 acquires information on the state of the lowest layer in the three-dimensional space where the display target is located from the data receiving unit 21. The state of the lowermost layer means, for example, a state of unevenness on the sea bottom in submarine diving, and a state of unevenness on the ground surface in cruise of aircraft. Further, the data receiving unit 21 may be configured to receive information related to the state of the lowest layer from a higher system or the like.

When the 3D display setting unit 231 acquires information on the state of the lowermost layer, the 3D display setting unit 231 individually sets the heights of the plurality of pins 51 arranged on the 3D display unit 50 based on the information.

The stereoscopic display control unit 232 individually controls the heights of the plurality of pins 51 constituting the stereoscopic display unit 50 based on the setting of the stereoscopic display setting unit 231.

As described above, in the display device according to the present embodiment, not only various information related to the display target is three-dimensionally displayed but also a three-dimensional display unit that mechanically changes the display state. According to this embodiment, since information on the sea floor and the ground surface can be displayed in a three-dimensional manner, it becomes easier to grasp three-dimensional information more intuitively than in the above-described embodiment.

(Modification)
FIG. 14 shows a display device 3-1 as a modification of the display device 3 according to the third embodiment. FIG. 14 shows a side view.

In the display device 3-1, the projection device 10-4 that projects the display information is installed on the cover 52 of the stereoscopic display unit 50 that mechanically changes its shape. The projection device 10-4 has the same configuration as the projection devices 10-1 to 10-3.

In the present modification, a portion where it is difficult to project the display information may occur due to the unevenness of the cover 52, and therefore a plurality of projection devices 10-4 may be configured. Further, in this modification, the cover 52 does not have to be formed of a transparent sheet in which phosphors are dispersed, and therefore the color of light projected by the projection device 10-4 is arbitrarily set regardless of the properties of the cover 52. it can. Note that the cover 52 may be formed of a transparent sheet in which phosphors are dispersed.

(Fourth embodiment)
Next, a display device 4 according to a fourth embodiment of the present invention will be described with reference to the drawings.

15 and 16 are conceptual diagrams of the display device 4 according to the present embodiment. The display device 4 according to the present embodiment is different from the display device 1 according to the first embodiment in that an opening 32 is formed in a part of the sub-screen 31 and a stage 60 that moves the opening 32 up and down is provided. Different. In the example of FIGS. 15 and 16, an object 61 that images a submarine is arranged on the stage 60.

The stage 60 moves up and down the opening 32 of the sub-screen 31 according to the control of the control device 20-4. The stage 60 is supported by the variable support body 62 so as to be movable up and down. The height of the stage 60 is controlled by changing the height of the variable support body 62 so as to be positioned at a height corresponding to the depth of the submarine on which the user is boarded, for example.

For example, an object 61 may be arranged on the upper surface of the stage 60, which is an image of an aircraft such as a submarine on which the user is aboard. A display target existing around the display target corresponding to the object 61 is displayed as display information 101 on each sub-screen 31. FIG. 15 shows numerically how far each display target is away from the axis along the first direction centered on the object 61. In FIG. 15, the larger the numerical value displayed on the sub-screen 31, the farther away from the object 61.

Note that the stage 60 may rotate so as to change the nose direction of the object 61 not only in the vertical direction but also in an arbitrary direction. Further, the stage 60 may be changed so that the nose direction of the object 61 is tilted upward or downward by tilting its main surface to an arbitrary angle.

FIG. 17 is a block diagram showing a configuration of the control device 20-4 according to the present embodiment. The control device 20-4 according to the present embodiment has a configuration in which a stage state setting unit 241 and a stage state control unit 242 are added to the control device 20 of the first embodiment. Regarding the control device 20-4, the functions of the components other than the stage state setting unit 241 and the stage state control unit 242 are the same as those of the control device 20, and thus description thereof is omitted.

The stage state setting unit 241 acquires the position information of the display target corresponding to the object 61 from the data receiving unit 21, and based on the height of the display target corresponding to the object 61 included in the position information, the variable support body 62. Set the height of. The stage state setting unit 241 may set the nose of the object 61 in an arbitrary direction by rotating or tilting the stage 60.

The stage state control unit 242 controls the height of the variable support 62 based on the setting of the stage state setting unit 241, and changes the height of the stage 60. The stage state control unit 242 may change the nose of the object 61 by controlling the stage 60 to rotate or tilt based on the setting of the stage state setting unit 241.

As described above, in the present embodiment, an object reflecting the image of a submarine on which a user is aboard is placed on a movable stage, and the stage is moved up and down according to the depth at which the submarine dives. According to the present embodiment, it is possible to more intuitively understand the positional relationship between the aircraft on which the user is boarded and the surrounding display objects.

(Modification)
FIG. 18 shows a display device 4-1 as a modification of the display device 4 according to the fourth embodiment. FIG. 18 shows a perspective view. The display device 4-1 of this modification is an example in which the display device 3 according to the third embodiment and the display device 4 according to this embodiment are combined.

According to this modification, it is possible to more intuitively understand the positional relationship between the aircraft on which the user is boarding and the surrounding display objects, including the state of the lowest layer such as the sea floor.

(Fifth embodiment)
Next, a display device 5 according to a fifth embodiment of the present invention will be described with reference to the drawings.

FIG. 19 is a conceptual diagram of the display device 5 according to the present embodiment. The display device 5 according to the present embodiment is different from the display device 1 according to the first embodiment in that an opening 32 is formed in a part of the sub screen 31 and a stage 60 that moves the opening 32 up and down is provided. Is different. The display device 5 according to the present embodiment is different from the display device 4 according to the fourth embodiment in that the display device 5 includes a projection device 10-5 that projects display information on the upper surface of the stage 60.

The stage 60 according to the present embodiment has the same configuration as that of the fourth embodiment. However, it is preferable that the stage 60 of the present embodiment includes a sheet similar to the sub-screens 31-1 to 31-3 in order to display the display information projected by the projection device 10-5. If the stage 60 does not need to be transparent, the material of the stage 60 is not limited.

FIG. 20 is an example showing a usage scene of the display device 5 according to the present embodiment. For example, an object 61 is arranged on the stage 60 as shown in FIG. Then, the projection device 10-5 projects information on the object onto the stage 60 beside the object 61. For example, various information such as the depth and angle of the aircraft corresponding to the object 61 and the state of equipment may be displayed beside the object 61.

According to the present embodiment, the user can more intuitively grasp the aircraft including information on the aircraft such as a submarine on which the user is boarded.

(Sixth embodiment)
Next, a display device 6 according to a sixth embodiment of the present invention will be described with reference to the drawings. FIG. 21 is a conceptual diagram of the display device 6 according to the present embodiment. The display device 6 according to the present embodiment is different from the display devices 1 to 5 according to the first to fifth embodiments in that the display device 6 includes an interface device 100 including an imaging device that images each screen 30 and the stereoscopic display unit 50. . FIG. 21 illustrates an example in which the interface device 100 projects the user interface 102 onto the sub screen 31 and the stereoscopic display unit 50.

FIG. 22 is a conceptual diagram showing a functional configuration of the display device 6 according to the present embodiment. In the display device 6, the control device 20-6 controls the projection device 10 and the imaging device 70.

The imaging device 70 images the screen 30 that displays the user interface 102 and the stereoscopic display unit 50. The imaging device 70 can be realized by, for example, a general camera function. The imaging device 70 may have a function capable of imaging light having a wavelength other than visible light, such as infrared light or ultraviolet light.

FIG. 23 is a block diagram illustrating a configuration of the imaging device 70. As illustrated in FIG. 23, the imaging device 70 includes an imaging device 71, an image processor 73, an internal memory 75, and a data output unit 77.

The imaging element 71 is an element for capturing an image of the screen 30 and the stereoscopic display unit 50 and acquiring image data. The imaging element 71 is a photoelectric conversion element in which semiconductor components are integrated into an integrated circuit. The imaging device 71 can be realized by a solid-state imaging device such as a CCD (Charge-Coupled Device) or a CMOS (Complementary Metal-Oxide-Semiconductor). Normally, the imaging element 71 is configured by an element that captures light in the visible region, but may be configured by an element that can capture and detect electromagnetic waves such as infrared rays, ultraviolet rays, X-rays, gamma rays, radio waves, and microwaves.

The image processor 73 performs integration on the image data picked up by the image pickup device 71 to perform image processing such as dark current correction, interpolation calculation, color space conversion, gamma correction, aberration correction, noise reduction, and image compression. Circuit. Note that when the image data is output without being processed, the image processor 73 may be omitted.

The internal memory 75 is a storage element that temporarily stores image data that cannot be processed by the image processor 73 and processed image data. The image data picked up by the image pickup device 71 may be temporarily stored in the internal memory 75. The internal memory 75 may be configured by a general memory.

The data output unit 77 outputs the image data processed by the image processor 73 to the control device 20-6.

FIG. 24 is a block diagram showing a configuration of the control device 20-6 according to the present embodiment. The control device 20-6 according to the present embodiment has a configuration in which an imaging control unit 261 and an operation recognition unit 262 are added to the control device 20 of the first embodiment. Note that the functions of the control device 20-6 other than the imaging control unit 261 and the operation recognition unit 262 are the same as those of the control device 20, and a description thereof will be omitted.

The imaging control unit 261 controls the imaging device 70 to perform imaging of the desired sub-screen 31 and the stereoscopic display unit 50, and acquires image data captured by the imaging device 70. The imaging control unit 261 outputs the acquired image data to the operation recognition unit 262.

The operation recognition unit 262 acquires the image data from the imaging control unit 261 and analyzes the image data to recognize the operation content of the user.

For example, an operation key for inputting an operation related to display information is set on the screen 30 or the stereoscopic display unit 50 by the projection condition setting unit 22. The operation recognition unit 262 determines the user's operation position on the screen 30 or the stereoscopic display unit 50. The operation recognition unit 262 can recognize the user's operation content by associating the user's operation position with the operation keys set on the screen 30 or the stereoscopic display unit 50.

Here, the display device 6 according to the present embodiment will be specifically described with reference to the example of FIG.

In the example of FIG. 21, the display device 6 displays display information (user interfaces 102-1 to 102-3) “UP” and “DOWN” on the sub-screens 31-1 to 31-3. In the user interfaces 102-1 to 102-3, if “UP” is operated, the sub-screens 31-1 to 3-3 are independently raised, and if “DOWN” is operated, the sub-screens 31-1 to 3-3 are independently lowered. It shall be.

In addition, the display device 6 displays display information (user interface 102-4) indicating “left arrow” and “right arrow” on the stereoscopic display unit 50. In the user interface 102-4, the display information of the screen 30 and the stereoscopic display unit 50 as a whole is rotated to the left when the “left arrow” is operated, and is rotated to the right when the “right arrow” is operated. .

For example, in FIG. 21, when “UP” of the user interface 102-2 displayed on the sub-screen 31-2 is operated, the sub-screen 31-2 is raised by a predetermined height. Further, for example, in FIG. 21, when the “rightward arrow” of the stereoscopic display unit 50 is operated, the display information of the screen 30 and the entire stereoscopic display unit 50 is rotated rightward.

As described above, in the display device according to the present embodiment, the display information of the display device can be changed to a desired state by a user operation. Therefore, according to the display device according to the present embodiment, it is possible to display the display information that the user wants to know so that it is easier to grasp intuitively. Moreover, according to this embodiment, since it can comprise so that a user's operation may be input, the function of an input device can be added to a display apparatus.

(Seventh embodiment)
Next, a display device 7 according to a seventh embodiment of the present invention will be described with reference to the drawings. FIGS. 26 and 27 are conceptual diagrams of the display device 7 according to the present embodiment. FIG. 26 shows a perspective view and FIG. 27 shows a side view. The present embodiment will be described using an example in which the display device 3 according to the third embodiment is modified.

The display device 7 according to the present embodiment is that the 0th-order light 191 passes from one surface side of the sub screen 31 to the other surface side through the opening 32 formed in a part of the sub screen 31. 3 is different. In addition, the display device 7 according to the present embodiment includes a light absorber 45 that absorbs the 0th-order light 191 that has passed through the opening 32 of the sub-screen 31. In addition, when displaying display information on the stereoscopic display unit 50, the light absorber 46 is disposed on the surface or inside of the stereoscopic display unit 50.

In general phase modulation projectors, 0th order light is basically generated. It is preferable to exclude the 0th order light because it becomes a bright spot. One option is to remove the zero-order light on the projector side and not project the zero-order light on the screen, but this method is disadvantageous in terms of resolution because the display information display area is reduced.

In this embodiment, the zero-order light is removed by the following two methods. The first method is a method of making a hole that allows the 0th-order light 191 to pass through the sub-screen 31. The second method is a method of installing a mirror that reflects the 0th-order light 191 on the sub-screen 31. In any method, the zero-order light 191 is prevented from being displayed on the screen 30 by installing the light absorber 45 that absorbs the removed zero-order light 191. In the following, the first method will be mainly described. The second method will be described as a modification of the present embodiment.

As shown in FIG. 26, in the present embodiment, an opening 32 is opened at the central portion of the sub-screen 31. The control device 20-7 controls the projection device 10 so that the zero-order light 191 is projected to the position of the opening 32 formed in the central portion of the sub-screen 31. In FIG. 26 and subsequent figures, the optical path of the zero-order light 191 is indicated by a one-dot chain line.

The light absorber 45 is installed on the optical path of the 0th-order light 191 that has passed through the central portion of the sub-screen 31. The light absorber 45 may be made of a material that easily absorbs light, such as a black body. A material having a high light absorption rate such as carbon may be selected for the black body, and the material is not limited. The light absorber 45 is preferably as thin as possible so as not to disturb the visibility. For example, the light absorber 45 may be attached to the outside of a support (not shown) that supports the sub screen 31. In addition, it is preferable to set the space | interval between the sub screens 31 so that the 0th order light 191 may not hit the adjacent sub screens 31. FIG. The light absorber 46 may be disposed inside or on the lowermost three-dimensional display unit 50.

When setting as shown in FIG. 26, it is desirable to improve the projection optical system based on the position of the opening 32 for removing the zero-order light 191. This is because the position of the zero-order light 191 is shifted from the center of the sub-screen 31 when a general projection optical system that uniformly projects the projection light on the entire sub-screen 31 is used.

FIG. 28 shows an example in which projection light is uniformly projected on the entire sub-screen 31 using a general projection optical system. In this case, the position of the zero-order light 191 is shifted from the center of the sub-screen 31 and comes closer to the projection device 10. In the example of FIG. 28, if the 0th-order light 191 is projected onto the center of the screen 31, the projection light cannot be projected onto the entire sub-screen 31. Further, even if the same display information is projected, the image is displayed large in a portion (region A) far from the projection device 10 and small in a close portion (region B).

Therefore, in the present embodiment, it is preferable that the projection apparatus 10 is configured with an optical system capable of projecting display information with an enlargement factor that takes distortion into consideration. For example, the projection lens 183 shown in FIG. 4 may be an asymmetric lens.

FIG. 29 is an example in which the projection light is uniformly projected on the entire sub-screen 31 using an optical system capable of projecting display information at an enlargement rate considering distortion. In other words, the projection apparatus 10 includes a projection lens 183 that projects projection light at an enlargement ratio in which distortion at each projection position on the sub screen 31 is corrected. In the example of FIG. 29, an optical system that projects projection light at an enlargement factor that takes into account distortion at a portion farther (region A) and a portion closer (region B) to the projection apparatus 10 is used. As a result, even if the 0th-order light 191 is positioned at the center of the sub-screen 31, the projection light can be uniformly projected on the entire sub-screen 31. Note that the projection lens 183 that projects the projection light at the magnification with the distortion corrected may be applied to the first to sixth embodiments.

As described above, according to the present embodiment, zero-order light can be accurately removed even in a projection device using a phase modulation type spatial modulation element. Therefore, according to the present embodiment, it is possible to solve the problem that the visibility deteriorates due to unnecessary zero-order light being displayed on the screen or the zero-order light being scattered around the display device.

(Modification)
Here, a modification of the display device 7 according to the present embodiment will be described.

FIG. 30 is a conceptual diagram of the display device 7-1 of the first modification. The display device 7-1 has a configuration in which a light absorber 45 is added to the display device 4 according to the fourth embodiment. In the first modification, the surface of the stage 60, the object 61, and the variable support body 62 is covered with a light absorber.

As shown in FIG. 30, in an example in which the stage 60 on which the object 61 is arranged is moved up and down, the 0th-order light 191 may hit the moved position, so the surfaces of the object 61 and the variable support body 62 Is preferably coated with a light absorber. The variable support 62 can be prevented from being shifted from the optical path of the zero-order light 191. In that case, the surface of the variable support 62 may not be covered with the light absorber.

FIG. 31 is a conceptual diagram of the display device 7-2 of the second modification. In the second modification, a mirror 47 that reflects the 0th-order light 191 is arranged at the projection position of the 0th-order light 191 on the sub-screen 31 instead of making a hole through which the 0th-order light 191 passes. In the second modification, the light absorber 45 is installed on the optical path of the 0th-order light 191 reflected by the mirror 47. In the second modification, when the zero-order light 191 is completely reflected by the mirror 47, the mirror 47 does not appear to shine. Therefore, the configuration as shown in FIG. 31 is established.

In the configuration of the modified example 2, the method of moving the stage 60 up and down at the center of the substage 31 is not applicable. However, if the position where the mirror 47 is arranged and the position of the hole for moving the stage 60 up and down are shifted, the method of moving the stage 60 up and down can be applied even in the configuration of the second modification.

FIG. 32 is a conceptual diagram of the display device 7-3 of the third modification. The display device 7-3 displays different colors on the screen 30 by a light source that emits light of a single wavelength. It should be noted that the method of this modification can also be applied when multicoloring is not performed.

In the third modification, projection light having a single wavelength is projected on each sub-screen 31 from two different directions. In the display device 7-3 of Modification 3, each sub-screen 31 is configured by superimposing two sheets. The configuration of Modification 3 is not limited to the seventh embodiment, and can be applied to the first to sixth embodiments.

In the third modification, the projection direction of the projection apparatus 10 is set so that the optical path of the zero-order light 191 is shifted from the sub screen 31. The projection device 10 is arranged so that the zero-order light 191 is directly absorbed by the light absorber 45.

The uppermost sub-screen 31-1 is composed of sheets 310-a and 310-b. The sub-screen 31-2 in the center layer is composed of sheets 310-c and 310-d. The lowermost sub-screen 31-3 is composed of sheets 310-e and 310-f.

When projecting light is projected from each projection device 10 onto each sub-screen 31, each sheet 310 constituting each sub-screen 31 develops a color corresponding to the wavelength of the projected light.

The projection device 10-1 projects the projection light having the first wavelength onto the sheet 310-a. Here, when light of the first wavelength is projected onto the sheet 310-a, red is colored.

The projection device 10-2 projects the projection light of the second wavelength onto the sheet 310-b and the sheet 310-c. Here, when light of the second wavelength is projected onto the sheet 310-b and the sheet 310-c, green is colored.

The projection device 10-3 projects the projection light having the third wavelength onto the sheet 310-d and the sheet 310-e. Here, when light of the third wavelength is projected onto the sheet 310-d and the sheet 310-e, blue is developed.

The projection device 10-4 projects the projection light of the fourth wavelength onto the surface of the sheet 310-f and the stereoscopic display unit 50. Here, it is assumed that purple is colored when light of the fourth wavelength is projected onto the surfaces of the sheet 310-f and the stereoscopic display unit 50.

With the above configuration, for example, on the sub-screen 31-1 on which the sheet 310-a and the sheet 310-b are overlapped, red and green can be colored simultaneously. Similarly, green and blue colors can be developed simultaneously on the screen 31-2, and blue and purple colors can be developed simultaneously on the screen 31-3.

In a general phase modulation type projection device, when projecting light of a plurality of colors, it is necessary to project light having different wavelengths for each color. In this case, it is necessary to install a plurality of light sources for a single screen, or to change the wavelength of light emitted from the single light source in a time division manner.

On the other hand, in Modification 3, a sub-screen is formed by bonding sheets having different colors, and projection light having different wavelengths is projected from both sides of the sub-screen. That is, in the third modification, projection light is projected from a single projection device onto a plurality of sub-screens. Therefore, according to Modification 3, there is no need to install a plurality of light sources on a single screen or change the wavelength of light emitted from a single light source in a time-sharing manner. The structure can be simplified. Further, according to this modification, the zero-order light can be directly absorbed by the absorber and removed without providing a hole or a mirror in the sub-screen.

In the case of a general projection apparatus, the central portion of the projection light is lost, and the efficiency is deteriorated. However, in the case of the phase modulation type projection apparatus as in the present embodiment, the light is concentrated and projected only on the portion where the display information is displayed, so that the efficiency is not lowered. As for the uppermost sub-screen, the method of Modification 3 may be used, or the method of Modifications 1 and 2 may be used.

(Eighth embodiment)
Next, a display system 8 according to an eighth embodiment of the present invention will be described with reference to the drawings.

FIG. 33 is a conceptual diagram of the display system 8 according to the present embodiment. The display system 8 according to the present embodiment has a configuration in which the display device 1 according to the first embodiment and the management device 80 are combined. The display system 8 may be configured by combining any of the display devices 1 to 7 according to the first to seventh embodiments and the management device 80, but the display device 1 is representative in the following description. take up. Further, since the display devices 1 to 7 constituting the display system 8 have the same configuration as the above-described configuration, the description thereof is omitted.

The management device 80 acquires observation data within a specific range in the three-dimensional space where the display target is located, extracts information about the display target (hereinafter referred to as display target data) from the acquired observation data, and extracts the display target A device that transmits data to a display device.

FIG. 34 is a block diagram showing a configuration of the management device 80 according to the present embodiment. The management device 80 includes an observation data receiving unit 81, a target determining unit 82, a target state extracting unit 83, a display target data generating unit 84, and a display target data transmitting unit 85.

The observation data receiving unit 81 receives observation data transmitted by a monitoring system (not shown) such as a radar that observes a specific range in the three-dimensional space where the display object is located. For example, the observation data receiving unit 81 includes an antenna (not shown), and receives observation data by wireless communication via the antenna. Note that the observation data receiving unit 81 may receive observation data by wired communication through a cable or the like.

For example, the monitoring system emits a radio wave of a specific wavelength in a three-dimensional space including an object such as a display object and measures the reflected wave of the radio wave, thereby obtaining information on the distance and direction to the object. Obtained as observation data. In addition, for example, the monitoring system may capture an image within a specific range with a camera, and acquire information on the size, shape, color, and the like of the object as observation data based on the captured image data and moving image data. There is no particular limitation on the method by which the monitoring system acquires observation data. The monitoring system transmits the acquired observation data to the management device 80.

The observation data receiving unit 81 outputs the observation data acquired from the monitoring system to the target determining unit 82.

The target determination unit 82 receives the observation data from the observation data reception unit 81, and verifies whether the information regarding the display target is included in the observation data. For example, the target determination unit 82 verifies the presence or absence of a display target based on information such as the shape, size, position, speed, and color of the target object included in the observation data. When the observation target identification information is included in the observation data, the target determination unit 82 may verify the presence of the display target using the identification information.

When the object determination unit 82 determines that the information related to the display target is included in the observation data, the object determination unit 82 outputs the observation data to the target state extraction unit 83.

The target state extraction unit 83 receives the observation data including the information about the display target from the target determination unit 82, and extracts the information about the display target from the received observation data. For example, the target state extraction unit 83 extracts position information, a traveling direction, and a speed of a display target. In addition, the target state extraction unit 83 extracts display target identification information and information such as a departure point, a relay point, a destination, and a route, if possible.

The target state extraction unit 83 outputs information about the extracted display target to the display target data generation unit 84.

The display target data generation unit 84 acquires information related to the display target extracted by the target state extraction unit 83, and creates display target data that summarizes the acquired information. The display target data generation unit 84 generates display target data including identification information and position information (elevation, longitude, and latitude) of the display target. Further, the display target data generation unit 84 may include information such as the traveling direction and speed of the display target, the departure place, the relay point, the destination, and the route in the display target data. For example, the display target data generation unit 84 may generate a collection of display target data related to at least one display target in a record format. Note that the display target data generation unit 84 may generate a plurality of display target data collected in a table format.

The display target data generation unit 84 outputs the generated display target data to the display target data transmission unit 85.

The display target data transmission unit 85 acquires the display target data generated by the display target data generation unit 84 and transmits the acquired display target data to the display device 1.

When the display device 1 receives the display target data from the management device 80, the display device 1 displays the display information 101 based on the display target data on the screen 30. The configuration and operation of the display device 1 are as described in the first to sixth embodiments.

As described above, in the display system according to the present embodiment, the position information of the display target moving in the three-dimensional space is acquired in real time, and the display target data of the display target is generated using the acquired position information. To do. In the display system according to the present embodiment, display information to be displayed can be displayed in real time using the generated display target data. Therefore, according to the display system according to the present embodiment, the position of the display target can be intuitively displayed in real time.

(Hardware configuration)
Next, the hardware configuration of the irradiation system according to each embodiment will be described using the computer 90 of FIG. 35 as an example. Note that the computer 90 in FIG. 35 is a configuration example for enabling the display device control apparatus according to each embodiment, and does not limit the scope of the present invention. In the case where the small projection apparatus 10 is configured, it is preferable to use a microcomputer having the function of the computer 90 in FIG.

35, the computer 90 includes a processor 91, a main storage device 92, an auxiliary storage device 93, an input / output interface 95, and a communication interface 96. The processor 91, the main storage device 92, the auxiliary storage device 93, the input / output interface 95, and the communication interface 96 are connected to each other via a bus 99 so as to exchange data. The processor 91, the main storage device 92, the auxiliary storage device 93, and the input / output interface 95 are connected to a network such as the Internet or an intranet via a communication interface 96. The computer 90 is connected to a host system server or computer via a network, and can acquire a phase distribution of display information to be projected from the host system.

The processor 91 expands the program stored in the auxiliary storage device 93 or the like in the main storage device 92, and executes the expanded program. In each embodiment, the software program installed in the computer 90 may be used. The processor 91 executes arithmetic processing and control processing of the control device according to each embodiment.

The main storage device 92 has an area where the program is expanded. The main storage device 92 may be a volatile memory such as a DRAM (Dynamic Random Access Memory). Further, a nonvolatile memory such as MRAM (Magnetoresistive Random Access Memory) may be configured and added as the main storage device 92.

The auxiliary storage device 93 is a means for storing data such as the phase distribution of display information. The auxiliary storage device 93 is configured by a local disk such as a hard disk or a flash memory. Note that the phase distribution of display information may be stored in the main storage device 92, and the auxiliary storage device 93 may be omitted.

The input / output interface 95 is a device that connects the computer 90 and peripheral devices based on the connection standard between the computer 90 and peripheral devices. The communication interface 96 is an interface for connecting to a network such as the Internet or an intranet based on standards and specifications. In FIG. 35, the interface is abbreviated as I / F (Interface). The input / output interface 95 and the communication interface 96 may be shared as an interface connected to an external device.

The computer 90 may be configured so that input devices such as a keyboard, a mouse, and a touch panel can be connected as necessary. These input devices are used for inputting information and settings. Note that when a touch panel is used as an input device, the display screen of the display device may be configured to also serve as an interface of the input device. Data exchange between the processor 91 and the input device may be mediated by the input interface 95.

The communication interface 96 is connected to a host system such as another computer or server through a network. The host system transmits the phase distribution of display information used in each embodiment to the computer 90 via the communication interface 96. The host system may generate the phase distribution used in each embodiment by itself, or may acquire it from another system or apparatus.

Also, the computer 90 may be provided with a display device for displaying information. When the display device is provided, the computer 90 is preferably provided with a display control device (not shown) for controlling the display of the display device. The display device may be connected to the computer 90 via the input interface 95.

Further, the computer 90 may be provided with a reader / writer as necessary. The reader / writer is connected to the bus 99 and reads a data program from the recording medium and writes a processing result of the computer 90 to the recording medium between the processor 91 and a recording medium (program recording medium) (not shown). Mediate. The recording medium can be realized by a semiconductor recording medium such as an SD (Secure Digital) card or a USB (Universal Serial Bus) memory. The recording medium may be realized by a magnetic recording medium such as a flexible disk, an optical recording medium such as a CD (Compact Disk) or a DVD (Digital Versatile Disk), and other recording media.

The above is an example of a hardware configuration for enabling the control device according to each embodiment. Note that the hardware configuration of FIG. 35 is an example of a hardware configuration for enabling the display device according to the present embodiment, and does not limit the scope of the present invention. A processing program that causes a computer to execute processing in the display device according to the present embodiment is also included in the scope of the present invention. Furthermore, a program recording medium that records the processing program according to the embodiment of the present invention is also included in the scope of the present invention.

(Use scene)
Finally, examples of usage scenes of the display device and the display system according to the embodiments of the present invention will be given. In the following usage scene, an example using the display device 3 according to the third embodiment is shown, but the display devices 1 to 7 and the eighth embodiment according to the first to seventh embodiments. Any of the display systems 8 according to the above may be applied.

FIG. 36 assumes a usage scene in which the display device according to the embodiment of the present invention is applied to a weather forecast.

The sub-screens 31-1 to 3-3 display the altitude cloud display information 111-1 to 111-3 associated with the sub-screens 31-1 to 31-3. Each of the sub-screens 31-1 to 31-3 shows the traveling direction of the cloud and the state of cloud expansion. According to the example of FIG. 36, since the cloud state can be displayed at every altitude, the subsequent weather state can be grasped more intuitively.

36, a user such as a weather forecaster can more intuitively grasp past, present, and future weather conditions. In addition, according to the usage scene of FIG. 36, a user such as a weather forecaster who has live weather information on a television broadcast can explain so that the viewer can more intuitively grasp the weather situation.

FIG. 37 assumes a usage scene in which the display device according to the embodiment of the present invention is applied to an airport control system.

Suppose that the aircraft to be displayed is flying at an altitude corresponding to the sub-screen 31-2. On the sub-screen 31-2, display information 112-1 of the aircraft is displayed. Here, it is assumed that a flock of birds as another display object is observed at an altitude corresponding to the sub-screen 31-2. At this time, the display information 112-2 of the flock of birds is displayed on the sub-screen 31-2.

When the aircraft display information 112-1 and the bird flock display information 112-2 are moving toward the same point, the sub-screen 31-2 displays the aircraft display information 112-1 and the bird flock display. A state in which the information 112-2 moves toward the same position is displayed. In this case, there is a risk that the aircraft and the bird collide in real space. In such a case, the user of the control system may call attention to the aircraft or threaten the flock of birds based on the display information on the display device 3.

37, a user such as an airport controller can more intuitively grasp the situation around the airport in addition to the control of the flight state of the aircraft.

FIG. 38 assumes a usage scene in which the display device according to the embodiment of the present invention is applied to fisheries.

Each of the sub-screens 31-1 to 3-3 displays the fish school display information 113-1 to 13-3 at the water depth associated with each of the sub-screens 31-1 to 31-3. What is necessary is just to acquire a fish school, for example with a fish finder.

For example, the predicted traveling direction of the school of fish is displayed as display information 113-1 on the sub-screen 31-1. For example, display information 113-2 indicating that a large school of fish is moving in a certain direction is displayed on the sub-screen 31-2. For example, display information 113-3 indicating that a small school of fish is migrating is displayed on the sub-screen 31-3. Although not shown in FIG. 38, display information such as crabs and shrimps on the seabed may be displayed on the surface of the stereoscopic display unit 50.

38, a user such as a fisherman can intuitively grasp an underwater fish school rather than a two-dimensional screen.

The above usage scenes of FIGS. 36 to 38 show application examples of the display device and the display system according to each embodiment of the present invention, and do not limit the application range of the present invention.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

This application claims priority based on Japanese Patent Application No. 2015-142689 filed on July 17, 2015, the entire disclosure of which is incorporated herein.

1, 2, 3, 4, 5, 6, 7 Display device 8 Display system 10 Projection device 11 Light source 12 Light source drive unit 15 Spatial modulation element 16 Modulation element control unit 18 Projection unit 20 Control unit 21 Data reception unit 22 Projection condition setting Unit 23 display pattern storage unit 24 projection condition output unit 30 screen 31 subscreen 41 support 42 and 43 variable support 50 three-dimensional display 51 pin 52 cover 60 stage 61 object 62 variable support 70 imaging device 71 image sensor 73 image processing Processor 75 Internal memory 77 Data output unit 80 Management device 81 Observation data reception unit 82 Target determination unit 83 Target state extraction unit 84 Display target data generation unit 85 Display target data transmission unit 90 Computer 91 Processor 92 Main storage device 93 Auxiliary notes Device 95 input-output interface 96 communication interface 99 bus

Claims (18)

1. A screen configured by arranging sub-screens made of a plurality of transparent sheets in which phosphors emitting light of a specific wavelength are dispersed at predetermined intervals; and
   A plurality of projections provided corresponding to each of the plurality of sub-screens, each having a light source and a spatial modulation element including a display surface for displaying a phase distribution for displaying desired display information on the screen Means,
   A display device comprising: control means for controlling the projection means so as to project the desired display information onto the screen.
2. The sub-screen is supported by a support body that expands and contracts according to the control of the control means,
   The display device according to claim 1, wherein the control unit changes a distance between the sub-screens by performing control to expand and contract the support.
3. The projection means is supported on the sub-screen by a support body that expands and contracts according to the control of the control means,
   The display device according to claim 1, wherein the control unit changes a height of the projection unit with respect to the sub-screen by performing a control to expand and contract the support.
4. The display device according to any one of claims 1 to 3, further comprising a stereoscopic display unit that mechanically changes a surface shape.
5. The stereoscopic display means includes:
   Stand,
   A plurality of pins arranged in the same direction on the main surface side of the table;
   A movable mechanism installed on the plurality of pins;
   The plurality of pins has a stretchable cover covering the upper side,
   The control means includes
   The display device according to claim 4, wherein the movable mechanism associated with the plurality of pins is individually controlled to change the surface shape of the stereoscopic display unit in a stereoscopic manner.
6. The stereoscopic display means includes:
   The display device according to claim 4, wherein the display device is disposed below the screen.
7. Comprising a stage supported by a support that expands and contracts in accordance with the control of the control means;
   The display device according to claim 1, wherein the screen is opened at a position where the stage passes.
8. The display device according to claim 7, wherein an object is arranged on the stage.
9. The display device according to claim 7 or 8, wherein the plurality of projection means in the previous period project desired display information on the stage.
10. Comprising imaging means for imaging the screen;
    The control means includes
    The projection unit is controlled to project a user interface on which operation keys are arranged onto the screen, the imaging unit is controlled to image the screen, and the image data captured by the imaging unit is analyzed. 10. The display device according to claim 1, wherein an operation position on the screen is determined, and the operation content is recognized by associating the operation position with the operation key.
11. The display device according to any one of claims 1 to 10, wherein a light absorber is disposed in an optical path of zero-order light included in light projected by the projection unit.
12. The projection means includes
    The display device according to claim 1, further comprising a projection lens that corrects and projects a distortion of an image projected on the sub-screen.
13. The display device according to claim 11, wherein the light absorber is disposed in an optical path of zero-order light that has passed through an opening formed at a position where an optical path of zero-order light included in the light projected by the projection unit intersects the screen. .
14. The display device according to claim 11, wherein a mirror is disposed in an optical path of zero-order light included in light projected by the projection unit, and the light absorber is disposed in an optical path of zero-order light reflected by the mirror.
15. The display device according to claim 1, wherein the sub-screen is configured by stacking at least two transparent sheets in which phosphors that emit light of different wavelengths are dispersed.
16. The sub-screen is configured by superposing at least two transparent sheets in which phosphors emitting light of different wavelengths are dispersed, and an optical path of zero-order light included in the light projected from the projection device is the sub-screen. The display device according to claim 11, wherein the display device is configured to be detached from the screen.
17. The display device according to claim 16, wherein the projection unit projects projection light onto at least two sub-screens.
18. Management means for acquiring observation data in a specific range, extracting display target data related to a display target from the acquired observation data, and transmitting the extracted display target data;
    In order to display desired display information on a screen configured by arranging subscreens composed of a plurality of transparent sheets dispersed with phosphors emitting light of a specific wavelength at a predetermined interval A plurality of projection means provided corresponding to each of the plurality of sub-screens, and projecting desired display information onto the screen. And a control unit that controls the projection unit to receive the display target data from the management unit and display the desired display information based on the received display target data.

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