WO2014109026A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2014109026A1
WO2014109026A1 PCT/JP2013/050256 JP2013050256W WO2014109026A1 WO 2014109026 A1 WO2014109026 A1 WO 2014109026A1 JP 2013050256 W JP2013050256 W JP 2013050256W WO 2014109026 A1 WO2014109026 A1 WO 2014109026A1
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WO
WIPO (PCT)
Prior art keywords
screen
state
display
control information
image
Prior art date
Application number
PCT/JP2013/050256
Other languages
English (en)
Japanese (ja)
Inventor
橋川　広和
Original Assignee
パイオニア株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パイオニア株式会社 filed Critical パイオニア株式会社
Priority to PCT/JP2013/050256 priority Critical patent/WO2014109026A1/fr
Priority to JP2014556261A priority patent/JP6081494B2/ja
Publication of WO2014109026A1 publication Critical patent/WO2014109026A1/fr

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F11/00—Arrangements in shop windows, shop floors or show cases
    • A47F11/06—Means for bringing about special optical effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/02—Signs, boards, or panels, illuminated by artificial light sources positioned in front of the insignia
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
    • G09F19/226—External wall display means; Facade advertising means

Definitions

  • the present invention relates to a display device that displays video.
  • Patent Document 1 describes that a hologram screen is provided on a cover glass of a show window, a showcase, etc., and information is displayed at the same time as the exhibits are displayed.
  • Patent Document 2 describes that a translucent screen sheet is installed on the front glass of a showcase, and information is projected and displayed on the screen sheet.
  • the hologram screen since the hologram screen generates a diffraction phenomenon using the refractive index distribution inside the screen, the light extraction efficiency is poor. Also, for the same reason, the clearness is lost due to the influence of light from the exhibits installed in the showcase.
  • the hologram screen has a problem that it is very expensive.
  • the actual exhibit behind the video display area on the translucent screen becomes invisible.
  • the viewpoint is changed, the positional relationship between the video display area on the screen and the actual exhibit changes, so that the video display area and the actual exhibit overlap or open, so that it is optimal (ie production The viewpoint position is fixed), and it is not suitable for applications in which a plurality of observers observe at the same time.
  • the image display area on the screen is always exposed to light emitted from the actual display from behind the screen, and there is a problem that the contrast of the display image is always poor.
  • an object of the present invention is to provide a display device that can clearly observe, for example, images displayed on a screen and exhibits.
  • the invention described in claim 1 has a first surface and a second surface which is a back surface of the first surface, and has a transmission state and a scattering state with respect to visible light.
  • a switchable screen and control means for switching the transmission state and the scattering state of the screen.
  • the control means controls the illumination on the second surface side.
  • Illumination control information for reducing light intensity is output
  • projection control information for projecting a first image on the screen is output during any period when the screen is switched to the scattering state, and the screen is in the transmission state
  • the projection control information for stopping projection of the first video is output, and the second surface is switched to an arbitrary period during which the screen is switched to the transmission state.
  • the outputs illumination control data for increasing the light intensity of the lighting it is a display device according to claim.
  • a screen having a first surface and a second surface that is the back surface of the first surface and capable of switching between a transmission state and a scattering state with respect to visible light
  • the screen Control means for switching the transmission state and the scattering state of the second image, and the control means, when the screen is switched to the scattering state, displays the light intensity of the second image on the display means on the second surface side.
  • the projection control information for stopping the projection of the first video is output, and the second means is displayed on the display means during an arbitrary period when the screen is switched to the transmission state. And outputs the display control information for increasing the light intensity of the image, it is a display device according to claim.
  • the invention described in claim 8 includes a screen having a first surface and a second surface which is the back surface of the first surface, and capable of switching between a transmissive state and a scattering state with respect to visible light.
  • a control step of switching a scattering state and when the screen is switched to the scattering state, the control step outputs illumination control information for reducing light intensity of illumination on the second surface side, and the screen
  • illumination control information for reducing light intensity of illumination on the second surface side and the screen
  • projection control information for projecting the first video onto the screen is output, and when the screen is switched to the transmissive state, the projection of the first video is performed.
  • the invention described in claim 9 includes a screen having a first surface and a second surface which is the back surface of the first surface, and capable of switching between a transmissive state and a scattering state with respect to visible light.
  • Display control information including a control step of switching a scattering state, wherein the control step reduces the light intensity of the second image on the display means on the second surface side when the screen is switched to the scattering state.
  • the projection control information for stopping the projection of the first video is output, and the light intensity of the second video is increased on the display means during an arbitrary period when the screen is switched to the transmission state. And it outputs the display control information to a display wherein the.
  • the invention described in claim 10 is a display program characterized by causing a display method according to claim 8 to be executed by a computer.
  • the invention described in claim 11 is a display program characterized in that the display method according to claim 9 is executed by a computer.
  • the invention described in claim 12 is a computer-readable recording medium in which the display program according to claim 10 is stored.
  • the invention described in claim 13 is a computer-readable recording medium in which the display program according to claim 11 is stored.
  • FIG. 2 It is a schematic block diagram of the exhibition apparatus provided with the display apparatus concerning the 1st Example of this invention. It is typical sectional drawing of the screen shown by FIG. FIG. 2 is a timing chart of the state of the screen shown in FIG. 1, the linear transmittance of light beams of a light control unit, and the intensity of image light projected from a projector. 2 is a flowchart illustrating an operation of the display device illustrated in FIG. 1. It is explanatory drawing which performs a cross fade by changing the duty of the scattering state of a screen shown by FIG. 1, and a permeation
  • FIG. 8 is a timing chart of the state of the screen shown in FIG. 7, the linear transmittance of light beams from the light control unit, and the intensity of image light projected from the projector.
  • FIG. 8 is an explanatory diagram of transmission and display of a video source displayed on the screen and the opaque display shown in FIG. 7.
  • a display device has a first surface and a second surface that is the back surface of the first surface, and a screen that can switch between a transmission state and a scattering state for visible light, and And control means for switching the transmission state and the scattering state of the screen.
  • control unit when the control unit is switching the screen to the scattering state, it outputs illumination control information for reducing the light intensity of the illumination on the second surface side, and in an arbitrary period during which the screen is switched to the scattering state,
  • the projection control information for projecting the first video on the screen is output and the screen is switched to the transmission state
  • the projection control information for stopping the projection of the first video is output, and the screen is switched to the transmission state.
  • Illumination control information for increasing the light intensity of the illumination on the second surface side is output during an arbitrary period. In this way, when the screen is in a scattered state, the light intensity of the illumination for displaying the image and illuminating the exhibits etc. is reduced, so that the contrast of the displayed image can be made very high.
  • the screen is in a transmissive state, it is possible to increase the light intensity of illumination and observe an exhibit or the like. Therefore, it is possible to clearly observe the video displayed on the screen and the exhibit.
  • a display device has a first surface and a second surface that is the back surface of the first surface, and a screen that can switch between a transmission state and a scattering state for visible light, and And control means for switching the transmission state and the scattering state of the screen.
  • the control means When the screen is switched to the scattering state, the control means outputs display control information for reducing the light intensity of the second image to the second surface side display means, and switches the screen to the scattering state.
  • the projection control information for projecting the first video on the screen is output during an arbitrary period, and when the screen is switched to the transmission state, the projection control information for stopping the projection of the first video is output, and the screen
  • the display control information for increasing the light intensity of the second video is output to the display means on the second surface side in an arbitrary period during which the screen is switched to the transmission state.
  • the display control information for increasing the light intensity of the second video is output to the display means on the second surface side in an arbitrary period during which the screen is switched to the transmission state.
  • control means may alternately switch the transmission state and the scattering state of the screen at a predetermined cycle.
  • control means may change the ratio between the transmission state and the scattering state in one cycle of the predetermined cycle of the screen. By doing so, for example, it is possible to increase the ratio of the screen display and the exhibits and display means that want to show more clearly, such as the screen display and the contents of the exhibits and display means. Each way of viewing can be changed accordingly.
  • control means gradually increases the ratio of the transmission state and the ratio of the transmission state and gradually decreases the ratio of the transmission state and the ratio of the transmission state in one cycle of the predetermined period of the screen. You may make it change so that it may reduce gradually and the ratio of a scattering state may increase gradually. By doing in this way, for example, it is possible to observe the exhibits and display means gradually from the screen display state, and then it is possible to perform effects such as crossfading that changes to the display state of the exhibits and display means thereafter. .
  • control means may include information for changing the light intensity of the first video in the projection control information. By doing so, it is possible to increase the light intensity of the screen display and the exhibits and display means that want to show more clearly, such as the contents of the screen display and the exhibits and display means, etc. Each way of showing can be changed according to.
  • control means gradually increases the light intensity of the first image and gradually decreases the light intensity of the illumination or the second image, gradually decreases the light intensity of the first image and the illumination or the second image.
  • the light intensity of the second image may be gradually increased. By doing so, for example, by changing the light intensity, it is possible to achieve an effect such as a crossfade.
  • a display method includes a first surface and a second surface that is the back surface of the first surface, and a screen capable of switching between a transmission state and a scattering state with respect to visible light.
  • a control step of switching between the transmission state and the scattering state it outputs illumination control information for reducing the light intensity of the illumination on the second surface side, and in an arbitrary period during which the screen is switched to the scattering state,
  • the projection control information for projecting the first video on the screen is output and the screen is switched to the transmission state
  • the projection control information for stopping the projection of the first video is output, and the screen is switched to the transmission state.
  • Illumination control information for increasing the light intensity of the illumination on the second surface side is output during an arbitrary period.
  • the screen is in a scattered state, the light intensity of the illumination for displaying the image and illuminating the exhibits etc. is reduced, so that the contrast of the displayed image can be made very high.
  • the screen is in a transmissive state, it is possible to increase the light intensity of illumination and observe an exhibit or the like. Therefore, it is possible to clearly observe the video displayed on the screen and the exhibit.
  • a display method includes a first surface and a second surface that is the back surface of the first surface, and a screen that can switch between a transmission state and a scattering state with respect to visible light. Includes a control step of switching between the transmission state and the scattering state.
  • display control information for reducing the light intensity of the second image is output to the display means on the second surface side, and the screen is switched to the scattering state.
  • projection control information for projecting the first video on the screen is output, and when the screen is switched to the transmission state, projection control information for stopping the projection of the first video is output and transmitted through the screen.
  • Display control information for increasing the light intensity of the second video is output to the display means on the second surface side during an arbitrary period of switching to the state.
  • the light intensity of the display means that displays the first video and displays the second video is reduced, so the first video that is displayed
  • the contrast of the second image can be displayed very high on the display means when the screen is in a transmissive state. Therefore, it is possible to clearly observe both the first video displayed on the screen and the second video displayed on the display means.
  • the display method described above may be configured as a display program that is executed by a computer. By doing so, since the program is executed by a computer, dedicated hardware or the like is not necessary, and it can be installed and functioned in a general-purpose information processing apparatus.
  • the display program described above may be stored in a computer-readable recording medium.
  • the program can be distributed as a single unit in addition to being incorporated in the device, and version upgrades can be easily performed.
  • the exhibition apparatus 1 includes a display device 2, a projector 11, and a lighting device 41.
  • the display device 2 and the projector 11 are transmissive projection devices that project (project) the image light (projected image) of the projector 11 and transmit and scatter it on the screen 21 (projection surface).
  • the screen 21 is disposed between the observer and the actual exhibit 51.
  • the actual exhibit 51 is accommodated in a show window, a showcase, and the like. At least one surface facing the observer may be configured by the screen 21 or may be attached.
  • the display device 2 includes a screen 21 and a synchronization control unit 31.
  • FIG. 2 is a schematic cross-sectional view of the screen 21 that can control the optical state.
  • the screen 21 shown in FIG. 2 has a light control unit 25 that is an optical layer in which a composite material containing liquid crystal is sandwiched between a pair of transparent glass substrates 23 and 24.
  • a counter electrode 26 is formed on the entire surface of one glass substrate 24 on the light control unit 25 side.
  • a control electrode 27 is formed on the entire surface of the other glass substrate 23 on the light control section 25 side.
  • An intermediate layer made of an insulator may be formed between the electrodes 26 and 27 and the light control unit 25.
  • the screen 21 includes a light control unit 25 made of an element or a material that can change an optical state by applying a voltage.
  • the optical state of the light control unit 25 is a state in which the scattering state displays an image, and a transparent transmission state in which the scattering of incident light is smaller and the linear transmittance of light is higher than that is a non-image display state in which no image is displayed. It is.
  • the light control unit 25 is disposed between the counter electrode 26 and the control electrode 27. That is, the light control unit 25 is sandwiched between two electrodes and can switch an optical state between a transmission state and a scattering state by a voltage applied between the two electrodes.
  • the light control unit 25 one that can switch an optical state between a scattering state and a transmission state, for example, a so-called polymer dispersed liquid crystal (PDLC) in which nematic liquid crystal domains are distributed in a polymer can be used.
  • PDLC polymer dispersed liquid crystal
  • a better optical state can be realized by using a composite material that is associated with the orientation of liquid crystal molecules in which a polymer network forms domains in a state where no voltage is applied.
  • a suitable amount of photopolymerizable monomer, nematic liquid crystal and polymerization initiating material are mixed and placed between 5 and 50 micron substrates of glass or resin constituting the light control member.
  • the liquid crystal domain can be dispersed in the polymer by irradiating with ultraviolet rays under conditions such as phase separation temperature.
  • the normal mode is designed so that the scattering due to the refractive index difference between the polymer and the liquid crystal is large when no voltage is applied, and the refractive index difference in the substrate normal direction is small when the liquid crystal is aligned by an electric field. Called.
  • a photopolymerizable monomer As a composite material associated with the orientation of liquid crystal molecules in which a polymer network forms domains in a state where no voltage is applied, a photopolymerizable monomer has liquid crystal properties.
  • the substrate is subjected to an alignment process such as rubbing, and the mixed material disposed between the substrates has an arrangement based on the alignment process.
  • the above initial arrangement is obtained when no voltage is applied, and scattering occurs due to the difference in refractive index between the liquid crystal domain and the polymer when the voltage is applied.
  • the unidirectional arrangement it has optical characteristics depending on this orientation.
  • a transmission state is obtained when a predetermined voltage is applied between the electrodes, and a scattering state is obtained when no voltage is applied between the electrodes.
  • a scattering state occurs when a predetermined voltage is applied between the electrodes, and a transmission state occurs when no voltage is applied between the electrodes.
  • the counter electrode 26 and the control electrode 27 are formed as transparent electrodes using, for example, ITO (indium tin oxide).
  • the screen 21 appears to be clouded, for example.
  • the dimming unit 25 is in the transmissive state
  • the screen 21 is in the transmissive state, so that the actual exhibit 51 can be observed through the screen 21. Therefore, when the light control unit 25 is in the scattering state, the image light projected from the projector 11 can be displayed on the screen 21, and in the transmission state, the screen 21 has transparency that can recognize the actual exhibit 51.
  • the surface 24a of the screen 21 that does not contact the light control portion 25 of the glass substrate 24 is the first surface
  • the surface 23a of the glass substrate 23 that does not contact the light control portion 25 is the second surface 23a.
  • a voltage is applied to the screen 21 so as to generate a potential difference between the control electrode 27 and the counter electrode 26.
  • the drive waveform (drive voltage waveform)
  • one electrode may be in a DC state (0 volt)
  • an AC voltage may be applied to the other electrode, or an AC voltage whose phase is inverted to both electrodes. May be applied to generate a potential difference. That is, when a voltage is applied so as to generate a potential difference between the control electrode 27 and the counter electrode 26, the screen 21 is in a transmission state when in the normal mode, and is in a scattering state when in the reverse mode. In the following description, the screen 21 may be in either the normal mode or the reverse mode.
  • the synchronization control unit 31 controls the dimming unit 25 of the screen 21 on which the image light is projected to scatter the image light, and is not projected.
  • a voltage is applied so that the light control unit 25 is in a scattering state or a transmission state.
  • the synchronization control unit 31 is connected to the projector 11, the screen 21, and the illumination device 41.
  • the synchronization control unit 31 controls the switching of the optical state of the screen 21 (the light control unit 25) and the lighting device 41 between turning on and off in synchronization with the projection of the image light of the projector 11.
  • a synchronization signal synchronized with the video frame period of the video signal input to the projector 11 can be used as the synchronization signal input from the projector 11 to the synchronization control unit 31, for example, a synchronization signal synchronized with the video frame period of the video signal input to the projector 11 can be used.
  • the synchronization control unit 31 may include a CPU (Central Processing Unit), a memory, and the like, and may be configured by a computer whose operation is controlled by a program, or an ASIC (Application Specific Specific Integrated Circuit) or the like. It may be hardware.
  • CPU Central Processing Unit
  • ASIC Application Specific Specific Integrated Circuit
  • the projector 11 is disposed on the real display 51 side of the screen 21.
  • the projector 11 may be any projector as long as it can project video light modulated by video information onto the screen 21. That is, the first video is projected on the screen 21.
  • the video information is obtained from a video signal input to the projector 11.
  • the projector 11 may receive a video signal of a still image as well as a video signal of a moving image. Further, the projector 11 may be arranged not only on the real display 51 side of the screen 21 but also on the observer side.
  • the illumination device 41 is preferably arranged on the entity display 51 side of the screen 21, but can also be arranged on the viewer side of the screen 21.
  • the lighting device 41 illuminates the actual exhibit 51.
  • the illumination device 41 is preferably capable of switching on and off at a high speed of one video cycle or less to be described later, such as LED (Light-Emitting-Diode) light and organic EL (Electro-Luminescence) illumination.
  • FIG. 3 shows the state of the screen 21 configured as described above, the linear transmittance of the light beam of the light control unit 25, the intensity (light intensity) of the image light projected from the projector 11, and the illumination light intensity of the illumination device 41. It is a timing chart.
  • the screen 21 changes between a scattering state and a transmission state once within one video period. That is, the transmission state and the scattering state are alternately switched at a predetermined cycle.
  • One video cycle is one frame period of a video signal input to the projector 11 and is, for example, about 50 to 60 Hz. Therefore, the screen 21 is switched between the scattering state and the transmission state in a period shorter than one video cycle.
  • the linear transmittance of the light beam of the light control unit 25 decreases. Since light incident on the screen during this period is scattered, an image can be displayed. Accordingly, since the projector 11 projects the image light onto the screen 21, the image light intensity increases and an image is displayed. On the other hand, during the period in which the screen 21 is in the scattering state, the illumination device 41 is switched off. This is because the contrast of the video displayed on the screen 21 is lowered by the influence of the lighting device 41 if the lighting device 41 is lit while the video is displayed.
  • the linear transmittance of the light beam of the light control unit 25 increases. Light incident on the screen during this period is transmitted as it is. Accordingly, the projector 11 stops projecting the image light on the screen 21.
  • the lighting device 41 switches to lighting. When the lighting device 41 is turned on, the real exhibit 51 is illuminated and can be clearly observed through the screen 21.
  • the image of the entire screen is repeatedly projected every one image period, and this repetition is not recognized as blinking by the human eye, but is projected onto the screen 21 by time averaging (integration).
  • the image and the actual exhibit 51 can be simultaneously observed without feeling flicker.
  • a synchronization signal for detecting the head of one video cycle is detected, and the process proceeds to step S2.
  • the synchronization signal may be a synchronization signal synchronized with the video frame period of the video signal input to the projector 11 described above. Note that the projector 11 and the illumination device 41 are set to an initial state in which no image light is projected and a light-off state, respectively.
  • step S2 a voltage is applied to the counter electrode 26 and the control electrode 27 so that the screen 21 is in a scattering state, and the process proceeds to step S3.
  • step S3 image light is projected on the projector 11, and the process proceeds to step S4. That is, projection control information for causing the projector 11 to project video light as the first video is output.
  • the projection control information may be a control signal system in which the start and stop of projection are defined at a high level and a low level of one signal line, and is composed of a combination of a high level and a low level of a plurality of signal lines.
  • a command format in which start and stop of projection are defined in the command or the like may be used.
  • this step is performed after the transient state shown in FIG. 3 has elapsed. The period of the transient state can be calculated in advance by the material constituting the light control unit 25 and the applied voltage.
  • step S4 the projection of the video performed in step S3 is stopped after the elapse of a predetermined period, and the process proceeds to step S5.
  • the projection period of this image is determined according to the period of the scattering state of the screen 21. That is, the projector 11 outputs projection control information for stopping the projection of the image light to the projector 11.
  • step S5 a voltage is applied to the counter electrode 26 and the control electrode 27 so that the screen 21 is in a transmissive state, and the process proceeds to step S6.
  • step S6 the lighting device 41 is turned on and the process proceeds to step S7.
  • this step is performed after the transient state shown in FIG. That is, the illumination control information for lighting the illumination device 41 on the second surface side is output.
  • the illumination control information may be a control signal system in which lighting and extinguishing are defined at a high level and a low level of one signal line, a command composed of a combination of a high level and a low level of a plurality of signal lines, etc. It may be a command format in which ON and OFF are defined.
  • step S7 the lighting device 41 is turned off after a predetermined period of time, and the process proceeds to step S8.
  • the lighting period of the video illumination device 41 is determined according to the period of the transmission state of the screen 21. That is, the illumination control information for turning off the illumination device 41 on the second surface side is output.
  • step S8 it is determined whether or not the use of the exhibition apparatus 1 is to be ended.
  • the flowchart is ended, and when it is not to be ended (NO), the process returns to step S1. That is, this flowchart functions as a control process.
  • the luminance of the screen 21 can be increased by increasing the ratio (hereinafter referred to as duty) of the time during which the light adjusting unit 25 is in the transmission state and the scattering state in one video cycle, and conversely the duty is reduced. Then, the actual exhibit 51 can be clearly illuminated. That is, when the duty is large, the ratio of the scattering state in one video period increases, and when the duty is small, the ratio of the transmission state in one video period increases.
  • the maximum brightness of the screen 21 and the actual exhibit 51 changes depending on the duty.
  • the brightness of the video displayed on the screen 21 can be changed according to the video signal level input to the projector 11 or the intensity of the projection light. It is also possible to make the actual exhibit 51 appear darker or brighter by dimming the lighting device 41. As described above, more complex effects such as a cross-fade effect can be provided by controlling the duty and dimming on the projector 11 side and the illumination device 41 side. Of course, duty control and dimming control may be combined.
  • FIG. 5 is an example in which the crossfade effect is performed by changing the duty.
  • FIG. 5A is basically the same as the timing chart shown in FIG. 3, but as an example, one video period is 10 milliseconds, the scattering state Ta is 5 milliseconds, the transmission state Tb is 4 milliseconds, The transient state when changing to the scattering state and the transmission state is 0.5 milliseconds.
  • the light intensity of the projector 11 is A
  • the illumination light intensity of the illumination device 41 is B.
  • the scattering state time Ta is increased to 1 to 8 milliseconds and the transmission state time Ta is decreased to 8 to 1 millisecond, as shown in FIG.
  • the maximum light intensity (the maximum brightness value of the image on the screen 21) changes in order from 1A to 8A, and the maximum illumination light intensity (the maximum brightness value of the actual exhibit 51 (illumination device 41)) sequentially changes from 8B to 1B. Change.
  • the unit of the cross fading time may be arbitrarily set as long as it is a time longer than one video cycle such as a video cycle or a second.
  • the ratio of the transmission state and the scattering state in one image period of the screen 21 is gradually increased while the ratio of the scattering state is gradually decreased and the ratio of the transmission state is gradually decreased and the scattering is performed.
  • the state ratio is changed to gradually increase. In this way, for example, the image gradually disappears from the state in which the image is displayed on the screen 21, and the actual exhibit 51 starts to gradually appear, and finally only the actual exhibit 51 can be seen. Crossfading effect can be realized.
  • FIG. 5 is an example in which the crossfade effect is performed by changing the light intensity.
  • FIG. 6A is also similar to the timing chart shown in FIG. 5A, except that the scattering state Ta is 1 millisecond, the transmission state Tb is 8 milliseconds, and the transient when changing from the scattering state to the transmission state. The state is fixed at 0.5 milliseconds.
  • the maximum light intensity of the projector 11 is Amax, and the maximum illumination light intensity of the illumination device 41 is Bmax.
  • the maximum light intensity from the projector 11 ( The maximum brightness value of the image on the screen 21 changes in order from 0 to 1 Amax, and the maximum illumination light intensity (the maximum brightness value of the actual exhibit 51 (illumination device 41)) changes in order from 8Bmax to 0.
  • This can be output by including light intensity information for changing the light intensity in addition to the start or stop of projection, lighting or extinguishing, in the projection control information or illumination control information.
  • the light intensity may be designated as an absolute value, or a relative value (such as ⁇ 12.5%) from the current value may be designated.
  • the light intensity of the image is gradually increased and the light intensity of the illumination device 41 is gradually decreased, and the light intensity of the image is gradually decreased and the light intensity of the illumination device 41 is gradually increased.
  • the image gradually disappears from the state in which the image is displayed on the screen 21, and the actual exhibit 51 starts to gradually appear, and finally only the actual exhibit 51 can be seen.
  • Cross-fade effect can be realized without changing the duty.
  • the lighting control information for turning off the lighting device 41 is output to the lighting device 41, and the image light is output from the projector 11 to the screen 21. Is output to the projector 11.
  • the projector 11 When the screen 21 is switched to the transmissive state, the projector 11 outputs projection control information for stopping projection of image light to the projector 11, and outputs illumination control information for lighting the lighting device 41 to the lighting device 41. .
  • the illumination device 41 for displaying the image and illuminating the actual exhibit 51 is turned off, so that the contrast of the displayed image is very high.
  • the lighting device 41 When the screen 21 is in a transmissive state, the lighting device 41 can be turned on to observe the actual exhibit 51. Therefore, the image displayed on the screen 21 and the actual exhibit 51 can be clearly observed. Moreover, since the illuminating device 41 is turned off in the scattering state, the power consumption of the illuminating device 41 can be reduced.
  • the display of the screen 21 and the observation of the actual exhibit 51 can be performed alternately. That is, each display and observation can be performed by time division. Therefore, the display on the screen 21 and the observation of the actual exhibit 51 can be performed simultaneously. Furthermore, since the time division is used, both the image and the actual exhibit 51 can be observed even if the observer moves, and there is no restriction on the observation position.
  • the duty of the transmission state and the scattering state in one video period of the screen 21 is gradually increased as the transmission state ratio is gradually decreased, and the scattering state ratio is gradually decreased, or conversely, the transmission state ratio is gradually decreased.
  • the ratio of the scattering state is changed so as to gradually increase.
  • the light intensity of the projector 11 is gradually increased and the light intensity of the illumination device 41 is gradually decreased. Conversely, the light intensity of the projector 11 is gradually decreased and the light intensity of the illumination device 41 is gradually increased. I am doing so. In this way, for example, by changing the intensity of light, it is possible to perform effects such as crossfading independently of the duty of the transmission state and the scattering state.
  • the degree of freedom of the projection position of the projector 11 is increased.
  • the screen 21 supports the entire visible light range, the wavelength of the image light projected from the projector is not limited. Further, the light transmission and light diffusion efficiency of the screen 21 can be increased by time-sharing control, and light loss hardly occurs.
  • an opaque display 61 as a display means is provided instead of the lighting device 41 and the actual exhibit 51.
  • the opaque display 61 is arranged on the second surface side of the screen 21 like the entity display 51 of the first embodiment, and receives a video signal such as a moving image, a still image, or character information as a second image. It is displayed towards the observer.
  • a flat panel display such as an LED-backlit liquid crystal display or an EL display that can be turned on and off at high speed in the same manner as the lighting device 41 can be used.
  • the opaque display 61 in this embodiment needs to have a luminance that allows an observer to observe the displayed image. Therefore, the opaque display 61 is preferably composed of a self-light emitting element or provided with light emitting means such as a backlight. .
  • FIG. 8 shows the state of the screen 21 of this embodiment, the linear transmittance of the light beam of the light control unit 25, the intensity (light intensity) of the image light projected from the projector 11, and the illumination light intensity of the illumination device 41.
  • a timing chart is shown. As shown in FIG. 8, when the screen 21 is in the scattering state, the image light from the projector 11 is projected as in FIG. When the screen 21 is in the transmissive state, an image is displayed on the opaque display 61. That is, since an image is displayed on the opaque display 61, the emission intensity is increased.
  • the display control information for stopping the video display is output to the opaque display 61 on the second surface side, and the projection control information for projecting the video to the projector 11 is output.
  • projection control information for stopping the projection of the image is output to the projector 11 and display control information for displaying the image on the opaque display 61 on the second surface side is output.
  • the display control information may be started and stopped by a control signal method or a command method.
  • the screen 21 and the opaque display 61 repeatedly project the image of the entire screen every one image period, and this repetition is not recognized as blinking by the human eye.
  • averaging integrating
  • the image projected on the screen 21 and the image displayed on the opaque display 61 can be observed simultaneously without feeling flicker. Effective production is possible.
  • the two video sources are collectively transmitted as one video source, and each of the projectors 11 and the opaque display 61 that receives them extracts each video signal from one video source.
  • a video signal an L-ch (left-eye) video used for 3D (three-dimensional) television broadcasting or the like and a side-by-side signal in which an R-ch (right-eye) video is superimposed are used. it can.
  • FIG. 9 shows an example in which the above-mentioned two video sources are sent together and received, and the respective projectors 11 and opaque display 61 that receive and extract the respective video signals from one video source are displayed.
  • FIG. 9 first, an image for the screen 21 and an image for the opaque display 61 are prepared (FIG. 9A).
  • a video transmission device (not shown) or the like sends the screen 21 video and the opaque display 61 video together into a single video source (video signal) using a side-by-side signal or the like (FIG. 9B).
  • the video signal of the screen video is extracted from the video signals combined into one, and projected onto the screen 21.
  • the video signal of the video for the opaque display 61 is extracted from the combined video signals and displayed (FIG. 9C). Then, it appears that the image for the opaque display 61 is displayed at the back of the screen image positioned in front of the observer (FIG. 9D).
  • cross fade described with reference to FIGS. 5 and 6 can be performed in the same manner.
  • the display control information for stopping the display of the image is output to the opaque display 61, and the image light from the projector 11 is output to the screen 21.
  • Projection control information for projecting is output.
  • projection control information for stopping projection of image light is output from the projector 11, and display control information for displaying an image on the opaque display 61 is output.
  • the display of the screen 21 and the display of the opaque display 61 can be performed alternately. Therefore, each display can be performed in a time division manner. Therefore, the display on the screen 21 and the display on the opaque display 61 can be observed simultaneously.
  • the video source of the video light projected from the projector 11 and the video source displayed on the opaque display 61 are collectively sent to each video source, and each video source is extracted by the projector 11 and the opaque display 61. Since both are projected or displayed, the timing of both images can be synchronized.
  • the period for projecting image light from the projector 11, the period for lighting the illumination device 41, and the period for displaying the opaque display 61 need to be completely matched with the periods for the scattering state and the transmission state. There is no.
  • the image light may be projected from the projector 11 in an arbitrary period between the scattering state periods, and the illumination device 41 is turned on or the opaque display 61 is turned on in an arbitrary period between the transmission state periods. You may make it display.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Projection Apparatus (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Liquid Crystal (AREA)

Abstract

La présente invention porte sur un dispositif d'affichage qui autorise une observation vive d'un objet exposé et d'une vidéo affichée sur un écran. Lorsqu'une unité (31) de commande de synchronisation fait passer un écran (21) à un mode de diffusion, l'unité (31) de commande de synchronisation délivre en sortie, à un dispositif (41) d'éclairage, des informations de commande d'éclairage pour amener le dispositif (41) d'éclairage à s'assombrir ; et délivre en sortie, à un projecteur (11), des informations de commande de projection pour amener une lumière vidéo à être projetée depuis le projecteur (11) vers l'écran (21). Lorsque l'écran (21) passe à un mode d'émission, des informations de commande de projection pour amener une projection d'une lumière vidéo depuis le projecteur (11) à s'arrêter sont délivrées en sortie au projecteur (11), et des informations de commande d'éclairage pour amener le dispositif (41) d'éclairage à s'allumer sont délivrées en sortie au dispositif (41) d'éclairage.
PCT/JP2013/050256 2013-01-10 2013-01-10 Dispositif d'affichage WO2014109026A1 (fr)

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PCT/JP2013/050256 WO2014109026A1 (fr) 2013-01-10 2013-01-10 Dispositif d'affichage
JP2014556261A JP6081494B2 (ja) 2013-01-10 2013-01-10 表示装置、表示方法、表示プログラム及び記録媒体

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WO2015190461A1 (fr) * 2014-06-13 2015-12-17 シャープ株式会社 Dispositif d'affichage
WO2016175120A1 (fr) * 2015-04-28 2016-11-03 シャープ株式会社 Dispositif d'affichage
WO2017126079A1 (fr) * 2016-01-21 2017-07-27 パイオニア株式会社 Dispositif de commande d'affichage

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JPH05191726A (ja) * 1992-01-09 1993-07-30 Nippon Telegr & Teleph Corp <Ntt> 臨場感表示装置
JP2004184979A (ja) * 2002-09-03 2004-07-02 Optrex Corp 画像表示装置
JP2006243068A (ja) * 2005-02-28 2006-09-14 Dainippon Printing Co Ltd スクリーンシステム
JP2007109205A (ja) * 2005-09-14 2007-04-26 Sony Corp 画像表示装置、画像表示方法、プログラムおよび記録媒体
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WO2015190461A1 (fr) * 2014-06-13 2015-12-17 シャープ株式会社 Dispositif d'affichage
US10192493B2 (en) 2014-06-13 2019-01-29 Sharp Kabushiki Kaisha Display device
WO2016175120A1 (fr) * 2015-04-28 2016-11-03 シャープ株式会社 Dispositif d'affichage
WO2017126079A1 (fr) * 2016-01-21 2017-07-27 パイオニア株式会社 Dispositif de commande d'affichage

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