WO2014195781A1

WO2014195781A1 - Modular holographic display case

Info

Publication number: WO2014195781A1
Application number: PCT/IB2014/000928
Authority: WO
Inventors: Christian LE BA
Original assignee: Two P Sas
Priority date: 2013-06-07
Filing date: 2014-06-03
Publication date: 2014-12-11
Also published as: FR3006777A1; FR3006777B1

Abstract

Animated modular display case comprising: -a holographic reflector (3), mountable between two plates, in a position allowing stationary or animated holograms to be projected; -a supporting plate (1) provided with a zone (2) for fastening said holographic reflector (3); -a holographic projection plate (4), provided with a fastening zone (5) for adjusting said plate, on the upper end of the holographic reflector (3); -said display case being changeable between two modes, namely a "deployed" mode in which the holographic reflector (3), the supporting plate (1) and the projection plate are deployed so as to form a holographic display case with the holographic reflector (3) inclined between the two plates (1) and (4) so as to form a "Z", and a "compact" mode in which the holographic reflector (3), the supporting plate (1) and the projection plate (4) are substantially near one another, in substantially parallel planes.

Description

MODULAR HOLOGRAPHIC DISPLAY TECHNICAL FIELD OF THE INVENTION

The present invention relates to a modular holographic display for use with a multimedia device for the purpose of performing on a holographic reflector of the display a projection of fixed or animated holograms.

STATE OF THE PRIOR ART

The patent application CN20121160781 proposes a holographic system for performing holographic presentations in a very large stage universe such as a room.

CN20122346834 discloses a pyramidal display rack intended to perform holographic presentations.

JP19950181700 also describes a display configured to perform holographic presentations on an object placed in a scene.

All these devices, like all devices known to date, are products of relatively large size, intended to remain on a given site. Although transport may be possible, it involves considerable logistical means, high costs, and a great deal of complexity in implementation.

EP2508933 discloses a 3D display device comprising at least a first image source projecting at least one image on at least one semi-transparent mirror, thereby creating a 3D object perceived in a space defined by the semi mirror -Transparent and a case. The housing and the semi-transparent mirror are removably mounted and the housing is foldable. The device is provided with walls, it has a large number of components and produces a visual effect without surprise for the user. WO2011 / 045437 discloses an interactive 3D display device comprising at least a first image source projected on a semi-transparent mirror thereby creating a 3D object perceived in a space defined by the semi-transparent mirror and a base. This base includes a movable platen and the interactive 3D display further comprises means for manipulating the scene and means for correlating the movement of the scene and the perceived 3D object. The presence of a rotating scene leads to a complex and expensive construction. The correlation between the scene and the animated object causes serious technical complications, which must be taken into account for each staging performed.

To overcome these disadvantages, the invention provides different technical means.

SUMMARY OF THE INVENTION

First, a first object of the invention is to provide a multimedia display that is both easy to transport and easy and quick to implement in order to quickly perform a holographic type projection following a transport phase.

Another object of the invention is to provide a lightweight and inexpensive multimedia display.

To do this, the invention provides a modular holographic display comprising:

a holographic reflector, mountable between two plates, in a position permitting projection of fixed or animated holograms;

said two plates comprising:

a support plate provided with a support attachment area for said holographic reflector;

a holographic projection plate, provided with a fixing zone of support for adapting said plate to the upper end of the holographic reflector;

said display being adjustable between two modes, namely:

i) a "compact" mode, in which the holographic reflector, the support plate and the projection plate are substantially close to each other, in substantially parallel planes; and

ii) a "deployed" mode, in which the support plate and the projection plate are spaced from each other and fixed to each other by the reflector, the holographic reflector, the support plate and the projection plate being arranged to form a holographic display with the holographic reflector inclined between the two plates so as to form a "Z".

According to such a modular architecture, the display has excellent characteristics of mountability / disassembly, great ergonomics, and significantly improved transportability compared to fixed displays known to date.

According to an advantageous embodiment, the attachment zones are slots in which the ends of the reflector are inserted to form the deployed mode.

Advantageously, the slots are inclined so as to incline the reflector relative to the plates with an angle of between 25 ° and 65 ° and more preferably of substantially 45 °.

According to various advantageous embodiments, the display is removable and / or foldable.

According to another advantageous embodiment, the holographic projection plate comprises a location for a multimedia device with a screen serving as a projector and an opening through which a projection can be performed on the holographic reflector. Advantageously, the holographic reflector is a plate of translucent or partially translucent material.

According to yet another embodiment, the support plate comprises a power supply input cooperating with a connector in a support fixing zone, the reflector comprises contacts at each of its ends, the projection plate comprises a power supply output for connection on the one hand with a multimedia device with a posable screen and connectable on the holographic projection plate and on the other hand with a connector provided in the projection plate fixing area.

According to another embodiment, the holographic reflector comprises a conductive sector for transmitting electrical energy between the connectors of the two attachment zones.

According to yet another variant, the display comprises a plurality of removable dimensional adapters for the use of a plurality of multimedia devices of different size and / or external profile.

DESCRIPTION OF THE FIGURES

All the details of implementation are given in the description which follows, supplemented by FIGS. 1 to 3, presented solely for purposes of non-limiting examples, and in which:

FIG 1 is a perspective view of an exemplary display according to the invention;

FIG. 2 is a section of a cross section of the display of FIG. 1; FIG 3 is a section of a cross section of an alternative embodiment of the display of Figure 1; FIG 4 is a perspective view of an exemplary display according to the invention provided with adapters for projectors of different profiles and / or dimensions.

DETAILED DESCRIPTION OF THE INVENTION

By holographic projection, or holographic or hologram is meant a projection of an image or a stream of images in a scene in which there is an inclined reflector. Such an arrangement that allows to project a floating image simulating a 3D effect.

[0023] Figure 1 illustrates an embodiment in which the display is presented in perspective. In order to best achieve the goals of modularity, lightness and ease of use, the display has few components, and they are designed to make the use as simple and fast as possible. The main components are the lower plate 1, the upper plate 2 and the holographic reflector 3. The two plates 1 and 4 are provided for mounting with the substantially parallel plates, spaced from each other so as to release a space Scenic 10 which will be used for viewing fixed or animated holographic images. In the illustrated example, the plates are spaced from one another and fixed to each other by means of the holographic reflector 3. Each of the plates has a fixing zone, 2 for the lower plate 1 and 5 for the top plate 4. In this example, the zones take the form of slots in which the ends of the reflector are inserted, with a substantially tight fit ensuring a solid attachment, while remaining removable. The slots are inclined so that the holographic reflector 3 is also inclined relative to the plates 1 and 4. The angle of inclination alpha is advantageously provided between 25 and 65 degrees, and more preferably located in the vicinity of 45 degrees . This inclined angle makes it possible to produce the virtual image effect obtained by means of a projection coming from the holographic projection plate 4. The display provided with a reflector inclined in this way has a "Z" shaped profile. . Projection is advantageously provided by a projector with known type of screen, such as a PDA or Smartphone, or tablet-type laptop, a led or Icd screen, etc., serving as a projector, positioned in a housing 6 provided in the plate 4. The housing 6 is provided in the portion of the plate 4 located in front of the reflector 3, above it. An opening 7 made under the housing 6 frees the screen of the projector so that said screen can project the images to the reflector 3 of the stage space 10.

To ensure the lightness of the assembly, the plates 1 and 4 are preferably made of plastic or composite material, light metal alloy, wood or bamboo.

To switch from the expanded mode illustrated in Figures 1 and 2 to the compact mode, the two plates 1 and 4 are separated from the holographic reflector 3. The three parts can then be stacked against each other, with a final volume significantly lower than the volume obtained in deployed mode. The pieces can then be rearranged as shown in Figures 1 and 2, so as to obtain the display in deployed deployed mode for making holographic projections.

Figure 3 shows an alternative embodiment in which the screen 3 comprises two hinges 8 and 9 provided in the edge zones of the holographic reflector, near each of the plates 1 and 4. Locks (or any other means allowing to set the reflector angularly in expanded mode with the plates 1 and 4 substantially parallel), allow to fix the display in expanded mode or fold in compact mode. This folding variant is particularly advantageous because it allows to fold and unfold a display very easily and very quickly. This mode is well suited to displays requiring frequent movement, for example to perform demonstrations or screenings in different places. The display uses a holographic reflector of known type, such as a plate of translucent or partially translucent material such as glass, polyurethane, etc.. The degree of transparency is advantageously between 50 and 90% and more preferably between 80 and 90%.

The projector used may comprise an internal source of electrical energy. However, if the presentations are intended to last beyond the period of normal use of the batteries, the support plate 1 comprises a power supply input cooperating with a connector in the fixing zone 2, the reflector 3 comprises contacts at each of its ends, the projection plate 4 comprises a power supply output for connection on the one hand with a multimedia device mountable and connectable on the holographic projection plate 4 and on the other hand with a connector provided in the zone 5. Such an arrangement makes it possible to connect the display unit to the sector or to an external source and to transmit the power supply from the bottom of the display unit upwards into the area of the projector. The transport of energy from the bottom plate 1 to that of the top 4 can be carried out by electrical wires or, advantageously, by means of a conductive sector for transmission of electrical energy between the connectors of the two fixing areas 2 and 5.

To allow the use of several types and / or dimensions of projectors, a plurality of dimensional adapters 11 allowing the use of a plurality of multimedia devices of different size and / or external profile are provided, such as shown in Figure 4.

The figures and their descriptions made above illustrate the invention rather than limiting it. In particular, the invention and its various variants have just been described in connection with a particular example comprising a holographic reflector for both the projections and to secure the two plates 1 and 4. Nevertheless, it is obvious to a person skilled in the art that the invention can be extended to other embodiments in which variants are provided complementary means to the reflector 3 to remotely fix the two plates substantially parallel.

Also as an alternative, there is provided an "inverted" embodiment, wherein the projection plate serves as a support plate. The screen positioned in the support then makes a holographic type projection upwards, thanks to the holographic reflector which makes it possible to project a floating image simulating a 3D effect.

The reference signs in the claims are not limiting in nature. The verbs "understand" and "include" do not exclude the presence of elements other than those listed in the claims. The word "a" preceding an element does not exclude the presence of a plurality of such elements.

Claims

1. Modular holographic display comprising:

a holographic reflector (3), mountable between two plates (1, 4), in a position permitting projection of fixed or animated holograms;

said two plates comprising:

a support plate (1) provided with a support fixing zone (2) for said holographic reflector (3);

a holographic projection plate (4), provided with a projection plate fixing zone (5) for adapting said plate to the upper end of the holographic reflector (3);

said display being adjustable between two modes, namely:

i) a "compact" mode, in which the holographic reflector (3), the support plate (1) and the projection plate (4) are substantially close to each other, in substantially parallel planes; and

ii) a "deployed" mode, in which the support plate (1) and the projection plate (4) are spaced from one another and fixed to each other by the reflector (3), the holographic reflector (3), the support plate (1) and the projection plate being arranged to form a holographic display with the holographic reflector (3) inclined between the two plates (1) and (4) so as to form a "Z".

2. Display unit according to claim 1, wherein the attachment areas (2, 5) are slots in which the ends of the reflector (3) are inserted to form the expanded mode.

3. Display unit according to claim 2, wherein the slots (2, 5) are inclined so as to incline the reflector relative to the plates (1, 4) with an angle of between 25 ° and 65 °.

4. Display stand according to claim 2, wherein the slots (2, 5) are inclined so as to incline the reflector relative to the plates (1, 4) at an angle of 45 °.

5. Display unit according to one of the preceding claims 1 to 4, wherein the display is removable.

6. Display unit according to one of the preceding claims 1 to 4, wherein the display is foldable.

7. Display unit according to one of claims 1 to 6, wherein the holographic reflector (3) is a plate of translucent or partially translucent material.

8. Display stand according to one of the preceding claims, wherein the holographic projection plate (4) comprises a location for a projection screen and an opening (7) through which a projection can be performed on the holographic reflector (3). .

9. Display unit according to one of the preceding claims, wherein the support plate (1) comprises a power supply input cooperating with a connector in support fixing area (2), the reflector (3) comprises contacts to at each of its ends, the projection plate (4) has a power supply output for connection on the one hand with a posable projection screen and connectable on the holographic projection plate (4) and on the other hand with a connector provided in the projection plate mounting area (5).

10. Display stand according to claim 9, wherein the holographic reflector comprises a conductive sector for transmitting electrical energy between the connectors of the two attachment zones (2) and (5).

11. Display according to one of the preceding claims, comprising a plurality of removable dimensional adapters for the use of a plurality of multimedia devices of different size and / or external profile.