The present invention relates to techniques for a display device for displaying images.
In public spaces such as roads and plazas, public facilities such as station premises, event venues, stadiums, and commercial facilities such as supermarkets and malls, it is preferable that many people who are at various positions with respect to a display device can see the display image for easy viewing. For example, Patent Literature 1 discloses a display including a cylindrical lenticular lens centering on a light source and transparent light control mean, which forms a transparent image contracted in the horizontal direction for each lens constituting the lenticular lens in this transparent light control means.
Patent Literature 1: JP2001-272934 A
However, in the prior art like Patent Literature 1, it is necessary to print prerecorded transparent images on the inner surface of the lenticular lens. For this reason, in order to change the display image, it is necessary to replace or reprint, and the degree of freedom of changing the images to be displayed is low.
Hence, it is an object of the present invention to provide, for example, a display device with improved degree of freedom in changing images to be displayed.
To solve the above problem, the invention according to claim 1 includes: a refraction means for refracting light and magnifying an image; an arrangement support means for arranging and supporting a plurality of the refraction means in a convex shape with respect to a viewpoint side; an image display means that is set in an opposite side to the viewpoint side with respect to the refraction means, and that is for displaying out an image seen from the viewpoint side, on the back surface of a projection surface onto which projection light from an image projection means is projected.
The invention according to claim 2 is the display device according to claim 1, in which the image display means is set on a surface of the refraction means in the opposite side.
The invention according to claim 3 is the display device according to claim 1 or 2, in which the projection light from the image projection means is projected onto the projection surface of the image display means from a plurality of directions.
The invention according to claim 4 is the display device according to any one of claims 1 to 3, further including: the image projection means.
The invention according to claim 5 is the display device according to any one of claims 1 to 4, further including: a reflection means for reflecting the projection light from the image projection means and projecting the reflected projection light onto the projection surface of the image display means.
According to the present invention, since the image displayed out on the back surface of the projection surface on which the projection light from the image projection means is projected can be seen through the refraction means, it is possible to easily change the display image to be displayed on the display device, by changing the projection light output from the image projection means.
An embodiment of the present invention will be described using the drawings.
(1.1 Outline of Configuration and Functions of Display Device)
First, an outline of a configuration and functions of a display device will be described using
As shown in
The refraction means 1a has, for example, a circular-shaped cross section. An example of the refraction means 1a includes, for example, a spherical ball lens as shown in
The arrangement support means 1b arranges each refraction means 1a in a convex shape with respect to a viewpoint 3 side as shown in
Herein, an example of the convex shape of the arrangement support means 1b includes a spherical surface shape having a substantially constant curvature and a cylindrical surface shape having a circular-shaped cross section in a plane perpendicular to the axis of the cylinder. Moreover, the spherical surface shape is a curved surface forming a part of a spherical surface such as a whole spherical surface, a semispherical surface, etc., and is a curved surface having a substantially constant curvature. The cylindrical surface shape is a curved surface forming a part of a cylindrical surface such as a full cylinder, a half cylinder, a ¼ cylinder, etc., and the cross-sectional shape by a plane perpendicular to the axial direction of the cylinder is a circle whose curvature is substantially constant. Incidentally, it may be a curved surface shape etc. whose curvature is not necessarily constant.
Incidentally, as shown in
As shown in
The image display means 1c, as shown in
The image display means 1c is, for example, a screen that displays out an image by projection light projected from the image projection means 1d. The projection light projected from the image projection means 1d is projected on the projection surface of the screen, and a projection image is formed. The image display means 1c is a transmission type screen that displays out a mirror image of the projection image as seen from the back surface side, on the back surface of the screen surface.
Herein, the projection light output (or projected) from the image projection means 1d is an image formed on the projection surface by being projected on the projection surface of the image display means 1c. The projection image may vary depending on the shape of the projection surface of the image display means 1c, the projection light of the image projection means 1d and the positional relationship (distance, direction, etc.) between the two means.
As shown in
As shown in
As shown in
The light of the formed-image 5 formed on the surface of the refraction means 1a on the opposite side to the viewing point 3 side passes through the inside of the refraction means 1a, refracts as it exits from the refraction means 1a, and reaches the viewpoint 3. A part of the formed-image 5 corresponding to the direction of the viewpoint 3 (partial formed-image) is enlarged by the refraction means 1a.
The image projection means 1d is connected to the control device 50 and is controlled by the control device 50. The image projection means 1d outputs (or projects) the projection light directed toward the refraction means 1 from the opposite side to the viewpoint 3 with respect to the refraction means 1a The projection image is formed on the projection surface of the image display means 1c by the projection light output from the image projection means 1d. The light of the projection image passes through the image display means 1c, and the image is displayed out on the back side of the projection surface. The formed-image is formed on the surface of the refraction means 1a by the light of the image displayed out.
The control device 50 generates image data of the projection image formed on the projection surface of the image display means 1c by the projection light output from the image projection means 1d. The control device 50 controls the image projection means 1d so as to output the projection light such that the projection image is formed on the projection surface of the image display means 1c, from the image projection means 1d.
Moreover, in the case that the projection image of the projection surface of each image display means 1c forms the same or similar formed-image 5 in all the refraction means 1a by the projection light from the image projection means 1d, the same or similar images are displayed on the display device 1, even if viewpoint 3 is changed.
Herein, an example of each of the adjacent refraction means 1a in the refraction means 1a arranged on a convex-shaped curved surface includes the other refraction means 1a which is the nearest in each direction centered on the refraction means 1a and the other refraction means 1a which is the second nearest.
(1.2 Configuration and Functions of Refraction Means)
Next, the configuration and functions of the refraction means 1a will be described in detail.
The refraction means 1a is a lens made of a material which retracts and transmits light such as glass, plastic, etc.
Since the color of the refraction means 1a is only required to transmit light, it is not limited to being transparent but may be colored glass, etc.
At least a part of the refraction means 1a has a circular-shaped cross section. The solid three-dimensional shape of the refraction means 1a is a sphere-shape, a column, an ellipsoid, a cone-shape, etc. For example, an example of the refraction means 1a includes a ball lens, a round column lens, etc. Furthermore, the solid three-dimensional shape of the refraction means 1a may be a shape in which a column bulges like a barrel, a shape in which a column is constricted like a Japanese drum Tsudzumi, or a shape in which a vertex side of a cone-shape is cut.
Herein, the circular shape as the shape of the cross section of the refraction means 1a is not limited to a perfect circle and may be somewhat distorted. For example, as viewed from the viewpoint 3, the shape of the image displayed by the display device 1 may be deformed or distorted from the perfect circle to the extent that it can be recognized as the image in the case of a perfect circle as the entire display device 1.
Furthermore, as shown in
Incidentally, as shown in
Herein, an example of viewpoint 3 includes human eyes, cameras, eyes of robots, etc. In addition, the distance between the display device 1 and the viewpoint 3 is also various, and may be seen approaching or leaving the display device 1. The viewpoint direction of the viewpoint 3 is also various, and the refraction means 1a may be seen.
(1.3 Configuration and Functions of Arrangement Support Means)
Next, the configuration and functions of the arrangement support means 1b will be described in detail using
The arrangement support means 1b has a material which can define the arrangement by connecting the refraction means 1a such as a ball lens of resin, clay, etc.
Incidentally, the refraction means 1a flexibly coupled with adhesive may be placed on a support base having a convex surface. In this case, the arrangement support means 1b is adhesive and a supporting base. In addition, the arrangement support means 1b may support the refraction means 1a of attaching the image display means 1c by embedding it in about half a plastic material. In the case where the shape of the refraction means 1a is a rod-like shape such as a column, an ellipsoid, or a cone-shape, the arrangement support means 1b may be a support base into which the refraction means 1a is inserted and fixed.
Next, an arrangement example of the refraction means 1a will be described.
The arrangement support means 1b arranges the plurality of refraction means 1a in a convex shape with respect to the viewpoint 3 side. For example, as shown in
As shown in
In addition, as shown in
As shown in
As shown in
In addition, as shown in
In addition, the convex shape (shape s3) may not be a closed shape as shown in
In addition, as shown in
As shown in
In addition, as shown in
In addition, as shown in
In addition, the size of the convex shape in which the refraction means 1a is arranged by the arrangement support means 1b depends on the size of the display device 1. For example, as shown in
In addition, as shown in
In addition, as shown in
Incidentally, that the part to be the center of the formed-image can face in the normal direction of the convex shape may mean that the direction of the formed-image formed on the surface of the refraction means 1a by the image display means 1c is not necessarily perpendicular precisely to the convex shape s7 on the design of the display device 1, and that the direction of the formed-image formed on the surface of the refraction means 1a by the image display means 1c may be deviated from the vertical, to the extent that it can be recognized, in the whole of the display device 1, as an image in the case where the direction of the formed-image formed on the surface of the refraction means 1a by each image display means 1c is accurately vertical.
In addition, as shown in
In addition, the refractive index of the refraction means 1a may be different from each other. For example, the refractive indices of each refraction means 1a may be different from each other to the extent that it can be recognized, in the whole of the display device 1, as an image in the case where the refractive indexes of each refraction means 1a are the same, as viewed from the viewpoint 3.
Incidentally, when each of the refraction means 1a is arranged so that the part to be the center of the image can face in the normal direction of the convex shape, the cross-sectional shape of each refraction means 1a from the viewpoint 3 have the same shape. That is, in particular, in the case that the refraction means 1a is a solid having directionality such as a c round column-shape, an ellipsoid, a cone-shape, etc., each refraction means 1a is arranged such that the directions of each refraction means 1a are substantially aligned. Incidentally, it is sufficient if the formed-image 5 can be recognized in the entire display device 1 by viewing each formed-image 5 from the viewpoint 3, although it is not necessary that the cross-sectional shapes of each refraction means 1a are exactly the same.
In addition, the convex shape in which the refraction means 1a is arranged by the arrangement support means 1b may be a shape formed by joining a spherical surface shape and a cylindrical surface shape. For example, the entire shape, of the display device 1 may be a shape in which the cylindrical surface is sandwiched by two hemispherical surfaces. As described above, the three-dimensional arrangement of each refraction means 1a may be a combination of a spherical surface, a semi-spherical surface, a cylindrical surface, an ellipsoidal surface, etc.
Incidentally, the entire shape of the display device 1 may be a combination of a plurality of convex shapes. In this case, the joint portion between the convex shape and the convex shape may not necessarily have a convex shape. For example, convex shapes may be formed in four directions like four leaves.
In addition, regarding the arrangement of the refraction means 1a, the spherical shape may be similar to a spherical surface, as long as it may be convex shape. Regarding the arrangement of the reflection means 1a as well, the cylindrical surface shape may be similar to the cylindrical surface, such as a shape in which a cylindrical surface bulges like a barrel, a shape in which a cylindrical surface is constricted like a Japanese drum Tsudzumi, or a shape in which a vertex side of a cone-shape is cut.
(1.4 Configuration and Functions of Image Display Means)
Next, the configuration and functions of the image display means 1c will be described in detail using
The image display means 1c has, for example, a function of a transmission type screen. The image display means 1c is set in by applying a process or a surface treatment of making the surface opposite to the viewpoint 3 side of the refraction means 1a translucent, sticking a translucent sheet (for example, a film of matte polyester, etc.) on the surface opposite to the viewpoint 3 side of the refraction means 1a, or apply translucent paint. The surface on the opposite side of the refraction means 1a is surface-treated with grinding sand, chemicals or the like, and then by the occurrence of fine irregularities it become like a ground glass or a cloudy glass.
For example, as shown in
The image display means 1c may be a translucent screen such as vinyl or acrylic resin, glass or the like.
The image display means 1c may have a function of displaying out an image on the back surface of the projection surface on which the projection light is projected, there is little reflection of light on the projection surface on which the projection light is projected, and the image display means 1c may emit the scattering light from the back surface thereof. The image displayed out on the image display means 1c is magnified by the refraction means as and can be seen from the viewpoint 3 side.
As shown in
The line connecting the center part of the hemispherical image display means is and the central part of the ball lens 10 is a vertical direction with respect to the convex shaped surface of the arrangement support means 1b. In addition, in case of round column lens, the line connecting the center line of the round column lens and the center line of the hemispherical image display means 1c is a vertical direction with respect to the convex shaped surface of the arrangement support means 1b.
As shown in
In addition, the center part of the formed-image is not necessarily the center of the image “E” itself. After the ball lenses 10 are fixed to the ball lenses 10 by the arrangement support means 1b the center part of the image is the position where the normal line of the convex surface formed by the arrangement support means 1b passes through the center part of the ball lens 10 and intersects with the surface of the ball lens 10 on the opposite side to the viewing point 3 side.
As shown in
As shown in
As shown in
As shown in
As shown in
(1.5 Configuration and Functions of Control Device and image Projection Means)
Next, the configuration and functions of the control device 50 and the image projection means 1d will be described in detail using
The control device 50 has the function of a computer. The control device 50 includes an output unit 51, a storage unit 52, a communication unit 53, an input unit 54, an input/output interface unit 55, and a control unit 56. The control unit 56 and the input/output interface unit 55 are connected electrically via a system bus 57.
The output unit 51 outputs control data of projection light or image data to the image projection unit 1d.
The storage unit 52 is composed of, for example, a hard disk drive, a solid state drive, etc. The storage unit 52 stores the original image of the display image to be displayed on the display device 1. The storage unit 52 stores the original image of the display image to be displayed on the display device 1. The original image may be one image (in the case of the same display image in the viewpoint direction) or an image for each viewpoint direction (in the case of the display image corresponding to the viewpoint direction). The original image may be a movie whose image changes according to time.
In addition, the storage unit 52 stores various programs such as an operating system, and various files. Incidentally, the original image and the various programs may be available from, for example, another server device over the network, or may be recorded in a recording medium and read via a drive device.
The communication unit 53 controls the state of communications with an external device. The control device 50 may be connected to a network such as the Internet wirelessly or by wire via the communication unit 53.
The input unit 54 is, for example, a connector for receiving a signal, etc.
The input/output interface unit 55 conducts interface processing between the output unit 51 and the memory unit 52 etc., and the control unit 56.
The control unit 56 has, for example a CPU (Central Processing Unit) 56a, a ROM (Read Only Memory) 56b, and a RAM (Random Access Memory) 56c. When the CPU 56a reads and executes various programs stored in the ROM 56b or the memory unit 52, the control unit 56 generates image data of a projection picture, or transmits control data or image data of projection light that forms the projection picture on the projection surface of the image display means 1c to the image projection means 1d.
The control device 50 may be connected from the outside of the display device 1 or may be installed inside the display device 1. The control device 50 may be a personal computer, a smartphone, a tablet terminal, etc., and may be connected to the image projection means 1d such as a projector and transmit the control data of projection light and the image data to be projected.
The image projection means 1d is, for example, a projector which projects an image on a projection surface. For example, the projector is a CRT (Cathode Ray Tube) projector, a liquid crystal projector, a DMD (Digital Mirror Device) projector, a LCOS (Liquid Crystal On Silicon) projector, a GLV (Grating Light Valve), or the like. The image projection means 1d may be a liquid crystal display or an organic FL (Electro Luminescence) display, etc. These displays may be curved, flat, or flexible, The image projection means 1d may project the image on the projection surface by scanning the laser light.
The projector which is one example of the image projection means 1d. has a light source lamp, a transmission type or reflection. type picture unit, a projection lens, an interface, etc. The interface of the projector is connected to the output unit 53 of the control device 50. The projector acquires image data from the control device 50 via the interface.
The control device 50 may control ON/OFF' of the power supply of the image projection unit 1d, the projection direction, etc. Moreover, the control device 50 generates a projection image by calculating the projection lens of the image projection means 1d, the angle of projection light projected from the image projection means 1d to the image display means 1c, the shape of the image display means 1c, the surface shape of the refraction means, etc. The control device 50 may generate the image data of the projection image so that a formed-image designed to display the display image on the display device 1 is formed on the surface of the refraction means, and may control the projection light of the image projection means 1d so that the projection image is formed on the projection surface of the image display means 1c. The function of controlling the projection light of the image projection means 1d may be provided in the image projection means 1d so that the projection image is formed on the projection surface of the image display means 1c.
As shown in
Herein, the same or similar images in the respective refraction means 1a may be somewhat different; it is sufficient if the image of the display device 1 can be recognized in the entire partial image of the respective refraction means 1a as viewed from the viewpoint 3.
[2. Operation of Display Device]
Next, the operation of the display device will be described using the drawings.
(2.1 Light Path in Refraction Means)
First, the light path of the refraction means will be described using
Herein, as shown in
In the light path (width 2r) of the refraction means 1a having the radius r in section, the parallel light path is refracted by the refraction means 1a, reaches the circular arc portion (length a) of the refraction means is on the opposite side to the viewpoint 3 side, and comes out outside the refraction means 1a. Incidentally, since the cross-sectional shape of the refraction means 1a is circular shape, even if the visual direction of the viewpoint 3 is shifted, the same light path is obtained.
On the other hand, as shown in
However, as shown in
Incidentally, since the arc of the length a is expanded to the width 2r, the enlargement ratio of the refraction means 1a can be set to approximately 2r/a.
(2.2 Appearance of Image from Viewpoint)
Next, appearances of the image from each viewpoint will be described using
As shown in
It is assumed that partial image 5a of dagger, partial image 5b of diamond, and partial image 5c of spade are lined up in each refraction means 10a, 10b, 10c, 10d, which is a partial image of a formed-image arranged in the order of dagger, diamond, and spade which are symbols. In this example, it is assumed that the part to be the center of the formed-image is the diamond partial image 5b. Incidentally, the formed-image arranged in the order of dagger, diamond, and spade is formed by being displayed out on the projection surface of the image display means 1c by projection light projected from the image projection means 1d.
The partial image 5b of the diamond which is the center part of the formed-image is on the line connecting the center c of the refraction means and the center C of the arrangement of the refraction means. The line connecting the partial image 5b of the diamond which is the center part of the formed-image and the center c of the refraction means is the normal direction of the circle-shape s10 (an example of a convex shape) having the radius R of the center C. That is, the direction of the partial image 5b of the diamond, which is the center part of the formed image, is the normal direction of the circle-shape s10 (1b).
When viewing the display device 1 from the viewpoint 3a, the partial image 5a of the dagger is seen centrally in the refraction means 10a, the partial image 5b of the diamond is seen centrally in the refraction means 10b, and a partial image 5c of the spade is seen centrally in the refraction means 10c.
Due to the enlarging function of each refraction means 10a, 10b, 10c, the partial image 5a of the dagger looks like an enlarged partial image 6a from the viewpoint 3a in the refraction means 10a, the partial image 5b of the diamond looks like an enlarged partial image 6b in the refraction means 10b, and the partial image 5c of the spade looks like an enlarged partial image 6c in the refraction means 10c.
Therefore, by combining the partial image 6a of the refracting means 10a, the partial image Ga of the refraction means 10b and the partial image 6c of the refraction means 10c, the synthetic image can be displayed on the display device 1, which is an enlarged synthetic image and is a synthetic image arranged in the order of dagger, diamond, and spade which are symbols.
On the other hand, when viewing the display device 1 from the viewpoint 3b, the partial image 5a of the dagger is seen centrally in the refraction means 10b, the partial image 5b of the diamond is seen centrally in the refraction means 10c, and a partial image 5c of the spade is seen centrally in the refraction means 10d.
Due to the enlarging function of each refraction means 10b, 10c, 10d, the partial image 5a of the dagger looks like an enlarged partial image 7a from the viewpoint 3b in the refraction means 10b, the partial image 5b of the diamond looks like an enlarged partial image 6b in the refraction means 10c, and the partial image 5c of the spade looks like an enlarged partial image 7c in the refraction means 10d.
Therefore, by combining the enlarged partial image 7a of the refracting means 10b, the enlarged partial image 6b of the refraction means 10c and the enlarged partial image 7c of the refraction means 10d, the synthetic image can be displayed on the display device 1, which is an enlarged synthetic image and is a synthetic image arranged in the order of dagger, diamond, and spade which are symbols.
As described above, the synthetic image can be seen from both the viewpoint 3a and the viewpoint 3b in the same way, which is a synthetic image synthesized from the enlarged partial images of the respective refraction means and arranged in the order of dagger, diamond, and spade which are symbols.
As shown in
Moreover, in the example of
As described above, according to the display device 1 of the present embodiment, the projection light outputted from the image projection means 1d falls on the projection surface of the image display means 1c and a projection image is formed. By the projection image, an image is displayed out on the back surface of the projection surface of the image display means 1c. The displayed-out image can be seen through each refraction means 1a from the viewpoint 3 side. Accordingly, due to change the projection image by controlling the projection light of the image projection means 1d, it is possible to easily change the display image to be displayed on the display device 1.
It is not necessary to re-stick or reprint an image for each refraction means in the prior art, it is difficult to display a moving image because the degree of freedom of changing the image to be displayed is low, but according to the display device 1 according to the present embodiment, it is possible to display a moving image.
By temporally changing the projection light projected onto the projection surface of the image display means 1c from the image projection means 1d and projecting a moving image on the projection surface of the image display means 1c, is it possible to easily display the moving image on the display device 1. Moreover, since the projection light is projected from the image projection means 1d. onto the projection surface of the image display means 1c to display the moving image, it is not necessary to provide the wiring for each refraction means 1a, so that the wiring becomes simple.
When viewing the display device 1 with both eyes, since the refraction means 1a is arranged in a convex shape with respect to the viewpoint 3 side, the synthetic image appears to be exit in the display device 1 due to parallax. When projection light of a moving image is projected, it appears that the moving image is displayed inside the display device 1 if viewed with both eyes.
In the case where the image display means 1c is provided on the surface of the refraction means 1a on the opposite side, since the screen is provided on the surface of the refracting means, there is no need to provide another image display means 1c, the number of parts is reduced, and the cost can be reduced.
In the case where a projection image is projected onto the projection surface of the image display means 1c by projection light projected from a plurality of directions to form a formed-image on the refraction means 1a, the dead angle of projection can be reduced.
In the case of further including image projection means such as a projector, since it is not necessary to install a display such as a liquid crystal display or an organic EL display on each refraction means, the wiring becomes simple.
Since the arrangement support means 1b supports each. refraction means 1a so that the center part of the formed-image faces in the normal direction of the convex shape, in the case where the same formed-image is formed in each refraction means 1a, the display device 1 can display the same image even if the viewing angle is changed. Moreover, the display device 1 can display various images according to the formed-image of each refraction means 1a.
In the case where the convex shape has a circular-shaped cross section, the distortion of the synthetic image displayed by the display device 1 is reduced. Moreover, even when the user changes the viewing angle, it is possible to see the image with less distortion.
By the way, since each lens of the lenticular lens is a single convex structure having a flat surface, when the viewing angle exceeds a predetermined value, reflection of light from the inside of the lens occurs (internal reflection) on the flat surface of the lens, so there was a problem that a sufficient viewing angle could not be secured. Furthermore, in Patent Literature 1, in order to reduce the influence of external light from the surroundings, a light shielding means such as a slit formed in a lattice pattern on a black thin plate is provided. For this reason, there is a problem that the image becomes dark due to the light shielding means, and that there is a problem that images cannot be displayed or the image is hard to see and visibility deteriorates especially outside the center part of the cylindrical shape.
However, according to the display device 1 in the case where the refraction means 1a has a circular-shaped cross section, since the refraction means 1a has a circular cross section, it is possible to prevent deterioration of visibility due to reflection of external light from the surroundings of the display device 1 inside the refraction means 1a (internal reflection), it becomes unnecessary to provide a light shielding means such as a slit for blocking external light, the image displayed by the display device 1 becomes bright, and the visibility is improved.
In this way, by improving the visibility when the refraction means as has a circular-shape cross section, it is possible to ensure a wide display range with high visibility for the display device 1 and the practicality of the display device 1 can be enhanced.
In addition, since the viewing angle of each refraction means 1a is expanded, it is possible to display a large image on the entire display surface of the display device 1 as seen from the viewpoint 3 side. On the other hand, with a lens having a single convex structure, since the viewing angle of each refraction means is narrow due to internal reflection, it is impossible to display a large image displayed out on the entire display surface of the display device as seen from the viewpoint 3 side.
In addition, in the case that the shape of the refraction. means 1a is spherical or round column-form, it is possible to substantially eliminate internal reflection of the reflection means 1a against external light from the surroundings of the display device 1. In this case, the viewing angle of each refraction means 1a increases.
In the case where the shape of the refraction means 1a is spherical like the ball lens 10, the degree of freedom of arrangement is improved such that the spherical refraction means 1a is arranged on a spherical surface or on the surface of an ellipsoid, etc.
In the case that the shape of the refraction means 1a is a spherical shape such as the ball lens 10 and the arrangement support means 1b arranges each refraction means 1a in a spherical shape, the display device 1 can display a similar image for the movement of the viewpoint 3 from the stereoscopic direction as well as the planar movement of viewpoint 3. In the case that the shape of the refraction means 1a is a spherical shape such as the ball lens 10 and the arrangement support means 1b arranges the refraction means as in a cylindrical shape, it is possible to install the display device 1 on a building pillar, etc.
In the case that the shape of the refraction means 1a is round column-form like a round column lens and the arrangement support means 1b arranges each refraction means 1a in a cylindrical surface shape, it is possible to install the display device 1 on a building pillar, etc.
Next, a specific example corresponding to the above-described embodiment will be described using the drawings.
An example in the case where the refraction means 1a is the ball lens 10 will be described using
As shown in
Incidentally, although not shown in
In addition, a hole for embedding each ball lens 10 is empty on the surface of the plastic having a spherical surface shape, and each ball lens 10 is embedded halfway.
As shown in
Incidentally, in both eyes, the image “E” appears to be existed inside the display device 1A.
As shown in
When the image projection means 1d projects projection light forming different projection images on the projection surface of the imago display means 1c by the control device 50, different images are displayed on the display device 1A. The display device 1A can easily display various images in addition to image “E”.
Incidentally, the shape of the display device may be a hemispherical surface, etc.
Moreover, as shown in
The display device 1B may have a half cylindrical shape or a part of its shape instead of a perfect cylindrical shape.
Next, an example in which a round column lens is arranged in a cylindrical surface shape will be described with reference to
As shown in
As shown in
As shown in
Herein, the arrangement support means 1b arranges the respective refraction means 1a so that the sectional shapes of the respective refraction means 1a from the viewpoint become the same shape.
Incidentally, the display device 1C may have a half cylindrical shape or a part of its shape instead of a perfect cylindrical shape.
As shown in
As shown in
The image projection means 1d may not be provided inside the display device 1D. As shown in
The projecting light may be projected from a plurality of directions by the reflection means, and the image may be projected on the projection surface of the image display means 1c. Alternatively, a part of the projection light from the image display means 1c may be reflected by the reflection means (which may be plural) and projected on another projection surface of the image display means 1c from another angle.
The projection light projected from the image projection means 1d is reflected by the reflection means 1e and then projected on the image display means is to form the formed-image on the surface of opposite side to the viewpoint of the round column lens 11. Incidentally, the control device 50 generates the projection image in consideration of the shape of the reflecting surface of the reflection means 1e so that the formed-image in each refraction means can be formed.
Since the image projection means 1d may not be installed inside the display device 1D, the display device 1D can be reduced in size. Since the image projection means 1d may not be installed inside the display device 1D, it may not be the compact image projection means 1d. Moreover, since the image projection means 1d may not be provided from the beginning, the display device 1D can install the image projection means 1d in a later attachment, making it easy to replace.
In the case that the reflection means 1e for reflecting the projection light outputted from the image projection means 1d and projecting the reflected projection light onto the projection surface of the image display means 1c is further provided, apart from optical systems such as refractive means and image display means, since the projection system such as the image projection means etc. can be attached to the display device 1 later, these systems can be separately maintained. In addition, it is not necessary to install the image projection means such as a projector inside the display device 1 (inside the arrangement support means 1b), so that the display device 1 can be downsized. When projecting the projection light from one image display means 1c onto the reflection means 1e and projecting it from the reflection means 1e onto the respective refraction means 1a in each direction, like the projection by the plurality of image display means 1c, it is not necessary to consider the adjustment of the seam between projection images, and it is easy to generate the formed-image of the refraction means 1a.
As shown in
Incidentally, the image display means 1c may be a reflection type screen instead of a transmission type screen. In this case, the small image projection means 1C is installed between the image display means is and the refraction means 1a. Moreover, a transmission type screen and a reflection type screen may be combined.
Projection light such that a projection image is formed directly on the refraction means 1a may be projected from the image projection means 1d or the reflection means 1e, instead of providing the image display means 1c on the entire surface of the surface of opposite side to the viewpoint of the refraction means 1a.
In addition, the present invention is not limited to the above embodiments. The above embodiments are merely examples. Any other embodiment that has essentially the same configuration and produces a similar effect as the technical ideas described in the claims of the present invention falls within the scope of the invention.
Number | Date | Country | Kind |
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2016-170038 | Aug 2016 | JP | national |
Filing Document | Filing Date | Country | Kind |
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PCT/JP2017/029917 | 8/22/2017 | WO | 00 |