JP2001305683A - Plural-screen projecting device and adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plural-screen projecting device and an adapter by which plural videos are separately displayed on a large screen by one video projecting means without putting on troublesome glasses or the like. SOLUTION: Mirrors 1-4 are disposed so as to be inclined at the angle of for instance 45 deg. on the surface orthogonal to the emitting direction of projected light of a plural-screen video projecting device 11 to project plural screen videos which are latently separated. The videos projected by the projecting device 11 are reflected twice by the mirrors 1-4, so that a display screen is not inverted. The whole mirrors 1-4 are turned on an axis of a line passing through the center point (the center points of the sides of the mirrors 2 and 3 on a projecting surface side) of the projection surface of the plural-screen video projecting device 11 and in parallel with the emitting direction of the projected light. For instance, in the case that the line connecting the mirrors 1-4 is turned by nearly 90 deg. from a state in a horizontal direction as shown in a figure, display or the like by a vertically long screen whose vertical direction viewing angle is double is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screen projection device and an adapter for displaying a large number of images on one display surface.

[0002]

2. Description of the Related Art In the information age, the demand for displaying more information on a single display device has become extremely high. Used. A display terminal of a computer is a good example. There is also a growing demand for enjoying powerful images on large screens, such as landscape images of panoramic images.

In view of such circumstances, the present inventor has already proposed a "display device in which two pieces of information can be simultaneously viewed in the same size on one display surface" (JP-A-11-24).
9593). For large panorama screens,
In particular, in silver halide photography and the like, enlargement and the like, and in moving images, a method using a projector are often performed.

[0004]

However, in a method such as multi-window, one screen is finely divided, and one area is small and difficult to see, causing fatigue. In addition, the display device disclosed in Japanese Patent Application Laid-Open No. H11-249593 is cumbersome because it is necessary to observe the display surface through, for example, polarized glasses.

[0005] In addition, there is a problem that the method of stretching a silver halide photograph or the like cannot be used as a display device of an information terminal as a matter of course.

The present invention has been made in view of the above points, and has as its object to provide a multi-screen capable of separately displaying a plurality of videos on a large screen without wearing cumbersome glasses or the like by one video projection unit. It is to provide a projection device and an adapter.

[0007]

In order to achieve the above object, a multi-screen projection device according to the present invention comprises a video projection means for projecting a plurality of screen images which are potentially separable, and an image projected from the video projection means. Light guiding means for guiding the displayed image to a desired display position.

[0008] The multi-screen projection device may further include an image separation unit that separates an image projected from the image projection unit, and the light guide unit may include a light guide unit that projects the projection light of the image projection unit. A reflecting mirror disposed at a predetermined angle with respect to a plane perpendicular to the emission direction, and configured to be rotatable about a line parallel to the emission direction of the projection light of the image projection means as a first axis; It is characterized by:

Further, the light guide means is configured to be rotatable about a horizontal line perpendicular to the emission direction of the projection light as a second axis, and the light guide means comprises:
The vertical axis perpendicular to the emission direction of the projection light is rotatable about a third axis.

The image projection means may be configured to project a first display image and a second display image having different polarization directions, and the image separation means may be different from each other. Wherein the light guide means has a function of correcting the focal position of an image at a display position, and the image projection means has Characterized in that it is configured to project an image in synchronization with
Further, the image separation means is characterized in that a separation function is switched in synchronization with time, and the light guide means is controlled in rotation in synchronization with time, and the light guide means, The image separating means is characterized in that it is configured to be removable.

In order to achieve the above object, an adapter according to the present invention is an adapter detachably attached to a projection surface of image projection means for projecting a plurality of potentially separable images. A light guide unit for guiding an image projected from the projection unit to a desired display position, and the adapter includes an image separation unit for separating the image projected from the image projection unit. It is characterized by.

Further, the light guide means has a reflecting mirror disposed at a predetermined angle with respect to a plane perpendicular to the emission direction of the projection light of the image projection means, and the emission direction of the projection light of the image projection means. Characterized in that it is configured to be rotatable about a line parallel to the first axis, and that the light guide means is rotatable about a horizontal line orthogonal to the emission direction of the projection light as a second axis. The light guide means is configured to be rotatable around a vertical line perpendicular to the emission direction of the projection light as a third axis.

The image projection means is configured to project a first display image and a second display image having different polarization directions from each other, and the image separation means is different from each other. Wherein the light guide means has a function of correcting the focal position of an image at a display position, and the image projection means has Characterized in that it is configured to project an image in synchronization with
Further, the image separating means is characterized in that a separating function is switched in synchronization with time, and the light guiding means is controlled in rotation in synchronization with time.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, a configuration conceptual diagram of one of the embodiments of the present invention is shown in FIG. FIGS. 2 to 6 show a first embodiment of the present invention, and FIGS. 7 to 9 show a second embodiment of the present invention.

In the present invention, as shown in FIG. 1, an image separation mechanism (image separation means) 12 and a light guide means are provided in front of a projection surface of a multi-screen image projection apparatus (image projection means) 11 having a display function. 13a to 13n, and the light guide means 13
By rotating and adjusting a to 13n, a plurality of images can be separately displayed at a plurality of display positions without wearing troublesome glasses or the like by one image projection means.

The multi-screen image projection device 11 only needs to have a display function, and a liquid crystal display device (hereinafter, referred to as LCD), a cold cathode tube (hereinafter, referred to as CRT), a DMD, and the like are suitably used. Also, it may be simply a slide film, etc., but the left and right images must be displayed in such a way that the left and right images can be taken out, such as changing the polarization direction for each display area of each image or displaying different images every time. is necessary.

As the image separation mechanism 12, complementary color filters such as orthogonally polarized light, circularly polarized light, and red and blue can be used. By providing, for example, orthogonal polarized light for each predetermined region of the pixel region, it is possible to perform projection with one display panel.

In an LCD, a separation mechanism using a half-wave plate, particularly a panel in which a half-wave plate is provided for each horizontal line on an emission-side polarizing plate is preferable. In the case of a video system different from time to time shown in FIGS. 7 to 9 described later, a video separation unit (synchronous drive mirror system) driven synchronously is used.

The mixed image projected from the multi-screen image projection device 11 is provided at a predetermined position on the front surface of the projection device 11 with a predetermined mechanism so that, for example, in a system using linearly polarized light, it is orthogonal to the linearly polarized light at the preceding stage. A desired display image is obtained by the disposed image separation mechanism 12. This display image can be displayed at a desired display position by the light guides 13a to 13n.

A screen is provided at the display position. The screen only needs to be a uniform surface, and more preferably white. And flat screen, aspect screen,
A dome screen or the like is applicable. If the screen has a polarization maintaining function,
Stereoscopic display by binocular parallax is also possible.

As the light guiding means 13a to 13n, mirrors (reflecting mirrors), lenses and the like are used. The position of the display screen can be adjusted by adjusting the direction position of the mirror. The order of the arrangement positions of the light guide means 13a to 13n and the image separation mechanism 12 may be reversed (separated after passing through the light guide means). However, when linearly polarized light is used as the image separation mechanism, for example, Since the linearly polarized light may be disturbed by the phase difference component, the above-mentioned method is often better.

The mirrors of the light guiding means 13a to 13n may be simple mirrors, but optical elements having functions such as lenses and prisms may be interposed as long as they do not disturb the image separating mechanism. In this way, the focal position on the display surface can be corrected.

In the case of an odd number of reflections of a mirror, the polarization direction is reversed when an image and polarized light are used.

With the above configuration, the user can display a predetermined number of predetermined images at an arbitrary predetermined position as needed.

FIG. 2 shows characteristics specific to the projection apparatus used in the present invention. In the drawing, reference numerals 1 and 2 denote mirrors arranged on the front surface of the projection surface of the multi-screen video projection device 11 at a predetermined angle and substantially parallel to the projection surface, and the mirrors 1 and 2 are constituted by plane mirrors. I have. Since the light is reflected twice by the mirrors 1 and 2, there is no inversion of the image. As shown in the drawing, the image displayed on the display surface A and the image displayed on the display surface B are the same regardless of where the light is emitted from the projection device, and only the display position and the brightness are different.

FIG. 3 shows an image separating means 22 as an image separating mechanism in front of the projection surface of the multi-screen image projecting device 11.
_{In this example, R} and _22L are provided, and light guide means by mirrors 1 to 4 is provided thereafter. The range indicated by x in the drawing is the light from the multi-screen image projection device 11 in a state where the light guide means by the mirror is not provided.

In FIG. 3, for example, it is preferable to arrange the mirrors 2 and 3 orthogonally to each other so that the surface of the mirror is at about 45 degrees with respect to a plane perpendicular to the projection direction of the projection device 11. Mirrors 1 and 4 are arranged to display light from mirrors 2 and 3 respectively on a desired display surface.

With such a configuration, the image separating means 22
First display image separated by the _R, 22 _L, the first display surface by provision of the second display image is the light guide unit (mirror 1-4), second
Displayed on the display surface. By making the mirrors 1 and 4 movable in the figure, the positions of the first display surface and the second display surface can be adjusted respectively. As the image separating units 22 _R and 22 _L , for example, polarization filters orthogonal to each other or color filters having complementary colors are used.

FIGS. 4 to 6 show an example in which the mirrors 1 to 4 of the light guide means of the embodiment described with reference to FIG. In other words, the mirrors 1 to 4 as a whole are arranged with a line passing through the center point of the projection plane of the multi-screen image projection apparatus 11 (the center point of the sides of the mirrors 2 and 3 on the projection plane side) and parallel to the emission direction of the projection light. Is rotated. FIG. 4 shows a situation where the line connecting the mirrors 1 to 4 is rotated by approximately 45 ° from a state in which the line is in the horizontal direction.
Indicates the situation when the rotation is about 90 °.

In FIGS. 4 and 5, for convenience of explanation, both the first image reflected and displayed from the mirror 1 and the second image reflected and displayed from the mirror 4 are both displayed as the same image. . The image is inverted only by the mirrors 1 to 4 in the left and right directions, and not in the vertical direction. Therefore, FIG.
A screen without reversal in the vertical direction is displayed as shown in FIG.

As a result, as shown in FIG. 6, display of a panoramic wide screen in which the horizontal angle of view (the number of pixels) is doubled (FIG. 6A), and display of two places at an arbitrary display position (FIG. 6A)
(B)), display on a vertically long screen where the vertical angle of view is doubled (FIG. 6 (c)) can be performed. For example, the image of the panoramic display in FIG. 6A can be created by displaying the images A and B on the left and right sides in the figure in the area of a predetermined image separation mechanism, respectively.

The mirrors 1 to 4 pass through the center point of the projection surface of the multi-screen image projection device 11 (the center point of the sides of the mirrors 2 and 3 on the projection surface side) and are parallel to the emission direction of the projection light. The mirrors 1 to 4 may be rotated not only by rotating the whole of the mirrors 1 to 4 about the line but also by rotating the mirrors 1 to 4 about a vertical line perpendicular to the emission direction of the projection light of the projection device 11. Alternatively, the mirrors 1 to 4 may be rotated about a horizontal line orthogonal to the projection light emission direction of the projection device 11 as an axis.

Next, FIGS. 7 to 9 show an example of a time-division system according to a second embodiment of the present invention. FIG. 7 shows a display image from the projection device at each time, and FIG. 8 shows a configuration concept of the whole system, showing a mirror driving system for guiding light to a plurality of display positions. In FIG. 8, mirrors 33 and 34, which are rotatable in the same manner as the mirrors 1 to 4, are arranged in parallel at a predetermined angle to the projection plane on the front surface of the multi-screen video projection device 11. I have.

In this example, the image projection device does not need to have a built-in image separation mechanism, but only needs to be able to switch the display image at high speed. The light emitted from such a projection device is guided to a predetermined display position (n-th display surface in the figure) at each time by the mirror system of FIG.

Although not shown in FIG.
The mirror 34 is driven by a motor so as to be displayed at a predetermined display position in synchronization with the video switching signal in FIG. The motor is driven not only in the left and right tilt directions of the mirrors 33 and 34 but also in the vertical tilt angle, so that the display surface position can be freely developed not only in the left and right directions of the front screen but also in the vertical direction. The number of display surfaces (the size of the display surface) can be increased as much as the number of time divisions, but the brightness is sacrificed because it is inversely proportional thereto.

8 in synchronization with the display image of FIG.
The switching of the shutter glasses shown in FIG. 8B and the driving of the mirror system (mirrors 33 and 34) shown in FIG. At this time, the switching of the video, the switching of the shutter glasses, and the driving of the mirror system become a crosstalk image unless they are properly synchronized.

FIG. 9 shows an example in which the second embodiment described above is applied as a projection device capable of displaying a mixed image. Although the mirror system shown in FIG. 8 is applied as an entire configuration, an image projected from the multi-screen video projection device 11 is
It is configured such that odd-numbered images among the first to n-th images are displayed in one region obtained by dividing one display image into a plurality of horizontal bands, and even-numbered images are displayed in the other region. The light emitted from such a projection device is guided to a predetermined display position (the n-th display surface in the figure) every time by the mirror system of FIG. 8 in the same manner as described above.

This makes it possible to display n display images with half the number of divisions of the example shown in FIG. 7, so that the same number of display images can be output by changing the switching speed of the display device. The driving speed of the mirror system is reduced to half.

In the present invention, the image separation mechanism 12 and the light guide means 13a to 13n described in FIG. 1 are configured as adapters, and are detachably attached to the multi-screen image projection device 11. That is, the image separating means 2 shown in FIG.
The 2 _R , 22 _L and the mirrors 1 to 4 are configured as adapters that can be freely attached to and detached from the multi-screen image projection device 11.
Also, the mirrors 33 and 34 in FIG. 8 are configured as adapters that can be freely attached to and detached from the multi-screen image projection device 11.

[0040]

As described above, according to the present invention, a plurality of images can be separately displayed on a large screen without wearing troublesome glasses or the like by one image projection means. Also, it is not necessary to provide the screen with a special function such as polarization maintenance, and the screen can be projected and displayed anywhere, which is very convenient.

Further, since the display position is adjusted by light guide means such as a mirror, the degree of freedom of the arrangement position of the projection means is large, and the display surface can be doubled in any direction. Further, by the configuration of the light guide means, it is possible to extend a predetermined display surface in any direction of up, down, left and right, and adjust connection and the like.

Further, since the system is composed of one projection device and light guiding means, the cost is lower than when two or more projection devices are used, and the position adjustment is not required, which is convenient.

By adjusting the position of the light guide means such as a mirror, projection onto a hand or a ceiling, which was impossible with a conventional projection apparatus, is also possible.

Further, by employing a screen having a polarization maintaining function, a stereoscopic display by binocular parallax is also possible.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a main configuration diagram illustrating characteristics of the projection device according to the embodiment of the present invention.

FIG. 3 is an overall configuration diagram of an embodiment of the present invention.

FIG. 4 shows an embodiment of the present invention, wherein the light guide means is substantially 4
FIG. 5 is an explanatory diagram when the camera is turned by 5 °.

FIG. 5 shows an embodiment of the present invention, wherein the light guide means is substantially 9
FIG. 4 is an explanatory diagram when the camera is turned by 0 °.

FIG. 6 is an explanatory diagram illustrating an embodiment of the present invention and illustrating an example of a display screen.

FIG. 7 is a diagram illustrating a first display example according to another embodiment of the present invention.

FIG. 8 is a configuration diagram of another embodiment of the present invention.

FIG. 9 illustrates another embodiment of the present invention, and is an explanatory diagram of a second display example.

[Explanation of symbols]

1, 2, 3, 4, 33, 34 ... mirror, 11 ... multi-screen image projection device, 12 ... image separation mechanism, 13a to 13n ...
Light guiding means, 22 _R , 22 _L ... image separating means.

Claims (30)

[Claims] 1. An image projection device for projecting images of a plurality of screens which are potentially separable, and a light guiding device for guiding an image projected from the image projection device to a desired display position. Multi-screen projection device. 2. The multi-screen projection apparatus according to claim 1, further comprising an image separation unit that separates an image projected from the image projection unit. 3. The light guide means includes a reflecting mirror disposed at a predetermined angle with respect to a plane orthogonal to a projection light emission direction of the image projection means, and the projection means emits the projection light. The multi-screen projection device according to claim 1, wherein the multi-screen projection device is configured to be rotatable about a line parallel to the direction as a first axis. 4. The light guide means has a reflecting mirror disposed at a predetermined angle with respect to a plane orthogonal to the emission direction of the projection light of the image projection means, and emits the projection light of the image projection means. The multi-screen projection apparatus according to claim 2, wherein the apparatus is configured to be rotatable about a line parallel to the direction as a first axis. 5. The light guide unit according to claim 3, wherein the light guide unit is configured to be rotatable about a horizontal line perpendicular to the emission direction of the projection light as a second axis.
2. The multiple screen projection device according to 1. 6. The light guide unit according to claim 4, wherein the light guide unit is configured to be rotatable about a horizontal line orthogonal to the emission direction of the projection light as a second axis.
2. The multiple screen projection device according to 1. 7. The light guide unit according to claim 3, wherein the light guide unit is configured to be rotatable about a vertical line perpendicular to a direction in which the projection light is emitted as a third axis.
2. The multiple screen projection device according to 1. 8. The light guide unit according to claim 4, wherein the light guide unit is configured to be rotatable about a vertical line orthogonal to the emission direction of the projection light as a third axis.
2. The multiple screen projection device according to 1. 9. The image projection means according to claim 1, wherein said image projection means projects a first display image and a second display image having polarization directions different from each other. The multi-screen projection device according to 4 or 5 or 6 or 7 or 8. 10. The multi-screen projection apparatus according to claim 2, wherein said image separation means has a function of separating light into different polarization directions. 11. The light guide means has a function of correcting a focal position of an image at a display position, wherein the light guide means has a function of correcting a focal position of an image at a display position. The multi-screen projection device according to claim 10. 12. The image projection means according to claim 1, wherein the image projection means projects an image in synchronization with time.
Or the multi-screen projection device according to 9 or 10 or 11. 13. The multi-screen projection apparatus according to claim 2, wherein the separation function of the image separation unit is switched in synchronization with time. . 14. The light guide means is controlled to rotate in synchronization with time, wherein the rotation of the light guide means is controlled in synchronization with time.
4. The multiple screen projection device according to 3. 15. The light guide means is configured to be detachable, wherein the light guide means is detachable. Or the multi-screen projection device according to 14. 16. The image separating means according to claim 2, wherein the image separating means is detachable.
Or 8 or 9 or 10 or 11 or 12 or 13 or 1
16. The multiple screen projection device according to 4 or 15. 17. An adapter detachably mounted on a projection surface of video projection means for projecting a plurality of potentially separable video images, wherein the video projected from the video projection means is displayed at a desired display position. Characterized in that the adapter comprises light guiding means for guiding the light. 18. The adapter according to claim 17, further comprising image separation means for separating an image projected from said image projection means. 19. The light guide means has a reflector arranged at a predetermined angle to a plane orthogonal to the emission direction of the projection light of the image projection means, and emits the projection light of the image projection means. The adapter according to claim 17, wherein the adapter is configured to be rotatable about a line parallel to the direction as a first axis. 20. The light guide means includes a reflecting mirror disposed at a predetermined angle to a plane orthogonal to the emission direction of the projection light of the image projection means, and the projection means emits the projection light of the image projection means. The adapter according to claim 18, wherein the adapter is configured to be rotatable about a line parallel to the direction as a first axis. 21. The light guide unit according to claim 1, wherein the light guide unit is configured to be rotatable about a horizontal line orthogonal to an emission direction of the projection light as a second axis.
10. The adapter according to 9. 22. The light guide unit according to claim 2, wherein the light guide unit is configured to be rotatable about a horizontal line orthogonal to the emission direction of the projection light as a second axis.
The adapter according to 0. 23. The light guide unit according to claim 1, wherein the light guide unit is configured to be rotatable about a vertical line perpendicular to the emission direction of the projection light as a third axis.
10. The adapter according to 9. 24. The light guide unit according to claim 2, wherein the light guide unit is configured to be rotatable about a vertical line orthogonal to the emission direction of the projection light as a third axis.
The adapter according to 0. 25. The image projection means according to claim 17, wherein said image projection means projects a first display image and a second display image having polarization directions different from each other.
Or the adapter according to 18 or 19 or 20 or 21 or 22 or 23 or 24. 26. The adapter according to claim 18, wherein the image separating means has a function of separating light into different polarization directions. 27. The light guide unit according to claim 17, wherein the light guide unit has a function of correcting a focal position of an image at a display position. The adapter according to item 26. 28. The image projection means according to claim 17, wherein said image projection means projects an image in synchronization with time.
Or the adapter according to 23 or 24 or 25 or 26 or 27. 29. The image separation means, wherein a separation function is switched in synchronization with time.
Or the adapter according to 20 or 22 or 24 or 25 or 26 or 27 or 28. 30. The light guide unit according to claim 19, wherein the rotation of the light guide unit is controlled in synchronization with time.
1 or 22 or 23 or 24 or 25 or 26 or 27
Or the adapter according to 28 or 29.