JP2007017664A - Screen, projector system, rear projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector system in which the small size of the whole apparatus is attained, and maintainability of the apparatus is excellent, to provide a rear projector, and to provide a screen used therefor. <P>SOLUTION: The screen 4 is provided with a plurality of screen members. The plurality of screen members at least include: the first screen member 2 which can pass through a part of picture light under no-scattering and can pass through the other part of the picture light while scattering the same; and the second screen member 3 which can reflect a part of the picture light while scattering the same. The projector system 1 is provided with the above screen 4, and is further provided with a plurality of projectors 7 on the side opposite to the visual inspection side of the first screen member 2, wherein the picture light from the first projector 5 among the plurality of projectors is projected on the first screen member 2, and the picture light from the second projector 6 is projected on the second screen member 3 via the first screen member 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a screen, a projector system, and a rear projector, and more particularly to a multi-face screen including a plurality of screen members, a projector system using the same, and a rear projector.

  A screen for displaying image light projected from a projector is known. There are transmissive and reflective screens. The transmissive screen is a projector and an image viewer (hereinafter referred to as a viewer) positioned on the opposite side of the screen, and the reflective screen is positioned on the same side of the projector and viewer. Is. The transmission type screen displays an image by transmitting the projection light projected from the projector and scattering the projection light at that time. Further, the reflection type screen displays an image by reflecting the projection light projected from the projector and scattering the reflected light at that time.

By the way, techniques for projecting images on a plurality of screens called multi-face screens have been proposed (for example, Patent Document 1, Patent Document 2, and Patent Document 3). In these technologies, one or a plurality of projectors project an image on one transmission screen, and the image displayed on one screen is a planar image or a parallax image for stereoscopic viewing. To do. By using this technology, it is possible to experience the realism as if the viewer is actually in the virtual space.
Japanese Patent Laid-Open No. 9-289656 JP-A-9-311383 JP-A-8-227105

  However, according to the technology described in the above-mentioned patent document, it is necessary to install a projector behind each screen, and a plurality of projectors are not concentrated in one place. There is a problem that it is easy and maintenance work is difficult.

  FIG. 10 shows an example of a home rear projector 100. In this example, a retractable sub-folder 102 such as a roll-up type or a fold-down type is provided at a lower part of a housing 104 that incorporates a main screen 101 and a projector 103 that projects an image onto the main screen 101. When such a configuration is considered, a configuration in which the sub-screen projector 105 is disposed in the region indicated by the broken line H in FIG. 10, that is, the region protruding from the main screen 101 is not preferable. This is because the options for the rear projector stand are narrowed, and the design and appearance tend to be inferior. Of course, there is a problem that the rear projector 100 is increased in size.

  The present invention has been made to solve the above-described problems, and provides a projector system and a rear projector that can reduce the size of the entire apparatus and that are excellent in maintainability of the apparatus, and a screen used for these. For the purpose.

In order to achieve the above object, a screen according to the present invention includes a plurality of screen members, and the plurality of screen members can transmit without scattering a part of the projected image light, and the image light can be transmitted. A first screen member that can be transmitted while scattering the other part, and a second screen member that can reflect while scattering a part of the image light transmitted through the first screen member without scattering. It is characterized by including at least.
That is, the greatest feature of the screen of the present invention is that the first screen member has both a function as a transmissive screen for generating an image and a function as a mere transparent member that only transmits light. is there.

  According to the screen of the present invention, since the first screen member that can transmit without scattering a part of the image light and can transmit the other part of the image light is provided, a plurality of projectors are provided. Can be placed behind the first screen member. That is, the projector for the first screen member that transmits the image light while scattering the image light on the first screen member and generates an image can be disposed behind the first screen member. Since the screen member can also transmit a part of the image light without being scattered, the projector for the second screen member can be disposed behind the first screen member. As described above, since a plurality of projectors can be centrally arranged behind the first screen member, the entire system can be reduced in size and maintenance work can be easily performed. In addition, the design and appearance are excellent.

In addition, the screen of the present invention can be used as a means for realizing the first screen member so that it can transmit without scattering a part of the image light and can transmit while scattering another part of the image light. It is possible to adopt a configuration that allows switching between different states in terms of time.
According to this configuration, the state in which the image light is transmitted without being scattered and the state in which the image light is transmitted while being scattered are temporally independent, so that the image light is transmitted to each of the two screen members. Can be surely sorted.

The screen of the present invention is, as one more specific means, a plurality of screens in which the first screen member allows the other part of the image light to be scattered and transmitted, and each of the screens is rotatable. The structure provided with the member can be employed.
According to this configuration, by rotating the plurality of screen members using an arbitrary driving unit, the image light is scattered and transmitted during a period in which the plurality of screen members are in positions where they block the optical path of the image light. It can function as a transmissive screen for generating an image. On the other hand, in a period in which the plurality of screen members are in positions where they do not block the optical path of the image light (in other words, in a period in which the optical path of the image light passes through the gap between the plurality of screen members), the image light is scattered. And the image light can be transmitted to the second screen member.

The screen of the present invention employs a configuration in which the first screen member includes a screen member made of a polymer-dispersed liquid crystal panel capable of switching between a scattering state and a transparent state as another more specific means. can do.
According to this configuration, the polymer-dispersed liquid crystal panel is electrically driven without mechanically moving the screen member as in the above configuration. The image light can be transmitted while being scattered to function as a transmission screen for generating an image. On the other hand, during the period in which the polymer-dispersed liquid crystal is in a transparent state, the image light can be transmitted without being scattered, and the image light can be transmitted to the second screen member.

Alternatively, in the screen of the present invention, as a means for realizing the first screen member, the first screen member can transmit a part that does not scatter a part of the image light and other image light. It is also possible to adopt a configuration having a part that can be transmitted while being partially scattered.
In the above-described configuration, the state in which the image light is transmitted without scattering and the state in which the image light is transmitted while being scattered are temporally switched. It is the structure which has two site | parts of the site | part which can permeate | transmit while scattering. According to this configuration, if the first screen member has this configuration when the screen is manufactured, the first screen member can be given two functions without being driven at the time of use.

As a more specific configuration, a portion that can be transmitted without scattering a part of the image light can be configured by a hole provided in the first screen member.
According to this configuration, it is possible to easily create a site that can be transmitted without scattering and a site that can be transmitted while being scattered only by simple processing.

Alternatively, in the screen of the present invention, as a means for realizing the first screen member, the first screen member can be transmitted without scattering a part of the image light and the other one of the image light. The structure provided with the translucent screen member which can permeate | transmit while scattering a part can be employ | adopted.
This configuration is not a configuration in which the first screen member is divided into two parts, a part that can be transmitted without scattering and a part that can be transmitted while being scattered, but the entire first screen member is not scattered. It has a structure that has both a function that can be transmitted through and a function that can be transmitted while being scattered. In this configuration, it is only necessary to select a translucent screen member made of an appropriate material, and the first screen member can be realized without providing a driving means or processing the translucent screen member. it can.

  The projector system of the present invention includes the screen of the present invention as described above, and a plurality of projectors on the side opposite to the viewing side of the first screen member, and the first projector among the plurality of projectors. Image light is projected onto the first screen member, and image light from a second projector of the plurality of projectors is projected onto the second screen member via the first screen member. It is characterized by that. The “projector system” referred to in this specification means that the projector and the screen are separate and independent and are used in combination.

  According to the projector system of the present invention, since a plurality of projectors including the first projector and the second projector can be centrally arranged behind the first screen member, the entire system can be reduced in size and maintenance work can be achieved. Is also easier to do. In addition, the design and appearance are excellent.

  Further, as the first screen member, it is possible to switch temporally between a state in which a part of the image light can be transmitted without being scattered and a state in which the other part of the image light can be transmitted while being scattered. In the case of using a device, the switching is preferably performed 60 times or more per second. When performing temporal switching, there is a concern about image flickering, but with this configuration, it is difficult for the viewer to feel image flickering.

Alternatively, when the first screen member has a part that can be transmitted without scattering a part of the image light and a part that can be transmitted while scattering another part of the image light, the second The image light from the first projector is projected only on a portion of the first screen member that can be transmitted without being scattered, and the image light from the first projector is scattered by the first screen member. However, it is desirable to project only on the part which can permeate | transmit.
According to this configuration, even when the image light from the second projector is projected onto the second screen member via the first screen member, the image on the second projector side is the first screen. The image on the first projector side and the image on the second projector side are reliably separated without being reflected on the member, and a clear image can be generated on each screen member.

Alternatively, when the first screen member includes a translucent screen member that is transmissive without scattering part of the image light and that is transmissive while scattering other part of the image light, It is desirable that the image light from the second projector is projected toward the second screen member by selecting light having the same color as the image light from the first projector or only in the vicinity thereof.
In this configuration, since the first screen member is not divided into two parts having different functions, it is inevitable that the image on the second projector side is reflected on the first screen member, contrary to the above-described configuration. . Even in such a case, as the image light from the second projector, light having only the same color as the image light from the first projector or a color in the vicinity thereof is selected. Therefore, the first light projected on the first screen member is used. A good image can be generated on each screen member without the image on the projector side being disturbed by the image on the second projector side.

  The rear projector of the present invention includes the above-described screen of the present invention in a casing and a plurality of projectors in the casing, and image light from a first projector among the plurality of projectors is Projected onto a first screen member, and image light from a second projector of the plurality of projectors is projected onto the second screen member via the first screen member. To do. Note that the “rear projector” referred to in the present specification is different from the “projector system” described above, and means that a screen and a plurality of projectors are integrated as one device.

  According to the rear projector of the present invention, since a plurality of projectors including the first projector and the second projector can be centrally arranged behind the first screen member, the entire system can be reduced in size and maintenance work can be achieved. Is also easier to do. In addition, the design and appearance are excellent.

Also in the rear projector of the present invention, as in the projector system of the present invention, the first screen member transmits a state in which a part of the image light can be transmitted without being scattered and the other part of the image light. In the case where it is possible to temporally switch between the state in which light can be transmitted while being scattered, it is preferable that the switching is performed 60 times or more per second.
Alternatively, when the first screen member has a part that can be transmitted without scattering a part of the image light and a part that can be transmitted while scattering another part of the image light, the second The image light from the first projector is projected only on a portion of the first screen member that can be transmitted without being scattered, and the image light from the first projector is scattered by the first screen member. However, it is desirable to project only on the part which can permeate | transmit.
Alternatively, when the first screen member includes a translucent screen member that is transmissive without scattering part of the image light and that is transmissive while scattering other part of the image light, It is desirable that the image light from the second projector is projected toward the second screen member by selecting light having the same color as the image light from the first projector or only in the vicinity thereof.
Operations and effects when these configurations are employed are the same as those of the projector system of the present invention described above.

[First Embodiment]
A first embodiment of the present invention will be described below with reference to FIGS.
1 is a perspective view illustrating a schematic configuration of a projector system according to the present embodiment, FIG. 2 is a front view illustrating a main part of a first screen member, and FIGS. 3A and 3B are operations of the first screen member. It is a side view for demonstrating. In all the drawings below, the scales and dimensional ratios of the members are appropriately changed in order to make each component easy to see.

  As shown in FIG. 1, the projector system 1 of the present embodiment includes a two-sided screen 4 having a first screen member 2 and a second screen member 3, a first projector 5, and a second projector 6. The two projectors 7 are roughly configured. In this example, the first screen member 2 and the second screen member 3 are arranged so as to form a substantially right angle, the first screen member 2 is arranged in the vertical direction, and the second screen member 3 is arranged in the horizontal direction. ing.

  The first projector 5 projects image light onto the first screen member 2, and the second projector 6 projects image light onto the second screen member 3. These two projectors 7 are both installed on the back side of the first screen member 2. An adapter 8 for changing the projection direction of the image light is attached to the image light exit of each projector 5, 6. Due to the action of the adapter 8, the image light from the first projector 5 is emitted in a substantially horizontal direction toward the first screen member 2, and the image light from the second projector 6 is directed to the second screen member 3. And is ejected diagonally downward. Of course, if the image can be projected on the target screen without using an adapter, the projector itself may be tilted or may be reflected once by a mirror like a rear projector. In such a projector system 1, a viewer views an image from the side opposite to the projector 7 with the first screen member 2 interposed therebetween.

  The first screen member 2 includes a plurality of screen members 10 each of which is rotatable. Each screen member 10 is composed of a plate material that transmits image light while being scattered, that is, a plate material constituting a so-called general transmission screen. As shown in FIG. 2, the first screen member 2 is provided with a rotating shaft 12 extending in the horizontal direction with respect to the frame body 11 extending in the vertical direction. As a center, each screen member 10 is configured to rotate in a vertical plane by the operation of the motor 13. Each screen member 10 may be configured to continuously rotate 360 °, or may be standing in the vertical direction and tilted by a predetermined angle from the vertical direction (FIGS. 3A and 3B described later). It may be configured to rotate so as to reciprocate between b)). It is necessary to synchronize the operation of each screen member 10 with an existing synchronous motor, a controller for motor control, or the like.

  In the present embodiment, the first screen member 2 is configured to switch temporally between a state in which image light can be transmitted without being scattered and a state in which image light can be transmitted while being scattered. Also on the projector 7 side, the first projector 5 and the second projector 6 emit image light intermittently alternately. As shown in FIG. 3A, image light from the first projector 5 is emitted toward the first screen member 2 during a period in which each screen member 10 stands in the vertical direction. At this time, the entire first screen member 2 is in a state where it can be transmitted while scattering image light, and an image from the first projector 5 is projected onto the first screen member 2 functioning as a transmission screen. .

  On the other hand, as shown in FIG. 3B, image light from the second projector 6 is emitted during a period in which each screen member 10 is inclined. At this time, the angle of each screen member 10 and the angle of the adapter 8 are set so that the image light from the second projector 6 passes through the gaps between the screen members 10. The image light is transmitted without being scattered by the first screen member 2, and the image from the second projector 6 is projected onto the second screen member 3 that functions as a reflective screen. The projection of the image light onto each screen member 10 is desirably performed at least 60 times. The reason is that it is difficult for the viewer to feel the image flicker.

  According to the projector system 1 of the present embodiment, since the two projectors 7 can be centrally arranged behind the first screen member 2, the entire system can be reduced in size, and maintenance work is facilitated. In addition, the design and appearance are excellent.

  In the present embodiment, the first screen member 2 has a rotating shaft 12 extending in the horizontal direction, and each screen member 10 rotates in a vertical plane around the rotating shaft 12. However, instead of this configuration, the first screen member may have a rotating shaft extending in the vertical direction, and each screen member may rotate in a horizontal plane around the rotating shaft. Further, the angle at which each screen member 10 is inclined in FIG. 3B may be constant between the upper part and the lower part of the first screen member 2, or the first screen member 2 may be changed according to the difference in the image light emission angle. It may be changed at the top and bottom.

  Further, two projectors 7, that is, one projector 5, 6 for each screen member 2, 3 are arranged behind the first screen member 2, but 2 for each screen member 2, 3. More than one projector may be arranged. In this way, tiling for stereoscopic image display and high image quality can be realized. Of course, stereoscopic viewing may be possible with a single projector using a stereoscopic image display method such as a micropole.

[Second Embodiment]
The second embodiment of the present invention will be described below with reference to FIG.
FIG. 4 is a perspective view showing a schematic configuration of the projector system of the present embodiment. The basic configuration of the projector system of this embodiment is the same as that of the first embodiment, and only the configuration of the first screen member is different. Therefore, only the configuration of the first screen member will be described below, and description of common parts will be omitted. In FIG. 4, the same reference numerals are given to the same components as those in FIG.

  In the projector system 21 of the present embodiment, as shown in FIG. 4, the first screen member 22 scatters a part that can be transmitted without scattering a part of the image light and another part of the image light. And has a permeable portion. Specifically, the first screen member 22 is composed of a screen member in which a large number of circular holes 23 are formed. The screen member itself is composed of a plate material that transmits image light while being scattered, that is, a plate material constituting a so-called general transmission screen. The shape of the hole 23 may be a long and narrow slit, or may be, for example, the screen member of the first embodiment fixed in the state shown in FIG. 3B, and can transmit image light from the second projector 6. If it is a shape and a dimension, it will not specifically limit.

  The arrangement of the two projectors 7 is the same as in the first embodiment, and image light from the first projector 5 is emitted toward the first screen member 22. At this time, the image of the first projector 5 is projected onto the first screen member 22 that functions as a transmissive screen. On the other hand, the image light from the second projector 6 passes through the hole 23 of the first screen member 22, and the image light from the second projector 6 is scattered by the first screen member 22. And the image from the second projector 6 is projected onto the second screen member 3.

  In the case of the present embodiment, unlike the first embodiment, the first screen member 22 has a spatially determined portion where image light can be transmitted without scattering and a portion where image light can be transmitted while being scattered. The images from 5 and 6 are preferably determined in consideration of the shape and arrangement of the holes 23. For example, in the first screen member 22, a portion excluding the hole 23 is a display area, so that the image light from the first projector 5 forms an image in the portion excluding the hole 23. It is desirable that the light transmitted through the portion constitutes an image that does not interfere with the image on the second screen member 3. On the other hand, the image light from the second projector 6 is configured to have an image that is transmitted through the hole 23, and the light other than the hole 23 generates an image that does not interfere with the image on the first screen member 22. It is desirable to configure.

  In this embodiment, the same effect as that of the first embodiment can be obtained in that the entire system can be reduced in size and the maintenance work is facilitated. Further, unlike the first embodiment, it is not necessary to provide a screen driving means, and it is possible to transmit light while being scattered with a non-scattering transmissive portion only by a simple process of forming a hole 23 in a general transmissive screen. Can be easily created separately.

[Third Embodiment]
The third embodiment of the present invention will be described below with reference to FIG.
FIG. 5 is a perspective view showing a schematic configuration of the projector system of the present embodiment. The basic configuration of the projector system of this embodiment is the same as that of the first embodiment, and only the configuration of the first screen member is different. Therefore, only the configuration of the first screen member will be described below, and description of common parts will be omitted. In FIG. 5, the same reference numerals are given to the same components as those in FIG. 1.

  In the projector system 31 of the present embodiment, as shown in FIG. 5, the first screen member 32 is composed of a polymer dispersed liquid crystal panel that can switch between a scattering state and a transparent state. Specifically, a polymer dispersed liquid crystal 35 is sandwiched between two transparent substrates 33 and 34, and a solid transparent electrode (see FIG. (Not shown) is formed. Therefore, the polymer dispersed liquid crystal 35 is switched between the scattering state and the transparent state by alternately switching the voltage application state and the non-application state in terms of time.

  The arrangement of the two projectors 7 is the same as in the first embodiment, and the same is true in that the first projector 5 and the second projector 6 emit image light intermittently alternately. Image light from the first projector 5 is emitted toward the first screen member 32 during a period in which the first screen member 32 is in a scattering state. At this time, the entire first screen member 32 is allowed to transmit while scattering image light, and the image of the first projector 5 is projected onto the first screen member 32 functioning as a transmissive screen.

  On the other hand, the image light from the second projector 6 is emitted during the period when the first screen member 32 is in the transparent state. At this time, the image light from the second projector 6 is transmitted without being scattered by the first screen member 32, and the image of the second projector 6 is projected onto the second screen member 3 functioning as a reflective screen. Is done. It is desirable that the image light is projected onto each of the screen members 32 and 3 at least 60 times. The reason is that it is difficult for the viewer to feel the image flicker.

  In this embodiment, the same effect as that of the first embodiment can be obtained in that the entire system can be reduced in size and the maintenance work is facilitated. Further, since there is no need to provide a means for moving the screen as in the first embodiment, a system with less noise, vibration, etc. can be configured.

[Fourth Embodiment]
Hereinafter, a fourth embodiment of the present invention will be described with reference to FIGS.
FIG. 6 is a perspective view showing a schematic configuration of the projector system of the present embodiment. The basic configuration of the projector system of this embodiment is the same as that of the first embodiment, but the configuration of the first screen member is different. In the first to third embodiments, it is assumed that the image from the second projector is not reflected on the first screen member. However, in this embodiment, the image from the second projector is the first image. It is the structure assumed to be reflected on the screen member. 7 to 9 are diagrams for explaining the operation at that time. In FIG. 6, the same reference numerals are given to the same components as those in FIG. 1.

  In the projector system 41 of the present embodiment, as shown in FIG. 6, the first screen member 42 can transmit a part of image light without scattering, and can transmit half of the image light while being scattered. It is comprised from the transparent screen member. That is, the configuration of the present embodiment is not a configuration in which the first screen member as in the above-described embodiment is divided into two parts, a part that can be transmitted without scattering and a part that can be transmitted while being scattered. The entire screen member 42 is configured to uniformly have a function that allows transmission without scattering and a function that allows transmission while scattering.

  In the case where the image on the second projector 6 side is not reflected on the first screen member as in the first to third embodiments, the image on the first projector 5 side and the second projector 6 side These images are reliably separated, and a clear image can be generated for each screen member. On the other hand, in the case of the present embodiment, since the first screen member 42 is not divided into two parts having different functions, the image on the second projector 6 side is the first screen, contrary to the above-described configuration. Reflection on the member 42 is inevitable. Therefore, the first projector 5 projects image light onto the front first screen member 42, while the second projector 6 emits light of the same color as the image light of 5 from the first projector or only light in the vicinity thereof. It selectively projects toward the second screen member 3.

  FIG. 7 is a flowchart illustrating a method for generating an image to be displayed on each screen member from an original image. In the present embodiment, the image displayed on the first screen member 42 is the main image, and the image displayed on the second screen member 3 is considered to be auxiliary, and the first screen member 42 is used as the main screen. The second screen member 3 may be called a sub screen. First, it is checked whether the color of an arbitrary coordinate on the second screen member 3 is the same as the color of the coordinate when passing through the first screen member 42 (step S10).

  The correspondence relationship between the coordinates of each screen member, which coordinate corresponds to the arbitrary coordinate of the second screen member 3 (sub-screen) when passing through the first screen member 42 (main screen), is shown in FIG. The control unit of the projector system 41 holds such a correspondence table. This correspondence may be obtained in advance with a projection transformation algorithm or the like as a clue, or may be actually measured. The unit of coordinates is preferably the pixel position. Then, the color of the coordinates on the second screen member 3 and the color of the coordinates when passing through the first screen member 42 are compared, and the same color (for example, blue and blue) or a nearby color (for example, blue and cyan). In this case, the “matching state” column in FIG.

  In the present embodiment, there is only one sub-screen. However, when there are two or more sub-screens, as shown in FIG. 9, the image light to several sub-screens passes through the main screen coordinates. To record. The initial value of the number of times of display in FIG. 9 is “1”, and the number of times of display is increased by “1” every time it is determined that the number of times of passage is one. Otherwise, the display count is not changed. Such processing is performed for each coordinate.

  Next, an image to be projected on the first screen member 42 (main screen) and the second screen member 3 (subscreen) is generated (step S20). Whether or not each pixel of the image displayed on the sub-screen can be displayed while checking the matching state of FIG. 8 is examined. The case where it can be displayed is a case where it is “valid”, and the brightness of the color is reduced according to the number of times of passing through the main screen (number of times of display) based on FIG. On the other hand, when display is not possible (in the case of “invalid”), the pixel color is set to white or a color equivalent to the main screen. Such processing is performed for all pixels. There are also pixels that change the color of the main screen. This is the case where the number of display times is 2 or more in FIG. At that pixel position, the brightness of the color is reduced according to the number of display times. In this way, an image to be projected on the main screen and the sub screen is generated. In the case of this configuration, it is best to project a simple pattern such as an artistic geometric pattern.

  In this embodiment, the same effect as that of the first embodiment can be obtained in that the entire system can be reduced in size and the maintenance work is facilitated. Moreover, it is only necessary to select a translucent screen member made of an appropriate material, and the first screen member 42 can be realized without providing a driving means or processing the translucent screen member. Further, since the light of the same color as the image light from the first projector 5 or only the color near the image light from the second projector 6 is selected, the first light projected onto the first screen member 42 is selected. A good image can be generated on each of the screen members 42 and 3 without the image on the first projector 5 side being disturbed by the image on the second projector 6 side.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the projector and the screen are separate and independent, and an example of a “projector system” used in combination is given. However, the screen and a plurality of projectors are housed in a housing and are used as one device. It is also possible to apply the present invention to an integrated “rear projector”. Furthermore, in the above embodiment, an example of a two-sided screen has been described. However, three or more screens may be provided, and a plurality of screens may be installed in the vertical direction and the horizontal direction (in the case of two sides). In addition, it may be installed in the front and side directions of the viewer.

It is a schematic block diagram of the projector system of 1st Embodiment of this invention. It is a front view of the principal part of the 1st screen member. It is a figure for demonstrating operation | movement of a 1st screen member similarly. It is a schematic block diagram of the projector system of 2nd Embodiment of this invention. It is a schematic block diagram of the projector system of 3rd Embodiment of this invention. It is a schematic block diagram of the projector system of 4th Embodiment of this invention. 4 is a flowchart illustrating a method for generating an image to be displayed on each screen member from an original image in the embodiment. In the embodiment, it is an example of a correspondence table of coordinates between first and second screen members. It is an example of the correspondence table | surface of the frequency | count of passage of the image light to the sub screen of a main screen coordinate. It is a schematic block diagram of the conventional projector system.

Explanation of symbols

1, 2, 31, 32 ... projector system, 2, 22, 32, 42 ... first screen member, 3 ... second screen member, 4 ... screen, 5 ... first projector, 6 ... second projector 10: Screen member, 23: Hole.

Claims (15)

  A first screen comprising a plurality of screen members, wherein the plurality of screen members can be transmitted without scattering a part of the projected image light and can be transmitted while scattering another part of the image light. A screen comprising: a member; and at least a second screen member capable of reflecting while scattering a part of the image light transmitted through the first screen member without scattering.   The first screen member can be switched temporally between a state in which the first screen member can transmit without scattering a part of the image light and a state in which the other part of the image light can be transmitted while being scattered. The screen according to claim 1.   The first screen member includes a plurality of screen members that allow the other part of the image light to pass through while being scattered, and each of which is rotatable. screen.   3. The screen according to claim 2, wherein the first screen member includes a screen member formed of a polymer dispersed liquid crystal panel capable of switching between a scattering state and a transparent state.   The first screen member has a part that can be transmitted without scattering a part of the image light and a part that can be transmitted while scattering another part of the image light. The screen according to claim 1.   6. The screen according to claim 5, wherein the part that can transmit the image light without being scattered is a hole provided in the first screen member.   The first screen member includes a translucent screen member that can be transmitted without scattering a part of the image light and can be transmitted while scattering another part of the image light. The screen according to claim 1. A screen according to any one of claims 1 to 7 is provided, and a plurality of projectors are provided on the side opposite to the viewing side of the first screen member,
Image light from a first projector of the plurality of projectors is projected onto the first screen member, and image light from a second projector of the plurality of projectors is projected to the first screen member. Projecting to the second screen member via a projector.   The first screen member is capable of temporally switching between a state that allows transmission without scattering part of the image light and a state that allows transmission while scattering another part of the image light, The projector system according to claim 8, wherein the switching is performed 60 times or more per second. The first screen member has a part that can be transmitted without scattering a part of the image light and a part that can be transmitted while scattering another part of the image light,
The image light from the second projector is projected only on the part of the first screen member that can be transmitted without being scattered, and the image light from the first projector is projected on the first screen member. The projector system according to claim 8, wherein the projector system is projected only on the part that can be transmitted while being scattered. The first screen member includes a translucent screen member that is transmissive without scattering part of the image light and transmissive while scattering other part of the image light,
The image light from the second projector is projected toward the second screen member by selecting light of the same color as the image light from the first projector or only in the vicinity thereof. The projector system according to claim 8. A screen according to any one of claims 1 to 7 is provided in a housing, and a plurality of projectors are provided in the housing.
Image light from a first projector of the plurality of projectors is projected onto the first screen member, and image light from a second projector of the plurality of projectors is projected to the first screen member. The rear projector is projected onto the second screen member via a projector.   The first screen member is capable of temporally switching between a state that allows transmission without scattering part of the image light and a state that allows transmission while scattering another part of the image light, The rear projector according to claim 12, wherein the switching is performed 60 times or more per second. The first screen member has a part that can be transmitted without scattering a part of the image light and a part that can be transmitted while scattering another part of the image light,
The image light from the second projector is projected only on the part of the first screen member that can be transmitted without being scattered, and the image light from the first projector is projected on the first screen member. The rear projector according to claim 12, wherein the rear projector is projected only on a part that can be transmitted while being scattered. The first screen member includes a translucent screen member that is transmissive without scattering part of the image light and transmissive while scattering other part of the image light,
The image light from the second projector is projected toward the second screen member by selecting light of the same color as the image light from the first projector or only in the vicinity thereof. The rear projector according to claim 12.

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