JP2012102496A - Movable building-structure with use of polarizing plate and phase-difference plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide, by adding a movable phase-difference plate to a building structure fitted only with a linear-polarization plate, the building structure which can produce a variable light space where a structure meant for staging a constant space with shielding or transmitting light is enabled to optionally transmit or shield light.SOLUTION: A movable building structure comprises a first polarizing plate 1 having polarization effect, a second linear-polarization plate 3 that analyzes an optical axis of the light incoming from the side of the first linear-polarization plate 1, and a movable phase-difference plate 2 that displaces the phase of the light on the light path created by the first linear-polarization plate 1 and the second linear-polarization plate 3, and switches the light path between the one, on which the light incoming from the side of the first linear-polarizing plate 1 passes the phase-difference plate 2 and is analyzed by the second linear-polarization plate 3, and the other, on which the light incoming from the side of the first linear-polarizing plate 1 is directly analyzed by the second linear-polarization plate 3.

Description

The present invention relates to a building structure in which light polarized by a polarizing plate can be switched between transmission and light shielding by a movable building structure composed of a combination of a retardation plate and a polarizing plate.

Natural light oscillates at all angles with respect to the traveling direction of light, but its vector can be concentrated into longitudinal and transverse waves. The polarizing plate has a function of transmitting light in one direction of light vibration and absorbing the other direction. In recent years, some wire grids are made of a conductive band and are separated by transmission and reflection depending on the orientation of the wire.
It is known that light polarized by these polarizing plates is converted into circularly polarized light, elliptically polarized light, or linearly polarized light twisted at right angles by passing through a retardation plate.

  Depending on the material and thickness of the retardation plate, there is a material that selectively converts light in a limited wavelength range. Among these retardation plates, polycarbonate, polypropylene, cellophane, etc. are inexpensive band select retardation plates. I can say that.

  Conventionally, the polarizing action of such a polarizing plate has been used for light sources and backlights of liquid crystal projectors and liquid crystal monitors, but there are few examples of applying polarized light to buildings. Furthermore, there are examples using polarizing plates as structures (see, for example, Patent Document 1 and Patent Document 2), but there are no buildings or structures that are movable in combination with a phase difference plate.

Japanese Patent No. 4279804 JP2008-261211 JP2008-275976 JP 08-250846 A

    According to a building using a conventional polarizing plate, the optical path is blocked when the optical axes of the two linear polarizing plates are orthogonal, and the optical path is opened when the optical axes of the polarizing plates are aligned in the same direction. It was a building that applied the action of blocking or opening the optical path at a fixed viewing angle, such as a building or a building formed by a combination of linear polarizing plates, or indoor furniture, partitions, partitions, and the like.

  However, the structure of polarizing plates used in conventional buildings is a permanent space for blocking or opening the optical path, so that the direction of the line of sight changes even in a closed space as a person who sees from outside as an object. I was able to enjoy a partitioned space that was visible or invisible depending on the situation, but as an actual joiner, or a person inside the work or living space, I could see the outside world or block the space from the outside world There was a problem that requests for change and switching could not be handled.

  Moreover, it was not satisfactory to selectively capture a certain color from the light in the visible light range and to enjoy the light with the change that raised the document.

  Therefore, using only the linear polarizing plate installed in the conventional building structure, it moves beyond the static building that designs the permanent light transmission and non-transmission functions, and the position of a movable linear polarizing plate. The purpose is to provide a movable building structure that allows the subject to arbitrarily transmit or block light and to produce variable effects by installing a structure combining phase difference plates at various angles and positions. To do.

The present invention is intended to solve the above problems,
A first polarizing plate having a polarizing function;
The phase of light on the optical path formed by the second linearly polarizing plate for analyzing the optical axis of light incident from the first linearly polarizing plate side, the first linearly polarizing plate, and the second linearly polarizing plate. A movable phase difference plate that displaces
A movable building structure comprising:
An optical path through the second linearly polarizing plate for analyzing light incident from the first linearly polarizing plate side with the second linearly polarizing plate through the retardation plate;
A movable building structure comprising: means for directly switching light incident from the first linear polarizing plate side to an optical path for analyzing the light by the second linear polarizing plate.

[2] The present invention provides the movable building structure according to the above [1], further comprising a transparent base material in the shape of a blind blade on which the second linearly polarizing plate and the retardation plate are mounted. The rotation of the front and back surfaces of the transparent substrate changes the arrangement of the second linearly polarizing plate and the retardation plate, and switches the optical path of light incident from the first linearly polarizing plate. Features.

[3] The movable building structure of the present invention is supported by a driving roller on which the second polarizing plate and the first retardation plate are mounted in the movable building structure according to [1] above. A first transparent base material having a scroll curtain shape, and the transparent base material scrolls to change an arrangement of the second polarizing plate and the first retardation plate; The optical path of light incident from the polarizing plate is changed.

[4] In the movable building structure of the present invention, the phase difference plate is a phase difference plate having a wavelength dependency of phase difference displacement, and polarizes only light in a predetermined wavelength band, and The light of the band is transmitted from the second linearly polarizing plate, and the light of the other wavelength band is blocked.

[5] In the movable building structure of the present invention, a drawing is drawn on the first retardation plate, and the retardation plate comprises the first linear polarizing plate and the second linear polarizing plate. It is characterized in that the document drawn on the retardation plate can be projected when it passes through the second linearly polarizing plate on the optical path.

[6] In the movable building structure of the present invention, the first polarizing plate is mounted on one surface of a double window, and the other surface of the double window is divided in half in the lateral direction. The second polarizing plate is bonded to the half surface and the second linear polarizing plate having a polarization axis different from that of the second linear polarizing plate is bonded to the other half surface, and the retardation plate is inside the double window. Then, the phase difference plate moves left and right, so that light incident on the window controls a light transmission region in the double window.

[7] In the movable building structure of the present invention, the double window is a concentric double cylindrical window, the first linear polarizing plate is cylindrical, and the other concentric circumferential surface. Is divided into 1/2, the second linearly polarizing plate bonded on a half circumference, the second linearly polarizing plate having a polarization axis different from that of the second linearly polarizing plate bonded on a half circumference, and further doubled The movable phase difference plate provided between the concentric windows is provided.

[8] In the movable building structure of the present invention, a polygonal double window, one surface of the polygonal window being the first linear polarizing plate, and the other surface Divide the polygonal surface into upper and lower halves, paste the second linear polarizing plate on the half surface, and paste the second linear polarizing plate with a different polarization axis from the second linear polarizing plate on the other half surface Further, the movable phase difference plate is provided on the upper and lower sides installed in a double polygonal window.

In addition to polyvinyl alcohol in which iodine compound molecules are adsorbed and aligned, there are also wire grid films in which aluminum is aligned and deposited, and wire grids in which aluminum is aligned and deposited on glass. The usage varies depending on the wavelength range to be polarized.

Some retardation films cause birefringence with respect to films that have undergone molecular orientation. The plurality of refractive indexes have different light transmission speeds so that light vibrations interfere with each other, and the vibration direction is deviated. There is a λ plate that phase-converts the entire visible light range, but mineral crystals such as mica and quartz deviate polarization with respect to light in a certain wavelength band depending on the thickness of the sliced crystal. Depending on the film, cellophane, norbornene resin, polycarbonate, polypropylene, etc. are stretched during the manufacturing process, and thus have birefringence.

The plastic film having the wavelength dependency described above can shift an arbitrary color from white light (visible light) if the light is controlled by two linear polarizing plates by phase shifting a certain wavelength band of visible light. Can be colored. These colored lights are as natural as the colors we receive from nature and are effective in calming and healing the mind.

As described above, it is possible to produce a model with a design such as coloring and drawing, such as a window or a screen in which a wavelength-dependent retardation plate is combined with a linear polarizing plate.

Movement diagram of linear polarizer and retardation plate Movement of the polarizing plate window and horizontal blind, and a plan view with the polarizing plate and retardation plate mounted Example of corridor blind effect Pattern 1, 2, 3, 4 Multiple retardation plates including multiple linear polarizers and wavelength dependent retardation plates Document drawn on retardation plate, multiple linear polarizers and retardation plate Movement of the polarizing plate window and vertical blind and plan view with the polarizing plate and retardation plate Polarizing window and roll blind Phase difference plate sliding window Cylindrical partition window Rectangular partition window

1 First linear polarizing plate 2 Phase difference plate 3, 3 'Second linear polarizing plate
4 transparent substrate 5 sash frame 6 window 7 retardation plate having wavelength dependency

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows that light entering from A is transmitted only by longitudinal vibration through the first linear polarizing plate 1 and has a λ / 2 phase difference plate with an optical axis forming an angle of 45 ° with the optical axis of the first linear polarizing plate. The phase is converted into lateral vibration by 2 and passes through the second linearly polarizing plate 3 through which only the light of lateral vibration is transmitted (left in FIG. 1). Next, when the variable building structure on which the second linear polarizing plate 3 and the retardation plate 2 are mounted is rotated (right in FIG. 2), the light incident from A passes through the first linear polarizing plate 1 The vibration light is blocked by the second linearly polarizing plate 3 that transmits only the lateral vibration adjacent thereto, and does not reach the retardation plate 2.

  In Fig. 2, the first linear polarizing plate 1 is bonded to the window, the phase difference plate 2 is bonded to one side of the transparent base material 4 of the armor type blind, and the light of the first linear polarizing plate 1 is applied to the back surface. It is a building in which a second linearly polarizing plate 3 having an optical axis perpendicular to the axis is bonded. For example, when the alignment of the polarizers of the blind and the window is the first linear polarizing plate 1, the retardation plate 2, and the second linear polarizing plate 3, the light is twisted by 90 ° by the retardation plate. , The light from both passes through both linear polarizers. Therefore, the window is transparent. Next, when the blades of the blind are rotated 180 degrees, the arrangement of the polarizers of the blind and the window is the first linear polarizing plate 1, the second linear polarizing plate 3, and the λ / 2 phase difference plate 2. The light is blocked by the first and second linearly polarizing plates 1 and 3 and does not pass through the blind.

When the optical axes of the first linear polarizing plate 1 and the second linear polarizing plate 3 of the armor blind are parallel, the λ / 2 phase difference plate 2 is used as the first and second linear polarizing plates 1. , 3, the light is blocked, and when the first and second linearly polarizing plates 1, 3 are adjacent, the light is transmitted.

The structure of the blind in FIG. 3 will be described. Blinds and partitions partitioning the AB space, for example, the window is equipped with a linear polarizing plate 1 that transmits longitudinal vibrations, λ / 2 phase difference plate 2 on the concave surface of the blind transparent base material, and laterally on the convex surface of the blind transparent base material The linearly polarizing plate 3 that transmits vibration is bonded. Further, a screen-like vertical wrapping type λ / 2 phase difference plate is disposed outside.
A linear polarizing plate 3 that transmits transverse vibration light is bonded to the blind and partition windows that partition the BC space, and a λ / 2 phase difference plate 2 is bonded to the concave surface of the transparent base material 4 of the blind. Is bonded with a linearly polarizing plate 1 that transmits only longitudinal vibration.
In the pattern 1 of FIG. 1, the light entering from A to B passes through the first linear polarizing plate 1 only through the longitudinal vibration, becomes a lateral vibration through the λ / 2 phase difference plate 2 on the blind concave surface, and becomes transparent. It passes through the material 4, passes through the linear polarizing plate 3 through which the transverse vibration is transmitted, and then passes through the screen-like λ / 2 phase difference plate 2 to become longitudinal vibration. (Space B) Going further, the longitudinal vibration of the convex surface on the transparent transparent substrate of the blind is converted into the lateral vibration by the λ / 2 phase difference plate 2 that passes through the transmission linear polarizing plate 1 and is bonded to the concave surface of the transparent substrate. Then, the light passes through the linear polarizing plate 3 that transmits the transverse vibration bonded to the partition window. Since light is bi-directional, A, B, and C are transparent.

Next, FIG. 1 pattern 2 shows a state in which the blind blades are rotated 180 degrees. At this time, the longitudinal vibration light entering from A is blocked by the polarizing plate 3 that transmits only the lateral vibration bonded to the convex surface of the transparent substrate of the blind. On the other hand, in the partition between B and C, the light entering from the C direction passes through the linear polarizing plate 3 that transmits the light of the transverse vibration bonded to the partition window, and is applied to the convex surface of the transparent transparent substrate of the blind. It is blocked by the linearly polarizing plate 1 that transmits only the combined longitudinal vibration.

Pattern 3 in FIG. 1 is a state in which the blind blades are folded. This is a partition pattern of a conventional linearly polarizing plate. The optical axes of the linear polarizing plates of the window in room A and the window in room C are perpendicular to each other. The corridor of B can be seen from the rooms of A and C, but the spaces of A and C cannot be seen from each other.
Further, by passing through a screen-like up / down wrapping type λ / 2 phase difference plate 2, A, B, and C are transparent as in FIG.

The pattern 4 in FIG. 1 shows that the longitudinal vibration light entering from A becomes a lateral vibration by passing through the λ / 2 phase difference plate 2, passes through the transparent base material 4, and passes through the linear polarizing plate 3 that transmits only the lateral vibration. The vertical vibration is generated by the blind λ / 2 phase difference plate between B and C, and is bonded to the screen window through the linear polarizing plate 1 that transmits only the vertical vibration on the convex surface of the transparent substrate. It is blocked by the linearly polarizing plate 3 that transmits only the transverse vibration.
In this way, various visible spaces can be created by combining a plurality of partitions with blind transmission and blocking functions.

As shown in FIG. 4, a screen having a linearly polarizing plate 1 that transmits only longitudinal vibration, a linearly polarizing plate 3 that transmits only lateral vibration, a λ / 2 phase difference plate 2, and wavelength dependence. Next, the blind equipped with the retardation plate 7 will be described.
In the left of FIG. 4, the light traveling from A passes through the linear polarizing plate 1 that transmits only the longitudinal vibration light mounted on the window and becomes only the longitudinal vibration light. And it is interrupted | blocked by the linearly-polarizing plate which permeate | transmits only a horizontal vibration.
The right figure in Fig. 2 shows the screen rotated 180 degrees. The light that has passed through the linearly polarizing plate 1 that transmits only the longitudinal vibration of the light incident from A and that has only the longitudinal vibration has the polarization shifted by, for example, blue due to the wavelength-dependent phase difference plate 7. Next, it is assumed that the vibration direction of light is twisted by 90 ° in the entire visible breath by the λ / 2 phase difference plate. Transversely oscillating light transmits colors other than blue, that is, yellow, which is a combination of green and red. In the blind, blue is transmitted when there is no λ / 2 phase difference plate.
By using the wavelength-dependent phase difference plate as the blind phase difference plate of Embodiment 1 equipped with this function, the transmitted light is colored. This can replace the retardation plate 2 in FIGS. 6 and 7 with a retardation plate 7 having wavelength dependency. Further, as shown in FIG. 5, the background of the document can be colored by using a wavelength-dependent phase difference plate for the phase difference plate 2 for drawing a document or the like.
Further, in the case of FIG. 9, when the circumference becomes transparent, the half circumference is colorless and transparent, and the remaining half circumference is colored.
Also in the case of FIG. 10, a wavelength-dependent phase difference plate 7 can be provided instead of the λ / 2 phase difference plate 2. Then, the wavelength-dependent phase difference plate 7 moves, and the upper half and the lower half of the window both perform complementary color contrast.

As shown in FIG. 5, a linear polarizing plate 3 that transmits only lateral vibration and a λ / 2 phase difference plate 2 on which a drawing or the like is drawn are provided on a screen having a linear polarizing plate 1 that transmits light of longitudinal vibration. The installed blind will be described.
The light traveling from A passes through the window and becomes only the light of longitudinal vibration. And it is interrupted | blocked by the linearly-polarizing plate which permeate | transmits only a horizontal vibration. The left figure in Fig. 3 shows the screen rotated 180 degrees. Longitudinal vibration light is transmitted, and by the λ / 2 phase difference plate drawn on a document or the like, the polarization axis is displaced, and the laterally oscillating light that is an image is transmitted through a linear polarizing plate that transmits only the lateral vibration.
The document drawn on the λ / 2 phase difference plate with the backlight on the A side in FIG. 3 can be raised.
Further, it is possible to draw a document on the λ / 2 phase difference plate 2 in the blind (FIGS. 2, 6, and 7) equipped with this function. When the blind becomes transparent, the document drawn on the λ / 2 phase difference plate 2 appears to stand out.
In the case of the closed partition shown in FIGS. 9 and 10, the document appears to appear in the window at the moment when the window becomes transparent due to the movement of the phase difference plate.

Fig. 6 shows the shape of the window with the window hanging from the top like a strip, and the strip blade is rotated by the shaft on the top and switched to the front and back. The same transmission and blocking of light is realized.

FIG. 7 is a diagram in which a roll-shaped screen is installed inside the window. A transparent base material is connected in a belt shape, and a λ / 2 retardation plate and the other half of the belt are bonded to the half of the entire length of the belt. When the linear polarizing plate of the optical axis is adjacent, the light is blocked. Next, the belt is rolled, and the optical path is opened when the linear polarizing plate that transmits only the longitudinal vibration installed in the window, the λ / 2 phase difference plate, and the linear polarizing plate that transmits only the light of the lateral vibration are arranged.

In FIG. 8, for example, a linear polarizing plate that transmits only longitudinal vibration light is installed on one surface of a double glass window, and the other glass is divided into two so that only the lateral vibration light is transmitted to the left half surface. A linear polarizing plate 3 is installed, and a linear polarizing plate 3 ′ that transmits only longitudinal vibration light is installed on the right half surface so that one more λ / 2 phase difference plate 2 slides between the double glasses. It has been installed in.
FIG. 8 shows how the entire window looks when the λ / 2 phase difference plate 2 moves from the left position to the middle and to the right step by step from the top. The hatched area indicates a black area.
When the phase difference plate 2 is on the left side, longitudinal vibration light transmission, λ / 2 phase difference plate, and lateral vibration light transmission are performed. At the same time, the right half surface has an arrangement of longitudinal vibration light transmission and longitudinal vibration light transmission. When the optical path is opened and the retardation plate moves to the right side, the light transmitted through the linear polarizing plate 1 that transmits only the longitudinal vibration light is blocked by the linear polarizing plate 3 that transmits only the lateral vibration light, and the right side of the window The half surface passes through a linearly polarizing plate 1 that transmits only longitudinal vibration light, is displaced by a λ / 2 phase difference plate 2 into lateral vibration light, and is also blocked by a linear polarizing plate window 3 ′ that transmits only longitudinal vibration light. The light path of the entire window is blocked.

FIG. 9 shows the case where the cylindrical double glass window of FIG. 8 is concentric.
A linear polarizing plate 1 that transmits only longitudinal vibration light is provided on the entire surface of a double-glazed window glass, and the inner circumferential glass is divided into two so that only half-vibration light is transmitted on the half circumference. A polarizing plate 3 is provided, and a linear polarizing plate 3 ′ that transmits only longitudinal vibration light is provided on the remaining half circumference, and the λ / 2 phase difference plate 2 slides concentrically between the double glasses over a further half circumference. It is a device that
When the phase difference plate 2 overlaps with the linear polarizing plate 3 that transmits only the lateral vibration light mounted on the inner glass, the longitudinal vibration light transmission, the λ / 2 phase difference plate, and the lateral vibration light transmission are obtained. Since the half surface without the plate has an arrangement of longitudinal vibration light transmission and longitudinal vibration light transmission, an optical path is opened on the entire window surface. When the phase difference plate 2 moves and comes to a position where it overlaps with the linearly polarizing plate 3 'that transmits only the longitudinal vibration mounted on the inner glass, it transmits longitudinal vibration light, λ / 2 phase difference plate, longitudinal vibration light. It is transmitted and light is blocked. At the same time, the remaining half surface transmits longitudinal vibration light and transverse vibration light, and the entire optical path of the cylindrical window is blocked.

FIG. 10 shows an example of the shape of a square columnar partition.
For example, a linear polarizing plate 1 that transmits only longitudinal vibration light is bonded to the outer four surfaces of the double-structured window, and the inner window 4 surface is divided into two in the upper and lower directions, and only the lateral vibration light is applied to the lower half. A linearly polarizing plate 3 to be passed is bonded, and a linearly polarizing plate 3 ′ that passes light of only longitudinal vibration is bonded to the upper half of the inner window 4 surface. A half-height movable window having a height of 1/2 composed of four surfaces is installed in double glass, and a λ / 2 phase difference plate 2 is bonded.
When the phase difference plate 2 is in the lower half position and overlaps with the linearly polarizing plate 3 that transmits only the lateral vibration light mounted on the inner glass, the longitudinal vibration light is incident and λ / 2 position. A phase difference is imparted to the phase difference plate, and it is transmitted through a linearly polarizing plate 3 that is transversely oscillating light and transmits only laterally oscillating light. At the same time, a linearly polarizing plate 1 that transmits only longitudinally oscillating light is transmitted through the upper half surface. Since the arrangement is 3 ', all four windows are open and the optical path is opened. When the retardation plate 2 moves upward and comes to a position where it overlaps with a linear polarizing plate that transmits only longitudinal vibration mounted on the inner glass, longitudinal vibration light transmission 1, λ / 2 retardation plate 2, longitudinal Vibration light is transmitted and light is blocked. At that time, the lower half surface is a linearly polarizing plate 1 that transmits only longitudinal vibration light and a linearly polarizing plate 3 that transmits only lateral vibration light, and the optical path of the quadrangular columnar window is blocked.
This is the one that slides up and down in FIG. 8, and the number of wall surfaces can be increased to any number of three or more. (Triangular, quadrangular, pentagonal ...)

These variable building structures can be used not only for building windows and partition windows, but also for train car windows, car car windows, aircraft windows, and ferris wheel windows. In order to prevent the animals in the space from feeling stress, the transmission surface can be easily increased or decreased by a movable shading depending on the case and occasion. Visible space that needs to be monitored (becomes easy to block prisons, detention cells, and corridors. In addition, it can be used as a showcase to display artworks and jewelry. It also serves as a shield for healing in esthetic salons. It is easy to open and close the space according to the situation, such as creating a space for a coffee shop or partitioning a bank, usually impressing the open space, and partitioning the space for meetings of important projects. It can be used for large-scale spaces such as international exhibition halls, theaters and concert halls, etc.
Colored aquariums using phase difference plates that depend on the wavelength of the color, such as aquariums and a movable building structure with a polygonal vertical drive in an aquarium, are rich in changes and do not bore visitors with their designs.

Claims (8)

A first polarizing plate having a polarizing function;
The phase of light on the optical path formed by the second linearly polarizing plate for analyzing the optical axis of light incident from the first linearly polarizing plate side, the first linearly polarizing plate, and the second linearly polarizing plate. A movable phase difference plate that displaces
A movable building structure comprising:
An optical path through the second linearly polarizing plate for analyzing light incident from the first linearly polarizing plate side with the second linearly polarizing plate through the retardation plate;
A movable building structure comprising a means for switching light incident from the first linearly polarizing plate side directly to an optical path for analyzing the light by the second linearly polarizing plate. 2. The movable building structure according to claim 1, further comprising: a transparent base material in the shape of a blade of a blind on which the second linearly polarizing plate and the retardation plate are mounted. By rotating the back surface, the arrangement of the second linear polarizing plate and the phase difference plate is changed, and the optical path of the light incident from the first linear polarizing plate is switched. Structure. The movable structure for building according to claim 1, comprising a first transparent substrate having a scroll curtain shape supported by a driving roller on which the second polarizing plate and the first retardation plate are mounted. The transparent substrate is scrolled to change the arrangement of the second polarizing plate and the first retardation plate, and the optical path of light incident from the first polarizing plate is switched. Movable building structure. 2. The building structure according to claim 1, wherein the phase difference plate is a phase difference plate having a wavelength dependency of phase difference displacement, and polarizes only light of a predetermined wavelength band, A movable building structure characterized by transmitting light from the second linearly polarizing plate and blocking light in other wavelength bands.   2. The movable building structure according to claim 1, wherein a drawing is drawn on the first retardation plate, and the retardation plate comprises the first linear polarizing plate and the second linear polarizing plate. A movable building structure characterized in that a document drawn on the retardation plate can be projected when passing through the second linearly polarizing plate on the optical path. 2. The movable building structure according to claim 1, wherein the first polarizing plate is mounted on one surface of a double window, and the other surface of the double window is divided in half in the horizontal direction. And the second linear polarizing plate having a polarization axis different from that of the second linear polarizing plate is bonded to the remaining half surface, and the retardation plate is placed inside the double window. A movable building structure characterized in that when the phase difference plate moves left and right, light incident on the window controls a light transmission region in the double window. 7. The movable building structure according to claim 6, wherein the double window is a concentric double cylindrical window, the first linearly polarizing plate is cylindrical, and the other concentric circumferential surface is defined as 1. / 2 divided into a half circumference, the second linear polarizing plate pasted on a half circumference, and a second linear polarizing plate with a different polarization axis from the second linear polarizing plate, and a double concentric window pasted on a half circumference. A movable building structure characterized by comprising the movable retardation plate installed between the two. 7. The movable building structure according to claim 6, wherein the window is a polygonal double window, wherein one surface of the polygonal window is the first linearly polarizing plate, Divide the polygonal surface into upper and lower halves, paste the second linear polarizing plate on the half surface, and paste the second linear polarizing plate with a different polarization axis from the second linear polarizing plate on the other half surface And
Furthermore, the movable building structure characterized in that the movable phase difference plate is provided above and below the device installed inside a double polygonal window.

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