JPH05197025A - Polarizing screen and projector using this screen - Google Patents

Abstract

PURPOSE:To provide the polarizing screen with which bright videos are obtainable in a relatively bright environment and the video device using this screen. CONSTITUTION:The viewer side surface of a screen base 12 of the polarizing screen 3 which receives projecting light 5 having a 1st polarization direction and projects the videos is covered with polarizing fibers which allow the transmission of light having a 1st polarization direction D1 and absorbs the light having a 2nd polarization direction D2. The polarizing screen 3 which does not degrade the contrast of the image by external light is obtd. by using the polarizing fibers 1 which allow the transmission of the projecting light 5 having the specific polarization direction from a projector. The degradation in the contrast of the polarizing screen 3 is additionally effectively prevented when the polarizing members in which many polarizing fibers 1 are arranged is installed to face the window and the 2nd polarization direction D is added to illuminating light 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a projection device such as a projection television equipped with a liquid crystal display to provide a polarizing screen for providing an easy-to-see image, and a light from the polarizing screen and a light source for illumination. The present invention relates to a projection device in which a polarizing member for imparting polarized light is combined, a projection equipment accommodating the projection device, and a polarizing fiber for the polarizing screen or the polarizing member.

[0002]

2. Description of the Related Art Projection-type televisions that can enlarge images
In recent years, the demand has expanded. This projection television has a drawback in that the image on the projector is originally enlarged, so that the screen has a low definition and is difficult to see. Moreover, when used in a bright room, external light reflects off the screen, making it even more invisible.

Therefore, a first polarizing film is arranged on the front surface (viewer side) of the screen, and a second polarizing film having a polarization direction orthogonal to the polarization direction of the above-mentioned polarizing film is arranged in a room illumination light source. A technique has been proposed in which an image is made clear by arranging it and absorbing all the light from the light source for illumination by the polarizing film on the screen side (JP-A-62-266980, JP-A-64-77085, JP-A-64-77085). Kaihei 3-5147).

On the other hand, in recent years, projectors have tended to shift from heavy CRTs to light LCDs (liquid crystal display devices).
An LCD is advantageous for an ultra-large screen of 60 inches or more. L
The projected light from the CD is linearly polarized light having a specific polarization direction, whereas the external light is usually unpolarized light. Therefore, the screen is provided with a polarizing film that transmits only the projection light having the above specific polarization direction, and the screen absorbs external light having a polarization direction different from that of the projection light. , A technique for making an image clear in a bright environment has also been proposed (JP-A-2-267536).
issue).

[0005]

However, the polarizing film in each of the above prior arts is usually a stretched film of a polymer such as polyvinyl alcohol, and is made of iodine, benzidine, dianisidine, trizine, stilbene, or the like. It is produced by adsorbing a dichroic organic dye, and when a polarizing film for a large screen is produced, it is not easy to stretch a wide film having a large area in a certain direction. When a plurality of small polarizing films are joined to increase the area, the joined portion impairs the image quality.

Incidentally, Japanese Patent Laid-Open Nos. 51-149919 and 63-275787 disclose polarizing members made of fibers instead of films, but these polarizing members are used as clothing. However, it does not suggest application to a projection screen.

The present invention has been made in view of the above problems. A first object of the present invention is to separate projection light and external light as much as possible by using a polarizing fiber having the same polarization direction as the projection light. In addition, it is to provide a polarizing screen that can sharpen an image in a relatively bright environment and easily adjust a viewing angle.

A second object is to use a polarizing member in combination with the above-mentioned polarizing screen to give the illumination light from the illuminating light source a polarization direction orthogonal to the polarization direction of the polarizing screen. An object of the present invention is to provide a projection device capable of further sharpening.

A third object of the present invention is to provide a projection facility equipped with the projection device and having a space for accommodating a viewer.

A fourth object is that it is suitable for being attached to the above-mentioned polarizing screen, and a large flat one can be easily manufactured, which corresponds to the curved shape of the polarizing screen and winding when not in use. It is to provide a polarizing fiber that is easy to take.

A fifth object is to be suitable for use in the above-mentioned polarizing member, and a large flat one can be easily manufactured, and it is possible to cope with the curved shape of the polarizing member and to wind it when not in use. It is to provide a polarizing fiber that is easy to take.

[0012]

In order to achieve the first object, a polarizing screen according to a first aspect receives projected light having a first polarization direction and projects an image. The viewer-side surface of the screen base is covered with a polarizing fiber that transmits light in the first polarization direction and absorbs light in the second polarization direction. , Is added to a fiber made of a material having an affinity for the fiber, and the fiber is stretched in the longitudinal direction in conformity with the second polarization direction.

Here, the "polarization direction" means the vibration direction of the electric field of light. The term “added” includes a state in which the polarization-developing substance is mixed in the fiber and a state in which the polarization-developing substance is adsorbed or attached to the fiber surface.

The material having an affinity for the polarized light-producing substance has a low refractive index and a low birefringence, can suppress surface reflection and improve resolution, has a high gas barrier property, and has a high reflection property. Ethylene vinyl alcohol is preferable, for example, because the reflection film and the like are not easily oxidized when formed into a mold and can be easily produced by melt spinning.

In order to achieve the second object, the projection apparatus according to a second aspect of the invention is installed so as to face the polarizing screen and an illumination light source inside a room in which the polarizing screen is housed, and the illumination is provided. And a polarizing member that imparts a polarization property to the light reaching the polarizing screen from the light source for use in the light source, the polarizing member absorbs light having a first polarization direction, and emits a second polarization direction orthogonal thereto. It has a polarizing fiber that transmits the light it has.

In order to achieve the third object, the projection equipment according to a third aspect forms a projection room having a space for accommodating a projection device and a viewer of the second aspect.

In order to achieve the fourth object, the polarizing fiber according to the fourth aspect is attached to the above polarizing screen, transmits light having a first polarization direction, and is orthogonal thereto. It has a structure that absorbs light having a second polarization direction.

In order to achieve the fifth object, the polarizing fiber according to the fifth aspect is used in the above-mentioned polarizing member, absorbs light having the first polarization direction, and is orthogonal thereto. It has a structure for transmitting light having a second polarization direction.

[0019]

According to the first aspect of the invention, the projection light having the first polarization direction from the projector is not attenuated by the polarizing screen, while the outside light falling on the polarizing screen is All the light components in the second polarization direction orthogonal to the one polarization direction are absorbed by the polarization fiber, and the deterioration of contrast due to external light is prevented. Therefore, the image is sharpened even in a relatively bright environment. Further, the viewing angle can be appropriately adjusted by forming the cross-sectional structure of the polarizing fiber into various shapes such as a circle, an ellipse, and a quadrangle.

According to the second aspect of the invention, the polarizing member gives the illumination light from the illumination light source a polarization direction orthogonal to the polarization direction of the polarization screen, so that all the polarized illumination light is polarized by the polarization screen. It is absorbed by the fibers and the deterioration of the contrast of the image is prevented more effectively.

According to the third aspect of the invention, since a space for accommodating a projection apparatus having a projector, a polarizing screen and a polarizing member and a viewer, that is, a polarizing space is formed,
The viewer can enjoy a clear image in this polarized space.

According to the structure of claim 4 or 5, since the polarizing fiber has a general characteristic that the fiber can be easily stretched in the longitudinal direction, it has a larger planar shape than the conventional film. Is easily obtained, and it is also easy to deal with the curved shape of the polarizing screen or the polarizing member by utilizing the flexibility of the polarizing fiber.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a polarizing fiber 1 of the present invention. This polarizing fiber 1 is obtained by adding a polarization-developing substance composed of iodine or a dichroic organic dye to a fiber composed of a material such as polyvinyl alcohol or ethylene vinyl alcohol, which has an affinity for this. Is stretched in the longitudinal direction L, and when the iodine clusters and the dichroic organic dye C are present in the stretched material while being oriented in the fiber stretching direction L, a polarizing function is exhibited. As a result, the polarizing fiber 1 transmits light having a polarization direction (electric field vibration plane) D1 orthogonal to the longitudinal direction L and absorbs light having a polarization direction (electric field vibration plane) D2 parallel to the longitudinal direction L.

An example of the method of manufacturing the polarizing fiber 1 is as follows. First, polyvinyl alcohol (PVA)
Is spun and then immersed in a mixed aqueous solution of iodine and an alkali salt of iodine. Then, it is stretched 1.5 to 15 times to obtain the polarizing fiber 1. Unlike this, the polarizing fiber 1 can be obtained by spinning PVA, then performing the above stretching, and then immersing it in a mixed aqueous solution of iodine and an alkali salt of iodine. In order to prevent iodine from falling off and suppress the reflection of light on the fiber surface, the polarizing fiber 1 is added after the addition of iodine and the stretching are completed.
Is immersed in a solution of triacetyl cellulose or the like to attach a transparent resin film to the fiber surface.

For the polarizing fiber 1, another polymer such as ethylene vinyl alcohol is used in place of polyvinyl alcohol, and a dichroic organic dye such as benzidine is added in place of iodine before or after spinning. It is also possible to fabricate.

Due to the fact that it is a non-aromatic substance,
It has a low refractive index and low birefringence, can suppress surface reflection and improve resolution, has a high gas barrier property, and when used in a reflective screen or the like, a reflective film (for example, Aluminum film) is not easily oxidized,
It is preferable to use ethylene vinyl alcohol as the polymer constituting the polarizing fiber 1 because it can be produced by melt spinning and has high operability.

Further, it is preferable to use a dichroic organic dye such as a benzidine-based dye since it is excellent in moisture resistance and light resistance, has high heat resistance, and can be heat-processed in a subsequent step. .. The degree of polarization of the dichroic organic dye is usually lower than that of iodine, but the degree of polarization required for the polarization screen is 80 to 95%, which is an ordinary dichroism. It can be fully achieved with organic dyes.

The cross-sectional structure of the polarizing fiber 1 is circular, elliptical,
It can be set in various ways such as a rectangle. The diameter of the polarizing fiber 1 depends on the fiber-forming property of the combination with the non-polarizing fiber, the flexibility required for winding the screen when not in use, the resolution of the projected image, the moire based on the periodic arrangement of the liquid crystal pixels and the fiber. Although it is restricted by conditions such as prevention, generally 10 to several hundreds μm is preferable.

Since the polarizing fiber 1 can be easily stretched in the longitudinal direction L, it can be easily manufactured even if it has a large planar shape as compared with a conventional film. For example, as shown in FIG. 2, the polarizing fiber 1 and the black non-polarizing fiber 14 are connected to the drum 2
After being alternately wound around and fixed with a transparent adhesive, the polarizing sheet is obtained by arranging the polarizing fibers 1 in a plane shape by removing from the drum 2. Also, since it is more flexible than conventional films, it is easy to handle curved shapes, and
Since it is easy to wind up, it can be wound up and stored compactly when not in use.

3 and 4 show an example in which a transmissive polarizing screen is formed using the polarizing fiber 1. The projection equipment shown in FIG. 3 is a space 1 for accommodating a projection device and a viewer 6.
1 and. That is, a projector 4 made of an LCD is installed behind the transmissive polarizing screen 3 in the room (space) 11, and an image is projected on the transmissive screen 3 by projection light 5 from this projector 4 The person 6 views the image from the front of the screen 3. Illumination lights 9 and 10 enter the room 11 through the illumination light source 7 and the window 8.

Since the projector 4 is an LCD, its projection light 5 has a specific polarization direction. As shown in FIG. 4, the transmissive polarizing screen 3 has a front surface of a screen base 12 made of a Fresnel lens, that is, a viewer side surface, for example, a polarizing sheet 13 obtained by the manufacturing method shown in FIG. Covered with. Polarizing sheet 13 of FIG.
Are arranged so that the first polarization direction D1 which is the transmission direction of each polarization fiber 1 matches the specific polarization direction of the projection light 5. In addition, between the polarizing fibers 1 and 1,
Black fibers 14 made of multifilaments are arranged. The polarizing screen 3 has a large plane shape or a slightly curved curved surface shape, but as described above, the polarizing sheet 13 conforming to this shape can be easily obtained.

According to the screen 3 shown in FIGS. 3 and 4, since the projection light 5 is entirely transmitted through the screen 3, the brightness of the image is kept high. On the other hand, the illumination light source 7
And the illumination light 9 and 10 from the window 8 except the component having the first polarization direction D1.
Absorbed by Therefore, the illumination lights 9 and 10 prevent the contrast on the screen 3 from being lowered, and the image becomes clear.

The black fiber 14 between the polarizing fibers 1 is
By absorbing the light, it is possible to prevent the light from being mixed between the adjacent polarizing fibers, and also play a role of a so-called black stripe to improve the resolution. Further, since the polarizing fiber 1 is usually a monofilament and is relatively rigid, the black fiber 14 is a flexible multifilament, so that the gap that tends to occur between the polarizing fibers 1 and 1 is filled with light. It has the advantage of preventing leakage.

The polarizing fiber 1 has a function similar to that of a cylindrical lens and widens the viewing angle in the horizontal direction 31 of FIG.
That is, it also serves as a lenticular lens. The cross-sectional structure of the polarizing fiber 1 can adopt various shapes such as an ellipse and a quadrangle depending on the required viewing angle.
Further, the black fiber 14 is omitted when the effect of preventing light mixing and the black stripe effect are not required, or when the polarizing fiber 1 itself is flexible. A polarizing screen 3 formed by omitting the black fiber and using only the polarizing fiber 1 is shown in FIG.

6 and 7 show an example in which a reflection type polarizing screen is formed by using the polarizing fiber 1. In FIG. 6, a projector 4 composed of an LCD is installed in front of the reflection type polarization screen 3A, an image is projected on the reflection type screen 3A by projection light 5 from the projector 4, and a viewer 6 can see the screen. Watch the video from the front of 3A. Room 1
1, the illumination light 9 from the illumination light source 7 and the window 8
Enter 10.

The above-mentioned reflective polarizing screen 3A is shown in FIG.
As shown in, a reflector 21 is attached to the front surface of a base material 20 such as a flexible vinyl chloride sheet to form a screen base 12A, and the front surface of the screen base 12A, that is, the viewer side surface, As in the case of the transmission type shown in FIGS. 3 and 4, it is covered with the polarizing sheet 13. The polarizing sheet 13 is also arranged such that the first polarization direction D1 which is the transmission direction of the polarizing fiber 1 matches the specific polarization direction of the projection light 5. The reflector 21 is, for example, a transparent resin on which a light reflecting layer made of an aluminum vapor deposition film or the like is formed.

The same effects as in the case of the transmissive screen 3 can be obtained by the reflective screen 3A shown in FIGS. 6 and 7.

In order to obtain a preferable shape of the cross section of the polarizing fiber 1 used for the reflection type polarizing screen 3A, as shown in FIG. A polarizing fiber mat having an elliptical cross section and overlapping ends of adjacent polarizing fibers 1 and 1 was produced, and a light reflecting film 43 made of an aluminum vapor deposition film was formed on the back surface of the polarizing fiber mat. Then, the ratio b / a of the apparent major axis a and the minor axis b of the elliptical shape, and the ratio a1 of the apparent major axis a to the length a1 of one unit of fiber.
By varying / a variously, the luminance in the visual direction 42 of the angle α with respect to the projection light 41 from the direction orthogonal to the major axis of the ellipse was calculated. The ratio a1 / a between a and a1 is 0.9
FIG. 9 shows the calculation result of the luminance when the value is 5.

In FIG. 9, the major axis a is set to a constant value (= 10), and the minor axis b is variously changed. As can be seen from this figure, the minor axis b exceeds 9.5 (b / a> 0.95).
And the viewing angle β becomes too small, and the minor axis b is less than 7.0 (b /
When a <0.70), the brightness peak P near the maximum value of the viewing angle α becomes extremely large as compared with the brightness at other viewing angles α, so that uneven brightness is noticeable.
Therefore, the ratio b / a is preferably in the range of 0.70 to 0.95.

On the other hand, the ratio a1 / a is 0.80 to 0.9.
The range of 5 is preferable in that light utilization efficiency is high and a large viewing angle α can be obtained. In FIG. 9, the projection light 41 is calculated as a plane wave.

10 and 11 show the cross-sectional shape of the reflective screen 3A based on the above measurement results. In FIG. 10, the polarizing sheet 13 shown in FIG. 5 is attached to the front surface of the reflector 21 provided on the front surface (upper surface in the figure) of the screen base 12A, and the polarizing fiber 1 has an elliptical cross section. The ratio b / a of the major axis a and the minor axis b is set within the range of 0.70 to 0.95. As described above, such an elliptical polarizing fiber 1 can be obtained by hot pressing a polarizing fiber mat in which polarizing fibers 1 having a circular cross section are arranged, and the spinning nozzle shape can be selected appropriately. Can also be obtained by

In FIG. 11, the front surface and the rear surface of the polarizing sheet 13 made of the polarizing fiber 1 having a circular cross section are covered with a coating 46 made of a transparent resin having a thickness of several microns, for example, an acrylic resin. There is. This film 46
Is, for example, after dipping the polarizing sheet 13 in a transparent resin solution,
It can be formed by a drying method. If the viscosity of the above-mentioned resin is optimized, the formed coating film 46 will form the polarizing fibers 1, 1
While filling the gap between them, the polarizing sheet 13 has a shape along the surface shape of the polarizing sheet 13. Therefore, the shape of the cross section of the surface 46a of the coating film 46 around each polarizing fiber 1 becomes a shape approximated by the elliptical shape 47 indicated by the broken line. The ratio b / a of the major axis a and the minor axis b is set within the range of 0.70 to 0.95. As the resin forming the coating film 46, a resin having a refractive index close to that of the polarizing fiber 1 is preferable because the reflection at the interface between the polarizing fiber 1 and the coating film 46 is small.

According to the reflection type polarizing screen 3A shown in FIGS. 10 and 11, a large viewing angle in the horizontal direction orthogonal to the longitudinal direction of the polarizing fiber 1 can be obtained, and the unevenness of brightness in place is small. Become. Further, when the polarizing fiber 1 of FIG. 10 is formed into an elliptical shape by hot pressing or when the coating film 46 of FIG. 11 is provided, the gap between the polarizing fibers 1 and 1 disappears. ,
When a reflective film (same as the reflective film 43 in FIG. 8) is formed on the rear surface by vapor deposition, there is also an advantage that the problem of the reflective film material wrapping around to the front side of the polarizing sheet 13 can be prevented.

Next, a transmission type polarizing member using the polarizing fiber 1 of FIG. 1 will be described. Polarizing member 2 shown in FIG.
Reference numeral 3 shows a plurality of polarizing fibers 1 and colored fibers 14A made of multifilaments arranged side by side and bonded to the main surface of a support base 25 made of a transparent resin sheet. As a result, the incident light is received by the wide surface and the desired polarization direction is given to it. The colored fiber 14A plays a role of filling a gap between the polarizing fibers 1 and 1, and is colored black (absorbs all visible light) or white (reflects all visible light). The incident light may be incident from either the support base 25 side or the polarizing fiber 1 side.

As an example of the use of the polarizing member 23 in FIG. 12, as shown in FIG. 13, it is hung on the ceiling 26 in front of the illumination light source 7, that is, facing the screen 3 side. Thereby, when the illumination light (incident light) 9 from the illumination light source 7 passes through the polarization member 23, a desired polarization characteristic is given to the illumination light 9. For example, the polarization direction of the illumination light 9 may be orthogonal to the polarization direction of the polarizing fiber 1 of the screen 3,
That is, if the setting is made so that the light of the second polarization direction D2 is transmitted, all the illumination light 9 polarized so as to have the second polarization direction D2 is absorbed by the polarization fiber 1 of the screen 3. Therefore, the contrast reduction on the screen 3 is more effectively prevented, and the image is sharpened. Here, the effect is the same whether the screen 3 is a transmissive type or a reflective type. Further, since the polarizing fiber 1 constituting the polarizing member 23 is more flexible than the conventional polarizing film as described above, the polarizing member 23 can be wound up and stored compactly when not in use.

Further, the ceiling member, the wall, the floor, etc. are provided with the polarizing member 23.
If it is set so as to absorb light in the first polarization direction D1 and transmit light in the second polarization direction D2,
It is also possible to prevent a decrease in contrast due to the disorder of the polarization state of the reflected light at the portion. In that case, the polarizing sheet 13 has a large planar shape, but as described above, such a large planar polarizing sheet 13 can be easily obtained.

The transmissive polarizing member 23 is used as the illumination light source 7
There are various methods of arranging them so as to face each other. For example, as shown in FIG. 14, a semi-cylindrical polarizing member 23 may be arranged so as to cover the periphery of the illumination light source 7. In that case, the polarizing member 2
3 has a semi-cylindrical shape with a large bend, but as described above, since the polarizing fiber 1 is flexible, the polarizing sheet 13 conforming to this shape can be easily obtained.

FIG. 15 shows the transmission type polarizing member 23,
An embodiment in which the window 8 corresponding to a light source for illumination is attached will be shown.
In this case, the illumination light 10 is polarized so as to have the second polarization direction D2 when entering the room through the window 8. The polarizing member 23 may be fixed to the window frame, or may be formed in a curtain shape so as to be openable and closable.

FIG. 16 shows a reflective polarizing member 23A. The polarization member 23A has the same configuration as that of the transmission type shown in FIG. 12, except that the support base 25A is formed of a reflector.

As shown in FIG. 17, for example, when the illumination light source 7 is installed on the floor 27, if the reflection type polarizing member 23A is attached to the ceiling 26, the illumination light 9 from the illumination light source 7 is emitted. When reflected, the illumination light 9 is given a second polarization direction D2. As a result, all the reflected light 9A is absorbed by the polarizing fiber 1 of the screen 3, so that the contrast reduction on the screen 3 is prevented and the image is made clear. In addition, in FIG. 17, a stand 28 is installed near the illumination light source to prevent the illumination light 9 from the illumination light source 7 from directly reaching the screen 3.

The transmission type and reflection type polarization members 23,
By using 23A to polarize the illumination light, in addition to the polarizing screens 3 and 3A of the liquid crystal projection television, the liquid crystal screen of a word processor and the hologram (stereoscopic image) can be sharpened.

[Brief description of drawings]

FIG. 1 is a perspective view showing a polarizing fiber according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a method of making the polarizing fiber of FIG. 1 two-dimensional.

FIG. 3 is a schematic side view showing a transmission type projection apparatus using the same polarizing fiber.

FIG. 4 is a perspective view showing an example of a polarizing screen of the transmission type projection apparatus.

FIG. 5 is a perspective view showing another example of a polarizing screen of the transmission type projection apparatus.

FIG. 6 is a schematic side view showing a reflection type projection device using the same polarizing fiber.

FIG. 7 is a perspective view showing a polarizing screen of the reflective projection apparatus.

FIG. 8 is a cross-sectional view showing a polarizing fiber used for brightness calculation.

FIG. 9 is a characteristic diagram showing a result of the same calculation.

FIG. 10 is a cross-sectional view showing a reflective polarizing screen using elliptical polarizing fibers.

FIG. 11 is a cross-sectional view showing a reflective polarizing screen in which an elliptical cross-section is formed by a resin coating.

FIG. 12 is a perspective view showing a transmissive polarizing member using the same polarizing fiber.

FIG. 13 is a schematic side view showing an example in which the polarizing member of FIG. 12 is arranged so as to face a light source for illumination.

FIG. 14 is a schematic side view showing another example in which the polarizing member is arranged so as to face a light source for illumination.

FIG. 15 is a side view showing an example in which a window is covered with the same polarizing member.

FIG. 16 is a perspective view showing a reflective polarizing member using the same polarizing fiber.

FIG. 17 is a schematic side view showing an example in which the polarizing member of FIG. 16 is arranged so as to face a light source for illumination.

[Explanation of symbols]

1 ... Polarizing fiber, 3, 3A ... Polarizing screen, 4 ... Projector, 5 ... Projection light, 6 ... Viewer, 7 ... Illumination light source, 8 ... Window (illumination light source), 9, 10 ... Illumination light, 11: Indoor, 1
2, 12A ... Screen base, 13 ... Polarizing sheet, 1
4 ... Black fiber, 14A ... Colored fiber, 14B ... Opaque fiber, 23, 23A ... Polarizing member, 25 ... Support base, D1
... first polarization direction, D2 ... second polarization direction.

Claims (5)

[Claims] 1. A screen for receiving a projection light having a first polarization direction and displaying an image, wherein a viewer-side surface of the screen base transmits the light in the first polarization direction and transmits the light in the second polarization direction. The polarizing fiber is covered with a polarizing fiber that absorbs light in the polarization direction. The polarizing fiber is obtained by adding a polarization-developing substance to a fiber made of a material having an affinity for the polarizing fiber. A polarizing screen that is stretched in the longitudinal direction to match the direction. 2. A polarizing screen, which projects an image by receiving projection light having a first polarization direction, and an indoor illumination light source in which the polarizing screen is housed, which is installed so as to face the polarized light from the illumination light source. A projection device comprising: a polarizing member that imparts polarized light to light reaching a screen, wherein the polarizing screen has a viewer-side surface that transmits light having a first polarization direction. Is covered with a polarizing fiber that absorbs light having a second polarization direction orthogonal to the above, and the polarizing member absorbs light having a first polarization direction,
It has a polarizing fiber that transmits light having a second polarization direction orthogonal to this, and the polarizing fiber absorbs light having a polarization direction that matches the longitudinal direction of the fiber and is orthogonal to this. A material that transmits light having the other polarization direction, in which a polarization-developing substance is added to a fiber made of a material having an affinity with this,
A projection device in which the fibers are stretched in the longitudinal direction. 3. A projector which emits projection light having a first polarization direction, a space for accommodating a viewer, a polarization screen which receives the projection light and projects an image, and the above-mentioned housing the polarization screen. A projection equipment, which is installed opposite to a light source for illumination in a space, and which comprises a polarizing member that polarizes light reaching the polarizing screen from the illumination light source, wherein the polarizing screen is a view on a screen base. The surface on the human side is covered with a polarizing fiber that transmits light having a first polarization direction and absorbs light having a second polarization direction orthogonal to the first polarization direction. Absorbs light with a polarization direction of
It has a polarizing fiber that transmits light having a second polarization direction orthogonal to this, and the polarizing fiber absorbs light having a polarization direction that matches the longitudinal direction of the fiber and is orthogonal to this. A material that transmits light having the other polarization direction, in which a polarization-developing substance is added to a fiber made of a material having an affinity with this,
Projection equipment in which the fibers are stretched in the longitudinal direction. 4. A screen of a screen which receives a projection light having a first polarization direction and projects an image, covers a surface of the viewer side, transmits the light of the first polarization direction, and transmits the light of the second polarization direction. A polarizing fiber that absorbs, wherein a polarized light-producing substance is added to a fiber made of a material having an affinity for the polarizing fiber, and the fiber is stretched in a longitudinal direction that matches the second polarization direction. Is a polarizing fiber for polarizing screen. 5. The polarizing member according to claim 2, 3 or 4, which absorbs light having a first polarization direction and transmits light having a second polarization direction orthogonal to the first polarization direction. A polarizing fiber made by adding a polarization-developing substance to a fiber made of a material having an affinity for the polarizing fiber, the fiber being stretched in the longitudinal direction that matches the first polarization direction. A polarizing fiber for a certain polarizing member.