JP2578709B2 - Polarizing screen and projection device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polarizing screen which is used in a projection device such as a projection type television provided with a liquid crystal display to provide an easy-to-view image, and a polarizing screen and light from an illumination light source. The present invention relates to a projection device that combines a polarizing member that gives polarized light to the projector, projection equipment that houses the projection device, and a polarizing fiber for the polarizing screen or the polarizing member.

[0002]

2. Description of the Related Art Projection televisions capable of enlarging images on a large screen are:
In recent years, the demand has been expanding. This projection type television has disadvantages that the screen is low in definition and difficult to see because the image of the projector is originally enlarged. Moreover, when used in a bright room, external light is reflected by the screen, making it more difficult to see.

Therefore, a first polarizing film is disposed on the front surface (viewer side) of a screen, and a second polarizing film having a polarizing direction orthogonal to the polarizing direction of the polarizing film is provided as an indoor light source. A technique for sharpening an image by disposing the light from a light source for illumination by a polarizing film on the screen side has been proposed (JP-A-62-266980, 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).
LCDs are advantageous for very large screens of 60 inches or more. L
Projection light from a CD is linearly polarized light having a specific polarization direction, while external light is usually unpolarized light. Therefore, a polarizing film that transmits only the projection light having the specific polarization direction is provided on the screen, and external light having a polarization direction different from that of the projection light is absorbed by the screen, thereby suppressing a decrease in image contrast. Also, a technique for sharpening an image in a bright environment has been proposed (Japanese Patent Laid-Open No. 2-267536).
issue).

[0005]

However, the polarizing film in each of the above-mentioned prior arts is usually prepared by coating a stretched film of a polymer such as polyvinyl alcohol with iodine or a benzidine-based, dianisidine-based, trizine-based or stilbene-based film. It is made by adsorbing a dichroic organic dye, and it is not easy to stretch a wide, large-area film in a certain direction when producing a polarizing film for a large screen. If a large area is formed by joining a plurality of small polarizing films, the joined portion impairs image quality.

Japanese Unexamined Patent Publications Nos. 51-149919 and 63-275787 disclose a polarizing member made of a fiber instead of a film, but this polarizing member is used as clothing. It does not suggest application to a projection screen.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a first object of the present invention is to use a polarizing fiber having the same polarization direction as projection light to separate projection light and external light as much as possible. Another object of the present invention is to provide a polarizing screen which can sharpen an image in a relatively bright environment and can easily adjust a viewing angle.

A second object is to use a polarizing member which, in combination with the above-mentioned polarizing screen, gives the illumination light from the illumination light source a polarization direction orthogonal to the polarization direction of the polarization screen, thereby enabling the screen image to be displayed. It is an object of the present invention to provide a projection device capable of further sharpening.

It is a third object of the present invention to provide a projecting device having the above-mentioned projecting device and having a space for accommodating a viewer.

A fourth object is to be suitable for being attached to the above-mentioned polarizing screen, and it is possible to easily manufacture a large planar type, to cope with the curved shape of the polarizing screen, and to use the winding when not in use. An object of the present invention is to provide a polarizing fiber which is easy to remove.

A fifth object is to be suitable for use in the above-mentioned polarizing member, and it is possible to easily manufacture a large planar type, to cope with the curved shape of the polarizing member, and to use a winding member when not in use. An object of the present invention is to provide a polarizing fiber which is easy to remove.

[0012]

According to a first aspect of the present invention, there is provided a polarizing screen for projecting an image by receiving projection light having a first polarization direction. 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 this, and the fiber is stretched in the longitudinal direction corresponding to the second polarization direction.

Here, the "polarization direction" refers to the vibration direction of the electric field of light. Further, “added” includes a state where the polarization-expressing substance is mixed in the fiber and a state where the polarization-expressing substance is adsorbed or adhered to the fiber surface.

The material having an affinity for the above-mentioned polarized light-emitting substance has a low refractive index and a low birefringence, is capable of suppressing surface reflection and improving resolution, has a high gas barrier property, and has a high gas barrier property. For example, ethylene vinyl alcohol is preferable because the reflective 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, a projection apparatus according to a second aspect is provided so as to face the polarizing screen and a light source for illumination in a room in which the polarizing screen is housed, and A polarizing member that imparts a polarizing property to the light that reaches the polarizing screen from the light source for use. The polarizing member absorbs light having a first polarization direction and changes a second polarization direction orthogonal to the first polarization direction. It has polarizing fibers that transmit the light it has.

In order to achieve the third object, a projection facility according to a third aspect of the present invention forms a projection room provided with a projection apparatus according to the second aspect and a space for accommodating a viewer.

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

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

[0019]

According to the structure of the first aspect, the projection light having the first polarization direction from the projector is not attenuated by the polarizing screen, and the outside light impinging on the polarizing screen is the same as that of the second light. All the light components in the second polarization direction orthogonal to the one polarization direction are absorbed by the polarizing fibers, thereby preventing a decrease in contrast due to external light. Therefore, the image is sharpened even in a relatively bright environment. The viewing angle can be appropriately adjusted by making the cross-sectional structure of the polarizing fiber into various shapes such as a circle, an ellipse, and a square.

According to the second aspect of the present invention, the polarizing member gives the illuminating light from the illuminating light source a polarization direction orthogonal to the polarization direction of the polarizing screen. Absorbed by the fibers, the lowering of the contrast of the image is more effectively prevented.

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

According to the constitution of the fourth or fifth aspect, the polarizing fiber has a large planar shape as compared with a conventional film because the general property of the fiber is that it can be easily drawn in the longitudinal direction. Is easily obtained, and it is easy to cope 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. The polarizing fiber 1 is obtained by adding a polarization-expressing substance made of iodine or a dichroic organic dye to a fiber made of a material such as polyvinyl alcohol or ethylene vinyl alcohol, which has an affinity for the substance. Is stretched in the longitudinal direction L, and the iodine cluster and the dichroic organic dye C are oriented in the fiber stretching direction L in the stretched material, thereby exhibiting a polarizing function. As a result, the polarizing fiber 1 transmits light having a polarization direction (electric field vibration surface) D1 orthogonal to the longitudinal direction L, and absorbs light having a polarization direction (electric field vibration surface) D2 parallel to the longitudinal direction L.

An example of a method for producing the polarizing fiber 1 is as follows. First, polyvinyl alcohol (PVA)
And then immersed in a mixed aqueous solution of iodine and an alkali iodide. Then, it is stretched 1.5 to 15 times to obtain the polarizing fiber 1. Alternatively, the polarizing fiber 1 can be obtained by spinning the PVA, stretching it first, and then immersing it in a mixed aqueous solution of iodine and an alkali iodide. In order to prevent iodine from falling off and suppress light reflection on the fiber surface, the polarizing fiber 1
Is immersed in a solution such as triacetyl cellulose to adhere a transparent resin film to the fiber surface.

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

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

It is preferable to use a dichroic organic dye such as a benzidine-based dye because it has excellent moisture resistance and light resistance, has high heat resistance, and can be thermally processed in a later step. . The degree of polarization of the dichroic organic dye is generally lower than the degree of polarization of iodine. However, the degree of polarization required for the polarizing screen is 80 to 95%, This can be achieved sufficiently with organic dyes.

The sectional structure of the polarizing fiber 1 is circular, elliptical,
Various settings such as a square shape can be made. The diameter of the polarizing fiber 1 is determined by the combination of the non-polarizing fiber and the fineness, 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, it is generally preferable to be 10 to several hundred μm.

Since the polarizing fiber 1 can be easily drawn 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
Are alternately wound and fixed with a transparent adhesive, and then removed from the drum 2 to obtain a polarizing sheet in which the polarizing fibers 1 are arranged in a plane. In addition, since it is more flexible than conventional films, it is easy to respond to curved shapes,
Because it is easy to wind up, it can be wound up and stored compactly when not in use.

FIGS. 3 and 4 show an example in which a transmission type polarizing screen is formed using the polarizing fiber 1. FIG. 3 is a space 1 for accommodating a projection device and a viewer 6.
1 is provided. That is, a projector 4 composed 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 the projection light 5 from the projector 4, and is viewed. The person 6 looks at the image from the front of the screen 3. Illumination light 9 and 10 enter the room 11 from the illumination light source 7 and the window 8.

Since the projector 4 is an LCD, the projection light 5 has a specific polarization direction. As shown in FIG. 4, the transmission type polarizing screen 3 is configured such that a front surface of a screen base 12 made of a Fresnel lens, that is, a viewer-side surface is obtained by, for example, a polarizing sheet 13 obtained by the manufacturing method shown in FIG. It is covered with. Polarizing sheet 13 of FIG.
Are arranged such that the first polarization direction D1, which is the transmission direction of each of the polarizing fibers 1, matches the specific polarization direction of the projection light 5. Also, between the polarizing fibers 1 and 1,
A black fiber 14 made of a multifilament is arranged. The polarizing screen 3 has a large planar shape or a slightly curved curved shape. 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 all of the projection light 5 passes 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, 10 from the window 8, except for the component having the first polarization direction D 1,
Is absorbed by Therefore, a decrease in contrast on the screen 3 is prevented by the illuminating lights 9 and 10, and the image becomes clear.

The black fibers 14 are arranged between the polarizing fibers 1.
By absorbing light, mixing of light between the adjacent polarizing fibers is prevented, and also the role of a so-called black stripe is achieved to improve the resolution. Furthermore, since the polarizing fiber 1 is usually a monofilament, it is relatively rigid, whereas the black fiber 14 is a flexible multifilament. This has the advantage of preventing leakage.

The polarizing fiber 1 has a function similar to a cylindrical lens, and widens the viewing angle in the horizontal direction 31 in FIG.
That is, it also plays a role as a lenticular lens. In addition, various shapes, such as an ellipse and a square, can be employ | adopted for the cross-sectional structure of the polarizing fiber 1 according to the required viewing angle.
The black fiber 14 is omitted when the light mixing prevention effect and the black stripe effect are not required or when the polarizing fiber 1 itself is flexible. FIG. 5 shows a polarizing screen 3 formed by omitting the black fiber and using only the polarizing fiber 1.

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

The reflective polarizing screen 3A is shown in FIG.
As shown in FIG. 5, 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 surface on the viewer side, 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 formed by, for example, forming a light reflection layer made of an aluminum vapor-deposited film on a transparent resin.

The same effects as those of the transmissive screen 3 can be obtained by the reflective screen 3A shown in FIGS.

In order to determine the preferred cross-sectional shape of the polarizing fiber 1 used for the reflective polarizing screen 3A, as shown in FIG. A polarizing fiber mat having an elliptical cross section and the ends of adjacent polarizing fibers 1 and 1 overlapping each other was produced, and a light reflecting film 43 made of an aluminum vapor-deposited film was formed on the back surface of the polarizing fiber mat. Then, the ratio b / a of the apparent major axis a to the minor axis b, and the ratio a1 of the apparent major axis a to the length a1 of one unit of fiber.
/ A was changed variously, and the luminance in the visual recognition direction 42 of the angle α with respect to the projection light 41 from the direction orthogonal to the long axis of the ellipse was calculated. The ratio a1 / a between a and a1 is 0.9
FIG. 9 shows a calculation result of the luminance when the luminance is set to 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 /
a <0.70), the luminance 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 the luminance unevenness is conspicuous.
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 is obtained. In FIG. 9, the calculation is performed using the projection light 41 as a plane wave.

FIGS. 10 and 11 show the cross-sectional shapes of the reflective screen 3A based on the above measurement results. 10, a polarizing sheet 13 shown in FIG. 5 is attached to a front surface of a reflector 21 provided on a front surface (upper surface in the drawing) of a screen base 12A, and the polarizing fiber 1 has an elliptical cross section. And the ratio b / a of the major axis a to the minor axis b is set in 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 appropriately selecting the shape of a spinning nozzle. Can also be obtained by

In FIG. 11, the front and rear surfaces 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. I have. This coating 46
Is, for example, after immersing the polarizing sheet 13 in a solution of a transparent resin,
It can be formed by a drying method. If the viscosity of the resin is adjusted appropriately, the formed film 46 will be polarized
While filling the gaps between them, the polarizing sheet 13 has a shape along the surface shape. Therefore, the shape of the cross section of the surface 46a of the coating 46 around each polarizing fiber 1 becomes a shape approximated by an ellipse 47 shown by a broken line. The ratio b / a of the major axis a to the minor axis b is set in the range of 0.70 to 0.95. As the resin for forming the coating 46, a resin having a refractive index close to the refractive index of the polarizing fiber 1 is preferable because the reflection at the interface between the polarizing fiber 1 and the coating 46 is small.

According to the reflective 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 the brightness is small. Become. When the polarizing fiber 1 in FIG. 10 is formed into an elliptical shape by hot pressing or when the coating 46 in 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 by vapor deposition on the rear surface, there is also an advantage that it is possible to prevent a problem that the material of the reflective film wraps around the front surface of the polarizing sheet 13.

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 denotes a structure in which a large number of polarizing fibers 1 and colored fibers 14A made of multifilaments are arranged and bonded to a main surface of a support base 25 made of a transparent resin sheet. Thereby, the incident light is received on a wide surface and a desired polarization direction is given thereto. The colored fiber 14A serves to fill the 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 shown in FIG. 12, as shown in FIG. 13, the polarizing member 23 is suspended from the ceiling 26 in front of the light source 7 for illumination, that is, facing the screen 3 side. Thereby, when the illumination light (incident light) 9 from the illumination light source 7 passes through the polarizing member 23, a desired polarization characteristic is imparted to this. The polarization direction of the illumination light 9 is, for example, orthogonal to the polarization direction of the polarization fiber 1 of the screen 3.
That is, if it is set so as to transmit the light of the second polarization direction D2, all the illumination light 9 polarized to have the second polarization direction D2 is absorbed by the polarizing fibers 1 of the screen 3. Therefore, a decrease in contrast 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 transmission type or a reflection type. Further, as described above, the polarizing fiber 1 constituting the polarizing member 23 is more flexible than the conventional polarizing film, so that the polarizing member 23 can be wound up and stored compactly when not in use.

Further, the ceiling, wall, floor, etc.
And 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 this 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 transmission type polarizing member 23 is connected to the illumination light source 7.
There are various methods of arranging the polarizing member 23 so as to face the illumination light source 7 as shown in FIG. 14, for example. In that case, the polarizing member 2
Reference numeral 3 denotes a large bent semi-cylindrical shape, but as described above, since the polarizing fiber 1 is flexible, a polarizing sheet 13 conforming to this shape can be easily obtained.

FIG. 15 shows that the transmission type polarizing member 23 is
An embodiment in which the light source is attached to a window 8 corresponding to a light source for illumination is 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 a window frame, or may be set as a curtain so as to be freely opened and closed.

FIG. 16 shows a reflection type polarizing member 23A. This polarizing member 23A has the same configuration as that of the transmission type of 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 and the reflective polarizing member 23A is attached to the ceiling 26, the illumination light 9 from the illumination light source 7 is emitted. Upon reflection, the illumination light 9 is given the second polarization direction D2. As a result, since all the reflected light 9A is absorbed by the polarizing fibers 1 of the screen 3, a decrease in contrast on the screen 3 is prevented, and the image is sharpened. In FIG. 17, a screen 28 for preventing the illumination light 9 from the illumination light source 7 from directly reaching the screen 3 is provided near the illumination light source.

The transmission type and reflection type polarizing members 23,
If the illumination light is polarized using the 23A, it is possible to clarify not only the polarizing screens 3 and 3A of the liquid crystal projection television, but also a liquid crystal screen of a word processor and a hologram (stereoscopic image).

[Brief description of the drawings]

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

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

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

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

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

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

FIG. 7 is a perspective view showing a polarizing screen of the reflection type projection device.

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

FIG. 9 is a characteristic diagram showing a result of the 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 film.

FIG. 12 is a perspective view showing a transmission type 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 an illumination light source.

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

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

FIG. 16 is a perspective view showing a reflective polarizing member using the 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 an illumination light source.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Polarizing fiber, 3, 3A ... Polarizing screen, 4 ... Projector, 5 ... Projection light, 6 ... Viewer, 7 ... Lighting light source, 8 ... Window (lighting light source), 9, 10 ... Lighting 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)

(57) [Claims] 1. A screen for projecting an image by receiving projection light having a first polarization direction, wherein a surface of a screen base on a viewer side transmits light in a first polarization direction, and The polarizing fiber is covered with a polarizing fiber that absorbs light in a polarizing direction. The polarizing fiber is obtained by adding a polarization-expressing substance to a fiber made of a material having an affinity with the polarizing fiber, and the fiber is formed of the second polarizing light. A polarizing screen that is stretched in a longitudinal direction that matches the direction. 2. A polarizing screen for projecting an image by receiving projection light having a first polarization direction, and a polarizing screen installed to face an indoor light source in which the polarizing screen is housed. A polarizing member that imparts polarized light to the light reaching the screen, wherein the polarizing screen has a viewer-side surface of a screen base that transmits light having a first polarization direction. The polarizing member absorbs light having a first polarization direction, and is covered with a polarizing fiber that absorbs light having a second polarization direction orthogonal to
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. It transmits light having the other polarization direction, and a polarization-expressing substance is added to a fiber made of a material having an affinity for this,
A projection device in which the fiber is stretched in the longitudinal direction. 3. A projector for emitting projection light having a first polarization direction, a space for accommodating a viewer, a polarizing screen for receiving the projection light and projecting an image, and the polarizing screen containing the polarizing screen. A polarizing member that is installed to face an illumination light source in a space and that imparts polarization to light reaching the polarizing screen from the illumination light source, wherein the polarizing screen is viewed on a screen base. The surface on the user 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. Absorb light with 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. It transmits light having the other polarization direction, and a polarization-expressing substance is added to a fiber made of a material having an affinity for this,
Projection equipment in which the fiber is stretched in the longitudinal direction. 4. A screen for projecting an image by receiving projection light having a first polarization direction, covering a surface on a viewer side, transmitting light in a first polarization direction, and transmitting light in a second polarization direction. A polarizing fiber to be absorbed, wherein a polarization-expressing 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 corresponding to the second polarization direction. A polarizing fiber for a polarizing screen. 5. The polarizing member according to claim 2, 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 to be produced, wherein a polarization-expressing 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 corresponding to the first polarization direction. A polarizing fiber for a polarizing member.