JP2014115558A - Projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector that uses an optical fiber more actively than a conventional projector.
A projector main body 600 having light modulation sections 400R, 400G, and 400B that modulate light according to image information, an optical fiber section 700 that guides light from the light modulation sections 400R, 400G, and 400B, and an optical fiber. Projector 1000, comprising: projection optical system 900 that projects light from unit 700 as a projection image.
[Selection] Figure 1

Description

  The present invention relates to a projector.

2. Description of the Related Art Conventionally, a projector includes a light modulation unit that modulates light according to image information and a projection optical system that projects light from the light modulation unit as a projection image, and the projector is provided between the light modulation unit and the projection optical system. There is known a projector that further includes a bundle of optical fibers whose exit side diameter is larger than the entrance side diameter (see, for example, Patent Document 1).
According to such a projector, it is possible to easily change the magnification of the projected image by inserting and removing a bundle of optical fibers.

JP-A-6-59140

  By the way, an optical fiber has useful properties such as a property that light can be guided with low loss and a property that light can be guided in an arbitrary direction by bending the optical fiber. However, in the technical field of projectors, although there are examples like conventional projectors, other active use of optical fibers has not been carried out much.

  Accordingly, the present invention has been made in view of the above-described problems, and an object thereof is to provide a projector in which an optical fiber is more actively used than a conventional projector.

[1] A projector according to the present invention includes a projector main body having a light modulation unit that modulates light according to image information, an optical fiber unit that guides light from the light modulation unit, and light from the optical fiber unit. And a projection optical system for projecting as a projected image.

  Since the projector of the present invention separates the projector main body and the projection optical system and optically connects them with the optical fiber unit, the orientation and angle of the projection optical system can be changed even with the projector main body fixed. It becomes a projector that uses optical fiber more actively than a conventional projector.

  By the way, in a general projector in which the projector main body and the projection optical system are integrated, it is often not assumed that the projected image is projected directly above or below due to the cooling design of the projector. . However, according to the projector of the present invention, the projection optical system can be directed directly above or directly below without moving the projector main body, and a projected image can be easily projected directly above or directly below. Become.

  Further, according to the projector of the present invention, the room for projecting the projection image and the room for installing the projector body can be separated, and the heat generated by the projector body and the noise of the cooling mechanism can be isolated. .

The “optical fiber part” refers to a component having a bundle of optical fibers.
The number of optical fibers constituting the bundle of optical fibers is preferably equal to or greater than the number of pixels included in the light modulation unit. By adopting such a configuration, it is possible to suppress deterioration of the image quality of the projected image.

[2] In the projector according to the aspect of the invention, the projector further includes a flexible arm unit that connects the projector main body unit and the projection optical system and can freely set the direction and angle of the projection optical system. It is preferable to pass through the inside of the flexible arm portion.

  With such a configuration, it is possible to set the direction and angle of the projection optical system without using a special fixture or the like.

  As the flexible arm portion, for example, a tube having a metal wire for fixing the shape can be used.

[3] In the projector according to the aspect of the invention, it is preferable that the optical fiber unit includes a plurality of optical fiber units, and the projection optical system includes a plurality of projection optical systems corresponding to the plurality of optical fiber units.

  With such a configuration, it is possible to project a projected image as if it were a plurality of projectors even though it is a single projector.

[4] In the projector according to the aspect of the invention, it is preferable that a plurality of projection images projected from the plurality of projection optical systems are combined on a projection target, and one projection image is projected as a whole.

  With such a configuration, it is possible to project a large projection image with only one projector without preparing a plurality of projectors and configuring a projector array.

[5] In the projector according to the aspect of the invention, as the plurality of optical fiber portions, a first optical fiber portion that guides one of two types of polarized light and a first light guide that guides the other polarized light different from the one polarized light. It is preferable to project a projection image that includes two optical fiber units and is stereoscopically viewable.

  With such a configuration, it is possible to project a stereoscopically projected image without reducing the frame rate with a single projector.

[6] In the projector according to the aspect of the invention, it is preferable that the plurality of projection optical systems project projected images onto a plurality of projection targets, respectively.

  With such a configuration, it is possible to project a plurality of projection images separately with one projector.

  A plurality of projected images can be projected not only in the same direction but also in different directions for each projected image (see Embodiment 5 described later).

[7] In the projector according to the aspect of the invention, the projector body includes a plurality of projector bodies, the optical fiber includes a plurality of optical fibers corresponding to the plurality of projector bodies, and the projection optical system It is preferable that one projection optical system is provided, and the plurality of optical fiber units guide light to the one projection optical system.

  With such a configuration, light from a plurality of projector main bodies can be combined and projected from one projection optical system, and an ultra-high-definition projected image can be projected, or both the frame rate and image quality can be projected. It is possible to project a stereoscopically projected image without dropping the image.

[8] In the projector according to the aspect of the invention, it is preferable that the projector main body is for installation on the ground side, and the projection optical system is for installation on the ceiling side.

  With this configuration, only the projection optical system can be installed on the ceiling (so-called ceiling suspension), and the overhead pressure can be greatly reduced compared to when the entire projector is installed on the ceiling. Is possible.

  Further, by adopting the above-described configuration, the projection optical system is lighter than the entire projector, so that it is possible to reduce the influence on the projector when an object installed on the ceiling falls.

  In addition, with the configuration as described above, the projector main body can be left installed on the ground side, and as a result, replacement and maintenance of consumables can be facilitated. It is possible to eliminate the danger associated with the work.

FIG. 3 is a top view showing an optical system of the projector 1000 according to the first embodiment. FIG. 3 is a diagram for explaining an image projection direction of the projector according to the first embodiment. FIG. 9 is a diagram for explaining a projector 1002 according to a second embodiment. FIG. 10 is a top view showing an optical system of a projector 1004 according to a third embodiment. The figure which looked at the photosynthesis part 500 in Embodiment 3 from the optical fiber part 704,706 side. FIG. 10 is a top view showing an optical system of a projector 1006 according to a fourth embodiment. FIG. 10 is a top view showing an optical system of a projector 1008 according to a fifth embodiment. The figure which looked at the photosynthesis part 500 in Embodiment 5 from the optical fiber part 712,714,716,718 side. FIG. 10 is a top view for explaining a projector 1010 according to a sixth embodiment. The figure shown in order to demonstrate the projector 1012 which concerns on the modification 1. As shown in FIG. The figure which looked at the photosynthesis part 500 in the modification 2 from the optical fiber part 724,726 side. The figure which looked at the photosynthesis part 500 in the modification 3 from the optical fiber part 728,730,732,734 side. FIG. 10 is a top view showing an optical system of a projector 1018 according to Modification 4.

  The projector of the present invention will be described below based on the embodiments shown in the drawings. In each embodiment and each drawing, description and illustration of components not directly related to the present invention are omitted.

[Embodiment 1]
FIG. 1 is a top view showing an optical system of a projector 1000 according to the first embodiment.
FIG. 2 is a diagram for explaining the image projection direction of the projector 1000 according to the first embodiment. FIG. 2A is a diagram illustrating a state in which a projected image is projected toward the front side of the projector main body 600 (the side on which the flexible arm 800 protrudes from the projector main body 600), and FIG. FIG. 2C is a diagram illustrating a state in which a projected image is projected toward the back side of the main body 600, and FIG. 2C is a diagram illustrating a state in which the projected image is projected directly above.

  In each drawing, the three directions orthogonal to each other are z-axis direction (direction of the optical axis (illumination optical axis 100ax) of the illumination device 100 in FIG. 1) and x-axis direction (parallel to the paper surface in FIG. 1 and on the z-axis). A vertical direction) and a y-axis direction (a direction perpendicular to the paper surface and perpendicular to the z-axis in FIG. 1).

As shown in FIG. 1, the projector 1000 according to the first embodiment includes a projector main body unit 600, an optical fiber unit 700, a flexible arm unit 800, and a projection optical system 900.
The projector 1000 can project projected images in various directions as shown in FIG. 2 by moving the projection optical system 900. Of course, the projection direction of the projection image shown in FIG. 2 is an example, and by changing the direction and position of the projection optical system 900, the projection image can be projected in virtually any direction.

  In the projector 1000 according to the first embodiment, a description by illustration is omitted, but a room for projecting a projection image and a room for installing the projector main body 600 may be separated.

Hereinafter, each component in the projector 1000 will be described.
The projector main body 600 includes the illumination device 100, the color separation light guide optical system 200, the condenser lenses 300R, 300G, and 300B, the light modulation units 400R, 400G, and 400B, and the light combining unit 500.

The illumination device 100 includes a light source device 10, a light collimating optical system 20, and a lens integrator optical system 110.
The illumination device 100 emits light including red light, green light, and blue light as illumination light (that is, light that can be used as white light) along the illumination optical axis 100ax.

  The light source device 10 emits focused light having the illumination optical axis 100ax as the central axis toward the illuminated area. As the light source device 10, one having various luminous tubes that emit light with high luminance can be used, for example, one having a metal halide lamp, a high-pressure mercury lamp, an ultrahigh-pressure mercury lamp, or the like can be used. Moreover, what has a light emitting diode (LED), a semiconductor laser (LD), organic EL (OLED) etc. can be used as the light source device 10. FIG.

  The light collimating optical system 20 emits light from the light source device 10 as substantially parallel light. The light collimating optical system 20 is composed of, for example, a concave lens. In addition, you may use what consists of a compound lens which combined the some lens as a light collimating optical system.

  The lens integrator optical system 110 is a light uniformizing optical system that includes a first lens array 120, a second lens array 130, a polarization conversion element 140, and a superimposing lens 150. In addition, this invention is not restricted to this, For example, you may use the light homogenization optical system which consists of a rod integrator optical system.

  The first lens array 120 includes a plurality of first small lenses 122 for dividing the light from the light collimating optical system 20 into a plurality of partial light beams. The second lens array 130 has a plurality of second small lenses 132 corresponding to the plurality of first small lenses 122 in the first lens array 120. Since the combination of the first lens array 120 and the second lens array 130 as described above is known as a light uniformizing optical system, detailed description thereof is omitted.

The polarization conversion element 140 is a polarization conversion element that emits each of the partial light beams divided by the first lens array 120 as light (for example, s-polarized light) composed of substantially one type of linearly polarized light having the same polarization direction.
The polarization conversion element 140 transmits one linear polarization component of the polarization components included in the light from the light source device 10 as it is, and reflects the other linear polarization component in a direction perpendicular to the illumination optical axis 100ax. A reflection layer that reflects the other linearly polarized light component reflected by the polarization separating layer in a direction parallel to the illumination optical axis 100ax, and one linearly polarized light component that has passed through the polarized light separating layer is changed to the other linearly polarized light component. And a phase difference plate.

  The superimposing lens 150 is an optical element for superimposing the partial light beams from the polarization conversion element 140 in the vicinity of the image forming regions of the light modulation units 400R, 400G, and 400B. The superimposing lens 150 may be composed of a compound lens in which a plurality of lenses are combined.

The color separation light guide optical system 200 has a function of separating light from the illumination device 100 into red light, green light, and blue light, and light modulation units 400R and 400G that are to be illuminated with red light, green light, and blue light, respectively. , 400B.
The color separation light guide optical system 200 includes dichroic mirrors 210 and 220, reflection mirrors 230, 240 and 250, and relay lenses 260 and 270.

The configurations of the dichroic mirror, the reflection mirror, and the relay lens themselves are well known and will not be described.
The dichroic mirror 210 reflects the red light component and transmits the green light and the blue light component.
The dichroic mirror 220 reflects the green light component and transmits the blue light component.

The red light reflected by the dichroic mirror 210 is further reflected by the reflection mirror 230 and reaches the light modulation unit 400R via the condenser lens 300R.
The green light that has passed through the dichroic mirror 210 together with the blue light is reflected by the dichroic mirror 220 and reaches the light modulator 400G via the condenser lens 300G.
The blue light that has passed through the dichroic mirror 220 reaches the light modulation unit 400B via the relay lens 260, the reflection mirror 240, the relay lens 270, the reflection mirror 250, and the condenser lens 300B. The relay lenses 260 and 270 and the reflection mirrors 240 and 250 have a function of guiding the blue light component that has passed through the dichroic mirror 220.

  The reason why such a relay lens 260, 270 is provided in the optical path of blue light is that the length of the optical path of blue light is longer than the length of the optical path of other color lights, so that light is used due to light divergence or the like. This is to prevent a decrease in efficiency. The projector 1000 according to the first embodiment has such a configuration because the optical path length of blue light is long. For example, the length of the optical path of red light is increased so that the relay lens and the reflection mirror are red. A configuration used in the optical path of light is also conceivable.

  The condensing lenses 300R, 300G, and 300B are provided in the subsequent stage of the color separation light guide optical system 200, and make each color light incident on the image forming regions of the corresponding light modulation units 400R, 400G, and 400B.

Each of the light modulation units 400R, 400G, and 400B is a liquid crystal type light modulation device in which a liquid crystal that is an electro-optical material is hermetically sealed in a pair of transparent glass substrates, and the color separation light guide optical system 200 from the lens integrator optical system 110. And the light which passed through the condensing lenses 300R, 300G, and 300B is modulated according to image information. The light modulation units 400R, 400G, and 400B are so-called transmission type light modulation devices, and modulate the direction of polarization of light in the image forming region in accordance with an image signal given using a polysilicon TFT as a switching element. Although illustration and detailed description are omitted, an incident-side polarizing plate and an exit-side polarizing plate are respectively provided on the incident side and the exit side of the light modulators 400R, 400G, and 400B. A projection image is formed by a combination of the portions 400R, 400G, and 400B and the exit-side polarizing plate.
For the purpose of synthesizing each color light by the light combining unit 500, it is preferable that red light and blue light are s-polarized light and green light is p-polarized light from the reflection characteristics with respect to the dielectric multilayer film.

  The light combining unit 500 includes a cross dichroic prism that is an element that combines light from the light modulation units 400R, 400G, and 400B and aligns the traveling direction. The cross dichroic prism has, for example, a substantially square shape in plan view in which four right-angle prisms are bonded together, and a dielectric multilayer film is formed on a substantially X-shaped interface in which the right-angle prisms are bonded together. The dielectric multilayer film formed at one of the substantially X-shaped interfaces reflects red light, and the dielectric multilayer film formed at the other interface reflects blue light. By these dielectric multilayer films, the red light and the blue light are bent and aligned with the traveling direction of the green light, so that the three color lights are synthesized.

  The optical fiber unit 700 guides light from the light modulation units 400R, 400G, and 400B to the projection optical system 900. The optical fiber unit 700 passes through the inside of the flexible arm unit 800. The number of optical fibers constituting the optical fiber bundle in the optical fiber unit 700 is equal to or greater than the number of pixels of the light modulation units 400R, 400G, and 400B. The end of the optical fiber unit 700 on the projector main body 600 side is disposed immediately after the light combining unit 500. For this reason, even in the projector 1000 having a plurality of light modulation units, the projector main body 600 and the projection optical system 900 can be simply connected.

  “Arranged immediately after the photosynthesis unit” means that it is arranged at a position that can be regarded as being substantially immediately after the photosynthesis unit in terms of the optical path. For this reason, even when only a light guiding member or a simple member (for example, a polarizing plate or a retardation plate) exists between the light combining unit and the optical fiber unit, the light combining unit is disposed immediately after the light combining unit. It can be said that

  The flexible arm unit 800 connects the projector main body unit 600 and the projection optical system 900 so that the direction and angle of the projection optical system 900 can be freely set. The flexible arm portion 800 is made of, for example, a tube having a shape fixing metal wire. Therefore, the flexible arm unit 800 can be fixed in an arbitrary shape, and as a result, the orientation and position of the projection optical system 900 connected by the flexible arm unit 800 can be fixed and set.

  The projection optical system 900 projects light from the optical fiber unit 700 as a projection image. The projection optical system 900 is connected to the end of the optical fiber unit 700 and focuses the projected image with a built-in projection lens.

  Hereinafter, effects of the projector 1000 according to the first embodiment will be described.

  In the projector 1000 according to the first embodiment, the projector main body 600 and the projection optical system 900 are separated and optically connected by the optical fiber unit 700. Therefore, the orientation and angle of the projection optical system can be adjusted even when the projector main body is fixed. It is a projector that can use optical fibers more actively than conventional projectors.

  Further, according to the projector 1000 according to the first embodiment, the projection optical system 900 can be directed directly above or directly below without moving the projector main body 600, and a projected image can be easily projected directly above or directly below. It becomes possible to do.

  Further, according to the projector 1000 according to the first embodiment, a room for projecting a projected image and a room in which the projector main body 600 is installed can be separated, and the heat generated by the projector main body and the noise of the cooling mechanism are isolated. It becomes possible to do.

  Further, according to the projector 1000 according to the first embodiment, the projector main body 600 and the projection optical system 900 are connected, and the flexible arm unit 800 that can freely set the direction and angle of the projection optical system 900 is provided. It is possible to set the direction and angle of the projection optical system without using a fixture or the like.

[Embodiment 2]
FIG. 3 is a diagram for explaining the projector 1002 according to the second embodiment.

The projector 1002 according to the second embodiment basically has the same configuration as that of the projector 1000 according to the first embodiment, but the configuration of the projector main body and the projection optical system according to the first embodiment is as shown in FIG. This is different from the case of the projector 1000. Along with this, the configurations of the optical fiber portion and the flexible arm portion are also different.
Hereinafter, parts different from the projector 1000 according to the first embodiment will be described.

  The projector main body 602 according to the second embodiment is for installation on the ground side. The projector main body 602 has the same optical components as the projector main body 600 according to the first embodiment, but the components related to cooling are for installation on the ground side.

The optical fiber unit 702 (not shown) and the flexible arm unit 802 are longer than the optical fiber unit 700 and the flexible arm unit 800 in the first embodiment for the convenience of installing the projection optical system 902 on the ceiling c.
The projection optical system 902 is for installation on the ceiling side.

The flexible arm portion 802 is fixed to the ceiling c by a fixing tool f near the projection optical system 902. Since there is a gap between the fixture f and the projection optical system 902, the configuration as described above makes it possible to change the orientation of the projection optical system 902 to some extent.
The projection optical system may be fixed to the ceiling with a fixture. With such a configuration, the projection optical system can be stably fixed and the projection image can be prevented from shaking.
Further, the projection optical system may be fixed by being embedded in the installation location. With such a configuration, the projection optical system can be stably fixed and the projection image can be prevented from being shaken, and the projector can also be excellent in spatial design.

  As described above, the projector 1002 according to the second embodiment is different from the projector 1000 according to the first embodiment in the configuration of the projector main body and the projection optical system, but the projector main body 602 and the projection optical system 902 are separated. Thus, since the optical fiber unit 702 is optically connected, as in the projector 1000 according to the first embodiment, the orientation and angle of the projection optical system can be changed even when the projector main body is fixed. Will be a projector that actively uses optical fiber.

  Further, according to the projector 1002 according to the second embodiment, the projector main body 602 is for installation on the ground side, and the projection optical system 902 is for installation on the ceiling side. Can be installed on the ceiling side (so-called ceiling suspension), and the overhead pressure can be greatly reduced compared to the case where the entire projector is installed on the ceiling side.

  Further, according to the projector 1002 according to the second embodiment, since the projection optical system 902 is lighter than the entire projector 1002, the influence on the projector 1002 when an object installed on the ceiling falls can be reduced. It becomes possible.

  Further, according to the projector 1002 according to the second embodiment, the projector main body 602 can be left installed on the ground side, and as a result, replacement and maintenance of consumables can be facilitated, It is possible to eliminate the danger associated with working at heights.

  The projector 1002 according to the second embodiment has substantially the same configuration as the projector 1000 according to the first embodiment except for the configuration of the projector main body and the projection optical system, and thus the effect of the projector 1000 according to the first embodiment. Of the relevant effects.

[Embodiment 3]
FIG. 4 is a top view showing an optical system of the projector 1004 according to the third embodiment.
FIG. 5 is a diagram of the light combining unit 500 according to the third embodiment viewed from the optical fiber units 704 and 706 side. In FIG. 5, reference numeral 704a indicates a region where the optical fiber unit 704 is disposed immediately after, and reference numeral 706a indicates a region where the optical fiber unit 706 is disposed immediately thereafter.

  As shown in FIG. 4, the projector 1004 according to the third embodiment includes a projector main body unit 600, two optical fiber units 704 and 706, and two projection optical systems 904 and 906 corresponding to the two optical fiber units 704 and 706. Is provided.

  The projector 1004 combines two projection images projected from the two projection optical systems 904 and 906 on the projection target, and projects one projection image as a whole. Such a projector 1004 is particularly suitable for projecting a large projected image.

The projector 1004 can project projected images not only in the direction shown in FIG. 4 but also in various directions by aligning and moving the positions of the two projection optical systems 904 and 906. The projector 1004 preferably further includes a fixture for fixing the positional relationship between the two projection optical systems 904 and 906 in order to facilitate the movement of the two projection optical systems 904 and 906 in alignment. .
In the projector 1004, the illustration description is omitted, but the room where the projected image is projected and the room where the projector main body 600 is installed can be separated.

  The projector main body 600 is basically the same as the projector main body 600 in the first embodiment, the optical fiber portions 704 and 706 are the optical fiber portion 700 in the first embodiment, and the projection optical systems 904 and 906 are the projection optical system 900 in the first embodiment. Have the same configuration. Hereinafter, the optical fiber units 704 and 706 and the projection optical systems 904 and 906 having characteristic points in the third embodiment will be described.

As shown in FIG. 5, the two optical fiber units 704 and 706 are arranged side by side so as to divide the region immediately after the light combining unit 500 into a vertically long shape at the end of the projector main body 600 side.
In addition, illustration is abbreviate | omitted about the protective coating which protects the optical fiber parts 704 and 706. FIG.

  In the projection optical systems 904 and 906, when the light from the optical fiber sections 704 and 706 is projected as it is, a normal lens having a rotator-like shape with the optical axis as the center can be used. Further, in the projection optical systems 904 and 906, when the projection is performed by changing the aspect ratio of the light from the optical fiber units 704 and 706 (especially, the effect of dividing the region immediately after the light combining unit 500 into a vertically long shape as described above. When canceling and projecting at a normal aspect ratio), an anamorphic lens can be used.

  Hereinafter, effects of the projector 1004 according to the third embodiment will be described.

  In the projector 1004 according to the third embodiment, the projector main body 600 and the projection optical systems 904 and 906 are separated and optically connected by the optical fiber portions 704 and 706. The projector can be changed in direction and angle, and the optical fiber is more actively used than the conventional projector.

  Further, according to the projector 1004 according to the third embodiment, the projection optical systems 904 and 906 can be directed directly above or directly below without moving the projector main body 600, and the projected image can be easily projected directly above or directly below. Can be projected.

  Further, according to the projector 1004 according to the third embodiment, a room for projecting a projection image and a room in which the projector main body 600 is installed can be separated, and the heat generated by the projector main body and the noise of the cooling mechanism are isolated. It becomes possible to do.

  In addition, according to the projector 1004 according to the third embodiment, the projector 1004 includes a plurality of optical fiber units 704 and 706, and includes a plurality of projection optical systems 904 and 906 corresponding to the plurality of optical fiber units 704 and 706. Nevertheless, it is possible to project a projected image as if it were a plurality of projectors.

  In addition, according to the projector 1004 according to the third embodiment, a plurality of projection images projected from the plurality of projection optical systems 904 and 906 are synthesized on the projection target, and a single projection image is projected as a whole. It is possible to project a large projected image with only one projector without preparing the projector array and preparing the projector array.

[Embodiment 4]
FIG. 6 is a top view showing an optical system of the projector 1006 according to the fourth embodiment.

  As shown in FIG. 6, the projector 1006 according to the fourth embodiment includes a projector main body 604, two optical fiber units 708 and 710, and two projection optical systems 908 and 910 corresponding to the two optical fiber units 708 and 710. Is provided.

  The projector 1006 according to the fourth embodiment basically has the same configuration as the projector 1004 according to the third embodiment, but the projector according to the third embodiment is a projector for projecting a stereoscopically visible projection image. This is different from the case of 1004.

  The projector 1006 guides the first optical fiber unit 708 that guides one of the two types of polarized light (for example, s-polarized light) and the other polarized light (for example, p-polarized light) different from the one polarized light. 2 and an optical fiber unit 710 for projecting a stereoscopically projected image. The projected image by the projector 1006 can be stereoscopically viewed using, for example, polarizing glasses including polarizing plates that allow only one polarized light for the right eye and only the other polarized light for the left eye.

The projector 1006 can project projected images not only in the direction shown in FIG. 6 but also in various directions by moving the positions of the two projection optical systems 908 and 910 together. The projector 1006 preferably further includes a fixture for fixing the positional relationship between the two projection optical systems 908 and 910 in order to facilitate the movement of the two projection optical systems 908 and 910 with the same position. .
In the projector 1006, the illustration description is omitted, but the room where the projected image is projected and the room where the projector main body 604 is installed can be separated.

  The projector main body 604 is basically the same as the projector main body 600 in the first embodiment, the optical fiber portions 708 and 710 are the optical fiber portion 700 in the first embodiment, and the projection optical systems 908 and 910 are the projection optical system 900 in the first embodiment. Have the same configuration. Hereinafter, the projector main body 604, the optical fiber units 708 and 710, and the projection optical systems 908 and 910 having characteristic points in the fourth embodiment will be described.

The projector main body 604 includes a first wavelength plate 512 corresponding to the first optical fiber unit 708 and a second wavelength plate 514 corresponding to the second optical fiber unit 710 between the light combining unit 500 and the optical fiber units 708 and 710. Prepare.
When red light and blue light are s-polarized light and green light is p-polarized light, the first wave plate 512 is made of a wave plate that selectively changes the polarization direction of the green light, and the second wave plate 514 is red light. And a wave plate that selectively changes the polarization direction of blue light.

The optical fiber units 708 and 710 are arranged side by side so as to divide the region immediately after the light combining unit 500 into a vertically long shape at the end of the projector main body 604 side.
In addition, illustration is abbreviate | omitted about the protective coating which protects the optical fiber parts 708 and 710. FIG.

  In the projection optical systems 908 and 910, when the light from the optical fiber portions 708 and 710 is projected as it is, a normal lens having a rotating body-like shape centering on the optical axis can be used. In the projection optical systems 908 and 910, when the projection is performed by changing the aspect ratio of the light from the optical fiber units 708 and 710 (especially, the effect of dividing the region immediately after the light combining unit 500 into the vertically long shape as described above. When canceling and projecting at a normal aspect ratio), an anamorphic lens can be used.

  Hereinafter, effects of the projector 1006 according to the fourth embodiment will be described.

  The projector 1006 according to the fourth embodiment is different from the projector 1004 according to the third embodiment in that it is a projector for projecting a stereoscopically visible projection image, but the projector main body 604 and the projection optical systems 908 and 910 are different. Are separated and optically connected by the optical fiber units 708 and 710, so that the orientation and angle of the projection optical system can be changed even with the projector main body fixed, as in the projector 1004 according to the fourth embodiment. It becomes a projector that uses optical fiber more actively than conventional projectors.

  Further, according to the projector 1006 according to the fourth embodiment, as the plurality of optical fiber units, the first optical fiber unit 708 that guides one of the two types of polarized light and the other polarized light different from the one polarized light are guided. Since the second optical fiber unit 710 that emits light and projects a stereoscopically projected image, a single projector can project a stereoscopically projected image without reducing the frame rate.

  Since the projector 1006 according to the fourth embodiment basically has the same configuration as the projector 1004 according to the third embodiment, the projector 1004 according to the third embodiment has a corresponding effect as it is among the effects of the projector 1004 according to the third embodiment.

[Embodiment 5]
FIG. 7 is a top view showing an optical system of the projector 1008 according to the fifth embodiment.
FIG. 8 is a diagram of the light combining unit 500 according to the fifth embodiment viewed from the optical fiber units 712, 714, 716, and 718 side. 8, reference numeral 712a indicates a region where the optical fiber unit 712 is disposed immediately after, reference numeral 714a indicates a region where the optical fiber unit 714 is disposed immediately thereafter, and reference numeral 716a indicates that the optical fiber unit 716 is disposed immediately thereafter. The reference numeral 718a indicates a region where the optical fiber portion 718 is disposed immediately after.

  The projector 1006 according to the fifth embodiment basically has the same configuration as that of the projector 1004 according to the third embodiment, but the projector 1006 according to the third embodiment is a projector for projecting projection images onto a plurality of projection targets. This is different from the case of the projector 1004.

  As shown in FIG. 7, the projector 1008 according to the fifth embodiment corresponds to the projector main body 600, the four optical fiber units 712, 714, 716, 718 and the four optical fiber units 712, 714, 716, 718. Two projection optical systems 912, 914, 916, and 918.

  In the projector 1008, the four projection optical systems 912, 914, 916, and 918 project the projected images onto the screens SCR1, SCR2, SCR3, and SCR4 that are the four projection targets, respectively. The projection images projected by the projector 1008 may be all different projection images, or two or more, or all may be the same projection image.

The projector 1008 can project projected images not only in the direction shown in FIG. 7 but also in various directions by moving the positions of the four projection optical systems 912, 914, 916, and 918, respectively.
In the projector 1008, although the illustration is omitted, a room for projecting a projection image and a room for installing the projector main body 600 may be separated.

  The projector main body 600 is the projector main body 600 in the first embodiment, the optical fiber portions 712, 714, 716, and 718 are the optical fiber portion 700 in the first embodiment, and the projection optical systems 912, 914, 916, and 918 are the projections in the first embodiment. Each of the optical systems 900 has basically the same configuration. Hereinafter, the optical fiber units 712, 714, 716, 718 and the projection optical systems 912, 914, 916, 918 having characteristic points in the fifth embodiment will be described.

As shown in FIG. 8, the four optical fiber portions 712, 714, 716, and 718 are arranged side by side so as to divide the region immediately after the light combining portion 500 into a vertically long portion at the end on the projector main body portion 600 side.
In addition, illustration is abbreviate | omitted about the protective coating which protects the optical fiber parts 712,714,716,718.

  In the projection optical systems 912, 914, 916, and 918, when the light from the optical fiber units 712, 714, 716, and 718 is projected as it is, a normal lens having a rotating body-like shape centering on the optical axis is used. Can be used. Further, in the projection optical systems 912, 914, 916, and 918, when projecting by changing the aspect ratio of the light from the optical fiber units 712, 714, 716, and 718 (particularly immediately after the light combining unit 500 as described above). An anamorphic lens can be used to cancel the influence of dividing a region vertically and project at a normal aspect ratio.

  Hereinafter, effects of the projector 1008 according to the fifth embodiment will be described.

  The projector 1008 according to the fifth embodiment is different from the projector 1004 according to the third embodiment in that it is a projector for projecting projected images onto a plurality of projection targets, but the projector main body 600 and the projection optical system 912. Since 914, 916, and 918 are separated and optically connected by optical fiber units 712, 714, 716, and 718, similarly to the projector 1004 according to the third embodiment, the projection optical system can be used even with the projector main unit fixed. The projector can be changed in direction and angle, and the optical fiber is more actively used than the conventional projector.

Further, according to the projector 1008 according to the fifth embodiment, since the four projection optical systems 912, 914, 916, and 918 project the projected images onto the four projection objects, respectively, a plurality of projected images can be obtained with one projector. It is possible to project separately.
Since the projector 1008 according to the fifth embodiment basically has the same configuration as the projector 1004 according to the third embodiment, the projector 1004 according to the third embodiment has a corresponding effect as it is among the effects of the projector 1004 according to the third embodiment.

[Embodiment 6]
FIG. 9 is a top view for explaining the projector 1010 according to the sixth embodiment.

  As shown in FIG. 9, the projector 1010 according to the sixth embodiment includes two projector main body portions 606 and 608, two optical fiber portions 720 and 722 corresponding to the plurality of projector main body portions 606 and 608, and one projection optical. A system 920.

  In the projector 1010, two optical fiber units 720 and 722 guide light to one projection optical system 920. Such a projector 1010 is particularly suitable for projecting an ultra-high-definition projected image or projecting a stereoscopically viewable projected image without reducing both the frame rate and the image quality.

The projector 1010 can project the projected image in various directions as well as the direction shown in FIG. 9 by moving the position of the projection optical system 920 in alignment.
In the projector 1010, the description by illustration is omitted, but the room where the projected image is projected and the room where the projector main body portions 606 and 608 are installed can be separated.

  The projector main body portions 606 and 608 are basically the same as the projector main body portion 600 in the first embodiment, the optical fiber portions 720 and 722 are the optical fiber portion 700 in the first embodiment, and the projection optical system 920 is the projection optical system 900 in the first embodiment. Have the same configuration. Hereinafter, projector main body portions 606 and 608 and optical fiber portions 720 and 722 having characteristic points in the sixth embodiment will be described.

  The two projector main body portions 606 and 608 have the same configuration as the projector main body portion 600 in the first embodiment. When it is desired to project an ultra-high-definition projected image, it can be realized, for example, by drawing and drawing pixels of one projected image by sharing the two projector main bodies. Further, when it is desired to project a stereoscopically projected image without reducing both the frame rate and the image quality, for example, the projector body 606 draws a projection image composed of polarized light on one side, and the projector body 608 is on the other side. This can be realized by drawing a projected image composed of the polarized light on the side.

The two optical fiber units 720 and 722 may be arranged side by side without breaking the bundle of optical fibers at the end on the projection optical system 920 side, or are combined and arranged to form one optical fiber bundle. May be.
In addition, illustration is abbreviate | omitted about the protective coating which protects the optical fiber parts 720 and 722. FIG.

  Hereinafter, effects of the projector 1010 according to the sixth embodiment will be described.

  In the projector 1010 according to the sixth embodiment, the projector main body portions 606 and 608 and the projection optical system 920 are separated and optically connected by the optical fiber portions 720 and 722. The projector can be changed in direction and angle, and the optical fiber is more actively used than the conventional projector.

  Further, according to the projector 1010 according to the sixth embodiment, the projection optical system 920 can be directed directly above or directly below without moving the projector main body portions 606 and 608, and the projected image can be easily projected directly above or directly below. Can be projected.

  Further, according to the projector 1010 according to the sixth embodiment, a room for projecting a projection image and a room in which the projector main body units 606 and 608 are installed can be separated, and the heat generated by the projector main body unit and the noise of the cooling mechanism. Can be isolated.

  Further, according to the projector 1010 according to the sixth embodiment, the two projector main body portions 606 and 608, the plurality of optical fiber portions 720 and 722 corresponding to the two projector main body portions 606 and 608, and one projection optical system 920 are provided. Since the two optical fiber units 720 and 722 guide light to one projection optical system 920, the light from the two projector main body units can be combined and projected from one projection optical system, It is possible to project a high-definition projected image or to project a stereoscopically viewable projection image without reducing both the frame rate and the image quality.

  As mentioned above, although this invention was demonstrated based on said embodiment, this invention is not limited to said embodiment. The present invention can be carried out in various modes without departing from the spirit thereof, and for example, the following modifications are possible.

(1) The dimensions, the number, the material, and the shape of each component described in the above embodiment are exemplifications, and can be changed within a range not impairing the effects of the present invention.

(2) In the first and second embodiments, the projector main body is installed on the ground side, but the present invention is not limited to this. FIG. 10 is a diagram for explaining a projector 1012 according to the first modification. When the projector main body corresponds to the installation angle and the installation direction, for example, as shown in FIG. 10, the projector main body 610 may be installed on the ceiling side. Further, the projector main body may be installed on the wall surface.

(3) In each of the above embodiments, a screen is used as a projection target, but the present invention is not limited to this. Various objects such as walls, floors, ceilings, blackboards, and whiteboards can be used as projection targets.

(4) In the third and fourth embodiments, as shown in FIG. 5, the two optical fiber units are arranged side by side so as to divide the region immediately after the light combining unit 500 into a vertically long shape at the end on the projector main body side. However, the present invention is not limited to this. FIG. 11 is a diagram of the light combining unit 500 according to the second modification viewed from the optical fiber units 724 and 726 side. 10, reference numeral 724a indicates a region where an optical fiber portion 724 (not shown) is disposed immediately after, and reference numeral 726a indicates a region where an optical fiber portion 726 (not shown) is disposed immediately thereafter. As the arrangement of the plurality of optical fiber portions, one suitable for the purpose of use can be used. For example, as shown in FIG. 11, the two optical fiber units 724 and 726 may be arranged side by side so as to divide the region immediately after the light combining unit 500 into a horizontally long shape at the end on the projector main body side.

(5) In the fifth embodiment, as shown in FIG. 8, the four optical fiber units 712, 714, 716, and 718 divide the region immediately after the light combining unit 500 into a vertically long portion at the end on the projector body 600 side. However, the present invention is not limited to this. FIG. 12 is a diagram of the light combining unit 500 according to the third modification viewed from the optical fiber units 728, 730, 732, and 734 side. In FIG. 12, reference numeral 728a indicates a region where an optical fiber portion 728 (not shown) is disposed immediately after, and reference numeral 730a indicates a region where an optical fiber portion 730 (not illustrated) is disposed immediately thereafter. Reference numeral 732a indicates a region where the optical fiber portion 732 (not shown) is disposed immediately after, and reference numeral 734a indicates a region where the optical fiber portion 734 (not illustrated) is disposed immediately thereafter. As the arrangement of the plurality of optical fiber portions, one suitable for the purpose of use can be used. For example, as shown in FIG. 12, the four optical fiber units 712, 714, 716, and 718 are arranged side by side so as to divide the region immediately after the light combining unit 500 into a cross at the end on the projector main body side. Also good.

(6) The number of projector main bodies, the number of optical fiber sections, and the number of projection optical systems in each projector described in each of the above embodiments are examples, and the number of projector main bodies, optical fiber sections, and projection optics suitable for the purpose of use. A system can be used.

(7) In Embodiments 3 to 6, the projector does not include the flexible arm, but the present invention is not limited to this. FIG. 13 is a top view showing an optical system of a projector 1018 according to the fourth modification. The projector 1018 basically has the same configuration as the projector 1004 according to the third embodiment, but includes a flexible arm unit 806 as shown in FIG. As in the second modification, the projector similar to the third to sixth embodiments may include a flexible arm portion.

(8) In Embodiments 3 to 6, the installation positions of the projector main body and the projection optical system are not particularly defined, but the present invention is not limited to this. Also in the projectors similar to the third to sixth embodiments, as in the second embodiment, the projector main body is for installation on the ground side, and the projection optical system is for installation on the ceiling side. Thus, among the effects described in the second embodiment, effects specific to the second embodiment can be obtained.

(9) In each of the above-described embodiments, the light modulation unit including a liquid crystal type light modulation device is used. However, the present invention is not limited to this. For example, a light modulation unit including a micromirror type light modulation device may be used.

DESCRIPTION OF SYMBOLS 10 ... Light source device, 20 ... Light collimation optical system, 100 ... Illumination device, 100ax ... Illumination optical axis, 110 ... Lens integrator optical system, 120 ... 1st lens array, 122 ... 1st small lens, 130 ... 2nd lens Array, 132 ... second small lens, 140 ... polarization conversion element, 150 ... superimposed lens, 200 ... color separation light guide optical system, 210,220 ... dichroic mirror, 230,240,250 ... reflection mirror, 260,270 ... relay Lens, 300R, 300G, 300B ... Condensing lens, 400R, 400G, 400B ... Light modulator, 500 ... Light modulator, 600, 602, 604, 606, 608 ... Projector body, 700, 704, 706, 708, 710, 712, 714, 716, 718, 720, 722 ... Optical fiber part, 704a, 706 , 712 a, 714 a, 716 a, 718 a, 724 a, 726 a, 728 a, 730 a, 732 a, 734 a.. 906, 908, 910, 912, 914, 916, 918, 920 ... projection optical system, c ... ceiling, d ... installation base, f ... fixture, SCR, SCR1, SCR2, SCR3, SCR4 ... screen

Claims (8)

A projector body having a light modulator that modulates light according to image information;
An optical fiber part for guiding light from the light modulation part;
A projector comprising: a projection optical system that projects light from the optical fiber unit as a projection image. The projector according to claim 1,
The projector main body unit and the projection optical system are connected, and further includes a flexible arm unit capable of freely setting the direction and angle of the projection optical system,
The projector, wherein the optical fiber section passes through the flexible arm section. The projector according to claim 1, wherein
As the optical fiber part, comprising a plurality of optical fiber parts,
A projector comprising a plurality of projection optical systems corresponding to the plurality of optical fiber units as the projection optical system. The projector according to claim 3,
A projector characterized in that a plurality of projection images projected from the plurality of projection optical systems are synthesized on a projection target, and one projection image is projected as a whole. The projector according to claim 3,
As the plurality of optical fiber units, a first optical fiber unit that guides one of two types of polarized light and a second optical fiber unit that guides the other polarized light different from the one polarized light can be stereoscopically viewed. A projector characterized by projecting a simple projected image. The projector according to claim 3,
The plurality of projection optical systems project projected images onto a plurality of projection objects, respectively. The projector according to claim 1 or 2,
As the projector body, a plurality of projector bodies are provided,
The optical fiber unit includes a plurality of optical fiber units corresponding to the plurality of projector main body units,
The projection optical system includes one projection optical system,
The plurality of optical fiber units guide light to the one projection optical system. The projector according to claim 1,
The projector body is for installation on the ground side,
The projection optical system is for installation on a ceiling side.

Images