Position adjustment device and projection system

Abstract

To provide a position adjustment apparatus and a projection system capable of simplifying the operation of adjusting a projection position of image light projected from a plurality of projectors.SOLUTION: A position adjustment apparatus comprises: a housing including a first space in which a first projector is disposed and a second space in which a second projector is disposed; a first rotary table on which the first projector is placed and which is rotatably supported by the housing about a first rotation axis; and a second rotary table on which the second projector is placed and which is rotatably supported by the housing about a second rotation axis parallel to the first rotation axis. The housing includes a first opening through which first image light projected from the first projector passes, and a second opening through which second image light projected from the second projector passes. A rotation direction of the first rotary table and a rotation direction of the second rotary table are opposite to each other. Rotation of the first rotary table and rotation of the second rotary table are in conjunction with each other.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a position adjustment device and a projection system. [Background technology]

[0002] 2. Description of the Related Art Conventionally, a three-tiered multi-stacking projection device capable of mounting three projectors is known (see, for example, Patent Document 1). The multi-stacking projection device described in Patent Document 1 is configured by vertically stacking three support stages that support projectors. Each support stage includes a mounting plate on which the projector is placed, an inclination adjustment mechanism, and a left-right adjustment mechanism. The inclination adjustment mechanism adjusts the vertical inclination of the mounting plate on which the projector is placed, and thus adjusts the vertical inclination of the projector. The left-right adjustment mechanism adjusts the left-right inclination of the mounting plate on which the projector is placed, and thus adjusts the left-right inclination of the projector. The projection direction of the projector is adjusted by the inclination adjustment mechanism and the left-right adjustment mechanism. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2000-137288 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the multi-stacking projection device described in Patent Document 1, when adjusting the projection direction of the image light of each projector, it is necessary to adjust each projector one by one by operating the tilt adjustment mechanism and left / right adjustment mechanism, which causes a problem that the work of adjusting the projection position of the image light projected from multiple projectors is complicated. [Means for solving the problem]

[0005] A position adjustment device according to a first aspect of the present disclosure includes a housing having a first space in which a first projector is arranged and a second space in which a second projector is arranged, a first rotating table on which the first projector is mounted and supported by the housing so as to be rotatable around a first rotation axis, and a second rotating table on which the second projector is mounted and supported by the housing so as to be rotatable around a second rotation axis parallel to the first rotation axis, wherein the housing has a first opening through which a first image light projected from the first projector passes and a second opening through which a second image light projected from the second projector passes, wherein the rotation direction of the first rotating table and the rotation direction of the second rotating table are opposite to each other, and the rotation of the first rotating table and the rotation of the second rotating table are linked to each other.

[0006] A projection system according to a second aspect of the present disclosure includes a first projector that projects a first image light, a second projector that projects a second image light, and the position adjustment device according to the first aspect. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a plan view showing a projection system according to an embodiment. [Diagram 2] FIG. 1 is a schematic diagram showing the configuration of a projector according to an embodiment. [Diagram 3] FIG. 1 is a perspective view showing a projection system according to an embodiment. [Figure 4] FIG. 1 is a perspective view showing a projection system according to an embodiment. [Diagram 5] FIG. 2 is a cross-sectional view of a position adjustment device along an XZ plane according to an embodiment. [Figure 6] FIG. 1 is a cross-sectional view of a position adjustment device along a YZ plane according to an embodiment; [Figure 7] FIG. 2 is a plan view showing the inside of the position adjustment device in a state where the projector and the rotating table are removed according to an embodiment. [Figure 8] FIG. 2 is a perspective view showing a first rotating table supported by a first support portion and a second rotating table supported by a second support portion according to one embodiment. [Figure 9] FIG. 2 is a perspective view showing a first turntable and a second turntable according to an embodiment. [Figure 10] FIG. 2 is a plan view showing a first turntable on which a first projector is placed according to an embodiment. [Figure 11] FIG. 4 is a bottom view showing the first turntable on which the first projector is placed according to an embodiment. [Figure 12] 5A and 5B are diagrams showing the rotational states of each projector when the operation lever is slid according to an embodiment. [Figure 13] 5A and 5B are diagrams showing the rotational states of each projector when the operation lever is slid according to an embodiment. [Figure 14] FIG. 11 is a perspective view showing another model of projector and a rotating base according to an embodiment. [Figure 15] FIG. 11 is a bottom view showing another model of projector and a rotating base according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. [Projection system configuration] FIG. 1 is a plan view showing the projection system 1 with a top panel 451 of a position adjustment device 3 removed. 1, a projection system 1 according to this embodiment includes two projectors 2 and a position adjustment device 3 that houses the two projectors 2. The projection system 1 can project, for example, one continuous image onto a projection surface such as a screen using image light projected from each projector 2, and can also project two images spaced apart from each other onto the projection surface. Each component of the projection system 1 will be described below.

[0009] [Projector configuration] FIG. 2 is a schematic diagram showing the configuration of the projector 2. As shown in FIG. 2, the projector 2 includes an exterior housing 21, an image projection device 22, and a cooling device 29. In addition, although not shown, the projector 2 includes a control device that controls the operation of the projector 2, and a power supply device that supplies power to electronic components that constitute the projector 2.

[0010] [Exterior casing configuration] The exterior housing 21 constitutes the exterior of the projector 2, and houses the image projection device 22 and the cooling device 29. The exterior housing 21 has a front surface 211, a rear surface 212, a right side surface 213, and a left side surface 214, as well as a top surface and a bottom surface which are not shown in Fig. 2. The front surface 211 and the rear surface 212 are surfaces opposite to each other, the right side surface 213 and the left side surface 214 are surfaces opposite to each other, and the top surface and the bottom surface are surfaces opposite to each other.

[0011] The front surface 211 has an injection port 2111 and an exhaust port 2112 . The projection aperture 2111 is an opening through which the image light projected by the projection optical device 28 of the image projection device 22 passes. The exhaust port 2112 is provided in a portion of the front surface 211 on the left side surface 214 side. The exhaust port 2112 exhausts gas that has circulated inside the exterior housing 21 to the outside of the exterior housing 21. The right side surface 213 has an air intake port 2131. The air intake port 2131 introduces gas outside the exterior housing 21 into the interior of the exterior housing 21 as cooling gas. Although not shown in the figure, the bottom surface is provided with a plurality of screw holes to which metal fittings for supporting the projector 2 in a suspended state with the top surface facing downwards are fixed.

[0012] [Configuration of image projection device] The image projection device 22 forms image light according to image information input from the control device, and projects the formed image light. The image projection device 22 includes a light source device 23, a homogenizing optical system 24, a color separation optical system 25, a relay optical system 26, an image forming device 27, and a projection optical device 28, which are arranged on an optical axis Ax set in the image projection device 22.

[0013] The light source device 23 emits illumination light to the homogenizing optical system 24. An example of the configuration of the light source device 23 is a configuration having a solid-state light source that emits blue light, which is excitation light, and a wavelength conversion element that converts at least a part of the blue light emitted from the solid-state light source into fluorescence containing green light and red light. Other examples of the configuration of the light source device 23 include a configuration having a light source lamp such as an extra-high pressure mercury lamp, or a configuration having a light-emitting element that individually emits blue light, green light, and red light. The homogenizing optical system 24 homogenizes the light emitted from the light source device 23. The homogenized light passes through a color separation optical system 25 and a relay optical system 26, and illuminates a modulation area of ​​a light modulation element 273 (described later). The homogenizing optical system 24 includes two lens arrays 241 and 242, a polarization conversion element 243, and a superimposing lens 244. The color separation optical system 25 separates the light incident from the homogenization optical system 24 into red, green, and blue color lights. The color separation optical system 25 includes two dichroic mirrors 251 and 252, and a reflecting mirror 253 that reflects the blue light separated by the dichroic mirror 251.

[0014] The relay optical system 26 is provided on the optical path of the red light which is longer than the optical paths of the other colored lights, and suppresses loss of the red light. The relay optical system 26 includes an incident side lens 261, a relay lens 263, and reflecting mirrors 262 and 264. In this embodiment, the red light is guided to the relay optical system 26. However, this is not limiting, and for example, the colored light having a longer optical path than the other colored lights may be blue light, and the blue light may be guided to the relay optical system 26.

[0015] The image forming device 27 modulates the incident red, green, and blue color lights and combines the modulated color lights to form image light. The image forming device 27 has three field lenses 271 provided according to the incident color lights, three incident side polarizing plates 272, three light modulation elements 273, three exit side polarizing plates 274, and one light combining element 275.

[0016] The light modulation element 273 modulates the light emitted from the light source device 23 based on an image signal input from the control device. Specifically, the light modulation element 273 modulates the color light incident from the incident side polarizing plate 272 according to the image signal input from the control device, and emits the modulated color light. The three light modulation elements 273 include a light modulation element 273R for red light, a light modulation element 273G for green light, and a light modulation element 273B for blue light. In this embodiment, the light modulation element 273 is configured by a transmissive liquid crystal panel having different light incident and light exit surfaces, and the incident side polarizing plate 272, the light modulation element 273, and the exit side polarizing plate 274 configure a liquid crystal light valve.

[0017] The light combining element 275 combines the three color lights modulated by the light modulation elements 273B, 273G, and 273R to form image light. The image light formed by the light combining element 275 is incident on the projection optical device 28. In this embodiment, the light combining element 275 is configured by a substantially rectangular parallelepiped cross dichroic prism, but may be configured by a plurality of dichroic mirrors.

[0018] The projection optical device 28 projects the image light incident from the image forming device 27 onto a projection surface such as a screen. The projection optical device 28 can be, for example, a lens assembly including a plurality of lenses (not shown) and a lens barrel that houses the plurality of lenses.

[0019] [Cooling system configuration] The cooling device 29 cools a cooling target of the projector 2. The cooling device 29 includes an intake fan 291, a duct 292, and an exhaust fan 293. The intake fan 291 is provided inside the exterior housing 21 at a position facing the intake port 2131. The intake fan 291 draws in gas outside the exterior housing 21 through the intake port 2131 and introduces it into the exterior housing 21 as cooling gas. The intake fan 291 sends the drawn cooling gas to, for example, the light modulation element 273. The duct 292 connects the light source device 23 and the exhaust fan 293. Inside the duct 292, the cooling gas that has cooled the light source device 23 flows. The exhaust fan 293 is provided in a position facing the exhaust port 2112 inside the exterior housing 21. The exhaust fan 293 draws in the cooling gas that has circulated through the duct 292 and the cooling gas that has circulated inside the exterior housing 21. The exhaust fan 293 exhausts the drawn in cooling gas to the outside of the exterior housing 21, i.e., to the outside of the projector 2, through the exhaust port 2112.

[0020] 1, two such projectors 2 are provided in the position adjustment device 3. Of the two projectors 2, one projector 2 is a first projector 2A that is fixed to a first turntable 6A (to be described later) and arranged in a first space SP1 in the position adjustment device 3. Of the two projectors 2, the other projector 2 is a second projector 2B that is fixed to a second turntable 6B (to be described later) and arranged in a second space SP2 in the position adjustment device 3. The first projector 2A projects the first image light PL1, and the second projector 2B projects the second image light PL2.

[0021] [Configuration of position adjustment device] FIG. 3 is a perspective view showing the projection system 1 as viewed from the front side, and FIG. 4 is a perspective view showing the projection system 1 as viewed from the rear side. The position adjustment device 3 supports the two projectors 2. The position adjustment device 3 adjusts the projection direction of the image light from each of the projectors 2A and 2B by adjusting the orientation of the projectors 2A and 2B with respect to the projection surface, thereby adjusting the size of the image displayed on the projection surface by each image light. 1, 3, and 4, the position adjustment device 3 includes a housing 4, and also includes two rotating tables 6 and one operating lever 7, as shown in Fig. 1. Of the two rotating tables 6, one rotating table 6 is a first rotating table 6A on which the first projector 2A is placed, and the other rotating table 6 is a second rotating table 6B on which the second projector 2B is placed.

[0022] [Housing configuration] The housing 4 is a box-shaped housing that houses the two rotating tables 6 and the operating lever 7. As shown in Fig. 1, the housing 4 has a front surface 41, a back surface 42, a right side surface 43, and a left side surface 44, as well as a top surface 45 shown in Fig. 4 and a bottom surface 46 shown in Fig. 3, and is configured in a substantially rectangular parallelepiped shape. In the following description, the three mutually perpendicular directions are defined as the +X direction, +Y direction, and +Z direction. The +Z direction is defined as the direction from the rear surface 42 to the front surface 41, the +X direction is defined as the direction from the right side surface 43 to the left side surface 44, and the +Y direction is defined as the direction from the bottom surface 46 to the top surface 45. Although not shown in the figures, the direction opposite to the +X direction is defined as the -X direction, the direction opposite to the +Y direction is defined as the -Y direction, and the direction opposite to the +Z direction is defined as the -Z direction. The direction along the +X direction is defined as the X axis, the axis along the +Y direction is defined as the Y axis, and the axis along the +Z direction is defined as the Z axis. The front surface 41 and the back surface 42 are surfaces opposite each other along the Z axis, the right side surface 43 and the left side surface 44 are surfaces opposite each other along the X axis, and the top surface 45 and the bottom surface 46 are surfaces opposite each other along the Y axis.

[0023] As shown in FIG. 3, the front surface 41 has a guide wall 411 , a first opening 412 and a second opening 413 . The guide wall 411 is a generally T-shaped member provided at approximately the center of the front surface 41 in the X-axis direction, and a portion of the guide wall 411 protrudes into the housing 4. That is, the guide wall 411 has a flat plate portion 4111 exposed to the outside of the housing 4, and a guide portion 4112 protruding in the -Z direction from the -Z direction surface of the flat plate portion 4111 further than a first discharge port 452 described later. The guide wall 411 guides the cooling gas discharged from the exhaust port 2112 of the first projector 2A disposed in the first space SP1 inside the housing 4 to a first exhaust port 452 which will be described later.

[0024] The first opening 412 is provided in the −X direction with respect to the guide wall 411. The first opening 412 is an opening through which the first image light PL1 passes. The second opening 413 is provided in the +X direction with respect to the guide wall 411. The second opening 413 is an opening through which the second image light PL2 passes.

[0025] The right side surface 43 has a first inlet 431. The first inlet 431 communicates between the first space SP1 in the housing 4 and the outside of the housing 4. The first inlet 431 introduces gas from the outside of the housing 4 into the first space SP1. The bottom surface 46 has four legs 461. Each of the four legs 461 is provided at a corner of the rectangular bottom surface 46. Of the four legs 461, the two legs 461 arranged on the front surface 41 side or the two legs 461 arranged on the rear surface 42 side may be legs whose dimensions from the installation surface on which the position adjustment device 3 is placed can be adjusted.

[0026] As shown in FIG. 4, the rear surface 42 is composed of a handle 421, a first rear surface portion 422 and a second rear surface portion 423. The handle 421 is provided at approximately the center of the back surface 42 in the X-axis direction. The first rear portion 422 is disposed in the -X direction with respect to the handle 421. The first rear portion 422 is detachable from the housing 4, and by removing the first rear portion 422 from the housing 4, an operating lever 7, which will be described later, is exposed on the rear portion 42 side. The second rear portion 423 is disposed in the +X direction with respect to the handle 421. The second rear portion 423 has a second introduction port 424. That is, the housing 4 has the second introduction port 424. The second rear portion 423 is also detachable from the housing 4. The second inlet 424 is provided at a position on the handle 421 side of the second rear portion 423. The second inlet 424 communicates between the second space SP2 in the housing 4 and the outside of the housing 4. The second inlet 424 introduces gas from the outside of the housing 4 into the second space SP2.

[0027] The left side surface 44 has a second exhaust port 441. The second exhaust port 441 is provided in the +Y direction and the +Z direction on the left side surface 44. The second exhaust port 441 communicates between the second space SP2 and the outside of the housing 4, and exhausts the gas in the second space SP2 to the outside of the housing 4. In other words, the second exhaust port 441 exhausts the cooling gas exhausted from the exhaust port 2112 of the second projector 2B arranged in the second space SP2 to the outside of the housing 4.

[0028] The top surface 45 is constituted by a top plate 451 that is detachably provided to the housing 4. The top surface 45 has a first exhaust port 452 and a recess 453 provided in the top plate 451. The first exhaust port 452 is provided in a portion of the top surface 45 in the +Z direction. More specifically, the first exhaust port 452 is provided at a position on the second space SP2 side on the top surface 45 of the housing 4 covering the first space SP1 and the second space SP2. The first exhaust port 452 communicates the first space SP1 with the outside of the housing 4, and exhausts the gas in the first space SP1 to the outside of the housing 4. That is, the first exhaust port 452 exhausts the cooling gas exhausted from the exhaust port 2112 of the first projector 2A arranged in the first space SP1 to the outside of the housing 4. As described above, at least a part of the cooling gas exhausted from the first projector 2A is guided to the first exhaust port 452 by the guide wall 411.

[0029] FIG. 5 is a diagram showing a cross section of the position adjustment device 3 along the XY plane, and FIG. 6 is a diagram showing a cross section of the position adjustment device 3 along the YZ plane. 5 and 6, the top plate 451 has a partition wall 4511. That is, the housing 4 has a partition wall 4511. 5, the partition wall 4511 partitions the space into a first space SP1 in which the first projector 2A and the first rotary table 6A are disposed, and a second space SP2 in which the second projector 2B and the second rotary table 6B are disposed. As shown in Fig. 6, the end of the partition wall 4511 in the -Y direction does not contact the inner surface of the bottom surface 46. Therefore, the operation lever 7, which will be described later, can be disposed across the first space SP1 and the second space SP2, and can slide along the Z axis.

[0030] [Internal structure of the position adjustment device] Fig. 7 is a plan view showing the inside of the position adjustment device 3 as seen from the +Y direction. In detail, Fig. 7 is a plan view showing the inside of the position adjustment device 3 with the projectors 2A and 2B and the rotary bases 6A and 6B removed. 7, a first support portion 47, a first fixed member 48, a second support portion 49, a second fixed member 50, and a slide rail 51 are provided on an inner surface 46A of the bottom surface 46. That is, the housing 4 includes the first support portion 47, the first fixed member 48, the second support portion 49, the second fixed member 50, and the slide rail 51 provided on the inner surface 46A. The inner surface 46A of the bottom surface 46 refers to the inner surface 46A of the inner surface of the housing 4 opposite to the bottom surface 46.

[0031] The first support portion 47 and the first fixing member 48 are disposed in a region in the -X direction on the inner surface 46A. In other words, the first support portion 47 and the first fixing member 48 are provided in a first space SP1 in the -X direction within the space within the housing 4. The second support portion 49 and the second fixing member 50 are disposed in a region in the +X direction on the inner surface 46A. In other words, the second support portion 49 and the second fixing member 50 are provided in a second space SP2 in the +X direction within the space within the housing 4.

[0032] The first support part 47 supports the first rotating table 6A, and the second support part 49 supports the second rotating table 6B. The first support part 47 includes a first cylindrical support part 471, three first fixed parts 472, and three first rotating support parts 473. Similarly, the second support part 49 includes a second cylindrical support part 491, three second fixed parts 492, and three second rotating support parts 493.

[0033] FIG. 8 is a perspective view showing the first rotating table 6A supported by the first support portion 47 and the second rotating table 6B supported by the second support portion 49. As shown in FIG. 7 and 8, the first cylindrical support portion 471 and the second cylindrical support portion 491 each protrude in a cylindrical shape from the inner surface 46A. The first cylindrical support portion 471 is inserted into a cylindrical portion 61 (to be described later) of the first turntable 6A, and the second cylindrical support portion 491 is inserted into a cylindrical portion 61 (to be described later) of the second turntable 6B. An axis that is parallel to the Y axis and passes through the center of the first cylindrical support part 471 when viewed from the +Y direction is the first rotation axis Rx1 of the first turntable 6A. An axis that is parallel to the Y axis and passes through the center of the second cylindrical support part 491 when viewed from the +Y direction is the second rotation axis Rx2 of the second turntable 6B. In this way, the first rotation axis Rx1 and the second rotation axis Rx2 are parallel to each other. Note that the first rotation axis Rx1 and the second rotation axis Rx2 being parallel to each other includes the case where they are approximately parallel to each other.

[0034] 7 and 8, the three first fixing portions 472 are provided at circumferential positions centered on the first rotation axis Rx1. As shown in Fig. 8, each of the first fixing portions 472 is a screw hole into which a double-step screw SC is inserted, the double-step screw SC passing through the first rotating table 6A from the +Y direction. 7 and 8, the three second fixing portions 492 are provided at circumferential positions centered on the second rotation axis Rx2. As shown in Fig. 8, each of the first fixing portions 472 fixes a two-stage screw SC that passes through the second rotating table 6B from the +Y direction. The three first fixed portions 472 do not have to be spaced the same distance from the first rotation axis Rx1, and the three second fixed portions 492 do not have to be spaced the same distance from the second rotation axis Rx2.

[0035] 7 and 8, the three first rotation support parts 473 are provided at circumferential positions centered on the first rotation axis Rx1. Each of the first rotation support parts 473 supports the first turntable 6A from the -Y direction so as to be rotatable about the first rotation axis Rx1. The three second rotation support parts 493 are provided at positions in the circumferential direction centered on the second rotation axis Rx2. Each of the second rotation support parts 493 supports the second turntable 6B from the -Y direction so as to be rotatable about the second rotation axis Rx2. In this embodiment, the first rotation support portion 473 and the second rotation support portion 493 are configured by free ball bearings. However, the present invention is not limited to this, and the first rotation support portion 473 and the second rotation support portion 493 may have other configurations, and the rotation support portions 473, 493 may not be present. Furthermore, the three first rotation support portions 473 do not have to be at the same distance from the first rotation axis Rx1, and the three second rotation support portions 493 do not have to be at the same distance from the second rotation axis Rx2.

[0036] The first fixing member 48 presses the first rotating table 6A toward the inner surface 46A to fix the first rotating table 6A in the rotation direction of the first rotating table 6A and in the direction along the first rotation axis Rx1. The first fixing member 48 restricts the rotation of the first rotating table 6A about the first rotation axis Rx1, and also restricts the oscillation of the first rotating table 6A in the ±Y directions along the first rotation axis Rx1. The second fixing member 50 presses the second rotating table 6B toward the inner surface 46A to fix the second rotating table 6B in the rotation direction of the second rotating table 6B and in the direction along the second rotation axis Rx2. The second fixing member 50 restricts the rotation of the second rotating table 6B about the second rotation axis Rx2, and also restricts the swing of the second rotating table 6B in the ±Y directions along the second rotation axis Rx2. In this embodiment, the first fixing member 48 and the second fixing member 50 are configured by toggle down clamps. However, the present invention is not limited to this, and the fixing members 48, 50 may have other configurations, or the fixing members 48, 50 may not be present.

[0037] The slide rail 51 is disposed along the Z axis at approximately the center of the inner surface 46A in the X axis. The slide rail 51 supports the operating lever 7, which will be described later, so that it can slide along the Z axis, and also guides the sliding of the operating lever 7 along the Z axis. In this embodiment, the slide rail 51 is provided as a configuration for guiding the sliding of the operating lever 7, but this is not limiting, and instead of the slide rail 51, a groove that engages with the operating lever 7 may be provided on the inner surface 46A along the Z axis.

[0038] [Configuration of the first turntable] Fig. 9 is a perspective view showing the first turntable 6A and the second turntable 6B as viewed from the -Y direction. Fig. 10 is a plan view of the first turntable 6A on which the first projector 2A is placed as viewed from the +Y direction, and Fig. 11 is a bottom view of the first turntable 6A on which the first projector 2A is placed as viewed from the -Y direction. The first rotating table 6A is supported by the first support portion 47 of the housing 4 so as to be rotatable around a first rotation axis Rx1. As shown in Fig. 9 and Fig. 11, the first rotating table 6A has a cylindrical portion 61, and also has a guide groove 62, an engagement protrusion 63, and a fixing portion 64, as shown in Figs.

[0039] 9 and 11, the cylindrical portion 61 protrudes in the -Y direction from approximately the center of the -Y direction surface of the first rotating table 6A. The cylindrical portion 61 is disposed so as to cover the first cylindrical support portion 471 when the first rotating table 6A is disposed on the first support portion 47. In other words, the first cylindrical support portion 471 is inserted inside the cylindrical portion 61. The first rotation axis Rx1 of the first rotating table 6A passes through approximately the center of the cylindrical portion 61 when viewed from the -Y direction and is an axis along the Y axis. 9, the cylindrical portion 61 has a plurality of protrusions 611. The plurality of protrusions 611 are portions that protrude in the -Y direction from the leading edge of the cylindrical portion 61, and three of them are provided at equal intervals on the leading edge of the cylindrical portion 61. The plurality of protrusions 611 come into contact with the inner surface 46A when the first turntable 6A is placed on the first support portion 47, thereby reducing the sliding resistance of the first turntable 6A.

[0040] As shown in Figs. 9 to 11, the guide groove 62 is an arc-shaped opening formed along a concentric circle centered on the first rotation axis Rx1, and three guide grooves 62 are provided on the first rotating table 6A. A two-stage screw SC is inserted into the guide groove 62 from the +Y direction. With the first rotating table 6A disposed on the first support part 47, the two-stage screw SC is fixed to a corresponding one of the three first fixing parts 472, whereby the first rotating table 6A is supported by the first support part 47 to be rotatable around the first rotation axis Rx1. In this way, when the first rotating table 6A is supported by the first support portion 47, each of the first rotating support portions 473 of the first support portion 47 comes into contact with the -Y direction surface of the first rotating table 6A.

[0041] The engagement protrusions 63 are provided on the +X direction end and the -X direction end of the first rotating table 6A, respectively. That is, the two engagement protrusions 63 include a first engagement protrusion 63A provided in the +X direction and a second engagement protrusion 63B provided in the -X direction. In the first rotating base 6A, the first engagement protrusion 63A is inserted from the +Y direction into a first connecting portion 711 (described later) of the operating lever 7. As a result, the first rotating base 6A and the operating lever 7 are connected to each other.

[0042] The first rotating table 6A is provided with three fixing parts 64. One of the three fixing parts 64 corresponds to the first fixing part, and the other corresponds to the second fixing part. The fixing portion 64 is a hole through which a fixing device FT is inserted from the -Y direction into the first projector 2A placed on the +Y direction surface of the first rotating table 6A. That is, the position adjustment device 3 is provided with three fixing devices FT that are provided in accordance with the fixing portion 64 and fix the first projector 2A and the first rotating table 6A. One of the three fixing devices FT corresponds to the first fixing device, and the other corresponds to the second fixing device. In this embodiment, the fixing device FT is a screw, and the first rotating table 6A and the first projector 2A are integrated by inserting the fixing device FT through the fixing portion 64 from the -Y direction and into a screw hole provided on the bottom surface of the first projector 2A. The screw hole provided on the bottom surface of the first projector 2A is a screw hole for fixing a fixture that fixes the first projector 2A to a metal fitting that supports the first projector 2A in a suspended state. That is, in this embodiment, the screw hole for fixing the metal fitting that supports the first projector 2A is shared with the screw hole for fixing the first rotating base 6A that is integrated with the first projector 2A.

[0043] [Configuration of the second turntable] The second rotating table 6B is supported by the second support part 49 so as to be rotatable around a second rotation axis Rx2 parallel to the first rotation axis Rx1. As shown in Fig. 9, the second rotating table 6B has a cylindrical part 61, a guide groove 62, an engagement protrusion 63 and a fixed part 64 which are the same as the cylindrical part 61, the guide groove 62, the engagement protrusion 63 and the fixed part 64 of the first rotating table 6A. In other words, the first rotating table 6A and the second rotating table 6B have the same configuration. In the second rotating table 6B, the second cylindrical support portion 491 of the second support portion 49 is inserted into the cylindrical portion 61 from the -Y direction, and the two-stage screw SC inserted into the second fixed portion 492 of the second support portion 49 is inserted into the guide groove 62 from the +Y direction. Furthermore, in the second rotating base 6B, of the engagement protrusions 63, a second engagement protrusion 63B in the -X direction is coupled to a second coupling portion 712 (described later) of the operation lever 7, and a fixture FT that fixes the second rotating base 6B to the second projector 2B is inserted into the fixing portion 64. The fixing portion 64 of the second rotating base 6B corresponds to the second fixing portion.

[0044] [Operation lever configuration] 7, the operating lever 7 is connected to the slide rail 51 and is provided on the inner surface 46A so as to be slidable along the Z axis. The connecting portion 71 extends along the X-axis and is connected to the slide rail 51. That is, the connecting portion 71 is provided on the inner surface 46A so as to be slidable in ±Z directions intersecting the connecting portion 71. The connecting portion 71 is connected to the first rotating table 6A and the second rotating table 6B. In detail, the connecting portion 71 includes a first connecting portion 711 connected to the first rotating table 6A and a second connecting portion 712 connected to the second rotating table 6B. The first connecting portion 711 is provided on a portion of the connecting portion 71 in the -X direction, and the second connecting portion 712 is provided on a portion of the connecting portion 71 in the +X direction. In this embodiment, each of the connecting portions 711, 712 is a slit extending along the X axis. The first engaging protrusion 63A of the first rotating table 6A is inserted into the first connecting portion 711, and the second engaging protrusion 63B of the second rotating table 6B is inserted into the second connecting portion 712. The grip portion 72 is a handle that is gripped by a user, and is provided on the connecting portion 71. The grip portion 72 protrudes from the connecting portion 71 in the +Y direction.

[0045] FIG. 12 shows the first rotating table 6A and the second rotating table 6B when the operating lever 7 is slid in the -Z direction. FIG. 12 is a diagram showing the rotation state of the rotating table 6B. That is, FIG. 12 shows the rotation state of the rotating table 6B when the operating lever 7 is slid in the -Z direction. 1 shows the rotational states of the first projector 2A and the second projector 2B when the projectors are slid. This is a diagram. When the operating lever 7 is slid in the -Z direction, the first rotating shaft connected to the first connecting portion 711 is rotated. The turntable 6A rotates clockwise when viewed from the +Y direction, and the second connecting portion 712 connected to the second The rotating table 6B is as follows when viewed from the +Y direction: anti Rotate clockwise. In this case, the projection direction of the first image light PL1 and the projection direction of the second image light PL2 are close to each other. Therefore, an image with a relatively small dimension in the X-axis is displayed on the projection surface.

[0046] Fig. 13 is a diagram showing the rotational states of the first rotary base 6A and the second rotary base 6B when the operation lever 7 is slid in the +Z direction. That is, Fig. 13 is a diagram showing the rotational states of the first projector 2A and the second projector 2B when the operation lever 7 is slid in the +Z direction. On the other hand, when the operating lever 7 is slid in the +Z direction, the first rotating table 6A connected by the first connection part 711 rotates counterclockwise when viewed from the +Y direction, and the second rotating table 6B connected by the second connection part 712 rotates clockwise when viewed from the +Y direction. In this case, since the projection direction of the first image light PL1 and the projection direction of the second image light PL2 are separated from each other, an image with a relatively large dimension in the X-axis is displayed on the projection surface. In this way, by sliding the operating lever 7 along the Z axis, the first rotating table 6A and the second rotating table 6B can be rotated synchronously in opposite directions, making it easy to adjust the size of the image on the projection surface.

[0047] Here, the first rotation axis Rx1 of the first rotating table 6A is not only parallel to the second rotation axis Rx2 of the second rotating table 6B, but is also set at a position where it intersects with the optical axis Ax1 of the projection optical device 28 of the first projector 2A inside the first projector 2A, as shown in Fig. 10. That is, when the first rotating table 6A is viewed along the first rotation axis Rx1, the first rotation axis Rx1 is disposed on the optical axis Ax1 of the projection optical device 28 of the first projector 2A and overlaps with the optical axis Ax1. To be more specific, the first rotation axis Rx1 is set at a position where it overlaps with the light combining element 275 of the first projector 2A, when the first rotating table 6A is viewed along the first rotation axis Rx1. Although not shown in the drawings, the second rotation axis Rx2 of the second rotary table 6B is also set at a position where it intersects with the optical axis Ax1 of the projection optical device 28 of the second projector 2B inside the second projector 2B. That is, when the second rotary table 6B is viewed along the second rotation axis Rx2, the second rotation axis Rx2 is disposed on the optical axis Ax1 of the projection optical device 28 of the second projector 2B and overlaps with the optical axis Ax1. To be more specific, the second rotation axis Rx2 is set at a position where it overlaps with the light combining element 275 of the second projector 2B when the second rotary table 6B is viewed along the second rotation axis Rx2. Therefore, when the first turntable 6A and the second turntable 6B are rotated by the same angle, the movement amount of the projection position of the first image light PL1 on the projection surface and the movement amount of the projection position of the second image light PL2 on the projection surface can be made to substantially match each other. This makes it easier to adjust the size of the image formed by the first image light and the second image light on the projection surface.

[0048] Fig. 14 is a perspective view showing a projector 2C of another model and a rotating base 8 corresponding to the projector 2C. Fig. 15 is a diagram showing the rotating base 8 as viewed from the -Y direction. Here, the model of the projector 2 fixed to the rotating base 6 is determined by the arrangement of the fixing portion 64. In other words, when a projector of a model different from the above is adopted as the projector integrated with the rotating base 6, a rotating base compatible with that projector is adopted. For example, instead of the projector 2 and the rotating base 6, a projector 2C and a rotating base 8 shown in Fig. 14 can be installed in the housing 4 of the position adjustment device 3. The rotating base 8 has a similar shape to the rotating base 6, and as shown in Fig. 15, has the same cylindrical portion 61, guide groove 62, engagement protrusion 63, and fixing portion 64 as the rotating base 6. However, the positions of the three fixing portions 64 on the rotating base 8 are different from the positions of the three fixing portions 64 on the rotating base 6. This is because the projector 2C is arranged and fixed at a predetermined position on the rotating base 8.

[0049] More specifically, in the rotating tables 6 and 8, the positions of multiple fixing portions 64 through which the fixing fixtures FT are inserted are determined to match the screw holes for fixing metal fittings provided on the bottom surface of the projector when the rotation axis of the rotating table intersects with the optical axis of the projection optical device 28 of the projector integrated with the rotating table inside the projector. 10, in the first rotating table 6A according to this embodiment, the positions of the multiple fixing parts 64 are defined to match the screw holes for fixing metal fittings provided on the bottom surface of the first projector 2A when the first rotation axis Rx1 of the first rotating table 6A is on the optical axis Ax1 of the projection optical device 28 of the first projector 2A and overlaps with the light combining element 275. The same is true for the second rotating table 6B and the rotating table 8. For this reason, when the first projector 2A is fixed to the first rotating table 6A by the multiple fixing parts 64, when viewed along the first rotation axis Rx1 of the first rotating table 6A, the first rotation axis Rx1 overlaps with the optical axis Ax1 of the projection optical device 28 of the first projector 2A and overlaps with the light combining element 275 of the first projector 2A. The same is true for the second rotating table 6B and the second projector 2B. Furthermore, when the projector 2C is fixed to the rotating table 8 by the multiple fixing parts 64, when viewed along the rotation axis of the rotating table 8, the rotation axis of the rotating table 8 overlaps with the optical axis Ax1 of the projection optical device 28 of the projector 2C and overlaps with the light combining element 275 of the projector 2C. By configuring the turntables 6, 8 in this manner and using the same model of projector for the two turntables used in the position adjustment device 3, when the turntables are rotated in opposite directions and by the same angle, as described above, the travel distance on the projection surface of the image light projected from each projector 2 can be made the same.

[0050] When replacing at least one of the first projector 2A and the second projector 2B, the projector to be replaced and the rotating base can be removed from the first support part 47 or the second support part 49 by removing the two-stage screw SC. At this time, the direction in which the two-stage screw SC is removed is the +Y direction, and the direction in which the projector to be replaced and the rotating base are removed is the +Y direction. Also, the top plate 451 constituting the top surface 45 can be removed in the +Y direction. Therefore, with the top plate 451 removed from the housing 4, the two-stage screw SC and the rotating base on which the projector to be replaced is placed can be accessed from the +Y direction and removed. Therefore, the projector replacement work can be easily performed.

[0051] [Effects of the embodiment] The projection system 1 according to the present embodiment described above provides the following advantages. The projection system 1 includes a first projector 2A that projects a first image light PL1, a second projector 2B that projects a second image light PL2, and a position adjustment device 3.

[0052] The position adjustment device 3 includes a housing 4, a first rotating table 6A and a second rotating table 6B. The housing 4 has a first space SP1 in which the first projector 2A is arranged, and a second space SP2 in which the second projector 2B is arranged. The first projector 2A is placed on the first rotary table 6A. The first rotary table 6A is supported by the housing 4 so as to be rotatable about a first rotation axis Rx1. The second projector 2B is placed on the second rotary table 6B. The second rotary table 6B is supported by the housing 4 so as to be rotatable about a second rotary axis Rx2 that is parallel to the first rotary axis Rx1. The housing 4 has a first opening 412 through which the first image light PL1 projected from the first projector 2A passes, and a second opening 413 through which the second image light PL2 projected from the second projector 2B passes. When the operating lever 7 is operated, the rotation directions of the first rotating table 6A and the second rotating table 6B are opposite to each other, and the rotation of the first rotating table 6A and the rotation of the second rotating table 6B are linked to each other. The first rotating table 6A and the second rotating table 6B are configured to be replaceable with respect to the housing 4.

[0053] According to such a configuration, the first rotating table 6A on which the first projector 2A is placed and the second rotating table 6B on which the second projector 2B is placed rotate in opposite directions in conjunction with each other, eliminating the need to individually adjust the projection positions of the image lights PL1, PL2 projected from each projector 2A, 2B. Therefore, the display positions of the images projected from each projector 2A, 2B and displayed on the projection surface can be easily adjusted, simplifying the adjustment work of the display positions. Furthermore, a projection system can be configured that allows the size of the display screen to be easily adjusted. Furthermore, by replacing the first rotary table 6A and the second rotary table 6B, different models of projectors can be arranged on the position adjustment device 3 as the first projector 2A and the second projector 2B.

[0054] The position adjustment device 3 includes a plurality of fixtures FT that fix the first projector 2A and the first rotating table 6A. Of the plurality of fixtures FT, one fixture FT corresponds to a first fixture, and the other fixture FT corresponds to a second fixture. The first rotating table 6A has a plurality of fixing portions 64 to which the first projector 2A is fixed by a fixing device FT. Of the plurality of fixing portions 64, one fixing portion 64 corresponds to a first fixing portion, and the other fixing portion 64 corresponds to a second fixing portion. Each fixing portion 64 is disposed at a position where the optical axis Ax1 of the projection optical device 28 that projects the first image light PL1 in the first projector 2A overlaps with the first rotation axis Rx1 when the first rotating table 6A is viewed along the first rotation axis Rx1. That is, each fixing portion 64 is disposed at a position where the optical axis Ax1 of the projection optical device 28 of the first projector 2A overlaps with the first rotation axis Rx1 when the first rotating table 6A is viewed from the +Y direction. The same applies to the fixing portion 64 and the fixing fixture FT of the second rotating table 6B.

[0055] According to this configuration, when the first turntable 6A and the second turntable 6B are rotated by the same angle, it is easy to align the movement amount of the projection position of the first image light PL1 on the projection surface and the movement amount of the projection position of the second image light PL2 on the projection surface. Therefore, it is easy to adjust the size of the image formed by the first image light PL1 and the second image light PL2 on the projection surface.

[0056] The position adjustment device 3 includes a plurality of fixtures FT that fix the first projector 2A and the first rotating table 6A. Of the plurality of fixtures FT, one fixture FT corresponds to a first fixture, and the other fixture FT corresponds to a second fixture. The first rotating table 6A has a plurality of fixing portions 64 to which the first projector is fixed by a fixing fixture FT. Of the plurality of fixing portions 64, one fixing portion 64 corresponds to a first fixing portion, and the other fixing portion 64 corresponds to a second fixing portion. Each fixed portion 64 is disposed at a position where, when the first rotating table 6A to which the first projector 2A is fixed is viewed along the first rotation axis Rx1, the first rotation axis Rx1 overlaps with a light combining element 275 that combines light emitted from a plurality of light modulation elements 273 in the first projector 2A. In other words, each fixed portion 64 is disposed at a position where, when the first rotating table 6A is viewed from the +Y direction, the first rotation axis Rx1 overlaps with the light combining element 275. The same applies to the fixing portion 64 and the fixing fixture FT of the second rotating table 6B.

[0057] According to this configuration, when the first turntable 6A and the second turntable 6B are rotated by the same angle, the movement amount of the projection position of the first image light PL1 on the projection surface and the movement amount of the projection position of the second image light PL2 on the projection surface can be made to substantially match each other. Therefore, it is possible to easily adjust the size of the image formed by the first image light PL1 and the second image light PL2 on the projection surface.

[0058] The position adjustment device 3 includes an operating lever 7 that is provided so as to be slidable by a user. The operating lever 7 rotates the first rotating table 6A and the second rotating table 6B in conjunction with each other. With this configuration, by operating the operation lever 7, the first rotating table 6A and the second rotating table 6B can be rotated in opposite directions in conjunction with each other, and the rotation angles of the first rotating table 6A and the second rotating table 6B can be easily aligned. Therefore, the display positions of the images related to each image light can be easily adjusted.

[0059] In the position adjustment device 3, the operating lever 7 has a connecting portion 71 and a grip portion 72. The connecting portion 71 is connected to the first rotating table 6A and the second rotating table 6B. The connecting portion 71 is provided on the housing 4 so as to be slidable in ±Z directions intersecting with the connecting portion 71. The connecting portion 71 is provided with a grip portion 72. The grip portion 72 is a portion that is gripped by the user. According to this configuration, the user can rotate the first rotating table 6A and the second rotating table 6B simultaneously and in conjunction with each other by gripping the grip portion 72 and sliding the operation lever 7. Therefore, the first rotating table 6A and the second rotating table 6B can be easily rotated, and further, the display positions of the images related to each image light can be easily adjusted.

[0060] In the position adjustment device 3, by removing the first rear portion 422 from the housing 4, the operating lever 7 is arranged to be operable from the rear side 42 opposite the front side 41 on which the first opening 412 and the second opening 413 are provided in the housing 4. According to such a configuration, the user can operate the operating lever 7 without blocking the first image light PL1 and the second image light PL2 projected onto the projection surface. This allows the user to adjust the projection positions of each image light by operating the operating lever 7 while checking the projection positions of the first image light PL1 and the second image light PL2 on the projection surface. Therefore, the display positions of the images related to each image light can be easily adjusted.

[0061] In the position adjustment device 3, the housing 4 is configured so that the first projector 2A and the first rotating base 6A, and the second projector 2B and the second rotating base 6B can be removed from the top surface 45 side of the housing 4. That is, a top plate 451 constituting the top surface 45 of the housing 4 is detachable from the housing 4, and double-step screws SC that attach the rotating bases 6A, 6B to the housing 4 are inserted into the respective fixing portions 472, 492 of the housing 4 from the +Y direction, which is the top surface 45 side. According to such a configuration, it is possible to easily attach and detach the first rotating base 6A on which the first projector 2A is arranged, and the second rotating base 6B on which the second projector 2B is arranged, to the housing 4. Therefore, it is possible to easily perform the replacement work of the projectors 2A, 2B and the rotating bases 6A, 6B.

[0062] The position adjustment device 3 includes a first fixing member 48 and a second fixing member 50 . The first fixing member 48 fixes the first rotating table 6A in the rotational direction of the first rotating table 6A and in the direction along the first rotation axis Rx1. The second fixing member 50 fixes the second rotating table 6B in the rotational direction of the second rotating table 6B and in the direction along the second rotation axis Rx2. According to such a configuration, since the first rotary table 6A and the second rotary table 6B can be fixed after the position adjustment, the positions of the projectors 2A, 2B can be fixed, and therefore the projection position of the image on the projection surface can be fixed.

[0063] In the position adjustment device 3, the housing 4 has a partition wall 4511 that partitions the first space SP1 and the second space SP2. According to such a configuration, it is possible to prevent the heat of the projector 2 arranged in one of the first space SP1 and the second space SP2 from affecting the projector 2 arranged in the other space.

[0064] In the position adjustment device 3, the housing 4 has a first inlet 431, a first outlet 452, a second inlet 424 and a second outlet 441. The first inlet 431 communicates between the first space SP1 and the outside of the housing 4, and introduces gas from the outside of the housing 4 into the first space SP1. The first outlet 452 communicates between the first space SP1 and the outside of the housing 4, and exhausts gas in the first space SP1 to the outside of the housing 4. The second inlet 424 communicates between the second space SP2 and the outside of the housing 4, and introduces gas from outside the housing 4 into the second space SP2. The second outlet 441 communicates between the second space SP2 and the outside of the housing 4, and exhausts gas in the second space SP2 to the outside of the housing 4.

[0065] According to such a configuration, the gas flow system that flows through the first space SP1 in which the first projector 2A is arranged and the gas flow system that flows through the second space SP2 in which the second projector 2B is arranged can be made independent of each other. Therefore, it is possible to prevent the heat of the gas flowing through one of the first space SP1 and the second space SP2 from affecting the gas flowing through the other space. Therefore, it is possible to efficiently cool each of the projectors 2A and 2B.

[0066] In the position adjustment device 3, the first exhaust port 452 is provided at a position on the second space SP2 side on the top surface 45 of the housing 4. The housing 4 has a guide wall 411 that is disposed between the first opening 412 and the second opening 413 and guides the gas in the first space SP1 to the first exhaust port 452. According to such a configuration, even when exhaust gas from the first projector 2A flows toward the second space SP2, the guide wall 411 can guide the exhaust gas to the first exhaust port 452. Therefore, it is possible to prevent the exhaust gas from the first projector 2A from circulating in the second space SP2 and affecting the second projector 2B arranged in the second space SP2.

[0067] [Modifications of the embodiment] The present disclosure is not limited to the above-described embodiments, and modifications and improvements within the scope that can achieve the object of the present disclosure are included in the present disclosure. In the above embodiment, in the position adjustment device 3, the first opening 412 and the second opening 413 are separated in the X-axis direction by the guide wall 411. However, this is not limited thereto, and the first opening 412 and the second opening 413 may be one continuous opening. In other words, the first opening 412 and the second opening 413 may be a partial area of ​​one opening. According to such a configuration, there is no need to provide a member such as the guide wall 411 that separates the first opening 412 and the second opening 413. Therefore, the configuration of the housing 4, and therefore the configuration of the position adjustment device 3, can be simplified. In addition, when the first opening 412 and the second opening 413 are a partial area of ​​one opening, the guide wall 411 may be omitted. On the other hand, if the exhaust gas from the projector 2 can be guided without separating the first opening 412 and the second opening 413, the guide wall may be provided in the housing 4.

[0068] In the above embodiment, the position adjustment device 3 includes the first fixing member 48 that fixes the first rotating table 6A and the second fixing member 50 that fixes the second rotating table 6B. However, the position adjustment device 3 may include a fixing member that fixes the operating lever 7 that is slidable along the Z axis instead of the first fixing member 48 and the second fixing member 50, or in addition to the first fixing member 48 and the second fixing member 50. In detail, the position adjustment device 3 may include a fixing member that fixes the operating lever 7 in the sliding direction of the operating lever 7. According to such a configuration, the position of the operating lever 7 can be fixed, and therefore the first rotating base 6A and the second rotating base 6B rotated by the operating lever 7 can be fixed. Therefore, the positions of the projectors 2A, 2B can be fixed, and further, the projection positions of the images on the projection surface can be fixed.

[0069] In the above embodiment, the first rotation axis Rx1 of the first turntable 6A is an axis that intersects with the optical axis Ax1 of the projection optical device 28 of the first projector 2A placed on the first turntable 6A and is parallel to the Y axis. In more detail, the first rotation axis Rx1 is set at a position that overlaps with the light combining element 275 of the first projector 2A when viewed along the first rotation axis Rx1. However, the present invention is not limited to this, and when viewed along the first rotation axis Rx1, the first rotation axis Rx1 does not have to overlap with the optical axis Ax1 of the projection optical device 28, and does not have to overlap with the light combining element 275. Even when the first rotation axis Rx1 overlaps with the optical axis Ax1, the first rotation axis Rx1 does not have to completely overlap with the optical axis Ax1. In other words, when viewed along the first rotation axis Rx1, the first rotation axis Rx1 may be set at a position that appears to overlap with the optical axis Ax1. Furthermore, when viewed along the first rotation axis Rx1, the first rotation axis Rx1 does not have to overlap with the light combining element 275, and even if it overlaps with the light combining element 275, it does not have to overlap with the optical axis Ax1 of the projection optical device . The same applies to the second rotation axis Rx2.

[0070] In the above embodiment, the fixing portion 64 of the rotating bases 6, 8 is a hole through which the fastener FT, which is a screw for fixing to the projector 2, is inserted. However, the present invention is not limited to this, and the configuration of the fixing portion 64 is not limited to the above as long as it can fix the projector 2. Furthermore, the fixing unit 64 may be configured to be able to fix the projector 2 placed on the rotating tables 6, 8 at any position.

[0071] In the above embodiment, the control lever 7 is provided to link the rotation of the first rotating table 6A and the rotation of the second rotating table 6B. However, the present invention is not limited to this, and may be configured to include, for example, a dial, a first gear that rotates in response to a rotation operation of the dial, and a second gear that meshes with the first gear. In this case, one of the first gear and the second gear meshes with the first rotating table 6A and the other gear meshes with the second rotating table 6B, so that the rotating tables 6A and 6B can be linked and rotated in opposite directions to each other in response to the rotation operation of the dial.

[0072] In the above embodiment, the operating lever 7 is operable from the rear surface 42 by removing the first rear surface portion 422 from the housing 4. However, this is not limiting, and the operating lever 7 may be operable from the rear surface 42 by removing the second rear surface portion 423 from the housing 4. Further, the direction in which the operating lever 7 can be operated is not limited to the rear surface 42 side, but may be the front surface 41 side, the top surface 45 side, or another direction.

[0073] In the above embodiment, the housing 4 has a partition wall 4511 that partitions the space inside the housing 4 into the first space SP1 and the second space SP2. However, this is not limiting, and the partition wall 4511 may be omitted. Furthermore, the partition wall 4511 may be provided on a structure other than the top plate 451. Furthermore, the top plate 451 may not be provided, and the top surface 45 may not cover the first space SP1 and the second space SP2 in the +Y direction. In the above embodiment, the housing 4 includes the guide wall 411 that guides the gas in the first space SP1 to the first exhaust port 452. However, this is not limiting, and the guide wall 411 may be omitted. In addition, the guide wall does not have to be provided on the front surface 41, and may be disposed inside the housing 4.

[0074] In the above embodiment, the housing 4 is configured so that the first rotating platform 6A on which the first projector 2A is placed and the second rotating platform 6B on which the second projector 2B is placed can be removed from the top surface 45 side. However, this is not limited to the above, and the housing 4 may be configured so that the projectors 2A, 2B and the rotating platforms 6A, 6B can be removed in other directions. For example, the housing 4 may be configured so that the projectors 2A, 2B and the rotating platforms 6A, 6B can be removed from the rear surface 42 side.

[0075] In the above embodiment, the first inlet 431 and the first outlet 452 are provided for the first space SP1, and the second inlet 424 and the second outlet 441 are provided for the second space SP2. However, the present invention is not limited to this, and the number and arrangement of the inlets for introducing the gas outside the housing 4 into the inside of the housing 4 can be changed as appropriate, and the number and arrangement of the outlets for discharging the gas inside the housing 4 to the outside of the housing 4 can be changed as appropriate. For example, when the housing 4 is provided with one inlet, the gas introduced from the inlet may be divided into the first space SP1 and the second space SP2. Also, for example, when the housing 4 is provided with one outlet, the gas in the first space SP1 and the gas in the second space SP2 may be merged and discharged to the outside of the housing 4 through the outlet.

[0076] In the above embodiment, the projector 2 includes three light modulation elements 273B, 273G, and 273R. However, the present disclosure is not limited to this, and can also be applied to a projector including two or less light modulation elements 273, or four or more light modulation elements 273. In the above embodiment, the image projection device 22 has a substantially L-shaped optical path as shown in Fig. 2. However, the present invention is not limited to this, and the image projection device 22 may have, for example, a substantially U-shaped optical path.

[0077] In the above embodiment, the light modulation element 273 is configured by a transmissive liquid crystal panel having different light entrance and exit surfaces, but may be configured by a reflective liquid crystal panel having the same light entrance and exit surfaces. Also, the light modulation element 273 may be a light modulation element other than liquid crystal, such as a device using a micromirror, for example, a DMD (Digital Micromirror Device), etc., as long as it is a light modulation element capable of modulating an incident light beam to form an image according to image information.

[0078] In the above embodiment, the first turntable 6A and the second turntable 6B are configured to be replaceable with respect to the housing 4. However, this is not limited thereto, and the turntable 6 may be supported by the housing 4 in a rotatable but non-replaceable manner.

[0079] [Summary of this disclosure] The following is a summary of this disclosure. [Appendix 1] a housing having a first space in which a first projector is disposed and a second space in which a second projector is disposed; a first rotation stage on which the first projector is placed and which is supported by the housing so as to be rotatable about a first rotation axis; a second rotation table on which the second projector is placed and which is supported by the housing so as to be rotatable around a second rotation axis parallel to the first rotation axis; The housing includes: a first opening through which a first image light projected from the first projector passes; a second opening through which second image light projected from the second projector passes; The first turntable and the second turntable have opposite rotation directions, A position adjustment device, characterized in that the rotation of the first rotary table and the rotation of the second rotary table are linked to each other.

[0080] With this configuration, the first rotating platform on which the first projector is placed and the second rotating platform on which the second projector is placed rotate in opposite directions in unison, eliminating the need to individually adjust the projection positions of images projected from each projector. Therefore, the display positions of images projected from each projector and displayed on the projection surface can be easily adjusted, simplifying the work of adjusting the display positions.

[0081] [Appendix 2] 2. The position adjustment device according to claim 1, a first fixture and a second fixture that fix the first projector and the first rotating table, The first turntable is a first fixing portion to which the first projector is fixed by the first fixing device; a second fixing portion to which the first projector is fixed by the second fixing device; a position adjustment device characterized in that the first fixing portion and the second fixing portion are arranged at a position where, when the first rotating table to which the first projector is fixed is viewed along the first rotation axis, an optical axis of a projection optical device that projects the first image light in the first projector overlaps with the first rotation axis.

[0082] According to this configuration, when the first and second rotating tables are rotated by the same angle, the amount of movement of the projection position of the first image light on the projection surface and the amount of movement of the projection position of the second image light on the projection surface can be easily aligned, which makes it easier to adjust the size of the image formed by the first and second image light on the projection surface.

[0083] [Appendix 3] 2. The position adjustment device according to claim 1, a first fixture and a second fixture that fix the first projector and the first rotating table, The first turntable is a first fixing portion to which the first projector is fixed by the first fixing device; a second fixing portion to which the first projector is fixed by the second fixing device; a position adjustment device characterized in that the first fixing portion and the second fixing portion are arranged at a position where, when the first rotating table to which the first projector is fixed is viewed along the first rotation axis, the first rotation axis overlaps with a light combining element that combines light emitted from multiple light modulation elements in the first projector.

[0084] According to this configuration, when the first and second rotating tables are rotated by the same angle, the amount of movement of the projection position of the first image light on the projection surface can be made to substantially match the amount of movement of the projection position of the second image light on the projection surface, which makes it easier to adjust the size of the image formed by the first and second image light on the projection surface.

[0085] [Appendix 4] In the position adjustment device according to any one of Supplementary Note 1 to Supplementary Note 3, A position adjustment device further comprising an operating lever that is slidable by a user and rotates the first rotating table and the second rotating table in conjunction with each other. With this configuration, by operating the operating lever, the first and second rotating tables can be rotated in opposite directions in conjunction with each other, and the rotation angles of the first and second rotating tables can be easily aligned, making it easy to adjust the display positions of the images related to each image light.

[0086] [Appendix 5] 5. The position adjustment device according to claim 4, The operating lever is A grip portion to be gripped by the user; a connecting portion provided with the gripping portion and connected to the first rotating table and the second rotating table; The position adjustment device, wherein the connecting portion is provided on the housing so as to be slidable in a direction intersecting the connecting portion. With this configuration, the user can rotate the first and second rotating tables simultaneously and in conjunction with each other by gripping the grip and sliding the operation lever. Therefore, the first and second rotating tables can be easily rotated, and further, the display positions of the images related to each image light can be easily adjusted.

[0087] [Appendix 6] In the position adjustment device according to claim 4 or 5, A position adjustment device, characterized in that the operating lever is arranged so as to be operable from a surface of the housing opposite to a surface on which the first opening and the second opening are provided. According to this configuration, the user can operate the operating lever without blocking the first image light and the second image light projected onto the projection surface. This allows the user to adjust the projection positions of the first image light and the second image light by operating the operating lever while checking the projection positions of the first image light and the second image light on the projection surface. Therefore, the display positions of the images related to the image lights can be easily adjusted.

[0088] [Appendix 7] 7. The position adjustment device according to claim 1, a first fixing member that fixes the first rotating table in a rotation direction of the first rotating table and in a direction along the first rotation axis; a second fixing member that fixes the second rotating table in a rotation direction of the second rotating table and in a direction along the second rotation axis. According to such a configuration, since the first and second rotary tables can be fixed after their positions are adjusted, the positions of the projectors can be fixed, and therefore the projection positions of the images on the projection surface can be fixed.

[0089] [Appendix 8] In the position adjustment device according to any one of Supplementary Note 4 to Supplementary Note 6, 4. A position adjustment device according to claim 3, further comprising a fixing member for fixing the operating lever in a sliding direction of the operating lever. According to this configuration, the position of the operating lever can be fixed, and therefore the first and second rotating tables rotated by the operating lever can be fixed, and therefore the position of each projector can be fixed, and thus the projection position of the image on the projection surface can be fixed.

[0090] [Appendix 9] 9. The position adjustment device according to claim 1, The position adjustment device, wherein the housing has a partition wall that partitions the first space and the second space. With this configuration, it is possible to prevent the heat of the projector placed in one of the first and second spaces from affecting the projector placed in the other space.

[0091] [Appendix 10] 10. The position adjustment device according to claim 1, The housing includes: a first inlet port that communicates the first space with the outside of the housing and introduces gas from the outside of the housing into the first space; a first exhaust port that connects the first space with the outside of the housing and exhausts gas in the first space to the outside of the housing; a second inlet port that communicates the second space with the outside of the housing and introduces gas from the outside of the housing into the second space; a second exhaust port that connects the second space with the outside of the housing and exhausts gas in the second space to the outside of the housing.

[0092] With this configuration, the gas flow system through the first space where the first projector is disposed and the gas flow system through the second space where the second projector is disposed can be made independent of each other. This makes it possible to prevent the heat of the gas flowing through one of the first and second spaces from affecting the gas flowing through the other space. As a result, each projector can be cooled efficiently.

[0093] [Appendix 11] 11. The position adjustment device according to claim 10, The first exhaust port is provided on a top surface of the housing at a position on the second space side, A position adjustment device, characterized in that the housing is disposed between the first opening and the second opening and has a guide wall that guides gas in the first space to the first exhaust outlet. With this configuration, for example, even when exhaust gas from the first projector flows toward the second space, the guide wall can guide the exhaust gas to the first exhaust port. Therefore, it is possible to prevent the exhaust gas from the first projector from circulating in the second space and affecting the second projector arranged in the second space.

[0094] [Appendix 12] 12. The position adjustment device according to claim 1, A position adjustment device, wherein the first opening and the second opening are each a partial area of ​​one opening. According to such a configuration, since there is no need to provide a member that separates the first opening and the second opening, the configuration of the housing, and therefore the configuration of the position adjustment device, can be simplified.

[0095] [Appendix 13] a first projector that projects a first image light; a second projector that projects a second image light; 13. A projection system comprising: a position adjustment device according to any one of claims 1 to 12. According to such a configuration, it is possible to obtain the same effect as the position adjustment device described above, and in addition, it is possible to configure a projection system in which the size of the display screen can be easily adjusted. [Explanation of symbols]

[0096] 1...projection system, 2...projector, 2A...first projector, 2B...second projector, 273...light modulation element, 275...light combining element, 28...projection optical device, 3...position adjustment device, 4...housing, 41...front, 411...guide wall, 412...first opening, 413...second opening, 42...rear, 424...second inlet, 43...right side, 431...first inlet, 44...left side, 441...second outlet, 45...top, 451...top plate, 4511...partition wall, 452...first outlet Mouth, 46...bottom surface, 47...first support portion, 48...first fixing member, 49...second support portion, 50...second fixing member, 51...slide rail, 6, 8...rotating table, 6A...first rotating table, 6B...second rotating table, 61...cylindrical portion, 62...guide groove, 63...engaging protrusion, 64...fixing portion (first fixing device, second fixing portion), 7...operating lever, 71...connecting portion, 711...first connecting portion, 712...second connecting portion, 72...grip portion, FT...fixing device (first fixing device, second fixing device), PL1...image light, PL2...image light, SC...two-stage screw.

Claims

1. A first space in which the first projector is disposed, and a second space in which the second projector is disposed A housing having two spaces; The first projector is mounted on the housing so as to be rotatable about a first rotation axis. a first turntable supported by the first rotating base; The second projector is mounted and rotates about a second rotation axis parallel to the first rotation axis. a second turntable movably supported by the housing; A rotating member that is slidable by a user and interlocks the first rotating table with the second rotating table. and an operating lever for rotating the The housing includes: a first opening through which a first image light projected from the first projector passes; a second opening through which second image light projected from the second projector passes; a rotation direction of the first turntable and a rotation direction of the second turntable are opposite to each other, The rotation of the first rotary table and the rotation of the second rotary table are linked to each other, The operating lever is A grip portion to be gripped by the user; a connecting portion provided with the gripping portion and connected to the first rotating table and the second rotating table; Has The connecting portion is provided on the housing so as to be slidable in a direction intersecting the connecting portion. The characteristic feature is that Position adjustment device.

2. 2. The position adjustment device according to claim 1, A first fixture and a second fixture that fix the first projector and the first rotating table are updated. In preparation for The first turntable is a first fixing portion to which the first projector is fixed by the first fixing device; a second fixing portion to which the first projector is fixed by the second fixing device; The first fixing portion and the second fixing portion are fixed to the first projector. When the rotary table is viewed along the first rotation axis, the first image light is projected from the first projector. and a projection optical device for projecting the first rotation axis is disposed at a position where the optical axis of the projection optical device overlaps with the first rotation axis. A position adjustment device comprising:

3. 2. The position adjustment device according to claim 1, A first fixture and a second fixture that fix the first projector and the first rotating table are updated. In preparation for The first rotating table is a first rotating table to which the first projector is fixed by the first fixing device. A fixed portion; a second fixing portion to which the first projector is fixed by the second fixing device; The first fixing portion and the second fixing portion are fixed to the first projector. When the rotary table is viewed along the first rotation axis, the first rotation axis is The light modulator is disposed at a position overlapping with a light combining element that combines the light emitted from the plurality of light modulation elements. A position adjustment device comprising:

4. 2. The position adjustment device according to claim 1, The operating lever is provided with the first opening and the second opening in the housing. a position adjustment device arranged so as to be operable from a surface opposite to the surface on which the position adjustment device is attached, 。

5. The position adjustment device according to any one of claims 1 to 3, The first rotating table is fixed in the rotation direction of the first rotating table and in the direction along the first rotation axis. A first fixing member for fixing the The second rotating table is fixed in the rotation direction of the second rotating table and in the direction along the second rotation axis. and a second fixing member for fixing the position of the first fixing member to the first fixing member.

6. In the position adjustment device according to claim 1 , The lever may further include a fixing member that fixes the operating lever in a sliding direction of the operating lever. A position adjustment device comprising:

7. The position adjustment device according to any one of claims 1 to 3, the housing has a partition wall that partitions the first space and the second space. A position adjustment device.

8. The position adjustment device according to any one of claims 1 to 3, The housing includes: The first space is in communication with the outside of the housing, and gas outside the housing is introduced into the A first inlet for introducing the gas into the first space; The first space is in communication with the outside of the housing, and gas in the first space is circulated through the housing. a first outlet for discharging the waste water to the outside of the casing; The second space is in communication with the outside of the housing, and gas outside the housing is introduced into the A second inlet for introducing the gas into the second space; The second space is in communication with the outside of the housing, and gas in the second space is circulated through the housing. and a second discharge port for discharging the liquid to the outside of the position adjustment device.

9. 9. The position adjustment device according to claim 8, The first exhaust port is provided in a region of the top surface of the housing that corresponds to the first space. and is provided at a position on the second space side in the region, The housing is disposed between the first opening and the second opening, and the first space a guide wall for guiding gas inside the position adjustment device to the first exhaust port.

10. The position adjustment device according to any one of claims 1 to 3, Each of the first opening and the second opening is a partial area of ​​one opening. A position adjustment device comprising:

11. a first projector that projects a first image light; a second projector that projects second image light; The position adjustment device according to any one of claims 1 to 3, A projection system.

Images