JP2001272724A - Projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the setting of plural projectors for simultaneously projecting pictures on one screen. SOLUTION: Two projecting means 20R and 20L are assembled as one projector. Then, the projector is equipped with a driving means constituted of motor- driven stages 25 and 29 moving the lens barrels 21 and 22 of the projecting means 20R and 20L in a right-and-left direction and motor-driven stages 27 and 31 moving the lens barrels 21 and 22 in an up-and-down direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to LCDs and DLPs.
The present invention relates to a projector for optically projecting a display image formed by, for example, such a method.

[0002]

2. Description of the Related Art As is widely known, projectors are widely known as LCDs (liquid crystal plates) or DLPs (Digital Lithography).
The image to be projected is displayed by a display member such as “gh processing”.

The display member transmits or reflects light from a light source to guide the display image as image light to a projection lens (projection optical system), and the projection lens projects the image on a screen.

As for the projection of such a projector, a projection technique for simultaneously projecting two or three projectors on one screen has been performed.

[0005] That is, a projector having an LCD as a display member has a problem that light from a light source passes through the LCD.
The brightness of the projection on the screen is insufficient.

Therefore, by projecting two or three projectors simultaneously and projecting the same image on one screen, the brightness of the projected image is doubled.
A so-called composite screen projection is performed.

FIG. 9 shows an example of this projection technique, wherein 11 and 12 are projectors, 13 is a screen,
Reference numeral 14 denotes a projection image of the composite screen. In the projection technique using a plurality of projectors as described above, for example, a projection of a so-called continuous screen, in which the projection image of the projector 11 and the projection image of the projector 12 are continuously projected vertically or horizontally, or a predetermined A so-called separate screen is projected at intervals of.

[0008]

As described above, projection techniques such as a composite screen, a continuous screen, and a separate screen are performed using a plurality of projectors. Also, a setting operation for changing the projection direction, image magnification, etc. of each projector is required.

In other words, the projection direction of each projector is changed up and down, left and right in accordance with a composite screen, a continuous screen, and a separate screen to be projected, and manual setting work is required to adjust the image magnification. Required.

[0010] In particular, in the projection of a composite screen, a set operation of fine adjustment is required in order to match a plurality of projection images, and this set operation requires skill and takes time.

An object of the present invention is to provide a projector in which setting can be made as simple as possible in various screen projection techniques in view of the above-mentioned circumstances.

[0012]

According to the present invention, there is provided a projector for optically projecting a display image of a display device, comprising at least a light source, a display device, and a projection optical system. Multiple projection means,
The present invention proposes a projector provided with each of these projection means and comprising a driving means for moving the projection optical system in the vertical and / or horizontal directions.

The projector according to the present invention has a single projector configuration including a plurality of projection means and a driving means for moving a projection optical system of each projection means.
As a result, setting of various screen projections can be easily performed by manually controlling and automatically controlling the driving means.

The projector according to the present invention is provided with a control means for calculating a preset set value or a predetermined set value, operating the drive means in accordance with the operation signal, and moving the projection optical system. Can be controlled.

The control means includes a screen selection means, so that a composite screen, a continuous screen, a separation
The screen projection set is automated.

[0016]

Next, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 shows projector-2
FIG. 2 is a schematic configuration diagram showing a basic example of 0, wherein 21 is a lens barrel on the right side of the screen, and 22 is a lens barrel on the left side in the same direction.

These lens barrels 21 and 22 have zoom lenses of projection lenses 23 and 24 and a focus adjustment mechanism. In this embodiment, zooming and focusing are performed manually. Each of the lens barrels 21 and 22 includes a detection device that detects the amount of movement of the projection lenses 23 and 24 when zooming and focusing are performed.

Reference numeral 25 denotes a stage which is driven by a motor 26 and moves in the left-right direction, on which a lens barrel 21 is mounted. Reference numeral 27 denotes a stage for vertical movement, which receives a driving force from a motor 28 and moves the lens barrel 21 together with the stage 25 in the vertical direction.

The above-mentioned lens barrel 21, stage 25, 2
7. The motors 26 and 28 constitute the projection means 20R on the right side of the screen. The left projection unit 20L has the same configuration.

That is, reference numeral 29 denotes a stage which is driven by the motor 30 and moves in the left-right direction. The stage 29 has the lens barrel 22 mounted thereon. This is a stage for moving the lens barrel 22 in the vertical direction together with the stage 29 for receiving the image.

The two projection means 20L and 20R arranged on the left and right as described above are assembled as one projector-20. FIG. 2 is a block diagram showing the overall configuration of the projector 20 configured as described above.

As shown, the projection means 20R is provided with an optical engine 33, a lamp box 34 having a light source, a power supply 35, a display member (LCD, DLP, etc.) 37 for forming an image by the image circuit 36, and the like. .

The same applies to the projection means 20L, which includes an optical engine 38, a lamp box 39, a power supply 40, and an image circuit 4.
1, a display member 42 and the like.

The projector 20 has detectors 43 and 44 for detecting the amount of movement of the projection lenses 23 and 24.
Is provided. The detection device 43 detects the amount of movement of the projection lens 23 by the zooming and focusing of the projection means 20R, and detects detection signals Zs, Fs (Zs: zoom signal,
Fs: focus signal) to the controller 45.

Similarly, the detecting device 44 detects the amount of movement of the projection lens 24 by the zooming and focusing of the projection means 20L, and sends the detection signals Zs and Fs to the controller 45. .

The controller 45 includes detection devices 43 and 44.
The shift data of the lens barrels 21 and 22 are calculated based on the detection signals Zs and Fs sent from the
The motors 28, 26, 30, and 32 are driven and controlled according to the motor. The controller 45 includes the lens barrel 21,
22 are stored, and shift data is calculated from the data and the detection signals Zs and Fs.

Therefore, the stage 2 of the projection means 20R
The operation of steps 5 and 27 causes the lens barrel 21 to move up and down and / or left and right.
The lens barrel 22 is similarly moved by the operations 9 and 31, and the projection preparation of the projector 20 is set.

The operation section 46 has a selection button for a composite screen, a continuous screen, a separate screen and the like in addition to the start switch button, and the controller 45 responds to the operation signal of the screen selection button by the controller 45. The lens barrels 21 and 22 are moved to switch the screen. The operation section 46 is provided with operation buttons for motor driving each stage according to manual operation.

Next, the operation of the projector 20 will be described. First, when projecting a composite screen, control is performed by the image circuits 36 and 41 so that required images are formed on the display members 37 and 42.

Then, the power supplies 35 and 40 are turned on, and the light of the light source is emitted through the optical engines 33 and 38. In this state, the projection lenses 23 and 24 are manually moved to perform zooming and focusing.

In this operation, the detection signals Zs and Fs are input from the detection devices 43 and 44 to the controller 45. In addition, the selection screen signal of the synthesis screen is controlled by the operation unit 46.
Input into the box 45. Accordingly, the controller 45 calculates shift data of the lens barrels 21 and 22 based on the detection signals Zs and Fs and the selection screen signal, and calculates the shift data.
The motors 26, 28, 30, and 32 are driven and controlled according to the motor.

As a result, the lens barrel 21 of the projection means 20R moves up and down and / or left and right by the operation of the stages 25 and 27, and is shifted to a position suitable for the composite screen. The lens barrel 22 of the projection means 20L also has a stage 29,
In the same way, the operation 31 moves to shift to a position suitable for the composite screen.

The projection preparation is set by shifting the lens barrels 21 and 22 in this manner.
It is projected as shown in. In FIG. 3, 47
Indicates a screen, and 48 indicates a synthesized projection image. Also,
Fine adjustment of focus and fine adjustment of magnification
24 can be operated manually.

In the case of projecting a continuous screen, a selection screen signal for the continuous screen is transmitted to the controller 4 by the operation unit 46.
5 is input. The controller 45 receives the detection signals Zs and Fs in the same manner as described above,
The shift data of the continuous screen is calculated based on s and Fs and the selection screen signal.

Accordingly, the motors 26, 28, 30, and 32 are driven and controlled in accordance with the shift data, and the lens barrels 21 and 22 are shifted to positions suitable for projecting a continuous screen.

FIG. 4 shows the projection images 48a and 48b when the projection is prepared as described above. In the projection example, the screen image formed on the display member 42 is changed.

When projecting a separate screen,
The selection screen signal of the separation screen is input to the controller 45 by the operation unit 46. Thus, the controller 45 calculates the shift data necessary for the projection of the separate screen in the same manner as described above, and controls the driving of the motors 26, 28, 30, 32 according to the shift data.

As a result, since the lens barrels 21 and 22 are shifted to positions suitable for projection of the separate screen, the projection images 48a and 48b are projected at predetermined intervals as shown in FIG.

FIG. 6 is a front view of a projector 20 showing a specific embodiment of the present invention, and FIG.
FIG. In these drawings, FIG.
The same components and parts as those shown in FIG. 2 are denoted by the same reference numerals, and the description of the operations will be omitted.

As shown in the figure, in this embodiment, the detecting device 43 is an optical encoder-4 for zooming detection.
3a and an optical encoder-4 for detecting focusing
3b, and the detection device 44 is also constituted by encoders 44a and 44b.

Also, the stages 25 and 29 drive the lens barrels 21 and 22 in the left and right direction by a structure in which the lens barrels 21 and 22 are bolted by a screw rod, and the stages 27 and 31 are linked by a bolt feed by a screw rod. A mechanism is provided, and the lens barrels 21 and 22 are vertically motor-driven by this interlocking mechanism.

Further, the lens barrels 21 and 22 are configured to be extended and retracted by a front group extending system. In addition, in these drawings, 49 is a gonio stage,
50 denotes a unit box, and 51 denotes an exhaust fan.

FIG. 8 is a block diagram showing another embodiment. The projector of this embodiment includes a magnification setting circuit 5
2 and a distance measuring circuit 53, and a zoom signal Zs and a focus signal Fs are input to the controller 45 from these circuits. The projection lenses 23 and 24 are driven by a motor under command control of a controller 45 to perform zooming and focusing.

A brightness detection circuit 54 is provided, and the controller 45 operates one of the projection means 20R and 20L in a bright environment in accordance with the brightness signal input from the detection circuit 54, and performs a projection in a dark environment. Means 20R, 2
0L is simultaneously projected.

Further, a manual adjustment detection circuit 55 is provided. The detection circuit 55 inputs the manually adjusted zooming amount and focusing amount to the controller 45, and outputs the result to the lens barrel 2.
This is for calculating the shift amounts of 1, 22.

The projector 20 having the two projection means 20R and 20L has been described above. However, the number of projection means can be increased. Further, the shift data of the lens barrels 21 and 22 was calculated by the controller 45, but the data was not calculated.
Can be changed.

[0047]

As described above, according to the present invention, a single projector having a plurality of projection means is provided, and each projection means is provided with a driving means for moving the projection optical system. Thus, the shift of the projection optical system can be automated.

In the case of projecting a composite screen, a continuous screen, a separate screen, etc., the screen can be easily switched by operating the screen selecting means.

As a result, it is possible to provide a projector whose projection preparation is extremely simple even when projection is performed using a plurality of projectors.

[Brief description of the drawings]

FIG. 1 shows a projector shown as an embodiment of the present invention.
FIG.

FIG. 2 is a block diagram illustrating a configuration example of the projector.

FIG. 3 is an explanatory diagram showing a projection state of a composite screen.

FIG. 4 is an explanatory diagram showing a projection state of a continuous screen.

FIG. 5 is an explanatory diagram showing a projection state of a separate screen.

FIG. 6 is a front view of a projector showing a specific embodiment.

FIG. 7 is a side view of the projector shown as the embodiment.

FIG. 8 is a block diagram showing another embodiment.

FIG. 9 is an explanatory diagram showing a projection state of a conventional projector.

[Explanation of symbols]

 Reference Signs List 20 Projector 20R, 20L Projection means 21, 22 Lens barrel 23, 24 Projection lens 25, 27, 29, 31 Stage 26, 28, 30, 32 Motor

Claims (4)

[Claims] 1. A projector for optically projecting a display image of a display device, comprising: a plurality of projection units each having at least a light source, a display device, and a projection optical system; and a projection optical system provided in each of the projection units. And a driving means for moving the camera vertically and / or horizontally. 2. A system according to claim 1, further comprising control means for calculating a predetermined set value or a predetermined set value, operating said driving means in accordance with the calculation signal, and moving said projection optical system. 1. The projector according to 1. 3. The control means according to claim 1, wherein said control means comprises a composite screen, a continuous screen,
3. The projector according to claim 2, further comprising screen selection means for operating said driving means in accordance with a set value of a separate screen. 4. The projector according to claim 1, further comprising a manual unit for manually controlling the driving unit to operate the projection optical system.