JPH07115669A - Video projector, base therefor and video camera - Google Patents

Abstract

PURPOSE:To provide a video projector capable of easily performing stereoscopic picture display and wide screen display without flickers. CONSTITUTION:In one video projector, odd-numbered/even-numbered fields are discriminated from input video signals in an EVEN/ODD discrimination circuit 34, one of them is selected by a screen changeover switch 9 and projection is performed by controlling an LCD panel 15. In this case, by using the holding effect of the LCD panel 15, the video signals of the other field is held during the period of the field without signals and the same pictures are projected. Two such video projectors are used, one is used for projecting the video signals of the even-numbered field, the other is used for projecting the video signals of the odd-numbered field and the stereoscopic display and the wide screen display are easily performed. At the time, by holding the video signals, the video pictures of the respective fields are doubled and the flickers are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video projector device suitable for stereoscopic image display and wide screen display, a stand for the same, and a video camera device.

[0002]

2. Description of the Related Art As a conventional video projector device for displaying a stereoscopic image, those shown in FIGS. 25 and 26 are known.

The three-dimensional projector device shown in FIG.
Images corresponding to (left) and R (right) are stored in two video discs or video cassettes, which are simultaneously played back by starting two players 121 and 122, and then L and R.
Polarized spectacles 126 which are projected on the same screen 125 by two video projectors 123 and 124 which are orthogonally polarized (or circularly polarized) corresponding to It was a mechanism to realize stereoscopic viewing by viewing the left and right images independently with the left and right eyes.

On the other hand, the stereoscopic projector device of FIG.
This is an example used for reproduction of a VHD video disc. In this stereoscopic view example, L and R images are recorded on the VHD video disc for each field, reproduced by the VHD player 127 and displayed on the screen 125 by one projector 128, and the VHD is transmitted via the adapter 129. Under control of the player 127, glasses 1 with shutters
This is a mechanism for realizing stereoscopic vision by alternately shielding the 30 right and left for each field so that the left eye always sees the L image and the right eye sees the R image.

As a means for easily capturing such a stereoscopic image, the applicant of the present invention filed a prior application (Japanese Patent Application No. 3-33).
2386), a video camera as shown in FIG. 27 was proposed. This video camera has a transparent glass part 1
Rotating mirror 1 in which 34 and mirror section 135 appear alternately
By rotating 33 with the motor 140 in synchronism with the video signal, an image corresponding to the left eye is captured through the transparent glass portion 134 to form an image of a certain field.
Next, the image corresponding to the right eye from the lateral direction, which is reflected by the fixed mirror 132 by the mirror unit 135, is reflected and captured to be the image of the next field. This makes it possible to obtain a stereoscopic video signal in which an image for the left eye and an image for the right eye are alternately switched without using a liquid crystal shutter or the like that is expensive, complicated, and reduces the amount of light.

[0006]

However, in the stereoscopic projector apparatus of FIG. 25 according to the above-mentioned conventional technique, a pair of laser disks, a video cassette, etc. are required, so that the video software is limited, and the player and the projector. However, there is a problem in that the device is special and large-scaled, such that two are required for each of them, and the two players need to perform reproduction in synchronization with each other.

On the other hand, in the stereoscopic projector apparatus of FIG. 26, the structure of the eyeglasses is complicated and is not suitable for a large number of people to view, and the image seen by one eye is half (30 sheets / second) of the total number of fields (60 sheets / second). However, there is a problem that the image has many flicker.

Recently, there is a demand for horizontally arranging images from two video projectors and displaying the images on a wide screen having an aspect ratio of 8: 3. For example, in the newly proposed W-VHS standard, two NTSC
Since signals can be recorded / reproduced simultaneously, it has also been proposed to project them side by side with a video projector to obtain a large screen. There has not been a video projector device that allows a user or the like to easily display such an image or a video camera device that can easily capture such an image.

By the way, as for the size of the image that has been used up to now, the aspect ratio is 1: 2.3 even for the most horizontally long cinemascope.
28, the two 3: 4 television screens are overlapped by 0.32 minutes as shown in FIG. 28, and this portion is twice as bright as the other portions and gives a strange feeling. For example, it may be possible to hide one of the overlapping portions, but this time the next stitch will be noticeable.

The present invention has been made to solve the above problems, and a first object of the present invention is to realize a video projector device capable of easily displaying a stereoscopic image without a flicker and a wide screen display. The second purpose is to eliminate the discomfort in the overlapping part of the screens when the wide screens are displayed side by side with the projection screens of the two video projectors, and the third purpose is the wide screens. An object of the present invention is to provide a video camera device that can easily capture a display image.

[0011]

In order to achieve the above first object, in the video projector apparatus of the present invention, an odd / even number of an input video signal is used in the video projector apparatus for projecting an image using a liquid crystal device. A selection means for projecting only one of the fields is provided, and the video signal of the previous field is held and projected by the holding means in the other field period.

In order to achieve the above second object,
The video projector device of the present invention is a video projector device in which two or more video projectors are used and a large image is projected on a single screen by shifting the projection part so that the ends overlap. Then, the overlapped portions are projected through a means for processing such that they become darker toward the ends.

Further, in order to achieve the above-mentioned third object, in the video camera device of the present invention, the entire circumference of the disk is divided into 2N with N being an integer, and every other half of the divided portion is divided. A half portion of a rotary plate, which is a reflecting mirror and the rest is a transparent portion, is diagonally arranged in front of the lens portion of the video camera body, and F is a field frequency F / (by a motor synchronized with the video signal of the video camera body. 2N), and the image from the front through the transparent portion and the image laterally reflected by the reflecting means and then reflected by the reflecting mirror of the rotating plate are alternately incident on the lens portion of the video camera body. A video camera device having an optical system for
The reflection angle of the reflecting means is set to an angle at which two adjacent and continuous screens can be taken so that a so-called wide screen can be taken.

[0014]

According to the video projector apparatus of the present invention, only one of the odd / even fields of the input video signal can be selected and photographed for one video projector apparatus, and the other field is used during the field period when no signal is present. By making it possible to hold the video signals of the above and project the same image, two video projectors can easily be used by projecting one of the video signals of even fields and the other of them by projecting the video signals of odd fields. It enables stereoscopic video and wide screen display, and doubles the video in each field at that time to prevent flicker.

Further, when the wide screen display is performed by arranging the projection screens of two video projectors vertically or horizontally on the same screen, the overlapping parts of the screens become darker toward the end of each screen. By applying processing, the brightness of the other parts is made uniform and the discomfort is eliminated.

Further, in the video camera device of the present invention,
By rotating a rotating plate in which a transparent portion and a reflecting mirror portion are alternately appearing in synchronization with a video signal, one sidewise wide-screen image is captured through the transparent portion to form an image of a certain field, and then the reflecting means. The other side of the image from the lateral direction reflected by is reflected by the reflecting mirror portion and is taken in to form an image of the next field, and a video signal for wide screen display is obtained.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings.

First, a first embodiment of the video projector device according to the present invention will be described. FIG. 1 is an external view of this embodiment. An optical system, which will be described later, is built in the inside of the video projector main body (hereinafter abbreviated as the main body) 1, and an image is formed on the screen by the projection lens 2. The projection lens 2 can be moved back and forth to be in focus by being rotated.
A battery 3 or a power source is attached to the rear part of the main body 1. On both sides of the body 1, a speaker (L: for left) 4L,
(R: for right) 4R is attached. Further, a video input terminal 5, a video output terminal 6, audio input terminals 7L and 7R, and audio output terminals 8L and 8R are also provided. A screen changeover switch 9 and a voice changeover switch 10 are attached to the upper part of the main body 1. In addition, a volume control knob 11 is provided on the side surface.

2 and 3 are views showing the construction of the above-mentioned optical system. FIG. 2 is a perspective view and FIG. 3 is a sectional view. In the figure, reference numeral 12 is a light emitter, inside which an internal mirror is formed and a halogen lamp 13 is inserted, and the internal mirror forms a part of an ellipse and collects light. Reference numeral 14 is a heat ray cut filter. A small liquid crystal (LCD) panel 15 is used as an image device, is fixed on a printed circuit board 16, and signals are transmitted to a connector 18 from a flexible wiring board 17. A slide-type screen changeover switch 9 is attached to the upper part of the printed circuit board 16, and the polarization direction of the projection light can be changed over by sliding the switch cover 20 fixed to the screen changeover switch 9. That is, there is a pin 21 under the switch cover 20, and polarizing plates 22 and 23 (22: lamp side,
(23: lens side) is connected by a shaft 24, and when the switch cover 20 is moved, the pin 21 pushes the elongated hole 24 above the polarizing plate 23 to rotate the polarizing plates 23 and 22 simultaneously in the same direction. The projection lens 2 is held by the lens holder 25, the inner surface of the lens holder 25 is threaded, and the projection lens 2 is fitted to the projection lens 2. When the projection lens 2 is rotated, the projection lens 2 moves back and forth. The liquid crystal panel 15 is a so-called normally white type, and the polarizing plates 23 and 22 are arranged so that the polarization directions thereof are orthogonal to each other at two positions by switching.

FIGS. 4A, 4B and 4C are explanatory views showing the movement of the polarizing plates 22 and 23. In the figure, the polarizing plate 2
Although only the 3 side is shown, the polarizing plate 22 also moves in the same direction via the axis 24. The switch cover 20 is in a neutral state (see FIG. 4).
When the polarization direction of the polarizing plate 22 is set to 45 ° in (a)), the polarization direction of the polarizing plate 22 becomes horizontal when the switch cover 20 is slid to the right (FIG. 4B).
Slide it to the left (Fig. 4 (c)) and it will be in the vertical direction.
The polarization directions can be made orthogonal at the two positions.

FIG. 5 is a block diagram showing the configuration of the electric system of this embodiment. In this embodiment, the video signal input from the video input terminal 5 is supplied to the RGB drive amplifier 31.
The video signal including the RGB components amplified by the liquid crystal (LCD) panel 15 is passed through the driver 32.
Send to.

On the other hand, the amplified video signal passes through the sync separator 33 to extract the V sync, which is a vertical sync signal, and the H sync, which is a horizontal sync signal.
It is sent to the (even) / ODD (odd) discrimination circuit 34. E
The VEN / ODD determination circuit 34 outputs a digital signal (hereinafter referred to as an E / O signal), which is a rectangular wave inverted for each field based on the V sync and the H sync, to the screen changeover switch 9. Screen change switch 9 is EV
The AND gate is selected by selecting one of the three signals of the output (for R) of the EN / ODD discrimination circuit 34, the output (for L) obtained by inverting this output by the inverter 34a, and the high level (H: for normal). The condition is to generate an R-V start signal or an L-V start signal for refreshing the LCD panel 15, which will be described later. These start signals are created by opening and closing the signals of the controller 36 in the AND gate 35 under the conditions selected above. The controller 36 generates a pulse signal (VD signal) for each field based on the vertical synchronization signal included in the video signal of the RGB drive amplifier 31, and the AND gate 3
Send to 5. Reference numeral 37 is a light drive circuit for turning on the light 13 for projection.

In the audio circuit, the left and right audio amplifiers 3
3 circuits 3 between 8R and 38L and audio input terminals 7R and 7L
An odd number (O
When the (DD) / even (EVEN) field is selected, it is automatically switched so that only the sound of L / R corresponding to the lens L / R of the polarizing glasses having the same polarization direction of the polarizing plate 23 corresponding thereto is produced. Each circuit of the two-circuit, two-contact AUTO / stereo audio selector switch 10 is inserted between the switch 9 and the audio input terminals 7R, 7L to connect the AUTO side to the normal side and the R side or L side of the switch 9. The stereo side is directly input to each of the amplifiers 38R and 38L. When the switch 10 is set to the stereo side, sound is output in stereo regardless of the position of the switch 9. Here, when the switch 9 is switched, normal / ODD / EVEN is switched, and at the same time, the polarization direction is switched by the mechanism shown in FIG. 2 so that the polarization direction is substantially orthogonal in ODD / EVEN as shown in FIG. Can be

FIG. 6 shows an R for refreshing the liquid crystal panel.
7 shows a timing chart of generation of a −V or LV start signal.

The E / O signal is a digital signal that is inverted every field by a video signal, and becomes a positive signal in the case of the EVEN field and a negative signal in the case of the ODD field. The R-V start signal is a signal generated by the E / O signal and the VD signal, and
When the O signal and the VD signal generated for each field are positive signals, the RV start signal is generated as a positive signal in the AND gate 35. The LV start signal is
When the signal generated by the E / O signal and the VD signal is a negative signal of the E / O signal and the VD signal is a positive signal, the L-V start signal in the AND gate 35 becomes a positive signal. Occur. R generated in this way
The −V start signal or the LV start signal is alternately generated for each field to reset the liquid crystal display panel 15, and each time, a video image based on a new stereoscopic video signal can be displayed. That is, the intervals at which these start signals are generated are exactly one field, and the intervals (A, B) correspond to the intervals of one frame of the video signal. The LV start signal is generated in the odd field, and the RV start signal is generated in the even field. On the other hand, if a liquid crystal panel 15 having a hold effect is used, it has the property of holding the previous image until refreshed by any of these start signals. Therefore, the image refreshed by the LV start signal can hold the image in the EVEN field during the ODD field, and the image refreshed by the R-V start signal can hold the image in the ODD field during the EVEN field. .

FIG. 7 shows a MOS type FET system L of the active matrix LCD panel used in this embodiment.
The conceptual diagram of a CD panel is shown. FIG. 7 shows the LCD panel 15
In the figure, an H-shift register 152H and a V-shift register 152V are connected to the display unit 151, respectively. Clock signals HCK and VCK are supplied to the registers 152H and 152V, respectively, and the elements of the display unit 151 are scanned in the horizontal and vertical directions to emit light. Normally, in an LCD panel of the type described above, a V-shift register 152V, e.g.
The start signal and the RH start signal are supplied to the horizontal shift register 152H at every horizontal cycle, and the output pulse of these registers supplies the display unit 15 of the LCD panel.
Each element of No. 1 is made to shine. On the one hand, these start signals are also called refresh pulses or reset pulses. Here, when the supply of the R-V start signal is stopped during the period B as indicated by the broken line, the shift pulse from the V-shift register 152V is not supplied to the display unit 151, and the content of the picture one field before is unchanged. The image can be held and left afterimage.

Therefore, in FIG. 5, the switch 9 is set to OD.
When the D field or the EVEN field is set, the image of the previous field is held and displayed in the field period in which there is no signal due to the hold effect of the liquid crystal panel 15, so that an image without flicker can be projected.

8 to 12 show examples of use of this embodiment.

FIG. 8 shows an example of enjoying a stereoscopic image using two video projectors. L for each field
The video signal with R is input to the two video projectors 4
1, 42 are connected. By switching the switches 9 on the left side video projector 41 to the L side and on the right side video projector 42 to the R side, an image which is polarized so as to be substantially orthogonal to R / L as shown in FIG. Project on top of each other. When the image on the screen 39 is put on the glasses 27 in which orthogonal polarizing plates are attached to L / R, the image on the R side can be seen independently by the right eye and the image on the L side by the left eye. I can see It should be noted that the screen 39 at this time is not likely to scatter, and a polarized sheet such as a silver-colored vinyl sheet is more clearly reflected because the polarized light is reflected more easily. Further, as for voice, L / R sound is automatically output to the L side / R side by the circuit of FIG.

FIG. 9 shows an example of display on a wide screen. The images from the two video projectors 41 and 42 are horizontally projected on the screen 39. At this time, the joints of the images may be slightly overlapped as shown in the figure. In this case, polarized glasses are unnecessary. It should be noted that the video software needs to be dedicated video software in which the ODD / EVEN field has images that are right next to each other.

FIGS. 10 and 11 show the case where the video software having another image in the ODD / EVEN field is reproduced and projected on the screen 39 from the projector 1, and the video software having the common audio is contained. This is the case when is reproduced and displayed. At this time, the switch 10 is set to the stereo side. This video software is an example of so-called BGV (background visual), and when the switch 9 is switched to the R side, an image of the driving landscape of the car as shown in FIG. 10 is displayed, and when the switch 9 is switched to the L side. , A sea image as shown in FIG. 11 is displayed. In this way, it is possible to select and project a desired image from the two.

Incidentally, a VTR standard called "W-VHS" has recently been announced. Two Ns in one of this mode
It has a function of recording / reproducing TSC signals at the same time. This mode can be sufficiently used in a video projector in which the field memory function is removed from the present embodiment and only the horizontal and polarization directions can be changed. Further, as shown in the usage example of FIG. 12, four fields can be obtained from two NTSC signals reproduced by such a VTR 26 of the W-VHS standard, so that four video projector devices (411) of this embodiment are used. , 421, 412, 422)
If used, it is possible to display an ultra-wide screen in which four images are arranged side by side on the wide screen 39.

Next, an embodiment of the table of the video projector device of the present invention will be described. The present embodiment shows a stand of a video projector device capable of simple wide screen display.

The external view of FIG. 13 shows the structure of the stand of the video projector device. In the figure, reference numerals 41 and 42 denote two video projector devices, which are movable bases 43 and 42, respectively.
It is fixed on 44. The movable bases 43 and 44 are attached at their tips to a base 45 so as to be rotatable by shafts 46 and 47. Further, elongated holes 431 and 441 are provided at the rear end portion in the same direction as the projection direction, and pins 48 and 49 are loosely fitted therein. The pins 48 and 49 are attached to the pin mounting portions 481 and 491, respectively.
Male screws 50 and 51 are inserted in the screws 1491 so as to be slidable in the lateral direction with respect to the projection direction by screw feeding. The male screws 50 and 51 are reverse screws to each other, and are integrally connected to each other at the central portion and rotatably attached to the base 45,
A knob 52 is fixedly attached to the central portion. Base 45
A level 53 is provided at the center of the and the height adjusting screws 54 and 55 are provided at the lower rear corners to allow the base 45 to be adjusted horizontally.

In the above structure, by turning the knob 52, the angle between the projection directions of the video projectors 41 and 42 can be moved in the left and right directions by the same amount with respect to the center. Accordingly, it is possible to correspond to the display of a stereoscopic image by adjusting the intersecting angle on the screen, and it is possible to correspond to the wide screen display by adjusting the expanding angle.

Next, a second embodiment of the video projector apparatus of the present invention for eliminating the discomfort of the overlapping portion on the wide screen will be described.

14 and 15 show the structure of the optical system of the projector in this embodiment. 14 is a perspective view thereof, and FIG. 15 is a sectional view thereof. 2 is a projection lens, 12 is a projector, 13 is a halogen lamp, 14 is a heat ray cut filter, and 15 is a small liquid crystal panel. In this embodiment, a filter holder 61 is provided in front of the liquid crystal panel 15, and a filter 62 can be inserted therein. The filter 62 is 2
When a wide screen is displayed by a single video projector, the overlapping portion has a characteristic that the transmitted light becomes darker as it gets closer to the edge of the screen.

FIG. 16 shows the image projected by one video projector 41 with such a filter attached. As shown in the figure, in the projection screen overlapping portion L, the right end becomes darker toward the end.

FIG. 17 shows two video projectors 41,
Since the brightness is not increased in the overlap portion L of the projection screen even when the images are superimposed, the joint is not broken.

FIG. 18 shows an example in which the light reduction processing of the overlap portion is electrically performed. In this example, by inputting the video signal from the VTR 26 to each of the projectors 41 and 42 through the effectors 63 and 64, the overlap portion L of the wide screen display on the screen 39 is at the end as if it was filtered. Attenuate so that it gets darker.

Although an example in which a wide screen is obtained from two screens has been shown here, it is as described above that the horizontal screen can be connected by any number of screens. Further, not only the horizontal arrangement but also the vertical arrangement or the vertical and horizontal alignment may be used to obtain a large screen. You can increase the aspect ratio with a lens to make it longer horizontally, but the longer the length, the worse the image quality. In this example, there is no such drawback.

Next, an embodiment of the video camera device of the present invention will be described.

FIG. 19 is a perspective view showing the structure of an embodiment of the present invention. The present embodiment is an example in which an adapter is attached in front of the lens of a normal video camera to form a video camera for both stereoscopic image / wide screen image capturing. In the figure, 7
1 is a front window, 72 is an adapter housing (hereinafter simply referred to as a housing), 73 is a stay, 74 is a normal video camera,
Reference numeral 82 is a semi-fixed mirror, 83 is a rotary mirror having half a transparent glass portion (hereinafter abbreviated as glass portion) 84 and half a mirror portion 85, 86 is a motor, 87 is an LED, 88
Is an optical sensor, and 89 is an objective lens of the video camera 74 (hereinafter, simply referred to as a lens).

In the above structure, the rotary mirror 83 is
The half of the disk-shaped mirror is stripped (or omitted) from the silver plating to leave it as is, and the mirror portion 85 is half and the glass portion 84 is half. The disc-shaped rotating mirror 83 has its center fixed to the rotation shaft of the motor 86, and is arranged such that the disc-shaped half portion is positioned in the front of the lens 89 of the video camera 84 in a laterally inclined manner. There is. In this case, the mirror portion 85 is configured such that the surface facing the lens 89 side is a total reflection mirror. On the other hand, semi-fixed mirror 8
2 is also composed of a total reflection mirror, and is arranged such that when the optical axis is away from the rotating mirror 83 by a distance W, its reflecting surface is tilted toward the rotating mirror 83 and its tilt angle can be adjusted by a movable mechanism. . This W is the distance between the human right eye and the left eye and is approximately 65 mm. An LED 87 is attached to one side and an optical sensor 88 is attached to the other side so as to sandwich the rotating mirror 83, and the light of the LED 87 is blocked by the mirror section 85 and passes through the glass section 83, whereby the position of the mirror section 85 can be detected. It is like this.

Next, the structure of the power supply to the adapter and the structure of the movable mechanism of the semi-fixed mirror will be described. Figure 20
(A) is a perspective view showing the structure, and is a perspective view seen from a side surface. Further, FIG. 20B is a panel diagram related to the movable mechanism.

The power adapter 101 is inserted between the video camera 74 and the battery 102, and is originally attached to the place where the battery 102 of the video camera 74 should be attached, and the battery 102 is attached to the back surface thereof. There is. Then, the power of the battery 102 is supplied to the video camera 74 and also to the control circuit contained in the housing 72.

Two protrusions 1 are provided on the rear surface of the semi-fixed mirror 82.
03, and the shaft 104 is placed here. This axis 10
When the knob 107 is moved to the left or right by the link 105 connecting the protrusion 4 of the knob 4 with the protrusion 4 of the knob 107, the semi-fixed mirror 82
Rotates about a fulcrum 108.
As shown in the panel view of FIG. 20B, marks 109 to 112 are provided as positions where the knob 107 stops. 109 is wide, 110 is far, 111 is middle, 112
Is a mark indicating closeness, and the knob 107 can be stopped even in the middle of those marks.

Next, the mounting structure of the adapter and the video camera thus constructed will be described. FIG. 21 is a perspective view showing a detached state to show the structure.

In the figure, 72 is a housing, 73 is a stay,
74 is a video camera, 75 is a connector, 76 is a video camera output terminal on the adapter side, 77 is a positioning pin, 78
Is a tripod screw, 79 is a camera lens hole, 80 is a convex portion, 8
Reference numeral 1 denotes a video output terminal on the video camera 4 side.

As shown in FIG. 21, the adapter housed in the housing 72 is attached by the stay 73 in front of the video camera 74 (on the objective lens side) with the front window 71 facing forward (on the subject side). . In addition, the power adapter 10
1 is provided with a connector 75 to be inserted into the video output terminal 81 of the video camera 74 and a video output terminal 76. The connector 75 is for taking in a video signal in order to rotate the rotating mirror 83 described above in synchronization with the video signal, and the video output terminal 76 is a video output terminal of the video camera 74 which the user can connect by connecting the connector 75. 81
This is an alternative terminal provided because it cannot be used as a monitor.

As shown in FIG. 21, the stay 73 includes the housing 7
2 is integrally formed with the positioning pin 77, the positioning pin 77 is planted upward, the mounting screw 78 does not fall off, the lower part is the screw head, and the screw part is projected upward and mounted in a loosely inserted state. . The adapter uses the positioning pin 77 of the stay 73 and the tripod screw 78,
It is fixed to the video camera 74 side by tightening the screw head. Further, a camera lens hole 79 is formed in the housing 72 on the side of the video camera 74, and a convex portion 80 is provided at the edge thereof. The convex portion 80 is fitted into the collar portion of the objective lens of the video camera 74 with the snap ring so that the positioning can be performed.

Next, the structure of the optical system of the above embodiment will be described. FIG. 22 is a diagram showing the configuration, and is an internal configuration diagram viewed from above. Motor 86 rotates 30 times per second (NTSC
Signal), the rotary mirror 83 detects the position by the LED 87 and the optical sensor 88 so that the joint between the glass portion 84 and the mirror portion 85 shown in FIG. 19 is accurately in the vertical blanking period of the video signal of the video camera 74. To come
Servo control is performed by a control circuit (not shown). Now, the transparent glass portion 84 of the rotating mirror 83 is the video camera 74.
When it is in front of the lens, the image L is directly shot by the video camera 4. When the mirror unit 15 comes, the image R reflected by the semi-fixed mirror 82 is reflected and photographed.
The optical axes of the image R and the image L are W as described above.
(About 65 mm) apart. Therefore, the shooting distance from the subject to the L and R images is 65 mm (=
W) It will be different, but it is actually 80 cm from the subject
Since the images are taken at a distance above each other, it may be considered as an error range. When the semi-fixed mirror 82 is moved by the knob 107, the link 10
5 rotates in the A or B direction around the fulcrum 108,
The optical axes of the image R and the image L can be wider than W (A position: when capturing a wide image) or narrowed to W (B position: when capturing a stereoscopic image).

Another configuration example of the above-mentioned rotating mirror is as follows.
It is also possible to use one in which the disk shape is divided into four and transparent glass parts and mirror parts are alternately formed. In this case, the number of rotations of the motor 16 is 15 rotations (NTSC since one rotation corresponds to a video signal of 2 frames (4 fields).
When the signal). Generally, the entire disc-shaped circumference is 2N.
(N = 1, 2, 3 ...) can be used in which every other half is used as a mirror part and the rest is used as a plain part, and F / ( 2N)
(F: field frequency, 60 Hz for NTSC signal,
The PAL signal may be rotated at 50 Hz).

In the above structure, the servo control of the motor 86 is performed as follows. The video signal output from the video camera 74 and input to this adapter is the left image L
And a field for transmitting the right image R are alternately repeated. Here, the detection signal of the optical sensor 88 is obtained when the transparent glass portion 84 is located in front of the lens of the video camera 74, that is, the left image L.
Is detected during photographing, the odd-numbered or even-numbered field is discriminated and the vertical synchronizing signal or the like when the right image R should be switched to the left image L and the detection signal of the optical sensor 88 are compared, and their timings are compared. The rotation of the motor 86 is controlled so that the time difference T becomes a predetermined value. The value of T is
When the joint between the glass portion 84 and the mirror portion 85 is a value accurately located in the vertical blanking period of the video signal,
It is determined by the mounting position of D87 and the optical sensor 88. By the servo control described above, a video signal in which the left image L and the right image R are placed in exactly alternating fields can be obtained.

FIG. 23 is a diagram showing an example of use of this embodiment. Since the semi-fixed mirror 82 moves in this embodiment as described with reference to FIG. 22, if the semi-fixed mirror 82 is set in a state where the optical axes of the two images L and R are open to the outside of W, 2
You can shoot a wide screen that combines two images.

FIGS. 24A, 24B, and 24C are views showing the photographing state of the wide screen, and if the images are photographed side by side as shown in FIG. 24A, the maximum width is 3: 8. Further, a part of the ends may be overlapped as shown in (b). If the overlap amount is further increased, it is possible to obtain a high-definition size of 9:16 as shown in (c). In addition, FIG.
If the knob 107 shown in is moved further, a stereoscopic image can be taken. Knob 10 when shooting 3D images
By moving 7 to the position of marks 110-112,
The distance of the subject from the video camera can be adjusted.

Although the above video camera device has been described as an adapter type, it goes without saying that it may be an integrated type. Further, by providing a mode in which the rotating plate is stopped at the transparent glass portion, it is possible to enable normal shooting without removing the adapter or the like. Also, by operating the electronic shutter circuit of the video camera body, shortening the shooting time for each field of the video signal to avoid the transient state due to the movement of the rotating mirror to ensure the switching of the left / right image. You can As described above, the present invention can be applied in various ways in accordance with the gist thereof and can take various embodiments.

[0058]

As is apparent from the above description, the present invention has the following effects.

(1) According to the invention of the video projector device of claim 1, when two video signals such as a stereoscopic video and a wide video are alternately included in the field of the video signal and one field is projected. In the field with no signal, the video signal of the previous field is held and projected, so that an image with less flicker can be obtained.

(2) According to the invention of the video projector device of claim 2, in particular, since the above-mentioned video signal is held by the hold effect of the liquid crystal device, an extra image memory becomes unnecessary, and it is cheap and small. It can be made with electricity.

(3) According to the invention of the video projector device of claim 3, since the video signals of the normal / odd field / even field can be switched, the stereoscopic projection can be performed by simply combining two identical sets. You can Further, not only the stereoscopic projection but also one image can be projected by inserting and selecting another image in the odd field / even field, or can be widened by projecting two devices vertically or horizontally.

(4) According to the invention of the video projector device of claim 4, in particular, the polarizing means which can set the polarization directions to be orthogonal to each other at the time of projecting the odd field and at the time of projecting the even field is incorporated. , 3D images can be projected with a simple structure without compromising the light amount.

(5) According to the invention of the video projector device of claims 5 and 6, since the polarization direction is set by the polarization means in conjunction with the selection of odd field / even field, two units are used. You can easily project stereoscopic images.

(6) According to the invention of the video projector device of claim 7, in particular, in the case of two identical projectors,
You can easily project stereoscopic images and wide images. Hi-vision projectors that use a dedicated high-pixel liquid crystal device for wide-screen displays have been very expensive, and the number of pixels has been reduced to simply cut the normal screen up and down. According to this video projector device, in particular, since two devices are arranged side by side, it is possible to display an ultra wide screen with the normal number of pixels.

(7) According to the invention of the video projector device of claims 8 to 10, by reducing the light quantity of the overlapping part of each screen at the time of wide screen display,
The overlapping part does not increase in brightness and can be blinded.

(8) According to the invention of the stand of the video projector device of claim 11, two video projectors can be easily set so that wide screen display and stereoscopic image display can be performed.

(9) According to the twelfth aspect of the invention of the video camera device, a wide screen can be photographed with a simple structure. Moreover, since the total reflection mirror is used in combination, the reduction in the amount of light is small.

(10) According to the thirteenth aspect of the invention of the video camera apparatus, it is possible to switch between wide-screen photographing and stereoscopic image photographing.

(11) According to the invention of the video camera device of claim 14, since the structure is particularly simple, it can be supplied to the customer as an inexpensive adapter.

(12) According to the invention of the video camera device of claim 15, in particular, the normal photographing can be performed without switching the adapter and the like by switching, and the usability is improved.

(14) According to the sixteenth aspect of the invention of the video camera device, it is possible to reliably switch the image while avoiding a transient state due to the movement of the rotary plate.

[Brief description of drawings]

FIG. 1 is an external view showing a first embodiment of a video projector device of the present invention.

FIG. 2 is a perspective view showing a configuration of an optical system of the first embodiment of the video projector device.

FIG. 3 is a sectional view of an optical system of the first embodiment of the video projector device.

4 (a), (b), and (c) are operation explanatory views of the optical system of the first embodiment of the video projector device.

FIG. 5 is a block configuration diagram of an electric system of the first embodiment of the video projector device.

FIG. 6 is a timing chart showing the operation of the electric system of the first embodiment of the video projector device.

FIG. 7 shows L of the first embodiment of the video projector device.
Block diagram of CD panel

FIG. 8 is a diagram showing an example of use of the first embodiment of the video projector device (part 1).

FIG. 9 is a diagram showing an example of use of the first embodiment of the video projector device (part 2).

FIG. 10 is a diagram showing an example of use of the first embodiment of the video projector device (part 3).

FIG. 11 is a diagram showing an example of use of the first embodiment of the video projector device (Part 4).

FIG. 12 is a diagram showing an example of use of the first embodiment of the video projector device (Part 5).

FIG. 13 is a perspective view showing a configuration example of a projector stand according to the present invention.

FIG. 14 is a perspective view showing an optical system of a second embodiment of the video projector device of the present invention.

FIG. 15 is a sectional view of an optical system of a second embodiment of the video projector device.

FIG. 16 is an operation explanatory view of the second embodiment of the video projector device.

FIG. 17 is a diagram showing an example of use of the second embodiment of the video projector device.

FIG. 18 is an explanatory diagram showing another configuration example of the second embodiment of the video projector device.

FIG. 19 is a perspective view showing an embodiment of a video camera device of the present invention.

20 (a) and 20 (b) are perspective views and a panel view of an adapter seen from the back side of the embodiment of the video camera device.

FIG. 21 is an exploded perspective view showing a mounting structure of the video camera device.

FIG. 22 is a configuration diagram of an optical system viewed from above the video camera device.

FIG. 23 is a diagram showing a usage state of the video camera device.

24 (a), (b) and (c) are explanatory views showing an example of use of the video camera device.

FIG. 25 is a diagram showing a first example of a conventional stereoscopic projector device.

FIG. 26 is a diagram showing a second example of a conventional stereoscopic projector device.

FIG. 27 is a perspective view showing a conventional example of a video camera device.

FIG. 28 is an explanatory diagram showing an example of a wide screen.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Video projector 2 ... Projection lens 9 ... Screen switch 13 ... Halogen lamp 15 ... Liquid crystal panel 22, 23 ... Polarizing plate 26 ... VTR 27 ... Polarizing glasses 33 ... Sync separator 34 ... EVEN / ODD discrimination circuit 35 ... And gate 36 ... Controller 39 ... Screen 41, 42 ... Video projector 61 ... Filter holder 62 ... Filter 63, 64 ... Effector 72 ... Adapter housing 74 ... Video camera 75 ... Connector 82 ... Semi-fixed mirror 83 ... Rotating mirror 84 ... Transparent glass part 85 Mirror unit 86 Motor 87 LED 88 Optical sensor 89 Objective lens 101 Power adapter 102 Battery 103 Protrusion 104 Shaft 105 Link 107 Knob

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiki Shirochi 6-735 Kitashinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation

Claims (16)

[Claims] 1. A video projector apparatus for projecting an image using a liquid crystal device, wherein an odd number of input image signals
A video projector device, comprising: a selection means for projecting only one of even-numbered fields, wherein the video signal of the previous field is held and projected by a holding means in the other field period. 2. The video projector device according to claim 1, wherein the liquid crystal device also functions as a holding unit for the input video signal, and holds the video signal of the previous field by the holding effect of the liquid crystal device. apparatus. 3. The video projector device according to claim 1, wherein the selection means can select one of a normal video signal, a video signal of only odd fields and a video signal of only even fields. Video projector device. 4. The video projector device according to claim 1, wherein a polarizing means for projecting light is provided, and when projecting an image signal of an odd field or an even field, the polarizing means is set so that polarization directions thereof are substantially orthogonal to each other. A video projector device having a mechanism. 5. The video projector apparatus according to claim 4, wherein the polarization direction is set by interlocking the setting mechanism of the polarization unit with the selection of the odd / even field image signal by the selection unit. . 6. The video projector device according to claim 4, wherein the polarizing means is a polarizing plate, and the setting mechanism of the polarizing means is a mechanism capable of rotating the polarizing plate by approximately 90 °. Video projector device. 7. The video projector device according to claim 1, wherein two or more video projector devices are used,
A video projector device characterized by projecting an odd-field video signal on one side and an even-field video signal on the other side by superimposing them on the same screen or vertically and / or horizontally. 8. A video projector device, wherein two or more video projectors are used to project a large image on a single screen by shifting the projection part so that the ends overlap each other. A video projector device, wherein the overlapped portions are projected via a means for processing such that they are darker toward the ends. 9. The video projector device according to claim 8, wherein the means for processing to make the image darker toward the end is a filter inserted in the optical path of the video projector. 10. The video projector apparatus according to claim 8, wherein the means for processing to darken the edge portion performs the processing by electrically attenuating the video signal. 11. A mechanism for mounting two video projector devices in the same vertical position, and a means for adjusting the mounting mechanism so that the angle between the projection directions of the two video projector devices can be changed. And a stand for a video projector device. 12. A lens of a video camera body comprising a half of a rotary plate in which the entire circumference of a disc is divided into 2N with N being an integer, and every other half of the divided portion is a reflecting mirror and the rest is a transparent portion. Is diagonally arranged in front of the section, and F is rotated at F / (2N) as a field frequency by a motor synchronized with the video signal of the video camera main body, and the image from the front through the transparent portion and the horizontal direction by the reflection means. A video camera device having an optical system for alternately allowing an image reflected in a direction and then reflected by a reflecting mirror of the rotating plate to enter into a lens portion of the video camera body, the reflection angle of the reflecting means being adjacent to each other. A video camera device characterized in that two so-called wide screens can be shot by setting an angle at which two consecutive screens can be shot. 13. The video camera device according to claim 12, further comprising a mechanism for changing the angle of the reflection means, the reflection angle being set to an angle for photographing the same subject, and the left eye and the right eye for each field of the video signal. A video camera device characterized in that it can also be used in a so-called three-dimensional video shooting video camera capable of switching and outputting images corresponding to those seen from the eyes. 14. The video camera device according to claim 12, wherein the optical system is detachably attached to the video camera body. 15. The video camera device according to claim 12, wherein normal shooting is possible with the stop position of the rotary plate in front of the lens portion as a plain portion. 16. The video camera device according to claim 12, wherein the electronic shutter circuit of the video camera main body is operated in association with the rotation of the rotary plate to ensure that the image of each field of the video signal is switched. A video camera device characterized by shortening the imaging time of.