JPS61101175A - Video camera - Google Patents

Abstract

PURPOSE:To use the titled camera as a video projector with simple switching operation by moving and positioning the camera selectively so that any of a photoelectric converting plane of a photoelectric converting means or an image plane of an image means comes to the same plane as the image forming plane of an image pickup lens. CONSTITUTION:The image forming plane 5a of an electronic view finder 5 is positioned on the image forming plane of the image pickup lens and it is used for the projector. 'PROJECTOR' 27a is printed on a position corresponding to the operating knob 18 of an outer case 1a as the display means. When it is used as a camera, the operating knob 8 is moved to a position printed as 'CAMERA' 27b as shown in the figure. A lever 17 is turned by a drive pin 21 formed to the operating knob 18 and a moving plate 15 is moved in the direction of arrow 28 by a pin 20. Then a sphere 28 is positioned on a position intruded to a dent 15e. The photoelectric converting plane 3a of the image pickup tube 3 is positioned on the image forming plane of the image pickup lens, then it shows the state that it is used as a video camera.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a video camera having the function of a video projector.

2. Description of the Prior Art Structure and its Problems In recent years, home video tape recorders 1 (hereinafter referred to as VTRs) and video cameras have become widespread. In general, many of these are used for recording, dubbing, and recording TV programs indoors.
It was used for purposes such as playing back music tapes, but VT
R. As video cameras have become smaller and lighter, their usage has increased, such as taking pictures outdoors.

On the other hand, there is a demand for viewing recorded content, such as movies, plays, etc., on a large screen, and this has been realized using large monitor televisions, video projectors, and the like.

However, when shooting and playing back outdoors using a video camera, VTR, video camera, and VTRTR
+Various equipment is required, including a monitor TV, battery for the monitor TV, and a connecting cord tube. The larger the screen of a monitor TV, the more powerful it is and the better the playback effect, but it is very inconvenient to carry a large monitor TV because of its large capacity and weight. Furthermore, there are several types of connection cords for monitor televisions, and it is complicated to check and select the connection cord that matches the monitor television to be used.

OBJECTS OF THE INVENTION An object of the present invention is to provide a video camera that can be used as a video projector by simple switching operations.

Structure of the Invention The video camera of the present invention comprises a photoelectric conversion means for converting an optical image of a subject incident on a photographic lens into an electric signal, an image representation means for converting the electric signal into a visible image, and a photoelectric conversion means for converting the electric signal into a visible image. and a moving positioning means for selectively moving and positioning so that either the photoelectric conversion surface or the surface image surface of the image display means is on the same plane as the imaging plane of the photographing lens. This allows it to be used as a video projector with a simple switching operation, making it unnecessary to connect a monitor TV or video projector to two connection cords, making it possible to easily play back recorded content anywhere, indoors or outdoors. .

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show the configuration of a video camera according to an embodiment of the present invention, with FIG. 1 showing the state in which it is used as a video camera, and FIG. 2 showing the state in which it is used as a video projector. FIG.

In FIG. 1, an optical image 8 of a subject 12 enters a photoelectric conversion surface 3a of an image pickup tube 3 through a photographing lens 2 having a focusing mechanism and a variable magnification mechanism. The optical image 8 is converted into an electrical signal by the image pickup tube 3, and further converted into a video signal by the processing circuit 4.

A video signal is output from the processing circuit 4 to the electronic viewfinder 5, and the screen surface 5 of the electronic viewfinder 5
A visible image of the subject 12 is emitted at point a. The emitted visible image 9 is visually observed through the reflecting mirrors 6 and 7 and the Loubaix 11. The video signal generated by the processing circuit 4 is also output to the VTR 10 and recorded.

FIG. 2 is a configuration diagram when used as a video projector. A video signal output from the VTR 10 is output to an electronic viewfinder 5 via a processing circuit 4. The electronic viewfinder 5 is moved and positioned on the imaging plane of the photographic lens 2 by a moving positioning means which will be described in detail later. Screen surface 5 of electronic viewfinder 5
The visible image 9 emitted at point a is projected onto the screen 13 through the photographing lens 2. The focus of the visible image projected on the screen 13 can be adjusted using the photographic lens 2, and the image can be expanded or contracted.

FIG. 3 is a front view showing moving and positioning means for a video camera in one embodiment of the present invention. 4 and 5 are right side views showing the moving and positioning means.

In FIGS. 3 and 4, the electronic viewfinder 5 and the image pickup tube 3 are connected to the holding plates 14a, 14b and the fastening parts 24a, 2.
4b, 24C, and 24d, each is fixed at a predetermined position on the holding member 14.

The holding member 14 includes fastening parts 26a, 26b, and 26c.

It is fixed to the movable plate 15 by 26d. Fixed plate 1
6 is a fastening part 25a for the video camera 1;

It is attached by 25b, 25C, and 2sd.

The movable plate 15 has long holes 15b and 15C formed therein, and guide pins 22a and 22 press-fitted into the fixed plate 16.
b are engaged with each other. The lever 17 is rotatably mounted on a rotation shaft 19 attached to the outer device a.

A drive pin 2Q is press-fitted into one end of this lever 17, and is engaged with an elongated hole 15& formed in the movable plate 15. Further, an elongated hole 17a is formed at the other end of the lever 17, and a drive pin 21 formed on the operating knob 18 is engaged with the elongated hole 17a. The operating knob 18 is slidably mounted in a recess formed in the outer device a. A non-penetrating hole 16a is formed in the fixed plate 16, and a compression spring 29 and a ball 28 are held in the hole 16a and combined with the depressions 15d and 1se formed in the movable plate 15 to form a click mechanism.

The operation of the video camera of this embodiment configured as described above will be explained below. In FIG. 4, the image surface 5a of the electronic viewfinder 6 is located on the image forming surface of the photographing lens, and is ready for use with a projector.

Print "PROJECTORJ 27a" on the position corresponding to the operating knob 18 of the external device a. When using this display means as a camera, print "r CAMERA J 27 b" on the operating knob 18 as shown in FIG. The lever 17 is rotated by a drive pin 21 formed on the operating knob 18, and at the same time moves the movable plate 16 in the direction of the arrow 28 by the pin 2o.
8 is positioned at the position where it bites into the recess ISE. At this time, the photoelectric conversion surface 3a of the image pickup tube 30 is positioned on the image forming surface of the photographic lens, thus indicating a state in which it can be used as a video camera. Note that although the above embodiment has been described using an electronic viewfinder and an image pickup tube, a liquid crystal finder or a solid-state image sensor may also be used. Also,
In the above embodiment, the electronic viewfinder and the image pickup tube are moved. However, the video camera of the present invention is not limited to this. Any device may be used as long as it has the function of selectively positioning the image surface of the image means.

For example, the imaging plane of the photographic lens may be moved and positioned. Alternatively, both the imaging surface of the photographing lens and the photoelectric conversion surface of the photoelectric conversion means or the surface image surface of the image displaying means may be moved and positioned. Furthermore, although the above embodiments have been explained using a separate type video camera, the effects of the present invention will be even greater if it is applied to an integrated video camera that is integrally equipped with a VTR.

Effects of the Invention As is clear from the above explanation, the present invention provides a method in which either the photoelectric conversion surface of the photoelectric conversion means or the image surface of the imaging means is on the same plane as the image forming surface of the photographic lens. Since it is comprised of a moving positioning means for selectively moving and positioning, it can be used as a video projector with a simple switching operation, which is an excellent effect. Furthermore, this effect eliminates the need for connection cords for the monitor TV or video projector 1, and provides the effect that recorded content can be easily played back anywhere, whether indoors or outdoors.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a video camera according to an embodiment of the present invention, FIG. 2 is a configuration diagram of the same in different usage conditions, FIG. 3 is a front view of the moving and positioning means of the video camera, and FIG. FIG. 5 is a right side view of the moving positioning means in different states. 1...Video camera, 2...Photographing lens, 3...Picture tube, 5...Electronic viewfinder, 6゜7...Reflection mirror. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 4

Claims (1)

[Claims] A photoelectric conversion means for converting an optical image of a subject incident on a photographic lens into an electric signal, an image representation means for converting the electric signal into a visible image, and a photoelectric conversion surface of the photoelectric conversion means or a surface of the image representation means. A video camera comprising a moving positioning means for selectively moving and positioning so that one of the image planes is on the same plane as the image forming plane of the photographing lens.