JPH0416992B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention is a video camera characterized in that a subject located behind a cameraman is simultaneously photographed at a corner of an image taken by the video camera. The present invention relates to a device that simultaneously photographs objects.

(b) Prior art and problems to be solved by the present invention
The device for simultaneously photographing objects behind with a video camera according to Publication No. 2003-126200 is a device in which a lens hood is rotatably attached to the tip of a camera head of the video camera that moves forward and backward while rotating, and a lens hood is provided protruding from the outer surface of the lens hood. The guide pin is engaged with the rotation prevention guide fitting of the lens hood attached to the front of the camera body, a notch is provided on one side of the lens hood, and a support is provided on the inside of the lens hood corresponding to this notch. The outer mirror and the inner mirror are pivoted perpendicular to the axis, the outer mirror protrudes from the notch to the outside of the lens hood, and the inner mirror is adjusted diagonally to the axis of the camera head so that it can be positioned behind the photographer. This device is designed to simultaneously capture images of objects located at the corners of the image captured by a video camera.As mentioned above, this device has guide pins protruding from the outside of the lens hood, and the front of the camera body. Moreover, since it is necessary to attach a guide fitting for preventing rotation of the lens hood that engages the guide pin, the structure tends to be complicated.

(C) Means for Solving the Problems In view of the above-mentioned conventional drawbacks, the present invention provides a guide pin protruding from the outer surface of a lens hood, and a guide fitting for preventing rotation of the lens hood that engages this guide pin. In order to be able to simultaneously take pictures of objects behind the camera without using the lens, a lens hood attached to the camera body is fitted to the tip of the camera head of the video camera, and an opening on one side of the lens hood is inserted into the camera head. Mirrors are installed on the outside and inside of the lens hood using the mounting shaft, and the outside mirror protrudes to the outside of the lens hood, while the inside mirror is adjusted diagonally with respect to the axis of the camera head. The object located behind the camera is simultaneously photographed at the corner of the image taken by the video camera.

(d) Embodiments and effects Embodiments of the present invention will be explained below with reference to the drawings.

In the figure, reference numeral 1 denotes a camera head in a video camera provided on the front side of the camera body 2, which has the function of focusing the lens by moving forward and backward while rotating.

3 is a lens hood consisting of a cylindrical part 5 which rotatably connects a front half and a rear part at an intermediate connecting part 4, and a rectangular cylindrical part 6 on the tip side provided integrally with this cylindrical part; By fitting the dovetail-shaped protrusion 7 provided at the lower part of the edge of the cylindrical portion 5 into the dovetail groove 8 provided on the upper surface of the lower front end of the camera body 2, the cylindrical portion is attached to the camera body 2. 5 is fitted to the tip of the camera head 1.

Reference numerals 9 and 10 denote outer and inner mirrors, and these mirrors are attached to a mounting ring 12 which is rotatably provided by inserting the edge of a circular opening 11 opened on one side of the rectangular tube part 6 of the lens hood 3. An outer mounting shaft 13 and an inner mounting shaft 13' are provided vertically along the end surface of the lens hood on the front and back sides, and the outer mounting shaft 13 has a mounting plate 1.
4 is fixed, the outer mirror 9 is affixed thereto, the mounting plate 14' is fixed to the inner mounting shaft 13', and the inner mirror 10 is rotatably mounted thereon by the shaft 15.
In addition, the lower part of the inner mounting shaft 13' extends downward to form a long hole 16 provided at the six corners of the rectangular cylinder part of the lens hood.
is passed through the lens hood 3, and a knob 17 is provided at the lower end of the lens hood 3, so that the opening 11 is inserted between the openings 11 and the knobs 17 are provided on the outside and inside of the lens hood 3, respectively.

Since the present invention is configured as described above, now,
When using the device according to the present invention, look through the viewfinder of the video camera, direct the camera head 1 toward the subject located in front of the cameraman, that is, the lion a in the zoo, and look at the outside mirror. Inner mirror 1 through 9
The subject located behind the cameraman at 0, i.e.
After protruding the outer mirror 9 to the outside of the lens hood 3 at an arbitrary angle so that the person b watching the lion a is reflected, and adjusting the inner mirror 10 diagonally to the axis of the camera head 1, start the video. By operating the switch and taking pictures, as shown in Figure 4 of the drawings, it is possible to simultaneously record a person B, who is located behind the cameraman, in the corner of the image of lion A being photographed by the video camera. in,
However, since two mirrors 9 and 10 are used, it is possible to photograph a subject located behind the cameraman in a correct, non-symmetrical form.

In the above embodiment, the lens hood 3, the mounting ring 12, and the inner mirror 10 can each be rotated, so by adjusting the rotation of these components, the desired subject located behind the cameraman can be photographed with the video camera. This allows the image to be photographed correctly at a desired position.

However, the present invention is not limited to allowing the lens hood 3, the mounting ring 12, and the inner mirror 10 to rotate, and it is also possible to have a structure in which they cannot rotate.

In this case, the mounting shafts 13, 13' may be directly mounted on the lens hood 3 without using the mounting ring 12.

Furthermore, the mounting shafts 13, 13' of the outer and inner mirrors 9, 10 are not limited to being provided separately, but one mounting shaft can be used to mount the outer and inner mirrors 9, 10. In some cases, it may be installed.

(E) Effects of the Invention The present invention uses the outside mirror and the inside mirror of the lens hood as described above, so that the subject located behind the cameraman can be simultaneously captured in the corner of the image shot by the video camera. Since it is possible to take pictures, it is possible to economically take special pictures without using two video cameras and editing equipment as in the conventional case. There is no need to protrude a guide pin on the outer surface of the lens hood, and there is no need to install a guide fitting for preventing rotation of the lens hood that engages the guide pin on the front surface of the camera body, so the structure can be simplified. It is something.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of the device according to the invention. Figure 2 is a partially cutaway front view of the same as above. Figure 3 is a plan view of the same as above. FIG. 4 is a front view showing an example of an image taken using the device according to the present invention. In the figure, 1 is the camera head, 2 is the camera body, and 3
1 is a lens hood, 9 and 10 are mirrors, 11 is an opening, and 13 is a mounting shaft.

Claims (1)

[Claims] 1 Fit the lens hood attached to the camera body to the tip of the camera head of the video camera,
Mirrors are provided on the outside and inside of the lens hood by inserting the opening on one side of the lens hood and using a mounting shaft, with the outside mirror protruding to the outside of the lens hood, and the inside mirror being attached to the shaft of the camera head. A device for simultaneously photographing objects behind a cameraman with a video camera, characterized in that by adjusting the cameraman's position diagonally with respect to the heart, objects located behind the cameraman are simultaneously photographed in the corner of the image shot by the video camera. .