JPH08149347A - Finder for video camera with image display device - Google Patents

Abstract

PURPOSE: To provide a finder for a video camera in which the user feels no fatigue even in the case of image pickup for a long time and the user follows easily an object with easy to see image pattern by providing a lens group by which the user observes an object at a distance closer than a distance of distinct vision and with a removable case containing the lens group and shielding an external light. CONSTITUTION: A video camera main body 1 is provided with an image display device 2 observed by human eyes. On the other hand, a spiral groove is engraved on an outer circumference of a lens holder 5 containing an eyepiece cap 3 made of an elastic material and a lens group 4 and engaged with a projection provided to an inner case 6 and then removable. A fixed knob 8 is fitted to an inner case 6 via a spring 7 and an outer case 9 covering the outside is fitted to the image display device 2 by a mount screw 10. The lens group 4 is used to allow the user to observe an image on the image display device 2 at a distance closer than a distance of distinct vision by a magnification of 0.5 to 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewfinder for a video camera equipped with an image display device.

[0002]

2. Description of the Related Art When using a video camera equipped with an image display device capable of viewing an image being photographed with the naked eye, the user must keep the distance between the screen of this image display device and the eyes about 250 mm for a normal eye. If you can't see clearly.
Therefore, in order to secure this distance, the arm holding the video camera main body 1 is extended as shown in FIG. 5 and supported away from the body, or the video camera main body 1 is placed at a position lower than eye level as shown in FIG. I have to support. Also, when using the above video camera outdoors on a sunny day,
It was necessary to reduce the external light by using the light shielding hood 20 as shown in FIG.

[0003]

However, in the conventional video camera with the image display device, when the arm is extended and supported as shown in FIG. 5, the shoulder of the user is compared to the case where the video camera body is supported closer to the body. Since a large rotational moment is generated, it becomes very tired when shooting for a long time. on the other hand,
If it is supported at a position lower than the eye level as shown in FIG. 6, the line of sight of the user and the shooting direction of the video camera are not in the same direction, which makes it difficult to follow when the subject moves.

In addition, in both cases, when recording and tape-playing outdoors on a sunny day, unless a light-shielding hood as shown in FIG. 7 is attached, external light is reflected on the screen of the image display device, which makes it very difficult to see. . Moreover, even if it attaches, the above-mentioned subject cannot be solved.

The present invention solves the above-mentioned problems of the prior art. By mounting the camera on a video camera with an image display device, fatigue during long-time shooting can be reduced, and even when the subject moves, it is easy to follow, and on a sunny day. An object of the present invention is to provide a viewfinder for a video camera with an image display device in which the screen can be easily viewed even when recording outdoors or playing a tape.

[0006]

In order to achieve this object, a viewfinder for a video camera with an image display device of the present invention is arranged such that an image displayed on the image display surface is located at a position closer than the distance of clear vision from the image display surface. In the image display device of the video camera, a detachable lens group capable of being observed and a housing capable of blocking the external light are provided.

[0007]

Since the lens group can observe at a magnification of 0.5 to 2 times at a position closer than the distance of clear vision, the distance between the screen of the image display device of the video camera and the eyes of the user can be shortened. The user can stabilize the video camera by bringing the main body of the video camera close to the body at the height of the line of sight and supporting not only the hands but also the face. As a result, fatigue can be reduced even when shooting for a long time, and it becomes easy to follow a moving subject. Further, by blocking the outside light by this housing, the screen of the image display device can be easily seen even during outdoor recording on a sunny day during recording and tape reproduction.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 3, the video camera main body 1 includes an image display device 2 which can be viewed with the naked eye. On the other hand, a spiral groove is formed on the outer circumference of the eyepiece cap 3 made of an elastic material and the lens holder 5 holding the lens group 4, and the groove is meshed with the protrusion provided on the inner housing 6 so that it can be attached and detached. A fixed knob 8 is attached to the inner casing 6 via a spring 7, and an outer casing 9 that covers the outside of the inner casing 6 is attached to the image display device 2 by a mounting screw 10.

As shown in FIG. 4, the lens group 4 magnifies the image 12 on the image display device 2 located at a position closer than the clear vision distance 11 (250 mm in the case of emmetropia) by 0.5 to 2 times. It can be observed at.

The operation of the finder for a video camera with an image display device constructed as described above will be described with reference to FIG. By rotating the lens holder 5, the user can change the distance between the lens group 4 and the image display device 2 housed therein because the spiral groove on the outer periphery is engaged with the protrusion of the inner housing 6, and the lens holder 5 is removed. You can also If the inner casing 6 is moved toward the outer casing 9 while pushing the fixing knob 8, the inner casing 6 is moved to the outer casing 9.
It can be stored inside and the overall length can be shortened. To remove the outer casing 9 from the image display device 2, the mounting screw 10 may be removed.

As described above, the viewfinder for a video camera with an image display device according to this embodiment has a distance of 150 mm between the screen of the image display device and the user's eyes, which was conventionally required to be 250 mm for the normal eye.
Since it is suppressed to the following level, the user can support the video camera body 1 at a height of the line of sight at a height of the line of sight without much separation from the body during shooting. This makes it possible to use the video camera in a posture in which fatigue is reduced even when shooting for a long time and the subject can be easily tracked. Further, since it is made of an elastic material, the eyepiece cap 3, the inner casing 6, and the outer casing 9 that easily follow the face block outside light, so that a good photographed image can be confirmed even in bright outdoors.

Furthermore, since the user can set the distance between the lens group 4 and the image display device 2 to his or her own visual acuity, anyone can view the image while focusing on the screen.

Of course, this finder for a video camera with an image display device can be detached from the video camera main body 1 when a recorded tape is reproduced or stored, and the inner casing 6 and the outer casing 9 can be removed without removing. If it is stored inside, the total length of the video camera including the viewfinder for the video camera with an image display device can be shortened, so it is very convenient even when moving during shooting interruption.

Further, when the tape is reproduced outdoors, the lens holder 5 can be removed from the inner housing 6 and used as a conventional light-shielding hood, so that the range of use is very wide.

In the present embodiment, the outer housing 9 and the image display device 2 are mounted by the mounting screws 10. However, this is a method in which both can be fastened to each other with sufficient strength for practical use. Any method may be used.

The means for moving the lens holder 5 and the inner casing 6 relative to each other is not limited to the spiral groove, and the inner casing 6 and the outer casing 9 can be expanded and contracted by elastic means such as bellows or rubber. It is also possible to adopt a method of forming a shrinkable housing.

[0017]

As described above, according to the present invention, a lens group capable of observing at a magnification of 0.5 to 2 times at a position closer than the distance of clear vision, and an image of a video camera which holds this lens group. The display is equipped with a detachable housing that can block out external light, which reduces fatigue even when shooting for long periods of time, and makes it easy to follow a moving subject. It is possible to realize a viewfinder for a video camera with an easy-to-see image display device.

[Brief description of drawings]

FIG. 1 is a sectional view of a viewfinder for a video camera with an image display device according to an embodiment of the present invention.

FIG. 2 is a side view when a user supports a video camera with an image display device having a viewfinder for a video camera with an image display device according to an embodiment of the present invention at the eye level.

FIG. 3 is a perspective view of a viewfinder for a video camera with an image display device and a video camera with an image display device according to an embodiment of the present invention.

FIG. 4 is an optical path diagram of a lens group used in the present invention.

FIG. 5 is a side view of a conventional video camera with an image display device when a user extends his / her arm and supports the video camera.

FIG. 6 is a side view of a conventional video camera with an image display device supported by a user below eye level.

FIG. 7 is a perspective view of a light-shielding hood in the related art.

[Explanation of symbols]

 1 Video Camera Main Body 2 Image Display Device 3 Eyepiece Cap 4 Lens Group 5 Lens Holder 6 Inner Housing 7 Spring 8 Fixing Knob 9 Outer Housing 10 Mounting Screws 11 Clear Distance 12 Images

Claims (4)

[Claims] 1. A lens group capable of observing an image displayed on the image display surface at a position closer than a distance of clear vision from the image display surface, and an image display of a video camera holding the lens group. A viewfinder for a video camera with an image display device, which is equipped with a housing that can be attached to and detached from the device and can block external light. 2. The viewfinder for a video camera with an image display device according to claim 1, wherein the lens group has a structure movable with respect to the housing. 3. The viewfinder for a video camera with an image display device according to claim 1, wherein the housing has a structure capable of expanding and contracting. 4. The viewfinder for a video camera with an image display device according to claim 1, wherein the lens group and the housing have a detachable structure.