JP2563576Y2 - Viewfinder optical axis conversion device for video camera stored in waterproof case - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewfinder optical axis changing device for a video camera housed in a waterproof case.

[0002]

2. Description of the Related Art As shown in FIG. 4, many viewfinders 2a of a video camera 2 are rotatable, and having such a mechanism facilitates various photographing operations. For example, when the video camera 2 is at the eye level of the photographer as shown in FIG. 5A, the viewfinder 2a may be positioned at the solid line position shown in FIG.
As shown in the figure, the video camera 2 is higher than the eye level of the photographer.
When photographing is performed when photographing becomes low (photographing at a low angle), the viewfinder 2a may be adjusted to the position indicated by the two-dot chain line shown in FIG. In FIG. 4, reference numeral 2b denotes a lens unit of the video camera 2, and 2c denotes a microphone for recording audio.

By the way, even if the video camera 2 having such a mechanism is housed in a waterproof case as shown in FIG. 6, it is almost impossible to adjust the rotation of the viewfinder 2a. That is, as shown in FIG. 7, a transparent window 1a is provided at the rear part of the waterproof case 1, from which the photographer can enter the liquid crystal panel 3 in the viewfinder 2a.
I was able to see the video. Reference numeral 4 denotes a lens unit for enlarging an image on the liquid crystal panel 3 so as to make it easier to see, and reference numeral 5 denotes an eye cap detachable from a viewfinder.

[0004]

However, in the above-mentioned conventional example, although no trouble occurs at the time of photographing as shown in FIG. 5A, photographing at a low angle as shown in FIG. It was difficult.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned problems, and is an optical axis conversion device for a viewfinder in a video camera housed in a waterproof case. The optical axis conversion unit for converting the optical axis of the image projected from the image is mounted, and the waterproof case is provided with a transparent window corresponding to the converted optical axis of the image. And an optical axis conversion device for a viewfinder in a video camera.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a first embodiment of an optical axis conversion device for a viewfinder according to the present invention, FIG. 2 is a diagram showing a second embodiment of the optical axis conversion device, and FIG. The third
It is a figure showing an example. The components corresponding to the components described in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

In the optical axis conversion device of the viewfinder of the first embodiment shown in FIG. 1, a detachable adapter (optical axis conversion unit) 6 is mounted on the viewfinder 2a of the video camera 2. The adapter 6 converts the optical axis of an image projected on the liquid crystal panel 3 in the vertical direction, and has a configuration in which a mirror 61 is attached to the adapter housing 60 at an oblique angle of 45 °. The adapter housing 60 has a mounting opening 60a formed on the front surface, a hole 60b formed on the back surface, and a hole 60c formed on the upper surface in alignment with the optical axis of the converted image. On the other hand, in the waterproof case 1, in addition to the transparent window 1a, a transparent window 1b is provided on the upper surface in accordance with the optical axis of the converted image.

By attaching the adapter 6 to the viewfinder 2a and storing the video camera 2 in the waterproof case 1,
The photographer can see the image on the liquid crystal panel 3 from the transparent window 1b, and, as shown in FIG. 5B, shoots when the video camera 2 is lower than the photographer's eyes (at a low angle). Shooting). By removing the adapter 6 from the viewfinder 2a and then storing the video camera 2 in the waterproof case 1, the photographer can also see the image on the liquid crystal panel 4 from the transparent window 1a, as shown in FIG. In addition, it is also suitable for shooting when the video camera 2 is at the height of the photographer's eyes.

If the mirror 61 is made rotatable about the fulcrum A and this rotation operation can be performed from the outside of the waterproof case 1, the mirror 61 can be moved in a solid line when photographing at a low angle. By setting the position, and otherwise setting it to the position indicated by the two-dot chain line, it is not necessary to attach or detach the adapter 6 as described above.

Since such a viewfinder optical axis conversion device is used, even if the viewfinder 2a of the video camera 2 can hardly rotate in the waterproof case 1, it is easy to take a picture at a low angle, which is very convenient. Needless to say, there is an advantage that the design of the video camera 2 does not need to be changed, and the design change of the waterproof case 1 is very small.

Next, in the optical axis changing device of the view finder according to the second embodiment shown in FIG. 2, the detachable adapter 6 has a structure in which a half mirror 62 is mounted at an angle of 45 ° in an adapter housing 60. It was done. LCD panel 3
The image projected on the half-mirror 62 is divided into an image that passes through the half mirror 62 as it is and an image that is converted upward by the half mirror 62.
The image on the liquid crystal panel 4 can be viewed from the computer.

In the first and second embodiments, since a mirror is used, there is a demerit that the image viewed from the transparent window 1b at the time of photographing at a low angle is turned upside down to make it difficult to see.

Therefore, in the optical axis changing device of the view finder of the third embodiment shown in FIG. 3, the detachable adapter 6 has a configuration in which a well-known pentagonal prism 63 is mounted in an adapter housing 60. In this case, the transparent window 1
There is a great advantage that the top and bottom of the image viewed from b does not reverse and the image on the liquid crystal panel 3 is easy to see.

[0015]

As can be seen from the above description, in the optical axis conversion device of the viewfinder in the video camera housed in the waterproof case according to the present invention, even if the viewfinder of the video camera can hardly rotate in the waterproof case, This makes it easier to shoot when the video camera is lower than the photographer's eye level (low-angle shooting), making it extremely convenient and without changing the design of the video camera. There is a great advantage that the design change of the waterproof case is very few.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of an optical axis conversion device of a viewfinder according to the present invention.

FIG. 2 is a diagram showing a second embodiment of the optical axis conversion device.

FIG. 3 is a diagram showing a third embodiment of the optical axis conversion device.

FIG. 4 is a diagram showing a video camera.

FIGS. 5A and 5B are diagrams showing a shooting state.

FIG. 6 is a view showing a waterproof case.

FIG. 7 is a diagram illustrating a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterproof case 1b Transparent window 2 Video camera 2a Viewfinder 6 Adapter (optical axis conversion part)

Claims (1)

(57) [Scope of request for utility model registration] An optical axis conversion device for a viewfinder in a video camera housed in a waterproof case, wherein an optical axis conversion unit for converting an optical axis of an image projected from the viewfinder is mounted on the viewfinder of the video camera. On the other hand, a transparent window is provided in the waterproof case corresponding to the optical axis of the converted image, wherein the viewfinder optical axis converting device in the video camera accommodated in the waterproof case.