JPH09130829A - Stereoscopic photographing adapter for video camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter for photographing a video which can be integrate-visualized without exclusive spectacle by means of a home video camera. SOLUTION: A first mirror 2 inclining the optical axis and its normal at 30 to 60 angular degrees to the right or left to the optical axis of the video camera lens 1 is arranged by facing to the side of the optical axis and the side of the video camera lens 1. A second mirror 3 inclining the optical axis and its normal at 30 to 60 angular degrees on the opposite side by inserting the optical axis is arranged by facing to the opposite side of the optical axis and the video camera lens 1. In addition a mechanism for adjusting a distance between the mirrors and the inclinations of the mirrors is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic photographing adapter mounted on a home home video camera for use.

[0002]

2. Description of the Related Art Conventionally, in the field of photography, stereoscopic photography has been performed by taking photographs corresponding to the left and right eyes of humans. 3D camera adapter, 2 for 3D shooting only
Eye cameras, adapters for dividing the field of view for disposable cameras, etc. have been commercialized and are commercially available. Most of the products on the market divide the photo into two parts, the right eye screen is shown on the right side of the photo, and the left eye screen is shown on the left side of the photo. Special glasses are used for stereoscopic viewing. Or the right eye was used to see the right screen and the left eye was used to see the left screen.

[0003]

There is a problem in applying the above-described stereoscopic photographing adapter technology for a camera to a video camera. First, in the case of a photograph, the normal size is 9x
The size is about 12 cm, which is suitable for viewing the right screen with the right eye and the left screen with the left eye, but in the case of a video camera, the TV normally used for playback is a 14-inch TV with a width of about 20 × 30 cm, which is about the width of the eye. On the other hand, in order to see the right screen with the right eye and the left screen with the left eye, both eyes must be turned outward, which is inconvenient for an ordinary person. Therefore, special glasses that combine mirrors and prisms are indispensable. However, it is difficult to wear the special glasses, and they are often lost, so it is difficult to handle them, so a system that allows the naked eye to see is desirable.

Secondly, in the case of a video camera, unlike a photograph, it is a moving image and the viewing time is longer than that of a photograph, so that the eyes are easily tired. In particular, there is an individual difference in the distance between both eyes, and if the distance between the positions where the two eyes are in contact with the eyes of the viewer is different during shooting, eye fatigue is caused. Third, in the case of video cameras, zoom is often used during shooting. When using the zoom, if the mirror of the adapter is fixed, there will be a problem that the left and right screens are different.

[0005]

The present invention has been made to solve these problems. It will be described step by step. 1. In order to realize autostereoscopic viewing even on a TV that is larger than the eye width, the image of the right eye is projected on the left and the image of the left eye is projected on the right. For that purpose, the video camera lens 1
The optical axis and its normal to the right or left of the optical axis of
The first mirror 2 tilted by about 60 degrees is arranged toward the optical axis side and the video camera lens 1 side, and the second axis is tilted about 30 to 60 degrees with respect to the optical axis on the opposite side with the optical axis sandwiched. The mirror 3 is arranged toward the optical axis side and the side opposite to the video camera lens 1.

[0006] 2. In order to reduce eye fatigue, a mechanism 7 for adjusting the distance between the first mirror 2 and the second mirror 3 is provided so that the distance can be adjusted according to the eye width of the viewer. 3. Inclination adjusting mechanism 8 with respect to the optical axis of the first mirror 2 or the second mirror 3 to accommodate the zoom of the video camera
Further, the adjustment mechanism is driven by the motor 4, and an adjustment volume 5 for varying the drive speed of the drive motor 4 is further provided to match the zoom speed of the video camera. This is a stereoscopic photographing adapter for a video camera in which the drive switch 9 is a touch sensor 6 attached near the zoom switch 10 of the video camera.

[0007]

[Action]

1. A first mirror 2 in which the optical axis and its normal line are tilted approximately 30 to 60 degrees to the right or left of the optical axis of the video camera lens 1.
Is arranged toward the optical axis side and the video camera lens 1 side, and the optical axis and its normal are approximately 30 to 6 on the opposite side with the optical axis interposed.
Since the second mirror 3 tilted by 0 degrees is arranged toward the optical axis side and the opposite side of the video camera lens 1, for example, when the first mirror 2 is arranged on the right side of the optical axis, the image on the left side of the optical axis is displayed. Is recorded directly on the left side of the screen without passing through a mirror or the like, but on the right side of the screen the image on the right side of the optical axis is reflected by the second mirror 3 on the left side of the optical axis and further reflected by the first mirror 2 on the right side. Will be recorded on.

Since the second mirror 3 is on the left side of the lens and plays the role of the left eye, the image of the left eye is recorded on the right side of the screen, and the image of the video camera lens 1 corresponding to the right eye is recorded on the left side of the screen. . The same applies to the case where the first and second mirrors are horizontally reversed. By doing this, even if the playback screen is large, it is possible to view the image for the right eye with the right eye and the image for the left eye with the left eye (called cross view) by making the eye close enough when viewing. It is possible to play and view stereoscopic video images without the need to wear glasses. Of course, it is possible to see it with special glasses equipped with mirrors that fold the line of sight inward.

[0009] 2. Since the mechanism 7 for adjusting the distance between the first mirror 2 and the second mirror 3 is provided, the width between the mirrors 2 and 3 can be adjusted to the distance according to the width of the eyes of the viewer, so that an image with less fatigue can be obtained. Can be

3. First mirror 2 or second mirror 3
Since the tilt adjusting mechanism 8 with respect to the optical axis is provided, the mirror 2 or 3 can be adjusted so that when zooming is performed on the video camera side, the left and right of the two-divided image are captured in the same range after zooming. Further, by driving the adjusting mechanism 8 with the motor 4, the mirror can be adjusted more smoothly.

Further, since the adjusting volume 5 for varying the drive speed of the drive motor 4 is provided, the speed of changing the angle of the mirror 2 or 3 can be matched with the zoom speed of the video camera, and the zoom switch 10 and the motor 4 are driven. By operating the switch 9 at the same time, it is possible to capture the same range for each of the two divided images even during zooming, so that the stereoscopic image during zooming can be enjoyed. Furthermore, by using the touch sensor 6 attached to the zoom switch 10 of the video camera as the drive switch 9 of the motor 4, it is possible to save the trouble of operating the zoom switch 10 and the mirror adjustment switch 9 at the same time, without being particularly conscious of the operation. It is possible to perform a zoom operation of a stereoscopic image.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a principle diagram of the optical system of the present invention. Reference numeral 1 is a video camera lens, 2 is a first mirror, and 3 is a second mirror. The normal line of the first mirror 2 is tilted by 60 degrees with respect to the optical axis of the video camera lens 1, and the normal line of the second mirror is tilted by 45 degrees. When the angle of view of the video camera lens 1 is 30 degrees on one side, outside light is directly incident on the lens 1 in the range of 30 degrees on the left side of the video camera lens 1 without going through a mirror. Right side 3
In the range of 0 degrees, the range of 30 degrees on the left side is reflected by the second and first mirrors 3 and 2 to enter.

At this time, the light ray incident on the right side of the lens 1 has the same angle range as the light ray incident on the left side of the lens 1, but the second mirror 3 is separated from the lens 1 by about 65 mm to the left, so that the role of the left eye. Therefore, the light ray incident on the left side of the lens 1 serves as the right eye. As described above, the image for the left eye is recorded in the right half and the image for the right eye is recorded in the left half.

2 and 3 are explanatory views when zooming is performed. For example, when the 2 × zoom is performed, the shooting angle of view is halved, and in the example of FIG. 1, it is 15 degrees on one side. When the angle of view from 30 degrees to 15 degrees on one side remains, the angle of view remains on the right side of the screen on the left side, but remains on the left side of the screen on the right side. If the left and right screens do not show the same angle range, stereoscopic vision cannot be achieved, so it is necessary to change the mirror angle to make the left and right angles of view the same.

FIG. 2 shows an example in which the angle of view is adjusted by changing the second mirror 3. By changing the second mirror 3 by 7 or 5 degrees, the left and right photographing ranges become the same, but the distance of the center line of each angle of view increases. FIG. 3 shows an example in which the angle of view is adjusted by changing the first mirror 2. Also at this time, the mirror 2 is 7.5.
Change. At this time, the distance of the center line is almost the same. Therefore, it is desirable to change the first mirror 2, but the experimental result showed that there was no great discomfort even if the second mirror 3 was changed.

FIG. 4 shows a first mirror 2 and a second mirror 3.
In the example in which the inclination of is changed, the normal line of the first mirror 2 is inclined 45 degrees with respect to the normal line of the video camera lens 1, and the normal line of the second mirror 3 is 30 degrees.
It is tilted. Even with such a combination, the desired operation and effect do not change, so that it can be freely selected according to the specifications of the outer shape.

FIG. 5 shows a commercially available video camera 12 of Fuji Photo Film Co., Ltd. under the trade name of Simple High Eight.
The stereoscopic imaging adapter according to the present invention is attached to the. On the left side of the optical axis when viewed from the lens side of the video camera lens 1, a first mirror 2 of about 2 cm square is fixed at an angle of about 60 degrees with the optical axis. In this embodiment, the first mirror 2
The holding tool 11 for holding is fixed to the main body 12 with double-sided tape or the like. A second mirror 3 of about 12 × 5 cm from the point on the right side of the optical axis of the lens 1 by about 30 mm is fixed with an inclination of about 45 ° with respect to the optical axis.

The second mirror holder 13 can be detached because it needs to be removed when the video tape is taken out. For example, the strap mounting metal fitting of the main body serves as a fulcrum, and the corresponding portion is fitted into the concave portion on the side surface of the main body. It is fixed. This embodiment is the simplest one without any adjusting mechanism.

As a result, light is directly incident on the right side of the lens 1 without passing through a mirror or the like and is recorded on the left side of the screen, but the left side of the lens 1 is reflected by the second mirror 3 on the right side and further on the left side. The light reflected by the first mirror 2 enters and is recorded on the right side of the screen. Since the second mirror 3 is on the left side of the lens 1 and plays the role of the left eye, the image of the left eye is recorded on the right side of the screen, and the image of the video camera lens directly hitting the right eye is recorded on the left side of the screen.

By doing so, even if the reproduction image orientation is large, it is possible to see the image for the right eye with the right eye and the image for the left eye with the left eye by making the eye close enough at the time of viewing. You can play and view stereoscopic video images without the hassle of wearing them. Of course, it is also possible to see it with special eyeglasses equipped with mirrors with the line of sight inside.

FIG. 6 shows a second embodiment, which is a commercially available model of Handycam TR-1 manufactured by Sony Corporation, to which the stereoscopic photographing adapter 20 according to the present invention is attached. The entire adapter 20 is fixed with a tripod fixing screw 21. In this embodiment, the position of the second mirror can be moved by the screw 22 shown. Further, the second mirror 3 is provided with a tilt adjusting mechanism 8, the structure of which is such that the substrate of the second mirror 3 is supported by a hinge 81 and is pulled by a spring 82, and is pushed by the stepping motor 4 to adjust the tilt. It is like this.

The stepping motor 4 uses a stepping motor SPS20 manufactured by Copal Electronics and DM502X is used as a dedicated driver. The DM502X is provided with a speed variable trimmer 5, and a driver is inserted through the hole of the driver box 23 for adjustment. The driver box 23 also accommodates four AA dry cells for driving the motor. The DM502X has shaft forward and reverse buttons, but these are pulled out by a lead wire and taken out from the board box and connected to the zoom switch 10 section of the TR-1.

FIG. 7 is a view of the zoom switch 10 portion of the TR-1. A touch sensor 6 is attached to both sides of the TR-1 zoom switch portion 10 with a double-sided tape. The touch sensor 6 advances the shaft of the motor 4. , Control the reverse. When the photographer operates the zoom button 10, the touch sensor 6 which is the mirror adjustment switch 9 is inevitably hit, so that the mirror angle adjustment according to the zoom can be performed together with the fine adjustment volume 5 adjustment described above.

Needless to say, the touch sensor may be mounted on the driver box and operated with the left hand without using this method. Note that in TR-1, if autofocus, which is one of the functions, is used, the focus is on the tip of the first mirror 2, and therefore autofocus cannot be used. Therefore, since it is necessary to operate the manual focus knob 24 provided at the bottom of the lens 1, this portion of the adapter 20 is left open.

[0025]

As described in detail above, according to the present invention, 1. A first mirror 2 in which the optical axis and its normal line are tilted approximately 30 to 60 degrees to the right or left of the optical axis of the video camera lens 1.
Is arranged toward the optical axis side and the video camera lens 1 side, and the optical axis and its normal are approximately 30 to 6 on the opposite side with the optical axis interposed.
Since the second mirror 3 tilted by 0 degrees is arranged facing the optical axis side and the opposite side of the video camera lens 1, for example, when the first mirror 2 is arranged on the right side of the optical axis, the image on the left side of the optical axis is displayed. Is recorded on the left side of the direct installation screen without passing through a mirror or the like, but the right side of the optical axis is reflected by the second mirror 3 on the left side of the optical axis and further reflected by the first mirror 2 on the right side of the screen. Recorded on the right.

Since the second mirror 3 is on the left side of the lens and plays the role of the left eye, the image of the left eye is recorded on the right side of the screen, and the image of the video camera lens 1 directly hitting the right eye is recorded on the left side of the screen. . The same applies to the case where the first and second mirrors are horizontally reversed. By doing so, even if the playback screen is large, it is possible to see the image for the right eye with the right eye and the image for the left eye with the left eye by looking away enough at the time of viewing, and without wearing special glasses. You can play and watch 3D video images. Of course, it is also possible to see it with special eyeglasses equipped with mirrors with the line of sight inside.

2. Since the mechanism 7 for adjusting the distance between the first mirror 2 and the second mirror 3 is provided, the width between the mirrors can be adjusted to a distance according to the width of the eyes of the viewer, and an image with less fatigue can be obtained. You can

3. First mirror 2 or second mirror 3
Since the tilt adjusting mechanism 8 with respect to the optical axis is provided, the mirrors 2 and 3 can be adjusted so that when zooming is performed on the video camera side, the left and right of the two-divided image are captured in the same range after zooming. Further, by driving the adjusting mechanism 8 with the motor 4, the mirror can be adjusted more smoothly.

Further, since the adjusting volume 5 for varying the drive speed of the drive motor 4 is provided, the speed of changing the angle of the mirror can be matched with the zoom speed of the video camera, and the zoom switch 10 and the motor drive switch 9 can be simultaneously operated. By operating it, it is possible to capture the same range for each of the two divided images during zooming, and enjoy the stereoscopic image during zooming. Further, the drive switch 9 of the motor 4 is replaced with the touch sensor 6 attached to the vicinity of the zoom switch 10 of the video camera.
Therefore, it is possible to save the trouble of operating the mirror adjustment switch 9 and the mirror adjustment switch 9 at the same time, and it is possible to perform the zoom operation of the stereoscopic image without being conscious of the operation.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is an explanatory diagram of mirror angle adjustment according to the zoom of the present invention.

FIG. 3 is an explanatory view of mirror angle adjustment according to the zoom of the present invention.

FIG. 4 is an explanatory view of another mirror combination example of the present invention.

FIG. 5 is an external view of the first embodiment of the present invention.

FIG. 6 is an external view of a second embodiment of the present invention.

FIG. 7 is a partial explanatory view of the second embodiment of the present invention.

[Explanation of reference numerals] 1 video camera lens 2 1st mirror 3 2nd mirror 4 motor 5 adjustment volume 6 touch sensor 7 distance adjustment mechanism 8 tilt adjustment mechanism 9 mirror tilt adjustment switch (motor drive switch) 10 zoom switch 11 first mirror Holder 12 Simple High Eight 13 Second Mirror Holder 20 TR-1 Adapter 21 Tripod Fixing Screw 22 Distance Adjusting Mechanism Screw 23 Driver Box 24 Manual Focus Knob 25 TR-1 81 Hinge 82 Spring

Claims (6)

[Claims] 1. A first mirror 2 having an optical axis and a normal line inclined to the right or left of the optical axis of the video camera lens 1 by about 30 to 60 degrees is directed toward the optical axis side and the video camera lens 1 side. Place the optical axis on the opposite side of the optical axis and set the optical axis and its normal about 3
A stereoscopic photographing adapter for a video camera, wherein a second mirror 3 tilted by 0 to 60 degrees is arranged toward the optical axis side and the opposite side of the video camera lens 1. 2. The stereoscopic photographing adapter for a video camera according to claim 1, further comprising a mechanism 7 for adjusting a distance between the first mirror 2 and the second mirror 3. 3. A stereoscopic photographing adapter for a video camera according to claim 1, further comprising a tilt adjusting mechanism 8 for the first mirror 2 or the second mirror 3 with respect to the optical axis. 4. The stereoscopic photographing adapter for a video camera according to claim 3, wherein the tilt adjusting mechanism is driven by a motor 4. 5. A stereoscopic photography adapter for a video camera according to claim 4, further comprising an adjusting volume 5 for varying the drive speed of the drive motor 4 of the tilt adjusting mechanism. 6. The stereoscopic photographing adapter for a video camera according to claim 4, wherein the drive switch 9 of the motor 4 for driving the tilt adjusting mechanism is a touch sensor 6 attached near the zoom switch 10 of the video camera.