JP2958135B2 - Reversal type stereo viewer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereo viewer, and more particularly to a reversal type stereo viewer in which a film having a pair of frames at right and left positions in the width direction can be moved up and down or left and right.

[0002]

2. Description of the Related Art Conventionally, this type of reversal type stereo viewer has been configured as shown in FIGS. FIG.
Shows the appearance of a conventional reversal type stereo viewer. A pair of right and left eyepiece lenses 12 are attached to one side of a case 10 at an interval of about 65 mm (L ₂ ) in accordance with the interpupillary distance. An operation dial 14 is disposed at the upper and lower positions on the side of the case 10, and the film disposed inside the case 10 can be moved by rotating the operation dial 14.

FIG. 10 is a perspective view of the film. The film 16 is wound on a take-up reel 18 connected to the operation dial 14 at both upper and lower ends so as to be vertically movable. ing. Further, on the film 16, a pair of frames 20 photographing the same subject at slightly different positions from left and right in the width direction are arranged. The pair of frames 20 are arranged so that the top, bottom, left and right of the subject are aligned, and the photographic film is cut and attached so that the frame photographed from the left side is located on the left side and the frame photographed from the right side is located on the right side. In addition, when re-attaching, the top and bottom and left and right of the subject of each frame 20 are arranged so as to be correctly positioned vertically and horizontally. Therefore, as shown in the cross-sectional view of the stereo viewer of FIG. 11, the distance between the pair of eyepiece lenses 12 and the pair of
When the frame 20 of the film 16 is visually recognized through the eyepiece lens 12 in a state where the intervals are matched, stereoscopic observation is possible.

[0004]

However, in the conventional stereo viewer, as described above, the film 1
The subject photographed on 6 is turned upside down and left and right, and the film must be arranged at the left and right positions in accordance with the interpupillary distance. There was a problem that it was very troublesome and troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a reversal type stereo viewer capable of easily enjoying a stereo view of a film without having to cut and reattach the film. Is to do.

[0006]

In order to achieve the above object, a reversal type stereo viewer according to the present invention comprises a pair of frames which are obtained by photographing the same subject while slightly changing the direction from the left and right, to the right and left opposite positions in the width direction. The film having a pair of left and right eyepiece lenses attached to the film facing surface of the case and the film is disposed so as to be movable while being supported by a pair of winding shafts provided at predetermined positions in the case. To
An even number of reflecting mirrors are provided so as to guide the subject image of each frame on the film to the above-mentioned lens at the left and right opposite positions.

[0007]

According to the above arrangement, a pair of frames are disposed at left and right opposite positions in the film width direction, and an image of each frame is guided to the left and right reversed lenses via an even number of reflecting mirrors. Therefore, the film can be used as it is by turning it upside down without changing the front and back, and it is possible to easily attach the film without cutting and pasting the photographic film as in the related art.

[0008]

FIG. 1 is an explanatory view showing the structure of a reversal type stereo viewer according to a first embodiment, FIG.
FIG. 3 is a perspective view of the film. As shown in FIG. 2, this reversal type stereo viewer has a projection 22 extending in the width direction formed at the center of one surface of a case 22 having a hollow inside, and a pair of left and right eyepiece lenses is provided on the front surface of the projection 24. 26 are attached. An operation dial 28 is attached to the side surface of the case 22 at the upper and lower positions, and the upper and lower operation dials 28 are engaged with a center hole of a take-up reel 32 on which the film 30 is wound and supported. By operating the operation dial 28, the film 30
Can be wound up and down.

In the film 30, a pair of frames 34 and 36 obtained by photographing the same subject from the left and right by slightly changing the position (direction) with a stereo camera are located at right and left opposite positions in the width direction. That is, the film 30 is photographed using a stereo camera 38 as shown in FIG. This stereo camera 38 is a brownie type camera,
A pair of objective lenses 40 are arranged at right and left positions at an interval of about 30 mm, and when photographed using this camera 38, the film 30 is viewed from the right side as shown in FIG. Frame 34 is located on the right side, and frame 36 viewed from the left side is located on the left side.
Numeral 36 indicates that the subject is upside down, left and right. Then, the film 30 in this state is turned upside down without changing the front and back, and the case 22 of the stereo viewer is turned over.
To be placed inside. In this state, as shown in FIG. 6, the tops 34 and 36 are normal in the up, down, left, and right directions, but the top 34 seen from the right side is on the left, and the top 36 seen from the left side is in the normal state. It will be located on the right. In this case, the film 30 is, for example without disconnecting the ones having a width of about 57 mm, and used as it is, the distance between the centers L ₁ of each frame 34, 36 has a approximately 30 mm.

Further, as shown in FIG. 1, between the pair of lenses 26 and the film 30, two reflection mirrors 42 for guiding a frame 36 located on the right side of the film 30 to the left lens 26, 44 and two reflecting mirrors 46 and 48 for guiding the frame 34 located on the left side to the lens 26 on the right side are provided, and the frame 34 photographed from the right side from the lens 26 on the right side.
However, the frame 36 photographed from the left side can be seen from the left lens 26 at a correct position. In this case, the center-to-center distance L ₂ of the pair of lenses 26, to match the interpupillary distance has become, for example, about 65 mm, for wider than the center-to-center distance L ₁ of the frame 34, 36 of about the 30 mm, the reflection The positions of the mirrors 44 and 48 are arranged at positions corresponding to the respective lenses 26 to deal with the lenses 26 and the tops 34 and 36 having different center-to-center distances.

Next, the operation of the first embodiment will be described. First, when creating a film 30 to be viewed with a stereo viewer, an object 50 is photographed using a camera 38 as shown in FIG. In this case, since the camera 38 has a pair of objective lenses 40 spaced apart in the left-right direction, each objective lens 40 forms a pair of frames 34 and 36 in a stereo relationship at the left and right positions in the width direction of the film 30. Then, the film 30 is developed and kept in a state where it can be observed with a stereo viewer. In the film 30 in this case, the frame 34 viewed from the right side is located on the right side, and the frame 36 viewed from the left side is located on the left side. .

Next, the film 30 photographed as described above is set on a stereo viewer for observation. In this setting, the top and bottom positions of the film 30 are reversed without changing the front and back of the film 30, and each frame is viewed. The subject is placed in the case 22 with the upper, lower, left and right sides of the subject in the normal state. In this state, the frame 34 shot from the right
Is located on the left side, and the frame 36 photographed from the left side is located on the right side, and the left and right sides are reversed.

However, when looking into the lens 26 of the stereo viewer in this state, the top and bottom, left and right of the subject in each of the frames 34 and 36 are kept by the reflecting mirrors 42, 44 and 46 and 48, and the frame 36 located on the right side is kept. From the left lens 26, the top 34 located on the left is
, And can be observed as a normal state. Therefore, stereo viewing can be easily achieved by simply turning the film 30 upside down without cutting or pasting the film 30 and without changing the front and back.

The present invention can be applied not only to the reversal type viewer of the type in which the film is moved in the vertical direction as shown in the first embodiment, but also to the type in which the film is moved in the horizontal direction. FIG. 7 shows the second embodiment of FIG.
This will be described with reference to FIG. As shown in FIG.
An eyepiece lens 126 is mounted on the front surface of the case 122, and an operation dial 128 for moving the film is mounted on the upper surface of the case 122. A film 130 shown in FIG. 7B is wound on the operation dial 128 so as to be movable in the left-right direction. The film 130 has a pair of frames 134 and 136 photographing the same subject. Are lined up, but this top 1
34 and 136 are arranged right and left upside down.

FIG. 8 shows the internal structure of FIG. 7 and, similarly to the first embodiment, the pair of lenses 12
6 and the film 130, two reflecting mirrors 142 and 144 for guiding the frame 136 located on the right side of the film 130 to the left lens 126 and the frame 134 located on the left side.
Mirrors 146 and 14 for guiding the light to the right lens 126
8 are provided. Accordingly, the frame 134 photographed from the right side is output from the right lens 126,
Then, the frame 136 photographed from the left side can be observed at a correct position.

[0016]

As described above, according to the present invention,
A pair of frames are arranged at opposite positions in the width direction of the film, and the image of each frame is guided to the lens at the opposite position via an even number of reflecting mirrors. Can be used as it is as a viewer film, eliminating the need to cut and re-paste the photographic film as in the past, can be set easily, and has the effect of being able to enjoy stereo viewing easily. is there.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a reversal type stereo viewer according to a first embodiment of the present invention.

FIG. 2 is an external perspective view of the reversal type stereo viewer of FIG. 1;

FIG. 3 is a perspective view of a film used in the first embodiment.

FIG. 4 is a perspective view showing a state of a camera used for film shooting of the first embodiment.

FIG. 5 is an explanatory diagram showing a state of a frame shot by a camera.

FIG. 6 is a perspective view showing a state of a frame when a film is set on a stereo viewer.

FIG. 7 is an external perspective view of a stereo viewer according to a second embodiment.

FIG. 8 is an explanatory diagram showing a configuration of a second embodiment.

FIG. 9 is an external perspective view showing a conventional stereo viewer.

FIG. 10 is a perspective view showing a state of a film used for a conventional stereo viewer.

FIG. 11 is a cross-sectional view of the stereo viewer of FIG. 9;

[Explanation of symbols]

14, 28, 128 ... operation dial, 18, 32 ... take-up reel, 22, 122 ... case, 26, 126 ... lens, 30, 130 ... film, 34, 36, 134, 136 ... frame, 42, 44, 46 , 48, 142, 144, 146, 1
48… Reflector.

Claims (1)

(57) [Claims] 1. A film having a pair of frames, which are obtained by photographing the same subject in slightly different directions from the left and right, at opposite positions in the width direction, is supported by a pair of winding shafts provided at predetermined positions in a case and moved. Between the pair of left and right eyepiece lenses attached to the film-facing surface of the case and the film, so that the subject images of the respective frames on the film are guided to the left and right reversed lenses. A reversal type stereo viewer with an even number of reflectors.