JP2553767Y2 - 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 simple stereo viewer for stereoscopically observing a set of two stereo photographs with a binocular lens.

[0002]

2. Description of the Related Art A stereo viewer is a device for observing a subject in three dimensions by viewing two left and right photographs taken with a camera at different positions using a binocular lens. Is created by a method of shooting with a dedicated stereo camera equipped with two shooting lenses, or a method of changing the position with one camera and shooting.

FIG. 4A shows an external view of the dedicated stereo camera. The stereo camera is provided on a front surface of a camera body 1 provided with a finder 2 and a shutter button 3 at an interval of about 70 mm. , Two photographing lenses 4 and 5 are provided. The subject positioned by the finder 2 is simultaneously photographed on the film disposed in the camera body 1 through the photographing lenses 4 and 5 by pressing the shutter button 3, and the film is captured from different directions. The two photographed subjects are imprinted.

FIG. 4 (b) shows the structure of a conventional stereo viewer of a simple type. The film is printed on a photographic paper from a photo holder 6a of a viewer body 6 formed of a plastic material or the like. The two stereo photographs 7 are held, and the binocular lenses 8a and 8b are arranged so as to observe the stereo photographs 7 at a clear viewing distance (about 25 cm). Therefore, if the stereo photograph 7 is viewed with the binocular lenses 8a and 8b, the subject can be observed as a three-dimensional image.

[0005]

[Problems to be solved by the invention] By the way, FIG.
In the conventional stereo viewer shown in (b), the binocular lenses 15a and 15b allow the stereo photograph 7 to be observed at a clear viewing distance of about 25 cm. It is not possible to set a clear visual distance, and this is also caused by the difference between old and young, and there is a problem that not all users can adjust the focal length well.

The present invention has been made in view of the above problems, and has as its object to adjust a stereo photograph so that each user can observe the photograph at a clear viewing distance, and to easily fold and store the stereo photograph. To provide a viewer.

[0007]

In order to achieve the above object, a stereo viewer according to the present invention is provided with a holder for holding a stereo photograph and opposed to the holder for stereoscopic observation of the stereo photograph. A lens holder for holding the binocular lens, a support member disposed substantially parallel to the holder portion by a housing member at a predetermined distance, and a plate-like member for connecting and supporting the lens holder portion to the support member And a connecting portion with a fold so that the lens holding portion can be folded toward the support side to perform an expansion / contraction operation for changing a distance between the binocular lens and the stereo photograph. Is characterized by the following.

[0008]

According to the above arrangement, the distance between the binocular lens and the stereo photograph is changed by changing the distance between the lens portion of the binocular lens and the support by the expansion and contraction operation of the connecting portion. , The stereophotograph can be adjusted to the individual's clear viewing distance.

[0009]

FIG. 1 shows the configuration of a simple stereo viewer according to an embodiment of the present invention. Most of the entire structure including a housing 10 is made of paper material (or plastic material).
Is formed from. The housing 10 supports a holder 12 for vertically inserting and holding two stereo photographs 7a and 7b, and a lens holder 14 having binocular lenses 13a and 13b.

The lens holding section 14 is provided in the housing 10
14A and binocular lens 13 formed integrally with
a, a connecting portion 14 which is arranged in parallel with a lens portion 14B having a and 13b, and which expands and contracts by one fold on upper and lower surfaces.
C. The binocular lens 13a, 1
The lens 3b can be made of not only glass but also a plastic lens, and the entire lens portion 14B may be formed of a plastic material. The connecting portion 14C includes:
By contracting or extending, the lens portion 14B can move forward and backward with respect to the support 14A. Therefore, by moving the lens portion 14B, the stereo photograph 7 set in the holder portion 12 can be read by each user. Can be set to the distance of clear vision. In addition, the said connection part 14C can be set as the structure which gives several folds.

FIG. 2 is a side view of the stereo viewer. According to the above configuration, as shown in FIG.
The range L determined by the length of C can be moved.
Therefore, by moving the lens portion 14B forward and backward with respect to the support 14A, it is possible to adjust the clear viewing distance of each person in accordance with the eyes of the individual user, whereby the stereo photograph 7 in the holder portion 12 can be adjusted. And stereoscopic observation is possible.

FIG. 3 shows a front view and a side view of the above-mentioned binocular lens 13. In the embodiment, the thickness of the lens is increased and decreased so that adjustment can be made even better for a considerable difference in age. The binocular lens 13 can be a so-called varifocal lens by making the directions different. That is,
In consideration of the movement range L of the lens portion 14B, the thickness of the binocular lens 13 is changed from a thickness Acm for a young person whose clear visual distance is about 25 cm to a thickness corresponding to an elderly person whose clear visual distance is about 50 cm. Continuously change to Bcm. The human eye becomes hyperopic with age and the image of the object can be formed behind the retina, so it is difficult to observe a stereoscopic photograph with a normal binocular lens 13 at a normal clear vision distance of about 25 cm. Become. Therefore, while performing focusing while moving the lens unit 14B forward and backward, a young person can focus and observe the stereo photograph 7 at a normal clear visual distance by using the upper side of the lens, while an old man can use the upper side of the lens. By using the lower side of the lens, the focus position can be moved to the front side, and the stereo photograph 7 can be focused on the retina, and anyone, regardless of age, can observe the stereo photograph 7 well as a stereoscopic image. It becomes possible.

In the stereo viewer of the above embodiment, the housing 10 can be folded. For example, in the vertical portion 10a of the housing 10 connecting the holder portion 12 and the support 14A, 100 in FIG.
The vertical portion 10a can be folded toward the holder portion 12 and the binocular lens holding portion 14 can be folded toward the holder portion 12 by making the support 14A side removable as shown in FIG.

[0014]

[Effects of the Invention] As described above, according to the present invention,
A support that is substantially parallel to the holder at a predetermined distance, and a plate-like member that connects and supports the lens holding unit to the support, and performs a fold so as to be able to expand and contract and be foldable. The connection between the lens holder and the stereo photograph can be adjusted to the clear vision distance of each user's eyes. It becomes possible to observe a stereoscopic image by focusing. In addition, a compact viewer can be obtained by folding the lens holding portion toward the support, which facilitates storage and carrying.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a simple stereo viewer according to an embodiment of the present invention.

FIG. 2 is a side view of a stereo viewer showing an expanded and contracted state of a binocular lens unit according to the embodiment.

FIGS. 3A and 3B are a front view [FIG. 3A] and a side view [FIG. 2B] showing the configuration of the binocular lens of Example.

FIG. 4 shows a conventional stereo camera [FIG.
It is a perspective view showing composition of a stereo viewer [Drawing (b)].

[Explanation of symbols]

6: Viewer body, 7a, 7b: Stereo photograph, 8a, 8b, 13a, 13b: Binocular lens, 1
0 ... housing, 10a ... vertical part, 12 ...
Holder part, 14 ... lens holding part, 14A ... support, 14B ... lens part, 14C ... connecting part.

Claims (1)

(57) [Scope of request for utility model registration] And 1. A holder for holding a stereograph, provided opposite to the holder unit, a predetermined lens holding portion for holding a binocular lens for stereoscopic viewing the stereo photographs, the housing member relative to the holder unit Distance
And a plate for connecting and supporting the lens holding unit to the support,
Comprising a binocular lens and the stereo photograph
Telescopic operation to change the distance of
So that the lens holder can be folded toward the support.
A creased connecting portion .