JPH07128755A - Stereo adapter - Google Patents

Abstract

PURPOSE:To provide an attachable/detachable stereo adapter which can be accurately and easily aligned with a camera main body. CONSTITUTION:In the case of attaching the stereo adapter 10 to the front surface of a box type camera 12, the aperture part 58 of a stereo adapter main body part 38 is inserted and fitted in the lens holder part 27 of the camera 12. Furthermore, the recessed part 611 of the adapter 10 is fitted out the projected grip part 24 of the camera 12. In such a state, a band member 40 is laid over the film unit with a lens 12 and the main body part 38 is fixed on the camera main body. Thus, the adapter 10 is accurately and easily aligned with the camera 12. The band member 40 is constituted so that its one end, at least, may be freely attached to/detached from the main body part 38, and the adapter 10 is easily attached to/detached from the camera 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereo adapter, and more particularly to a stereo adapter which is mounted on the front surface of a box-shaped camera for stereo photography.

[0002]

2. Description of the Related Art In order to take a stereo picture using a normal camera, a stereo adapter is mounted on the front surface of a taking lens. Stereo adapter 2 pairs left and right (4 pieces)
The light of the subject image incident on the lens optical path is separated into two subject images, and two subject images on the left and right are formed on one frame of the film.

On the other hand, the present applicant has provided a lens-fitted film unit in which a lens is attached to a 35 mm size film. This type of lens-equipped film unit has a box-shaped outer shape, and is entirely packaged in a packaging body on which instructions for use and the like are printed. The present applicant has applied for an application relating to Japanese Unexamined Patent Publication No. 5-158169 as a stereo adapter to be mounted on a film unit with a lens of this type. Also, an application for Japanese Patent Laid-Open No. 158168/1993 was filed as a stereo camera in which a film unit with a lens and a stereo adapter are integrated.

In the stereo adapter of Japanese Patent Laid-Open No. 5-158169, an insertion opening for inserting a box-shaped lens-equipped film unit is formed in the rear portion of the box-shaped stereo adapter. It is configured so that it can be attached to the unit with one touch. In the stereo camera disclosed in Japanese Patent Laid-Open No. 5-158168, a box-shaped stereo adapter is integrally attached to the front of a box-shaped film unit with a lens to form a box-shaped stereo camera, and the entire stereo camera is packaged. It is configured for packaging.

[0005]

However, the stereo adapter disclosed in Japanese Patent Laid-Open No. 5-158169 has a drawback in that it is difficult to accurately align the stereo adapter with the camera. Further, the stereo camera disclosed in Japanese Patent Laid-Open No. 5-158168 has a drawback that it must be used exclusively for the stereo camera because the stereo adapter is not detached from the film unit with lens.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a detachable stereo adapter capable of accurately and easily performing alignment with the camera body.

[0007]

In order to achieve the above object, the present invention provides a stereo adapter mounted on the front surface of a taking lens of a box-shaped camera for taking a stereo image. A positioning opening that fits in the formed convex portion is formed, and a detachable stereo adapter main body that is mounted on the front surface of the camera and a stereo image of the subject image that is provided on both sides of the stereo adapter main body. Is provided on the stereo adapter body so as to be positioned in front of the photographing lens of the camera, and a pair of mirrors that guide the two from the both sides to the front of the photographing lens of the camera. At least one end of the reflective optical element that guides to the taking lens and the stereo adapter main body are detachably locked, and the turtle with the stereo adapter main body attached. Passing subjected to back, characterized in that it consists of a band member for attaching the stereo adapter main body to the camera.

[0008]

According to the present invention, when the stereo adapter body is mounted on the camera, the convex portion around the photographing lens of the camera is inserted into the positioning opening of the stereo adapter body to attach the stereo adapter body to the camera. Position and attach to. Further, the stereo adapter is also aligned with the grip of the camera. In this state, when the band member is suspended around the camera and the stereo adapter body is attached to the camera, the stereo adapter is accurately positioned on the camera. As described above, the stereo adapter according to the present invention can be accurately aligned with the camera by using the convex portion around the photographing lens on the camera side and the grip portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a stereo adapter according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a state before the stereo adapter 10 is attached to the lens-equipped film unit 12. 2 and 3
[Fig. 3] is a perspective view of the stereo adapter 10 mounted on the film unit with lens 12 as seen from the front and back. FIG. 4 is a sectional view taken along a horizontal plane including the optical axis of the taking lens.

First, the lens-fitted film unit 12 to which the stereo adapter 10 is attached will be described. This film unit with lens 12 is formed in a box shape,
Plastic unit body 14, front cover 16,
The back cover 18 is a main member. A cartridge chamber 20 and a film chamber 22 are formed on the right and left sides of the unit main body portion 14, and a convex grip portion 24 having a substantially arc-shaped cross section is formed on the cartridge chamber 20 side of the front cover 16 so as to easily hold the camera. Has been done. Further, the front cover 16 holds a plastic taking lens 26 via a convex lens holder 27. As for the surface shape of the lens holder 27, as shown in FIG. 1, the left side portion 27A is formed in a rectangular shape and the right side portion 27B is formed in a semicircular shape. The stereo adapter 1 is attached to the left side of the lens holder 27.
Accurate positioning can be achieved by blocking 0 rotation. A finder 28 is provided above the taking lens 26.
(See FIGS. 1 and 3), a shutter 32 (see FIGS. 1 to 3) and a film winding mechanism 34 (see FIG. 3) are arranged on the side of the cartridge chamber 20.
A strobe 30 is arranged on the side of the film chamber 22.

Further, the front cover 16 and the back cover 18 are joined to the unit main body 14 from the front and back and then fixed by ultrasonic welding or the like, and the user inserts a film (not shown) in the cartridge chamber 20 and the film chamber 22. It cannot be taken out. The lens-equipped film unit 12 is entirely packaged by the packaging body 36 except for the locations where the taking lens 26, the finder 28, and the strobe 30 are provided. The package 36 is formed of a printable cardboard, a thin plastic sheet, or the like. The packaging body 36 is printed with instructions for using the lens-equipped film unit 12 and the like, and is provided with various designs.

Next, the stereo adapter 10 of the present invention will be described. As shown in FIG. 1, the stereo adapter 10 includes a detachable stereo adapter body 38 mounted on the front surface of the lens-equipped film unit 12, and a band for attaching the stereo adapter body 38 to the lens-equipped film unit 12. And a member 40. The stereo adapter body 38 includes a pair of first mirrors 42 and 44 and a pair of second mirrors 46 and 4.
It is composed of a stereo adapter optical system composed of four mirrors No. 8 and a substrate 50 for holding these mirrors 42, 44, 46 and 48 at predetermined positions. The substrate 5
An upper plate 52 and a bottom plate 54 are formed above and below 0, and the first mirrors 42 and 44 are swingably supported by the left and right ends of the upper plate 52 and the bottom plate 54 via shafts 42A and 44A, respectively. It is adhered to the inner side surfaces of the mirror support plates 43 and 45.
In addition, as shown in FIG. 2, the stereo adapter optical system includes a mirror 4 so that light emitted from the strobe 30 of the lens-equipped film unit 12 is not blocked by the mirror 44.
Reference numerals 2 and 44 are asymmetrical with respect to the taking lens 26. That is, the first mirrors 42 and 44 are the photographing lens 2
The mirror 44 is arranged in an asymmetrical position with respect to 6, and the size of the mirror 44 is smaller than that of the mirror 42. Further, as shown in FIG. 1, a substantially triangular light-shielding cover is provided on the upper edge of the mirror support plate 45 that supports the mirror 44 on the side of the strobe 30 to prevent light emitted from the strobe 30 from entering the taking lens 26. 41 is provided.

Further, as shown in FIG. 4, locking claws 56, 56 ... For holding the opening angle of the mirrors of the first mirrors 42, 44 at a predetermined angle are provided at both ends of the substrate 50. The locking claws 56 are engaged with recesses (not shown) formed on the back surfaces of the first mirrors 42 and 44 to hold the opening angle of the first mirrors 42 and 44, and at the same time, to the first mirror 4
When 2 and 44 are swung in the closing direction, locking claws 56 and 56
Is elastically deformed to easily disengage.

Further, as shown in FIG. 1, at the center of the substrate 50, there is formed an opening 58 for a photographing lens which is fitted to the outer periphery of the convex lens holder 27. Board 5
The zero opening 58 is formed of a rectangular portion 58A and an arc portion 58B corresponding to the shape of the lens holder 27. As a result, when the lens holder 27 of the film unit with lens 12 is inserted into the opening 58 of the substrate 50, the stereo adapter 10 is positioned vertically, horizontally, and horizontally with respect to the film unit 12 with lens. Further, second mirrors 46 and 48 held by a holding member 60 having a V-shaped cross section are arranged at a position corresponding to the taking lens 26 on the substrate 50. Second mirror 4
Reference numerals 6 and 48 are arranged at an inclination angle of approximately 45 °, and the light of the two object images from the first mirrors 42 and 44 is taken by the taking lens 26.
It is reflected toward the film in the film unit 12 with a lens via. Further, in FIG. 4, a concave portion 64 that fits the convex grip portion 24 is formed at the left side of the substrate 50, that is, at a position corresponding to the grip portion 24 of the lens-equipped film unit 12.

At the upper center of the substrate 50, an opening 62 on the objective lens side of the finder 28 shown by a broken line in FIG.
Are formed. On the other hand, as shown in FIG. 1, the band member 40 is formed in a band shape by a plastic material having a length to be suspended on the film unit with lens 12 and has one end 6
6 is fixed to the upper bent portion 52 of the substrate 50, and the other end 6
The stopper hole 70 formed in 8 is detachably fitted to the protrusion 72 formed on the bottom plate 54 of the substrate 50. Then, the stereo adapter body 38 is attached to the film unit 1 with a lens.
In the case of attaching the band member 40 to the lens-equipped film unit 12, the stopper hole 70 is formed into a projection 72.
Fit in. Further, when removing the stereo adapter body 38 from the film unit with lens 12, the stopper hole 70 is removed from the protrusion 72.

An eyepiece lens side opening 74 of the finder 28 is formed at a position corresponding to the finder 28 of the band member 40. Next, the operation of the stereo adapter 10 of the present invention configured as described above will be described. When the stereo adapter body 38 is attached to the lens-fitted film unit 12, the stereo adapter body 38
The lens holder portion 27 of the lens-equipped film unit 12 is fitted into the photographing lens opening 58. This time,
The recess 64 of the stereo adapter body 38 and the grip 24 of the lens-equipped film unit 12 are also engaged at the same time. In this state, the band member 40 is hung on the lens-equipped film unit 12 and the lens-fitted film unit 12 is tightened to fit the stopper holes 70 of the band member 40 into the protrusions 72, so that the stereo adapter body 38 is attached to the lens-equipped film. Attach to unit 12. At this time, the stereo adapter main body portion 38 is pressed against the front surface of the lens-equipped film unit 12 and is accurately positioned with respect to the lens-equipped film unit 12. As described above, the photographing lens opening 58 of the stereo adapter body 38 and the lens holder 27 of the lens-equipped film unit 12,
Since the concave portion 64 of the stereo adapter body 38 and the grip 24 of the lens-equipped film unit 12 are aligned with each other, the stereo adapter 10 and the lens-equipped film unit 12 can be accurately and easily positioned. it can. Further, even if the stereo adapter 10 is mounted on the packaging body 36 such as a paper box for packaging the lens-fitted film unit 12, the instructions printed on the packaging body 36 are not hidden.

The stereo adapter body 38 is connected to the band
With the member 40, the front surface of the film unit 12 with lens is fixed.
After setting, the first mirrors 42 and 44 are brought into contact with the locking claw 56.
Swing in the opening direction until the
Stereo shooting possible by locking so that it is held at a predetermined angle
It becomes a state. Stereo shooting is performed as shown in Fig. 4.
4 mirrors 42, 44, 46 of the optical system for the adapter
48 in the lens optical path of the film unit with lens 12
The incident image is separated into left and right, and 2 is left and right for each frame of the film.
This is done by forming individual images. That is, the shooting record
The left half of the lens 26 is the mirror 4 of the stereo adapter 20.
2 and the mirror 46, the optical axis I₁Predetermined range centered on
Form the image of the surrounding object on the right half of one frame of the film,
The right half of the taking lens 26 is the mirror of the stereo adapter 10.
The optical axis I by the mirror 44 and the mirror 48.₂Centered on
Form a subject image in a predetermined area on the left half of one frame of film
The left and right optical axes I₁, I ₂The distance L between
The subject is photographed from positions separated by
Imprint on the left and right of one frame.

Next, when the stereo photographing is completed, the first mirrors 42 and 44 are swung in the closing direction and folded, the stopper hole 70 of the band member 40 is removed from the projection 72, and the stereo adapter 10 is attached to the film unit with lens. Remove from 12. By performing the above operation, the stereo adapter 10 of the present invention can be easily attached to and detached from the lens-fitted film unit 12, and the alignment can be performed accurately and easily, so that anyone can handle it easily.

Although the four mirrors 42, 44, 46 and 48 are used as the optical system for the stereo adapter in this embodiment, the present invention is not limited to this and the third mirror 46 is used.
Further, instead of the fourth mirror 48, a vapor deposition prism made of glass or resin may be used. Further, in this embodiment,
Although the shape of the grip portion 24 of the lens-equipped film unit 12 is a convex shape, it may be a concave shape or another shape that facilitates holding of the camera. In that case, the shape of the positioning portion 64 corresponds to the shape of the grip portion 24. Form into a shape.

[0020]

As described above, according to the stereo adapter of the present invention, the stereo adapter is positioned in the camera by inserting and fitting the lens holder portion of the camera into the opening of the stereo adapter body. At the same time, the grip portion of the camera is fitted with the corresponding concave portion or convex portion of the stereo adapter body. In this state, the band member is hung on the camera body to attach the stereo adapter body to the camera, so the stereo adapter can be easily attached to and detached from the camera, and the relative positioning between the stereo adapter and the camera body can be accurately performed. And it can be done easily.

[Brief description of drawings]

FIG. 1 is a perspective view before mounting a stereo adapter according to the present invention on a camera body.

FIG. 2 is a front perspective view showing a state in which a stereo adapter according to the present invention is attached to a camera body.

FIG. 3 is a perspective view showing a state in which the stereo adapter according to the present invention is attached to a camera body, as seen from the rear side.

FIG. 4 is a sectional view taken along a horizontal plane including the optical axis of the taking lens.

[Explanation of symbols]

 10 ... Stereo adapter 12 ... Film unit with lens 24 ... Grip part of film unit with lens 27 ... Lens holder of film unit with lens 38 ... Stereo adapter body part 40 ... Band member 42, 44 ... First mirror 42A, 44A ... No. 1 Shaft 46 around which the mirror swings ... 2nd mirror 58 ... Opening portion for taking lens of stereo adapter 64 ... Recessing portion for positioning stereo adapter

Claims (3)

[Claims] 1. A stereo adapter mounted on the front surface of a photographing lens of a box-shaped camera for stereo photography, wherein a positioning opening fitted to a convex portion formed around the photographing lens of the camera is provided. A detachable stereo adapter main body formed on the front surface of the camera, and a pair of mirrors provided on both sides of the stereo adapter main body to guide light of a subject image from both sides to the front of the taking lens of the camera. A first optical system and a second optical system, which is provided in the stereo adapter main body so as to be located in front of the taking lens, and which guides light of two object images from the first optical system to a taking lens of a camera. Optical system and at least one end of the stereo adapter body is detachably locked to the stereo adapter body, and the stereo adapter body is hung on the rear surface of the camera and mounted on the stereo adapter body. Stereo adapter, characterized by comprising a Leo the adapter body from the band member to be attached to the camera. 2. The stereo adapter according to claim 1, wherein a positioning concave portion or a convex portion conforming to a grip shape of the camera is formed on a camera mounting surface of the stereo adapter main body portion. 3. The camera is wrapped in a package,
The stereo adapter according to claim 2, wherein the stereo adapter body is attached from above the packaging body by the band member.