JP2885898B2 - Stereoscopic camera - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic camera used for taking a stereoscopic photograph by a lenticular method.

[Conventional technology]

2. Description of the Related Art Conventionally, in order to make a two-dimensional photograph look three-dimensional with a sense of perspective, a method of arranging two photographs taken at right and left distant positions and viewing with a stereoscopic endoscope, two left and right filter glasses of different colors. Through a lenticular plate, a lenticular method using a lenticular plate or the like.

In the lenticular method among these methods, unlike other methods that can not be seen three-dimensionally unless special glasses are used, without using such special glasses, natural color photographs can be viewed from a distance. It has the advantage that you can see it three-dimensionally just by looking at it as you would see a normal photo.

In the lenticular method, for example, as described in Japanese Patent Publication No. 56-2692, a plurality of negatives in which the image of the subject is slightly displaced in the horizontal direction are created by photographing the subject with a stereoscopic camera. Using these negatives, photographic paper having a lenticular plate adhered to the surface is exposed to light and developed. Alternatively, after exposing and developing the printing paper via the lenticular plate, another lenticular plate similar to the lenticular plate used for the exposure is attached to the printing paper. Thereby, a stereoscopic photograph is obtained.

However, the lenticular method does not require any equipment as described above to view the completed stereoscopic photograph, and can be viewed like a normal photograph. Each process requires advanced technology and dedicated equipment, such as shooting a subject with a photographic camera and printing on photographic paper. Therefore, it is used only in special fields provided as ready-made products such as postcards, displays, decorative boxes, etc., such as snapshots and commemorative photos in ordinary households, recorded photos and news photos by various professional photographers, etc. At present, stereoscopic photography is not used at all in fields where ordinary photography is widespread.

One of the causes is that a dedicated tripod must be used to hold a stereoscopic camera horizontally when taking a stereoscopic photograph.

That is, as a conventional stereoscopic camera, a plurality of lenses are provided on a camera body, and the lenses are arranged in a row so that their optical axes are parallel to each other and are sequentially spaced at a fixed distance. A so-called multi-view camera is known.

In order to photograph a subject with such a conventional stereoscopic camera, it is necessary to use a tripod equipped with a level and fix the camera so that the arrangement direction of each lens is horizontal. There is.

[Problems to be solved by the invention]

As described above, the conventional stereoscopic camera is not easy to handle in shooting, and cannot be easily used by non-expert photographers for snap photography.

If the shooting was performed without using the tripod as described above, and the camera was not held horizontally and had a considerable inclination, the image was captured on each negative shot by multiple lenses. The image of the subject is inclined in each negative, and the position in the height direction is shifted between the negatives. In order to create a stereoscopic photograph using such negatives, the negatives must be cut or edited according to the inclination, which makes the operation extremely difficult and requires much time and labor. I will. Even when such editing is performed, a sufficient three-dimensional effect may not be obtained.

As described above, when photographing is performed without using a tripod with a conventional stereoscopic camera, it is expected that many of them will fail for stereoscopic photography. Therefore, the side that performs exposure and development on photographic paper using such negatives (lab side) can guarantee that the created stereoscopic photograph has the quality as a stereoscopic photograph. No, and it is expected that many troubles will occur with customers (general photographers).

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems, and provides a stereoscopic camera that can hold a camera body in a horizontal posture without using a special dedicated tripod, and that can be easily used by a general photographer. It is intended to provide.

[Means for solving the problem]

A three-dimensional camera according to the invention according to claim 1, comprising a camera body, a finder provided in the camera body, and a plurality of lenses arranged in a row in the camera body in a horizontal direction. In the camera, a slit into which light is incident is provided in the viewfinder, and a pendulum swinging by gravity in at least a plane parallel to the imaging plane is provided in the camera body, so that the lens arrangement direction is horizontal. When the posture of the camera body is determined, the pendulum is configured to block light from entering the slit.

Since the pendulum is configured to block light from entering the slit, it is easy to confirm the presence or absence or change of the incident light, and it is easy to confirm whether the camera body is in a horizontal position. .

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a stereoscopic camera 1 according to the present invention,
FIG. 2 is a rear view of the stereoscopic camera 1 of FIG. 1, and FIG. 3 is a sectional view of the stereoscopic camera 1 of FIG.

The stereoscopic camera 1 includes a camera body 11 and four lenses 1 whose optical axes AX are parallel to each other and arranged in a row in the camera body 11 at the same pitch PL1 in the lateral direction (the direction of arrow M1).
, A finder 13, a shutter button 15, a film feed knob 16, a posture display device 17, and the like.

Since the structure and operation of each part of the stereoscopic camera 1 other than the viewfinder 13 and the attitude display device 17 have been conventionally known, the description thereof will be omitted.

The viewfinder 13 is a hole whose diameter increases toward the front of the camera body 11, and the above-described attitude display device 17 is provided in the viewfinder 13.

FIG. 4 is an enlarged front view of the attitude display device 17, and FIG.
The figure is a side view of the attitude display device 17.

In these figures, the attitude display device 17 is provided with a finder frame 2 provided with a finder window 22 and slits 23, 23.
1, and finder frame 21 to swing by gravity
And a pendulum member 24, 24 rotatably attached to a shaft pin 25.

The pendulum member 24 holds its posture in the vertical direction by its own weight, and its width dimension is equal to the width dimension of the slit 23. Therefore, as shown in FIG.
When the camera is held in a horizontal posture (the camera body 11 is in a straight posture), each pendulum member 24 closes each slit 23, and all of the light incident on the slit 23 from outside is pendulum member. Blocked by 24.

On the other hand, when the posture of the camera body 11 is inclined, as shown in FIG. 6, the positions of the slit 23 and the pendulum member 24 are shifted, so that a part of the incident light from the outside passes through the gap. Get in.

Therefore, when these states are viewed from the viewfinder 13, when the camera body 11 is in the horizontal posture, the slit 23
Is dark because there is no incident light, and when the camera body 11 is in the inclined posture, the incident light to the slit 23 increases according to the degree of the inclination and becomes bright.

That is, the relative angular position of the camera body 11 and the pendulum member 24, in other words, the degree of inclination of the camera body 11 from the horizontal posture is displayed in the viewfinder 13 in the form of the brightness of the slit 23. .

Therefore, when taking a picture with the stereoscopic camera 1, framing is performed with the exception of the finder 13, and the camera body 11 is held in a state where there is no incident light from the slit 23 or in a state where the incident light is minimized. Thereby, the stereoscopic camera 1 can be easily set in the horizontal posture.

The attitude display device 17 is fixed to the camera body 11 so that the finder frame 21 is parallel to the image forming surface (film surface), and the image forming surface is vertical, that is, the optical axis AX
When the posture is horizontal, the pendulum member 24 swings most smoothly.
It is necessary to hold the camera body 11 so that AX is in a horizontal state.

On the other hand, a posture display device 17a that operates accurately even when the optical axis AX is inclined from the horizontal state will be described below.

FIG. 7 is an enlarged sectional front view showing a posture display device 17a of another example, and FIG. 8 is a sectional side view of the posture display device 17a of FIG.

In these figures, the attitude display device 17a has a frame-shaped support frame 31 having a U-shaped cross section on each side, and support holes 33, 33 provided on both sides of the support frame 31.
In addition, a support shaft 32 provided on the upper part of the finder frame 21 is rotatably inserted. Thus, the finder frame 21 is supported rotatably about the support shaft 32 in a plane perpendicular to the plane on which the pendulum member 24 rotates.

Therefore, as shown by the chain line in FIG. 8, even when the support frame 31 is not vertical, the finder frame 21 is in a vertical state due to its own weight, and the pendulum member 24 is always in the state of swinging smoothly.

That is, even when the optical axis AX is inclined from the horizontal state, the attitude display device 17a operates accurately, and the camera main body 11 can be correctly oriented horizontally in the direction in which the lenses 12 are arranged.

According to the above-described embodiment, the stereoscopic camera 1 can be easily set in the horizontal posture, and correct photographing for the stereoscopic photograph can be extremely easily performed without using a dedicated tripod.

Therefore, it is easy to handle when shooting, it can be easily used by non-expert photographers for snapshots etc., and the failure rate is low, so the lab side is troublesome in editing etc. It is expected that many of the finished three-dimensional photographs will have the quality of a three-dimensional photograph without performing any complicated work, and occurrence of troubles with customers is prevented.

In the above embodiment, a suitable heavyweight may be attached so that the pendulum member 24 is vertical. Although the width dimensions of the slit 23 and the pendulum member 24 are the same, they may be different. Although two sets of the slit 23 and the pendulum member 24 are provided, one set may be provided. Although the pendulum member 24 is provided on the side except the eye, it may be provided on the opposite side. Instead of the pendulum member 24, a wire-shaped pendulum may be provided. In that case, it is also possible to omit the slit 23 and provide a pendulum in the finder window 22. In addition, pendulum and finder frame 21
A scale or the like for indicating a relative angular position with respect to the camera body 11 may be provided.

In the above-described embodiment, the attitude display device 17 is provided near the center of the camera body 11 in the optical axis AX direction, but is provided at other positions, for example, at the end of the front side of the camera body 11 (the side with the lens 12). You may. Although the case where the finder 13 is a frame type finder has been described, various types such as an inverted Galileo type, an Albada type, and a daylighting type can be adopted. In that case, it is possible to make it easier to see the viewfinder by displaying the relative angular position between the camera body 11 and the pendulum on the optical image frame. The position of the viewfinder 13 does not have to be at the center of the camera body 11, but may be a position deviated rightward or leftward.

In the embodiment described above, the camera body 14 has four lenses.
Although 12 is provided, three or less or five or more may be provided.
The plurality of lenses 12 may be arranged in an arc shape. In addition, the structure, shape, dimensions, material, etc. of each part of the posture display devices 17, 17a, the viewfinder 13, and the stereoscopic camera 1 are as follows.
Various changes other than those described above can be made.

The present invention can be applied to cameras of various film sizes and cameras of various structures, for example, so-called disposable cameras.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to this invention, the camera body can be hold | maintained in a horizontal attitude | position without using a special tripod stand, and the stereoscopic photograph camera which a general photographer can use easily is provided. it can.

[Brief description of the drawings]

1 is a front view of the stereoscopic camera according to the present invention, FIG. 2 is a rear view of the stereoscopic camera of FIG. 1, and FIG. 3 is a line III-III of the stereoscopic camera of FIG. FIG. 4 is an enlarged front view of the posture display device, FIG. 5 is a side view of the posture display device, FIG. 6 is a front view showing the posture display device in a tilted state, and FIG. FIG. 8 is an enlarged cross-sectional front view of a posture display device of another example, and FIG. 8 is a cross-sectional side view of the posture display device of FIG. 1 ... stereoscopic camera, 11 ... camera body, 12 ... lens, 13 ... finder, 17, 17a ... posture display device,
23 ... slit, 24 ... pendulum member (pendulum).

Claims (1)

(57) [Claims] 1. A stereoscopic camera comprising: a camera body; a finder provided on the camera body; and a plurality of lenses arranged in a row in the camera body in a horizontal direction. The camera body is provided with a pendulum which swings by gravity in at least a plane parallel to the image forming plane, and the camera body is provided with a slit so that the lens arrangement direction is horizontal. A stereoscopic camera, characterized in that the pendulum blocks light from entering the slit when the posture is determined.