JPH07319064A - Piston type camera - Google Patents

Abstract

PURPOSE:To provide a pistol type camera which is suited for holding by one hand at the waist level during photography. CONSTITUTION:Beams of light of an objective lens array L, are separated into a finder light beam to be emitted through an eyepiece L2 and a photographic light beam. The photographic light beam is refracted by a total reflection mirror M2, transmitted through a relay lens array L3, refracted perpendicularly by a total reflection mirror M3, and guided to film F. The film F is fed into a spool 6 from a film cartridge 5. During photography, a second cylinder portion 1c is gripped to direct the end face of a first cylinder potion 1b to a field.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pistol type camera suitable for shooting with one hand.

[0002]

2. Description of the Related Art Currently, as a film used in a photographic camera, a 135-type film loaded in a cartridge is predominant. The film has a tip exposed outside the cartridge, and the photographer pulled the tip out to an appropriate length and loaded it on a sprocket or a spool for winding. However, this operation is time-consuming and requires a certain amount of skill, so that a loading error often occurs.
In order to eliminate this point, in Japanese Patent Publication No. 5-257234, the spool in the cartridge is rotated to feed the film out of the cartridge, and the leading end of the film can be supplied to the spool for winding. However, in connection with that, various proposals have been made regarding miniaturization of patrones and films. According to it
Regarding the diameter of the cartridge, it is 14 to 2 with respect to the current 25 mm.
0 mm, the possibility of minimum 350 mm ^2, and so significantly smaller with respect to about 860 mm ² is the current for the area of the screen film (single imaging surface) is shown.

Further, in Japanese Patent Publication No. 5-165166, the patrone size has a diameter of 17 to 21 m.
m, height is 25 to 30 mm (the height of the 135-inch film cartridge is about 47 mm), and the film size is a screen area of 400 to 600 mm ² and a film width of 20 to 30.
A numerical value of mm (the width of the 135 type film is 35 mm) is proposed. Further, Japanese Patent Laid-Open No. 5-142641 proposes a film format with a film width of 21.6 mm. That is, the screen size of the 135 type film is 24 × 36 mm, whereas it is 16.6 × 29.7 mm, and the aspect ratio is 1.8 in the high-definition format. Then, by trimming at the time of printing, it is possible to obtain a print of the current L size (aspect ratio 1.5) or cinemascope size (aspect ratio 2.3), and propose to record the trimming information on the film. Has been done. In addition to these, an example in which the film width is smaller than that of the 135 type film is Japanese Patent Publication No. 4-10003
Japanese Patent No. 6 and Japanese Patent Publication No. 5-19368, Japanese Patent Publication No. 5-1
9370 and the like.

As described above, recently, as compared with the conventional 135 type film, the film, the width of the film, the size of the screen and the like are reduced, the technology for sending out from the film, the recording of magnetic or optical information, etc. Many systems have been proposed, and the downsizing of cameras has become possible. On the other hand, when it becomes possible to downsize the camera in this way,
As a matter of course, the photographer needs to operate the camera with one hand. Then, as one of the advanced usage forms, there is a need to hold a camera near the waist and shoot. However, at present, no camera has emerged that can sufficiently meet such needs.

[0005]

The general design of conventional cameras is generally a rectangular box type, and a cylindrical type is also known. However, the box-shaped camera is
When shooting with one hand, as shown in FIG. 6, the center of gravity A of the camera cannot be gripped and the balance is unbalanced, which may cause camera shake. Especially when shooting at the waist level, the wrist is required. There is a problem in that the feeling of stability becomes worse as it has to be bent as above. In addition, when a cylindrical camera tries to shoot at the waist level, it not only puts an unreasonable burden on the wrist as shown in FIG. 7, but it is difficult to lower it to the waist level and forcibly lowers it to the waist level. There is a problem that the elbow is separated from the torso, and the posture becomes unstable and the camera shake easily occurs.

The present invention has been made in order to solve such a problem, and an object thereof is to take a picture by holding a camera in which an operation error such as camera shake is unlikely to occur when taking a picture with one hand, especially at a waist level. It is to provide a pistol type camera that is suitable for use.

[0007]

In order to achieve the above object, the pistol type camera of the present invention is formed by a first cylinder portion and a second cylinder portion with an obtuse angled bending portion interposed therebetween, and is formed by a first cylinder portion during photographing.
An outer casing configured to hold the second tubular portion with the end surface of the tubular portion facing the object field, an objective lens system provided on the first tubular portion to form a first optical axis, and a first lens provided on the bent portion. A first bending member that bends one optical axis into a second tubular portion to form a second optical axis, and a second optical axis that is provided in the second tubular portion and bends a second optical axis in a substantially vertical direction to form a third optical axis. A photographic optical system having a second bending member, and a finder optical axis that is the same as or substantially parallel to the first optical axis are bent at an appropriate angle in a direction opposite to the second cylindrical portion and are emitted to the outside of the outer casing. It is provided with a finder optical system having a finder optical axis bending member, and a film feeding means for feeding a photographing film provided in the second tubular portion substantially parallel to the second optical axis and feeding it onto a third optical axis. Further, preferably, in the pistol type camera of the present invention, the finder optical axis bending member is provided between the objective lens system and the first bending member. Further, preferably, in the pistol type camera of the present invention, the first bending member, the second bending member, and the finder optical axis bending member are constituted by reflecting members.

[0008]

With the above construction, the light beam incident on the objective lens system is bent into a dogleg shape by the first bending member, is bent in a substantially vertical direction by the second bending member, and is guided to the film surface. . Then, at the time of photographing, the second tube portion accommodating the film feeding means and the like is held. Therefore,
It is especially suitable for shooting at the waist level, and it is possible to aim the objective lens toward the field in a stable posture with one hand. Further, the finder optical axis is bent by the finder optical axis bending member in a direction opposite to the bending direction of the second tubular portion, and is ejected from the outer casing. Therefore, when the user holds the camera at the waist level, the photographer can peek in a natural posture from above the camera.

[0009]

Embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a perspective explanatory view showing a camera of a first embodiment of the present invention, and FIGS. 2, 3 and 4 show a second embodiment, a third embodiment, and a fourth embodiment, each showing a part of an optical system. FIG. 5 is an explanatory diagram of an example, and FIG. 5 is an explanatory diagram showing a case where the pistol type camera of the present invention is held at a waist level.

First, the configuration of the first embodiment will be described with reference to FIG. The outer casing 1 of the camera has a tubular shape, and is composed of a first tubular portion 1b and a second tubular portion 1c sandwiching a bent portion 1a that is bent at an obtuse angle, and has a substantially "V" shape as a whole. There is. At the time of shooting, hold the second tubular portion 1c, and face the end surface of the first tubular portion 1b toward the object field, and hold it in the same manner as a pistol. Therefore, the release button 2 is provided inside the bent portion 1a. The objective lens group L ₁ is arranged inside the first cylindrical portion 1b, and the flash light emitting portion 3 and the condenser 4 are provided above it. The rear portion of the objective lens group L ₁ is disposed a half mirror M ₁ divides the light beam incident on the objective lens group L _1. One of the divided light beams is emitted as a finder light beam through the eyepiece lens L ₂ from a window provided in the upper portion of the first tubular portion 1b.

A total reflection mirror M ₂ is arranged in the bent portion 1a, and the other light beam split by the half mirror M ₁
That is, the photographing light beam is bent toward the second tubular portion 1c. The second lens barrel 1c includes a relay lens unit L ₃ and a total reflection mirror M.
₃ is provided, and the total reflection mirror M ₃ bends the optical axis of the photographing light beam in the vertical direction, that is, in the back direction of FIG.
Further, a cartridge 5 and a sprawl 6 are arranged in the second cylindrical portion 1c so that the light flux bent by the total reflection mirror M ₃ exposes the film F. Furthermore,
The second cylinder 1c accommodates a battery 7 required for film feeding and flash emission. Incidentally, as a matter of course, a shutter (not shown) is arranged at an appropriate position after the half mirror M ₁ .

In the camera having such a structure, when the conventional 135 type film is used, the second cylinder 1c becomes thick and difficult to grip because of the large size of the cartridge.
Therefore, it is desirable to adopt the film of the small Patrone, which has been proposed in recent years. A state in which this camera is held at the waist level is shown in FIG. Since the whole is in the shape of a "ku", it is possible to aim the objective lens to the field without putting an unreasonable burden on the wrist and holding the elbow away from the torso as when holding a pistol. It is possible. In addition, the first cylindrical portion 1 including the objective lens group, the finder optical system, the flash light emitting device, etc.
Since b is located on the upper side of the hand, the center of gravity of the camera is supported by the whole hand, and the camera can be held in a well-balanced manner, which is suitable for shooting with one hand. Further, since the release button 2 is arranged near the index finger when the camera is gripped, stable release can be performed like pulling the trigger of the pistol. Further, since the battery 7 is arranged in the second tubular portion 1c, the center of gravity of the entire camera moves to the second tubular portion side, and the camera can be gripped in a more balanced manner. In this embodiment, since a reflecting member (mirror) is used for bending the optical axis, the size and weight can be reduced as compared with the case where the optical member is bent by a prism or the like. It is also possible to use a quick return mirror instead of the half mirror M ₁ .

FIG. 2 shows a second embodiment of the present invention. This embodiment is the same as the first embodiment shown in FIG.
A beam splitter BS ₁ is arranged instead of the half mirror M ₁ .

FIG. 3 shows a third embodiment of the present invention. This embodiment is provided with a beam splitter BS ₂ whose reflection surface is arranged differently from that of the second embodiment shown in FIG. 2, and a total reflection mirror M ₄ is arranged below it. With such an arrangement, the finder image can be vertically erected (see Japanese Patent Laid-Open No. 52-107830).

FIG. 4 shows a fourth embodiment of the present invention.
It In this embodiment, the photographing optical system and the finder optical system are combined.
Each is independent. That is, the objective lens
Group L ₁Is a group of objective lenses dedicated to shooting.
Group L₁All the light beams incident on the total reflection mirror M₂Through
And is guided to the film surface. On the other hand, for the viewfinder only
Objective lens group L₁The light flux incident on the ‘₁
Is divided by, one is the eyepiece L₂Through waste
Is emitted upwards as a light flux for a tri-level finder,
The other is the eyepiece L₂Eye level finder through '
-It is emitted in the horizontal direction as a light flux. In this case,
Fmirror M₁Instead of the
An optical system including a beam splitter may be adopted.
Also, half mirror M₁Instead of using a total reflection mirror,
It may be a viewfinder only for strike level, or vice versa
Half mirror M₁Fine for eye level only without
It is also possible to set it as da.

[0016]

As described above, according to the pistol type camera of the present invention, the pistol type camera is bent at an obtuse angle to form the first cylinder portion and the second cylinder portion, and is shaped like a dogleg. Since it is possible to hold the second cylinder and hold the first cylinder containing the objective lens system so as to be on the upper side of the gripped hand, it is stable and is most suitable for one-handed photography. Even if you hold it at waist level, you don't have to bend your wrists forcibly and you do not have to keep your elbows away from your torso, so there is no worry of camera shake. Further, the light emitted from the finder can be easily seen from above, and the object scene can be accurately captured.

[Brief description of drawings]

FIG. 1 is a perspective explanatory diagram showing a main part of a camera that is a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a second embodiment of a part of the optical system shown in FIG.

FIG. 3 is an explanatory diagram showing a third embodiment similar to FIG.

FIG. 4 is an explanatory diagram showing a fourth embodiment similar to that of FIG.

FIG. 5 is an explanatory diagram showing a case where a camera of the present invention is held.

FIG. 6 is an explanatory diagram showing a case where a camera having a conventional design is held.

FIG. 7 is an explanatory diagram showing a case where a conventional camera having another design is held.

[Explanation of symbols]

1 camera outer casing 1a bent portion 1b first cylindrical portion 1c second cylindrical portion 2 release button 3 flash unit 4 capacitor 5 magazine 6 sprawl 7 cell L _1, L ₁ 'objective lens L _2, L _2' eyepiece L ₃ relay lens group M ₁ half mirror M ₂ , M ₃ , M ₄ total reflection mirror F film BS ₁ , BS ₂ beam splitter

Claims (3)

[Claims] 1. An outer structure which is formed by a first cylinder part and a second cylinder part across an obtuse-angled bent part, and which holds the second cylinder part with the end surface of the first cylinder part facing the field during photographing. A housing, an objective lens system provided in the first tubular portion to form the first optical axis, and a first bend provided in the bent portion to bend the first optical axis into the second tubular portion to form the second optical axis. A photographing optical system having a member and a second bending member that is provided in the second tubular portion and bends a second optical axis in a substantially vertical direction to form a third optical axis, and the same or substantially parallel to the first optical axis. Finder optical system having a finder optical axis bending member that bends the finder optical axis in a direction opposite to the second tube portion at an appropriate angle and emits the light out of the outer casing, and a photographic film provided in the second tube portion. And a film feeding means for feeding the light onto the third optical axis substantially in parallel with the second optical axis. Pistol-type camera that. 2. The pistol type camera according to claim 1, wherein the viewfinder optical axis bending member is provided between the objective lens system and the first bending member. 3. The pistol type camera according to claim 1, wherein the first bending member, the second bending member, and the finder optical axis bending member are reflection members.