JPH03217834A - Camera integrated with film - Google Patents

Abstract

PURPOSE:To easily form the photograph of astronomical observation by providing a wide angle lens system whose focal point is set at infinity and a valve shutter. CONSTITUTION:A camera main body 1 is fixed to a tripod with a screw, and a shutter button is depressed in a state where the photographing lens 5 faces the sky. Since a wide angle lens is used as the lens 5 and an optimum focal distance is set at infinity at this time, a focusing operation is not necessitated. By depressing the button 2, a shutter blade 23 is turned and an aperture 21 is made in an open state, and a notch part 24 is engaged in an engaging member 25 to keep the open state. After specified time, when the member 25 is driven in a retreating direction by a releasing button 3, the aperture 21 is restored to a closed state and photographing is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disposable type film-integrated camera.

[Conventional technology]

Generally, this type of film-integrated camera is constructed by incorporating various photographing functions such as a lens, a shutter release button, and a winding mechanism into a housing in which film is loaded in advance. Since this camera has the characteristics of being small and lightweight, and is extremely inexpensive, it has rapidly become popular as a simple disposable camera.

With the spread and expansion of these film-integrated cameras, the need for higher functionality has begun to emerge in recent years. That is, it has become desirable to have a film-integrated camera that has advanced functions such as strobe photography, zooming photography, and wide-angle photography. However, these advanced features are simple and
This is incompatible with the characteristics of film-integrated cameras, which are low cost and versatile, and various development issues have emerged.

[Problem to be solved by the invention]

In order to achieve both the above-mentioned sophistication of photographic functions and the simplicity and low cost that are the characteristics of film-type cameras, it is conceivable to configure the camera as a specialized type of simple camera whose use is limited to specific fields. .

For example, there are many astronomical observation photos of constellations and other topics that are of interest to the general public, such as the arrival of Halley's Plutonium and lunar eclipse phenomena.

However, the conditions for taking astronomical photographs are somewhat special, and in the past, it has been considered a field of interest only to some astronomical enthusiasts, as it sometimes requires specialized equipment. However, with a film-type camera, the shooting conditions can be set in advance at the manufacturing stage and configured at low cost, making it possible to develop a dedicated camera.

In view of the above points, it is an object of the present invention to provide a simple and inexpensive film-integrated camera for astrophotography that can be easily enjoyed by the general public.

[Means for Solving the Problems] In order to achieve the above object, the film-integrated camera of the present invention is provided with a wide-angle lens system whose focus is set to infinity and a bulb shutter, and eliminates the need for setting operations for photographing conditions. Both are designed to make it easier to take astronomical observation photographs.

〔Example〕

Hereinafter, the present invention will be described based on an embodiment shown in the accompanying drawings.

Figure 1 is an overall perspective view of the film-integrated camera of the present application, Figure 2
The figure shows the principle of the shutter opening/closing mechanism, FIG. 3 is a sectional view of the camera body, and FIG. 4 is a mirror for bending the path.

In the figure, 1 is the main body of the film-integrated camera of the present application;
The zero body 1 is constructed of a plastic case, and is provided with a spool chamber S, a battlerone chamber P, and a film F inside. The main body 1 is covered with a sheet of paper having a predetermined design printed thereon, so that a suitable appearance as a disposable camera can be obtained.

Reference numeral 2 denotes a shutter button, and this button 2 is provided on the upper surface of the main body l, and is used to shift an aperture 21 of a photographing lens 4, which will be described later, to an open exposure state. That is, when the button 2 is pressed, the rod 22 that is linked to the button 2
rotates the shutter blade 23 to set the opening 21 in the open state, and the notch portion 24 is engaged with the locking member 25 so that the open state can be maintained. Since the locking member 25 is spring biased toward the rod 22,
When the tip inclined portion is pressed by the notch portion 24, it is configured such that it once retreats and then extends and is locked to the notch portion 24.

Reference numeral 3 denotes a release lever, and the release lever 3 is for returning the opening 2l to the closed state, and can drive the locking member 25 in the retracting direction to release the locking state with the notch portion 24. It looks like this.

4 is a winding knob, and the winding knob 4 is provided on the back surface of the main body 1 so that a part thereof protrudes. The knob 4 may be made of plastic molded in a different color from the zero body 1 so as to be easy to see and operate.

5 is a photographic lens, and the photographic lens 5 has a focal length of 25 mm.
It is equipped with the following wide-angle lens and is configured to capture a wide range of subjects. Further, the optimum focal position of the photographing lens 5 is set to infinity. In other words, when taking astrophotography,
There is no need to perform any special adjustment work, and as long as the camera body 1 is fixed with appropriate means, it is possible to take pictures in an appropriate state.

Reference numeral 6 denotes a finder, and the finder 6 consists of a transparent through hole provided at a suitable position in the upper part of the main body 1. Reference numeral 7 denotes a mirror provided at a suitable location on the finder 6, and the mirror 7 can bend the optical path from the object field. The mirror 7 is formed by pasting a vapor-deposited film on a plastic back plate 7a, and is provided on the bottom surface of the finder 6 so as to be tiltable within the range of 0 to 45 degrees (FIG. 4). That is, when the mirror 7 is tilted horizontally (0 degrees), the finder 6 becomes a simple through-the-view finder, but when it is raised (45
The camera is configured so that light from the object field can be reflected upwards from the object 1. For this reason, if the camera body 1 is set upward, the mirror 7 must be raised and the camera body 1
All you have to do is look through the viewfinder 6 from the side (horizontal direction), and you can capture the sky, which is the subject, without having to take an unreasonable posture.

8 is a counter indicating the number of remaining films.

In the above embodiment, the photographer fixes the main body 1 of the film-type camera of the present invention to, for example, a tripod stand with screws, faces the photographing lens 5 upward, and presses the shutter button 2. At this time, since the photographing lens 5 is set in advance to infinity, no focusing operation is necessary, and since the wide-angle field of view corresponds to the sky, framing is easy. Moreover, since the sky, which is the object field, can be seen through the mirror 7, there is no need to take an unreasonable posture of looking up at the sky. When the button 2 is pressed, the shutter blade 23 rotates and the opening 21 is opened. Further, the notch portion 24 is locked to the locking member 25 to maintain the open state. After continuing exposure in this state for a predetermined period of time (several minutes for photographing fireworks or stars, or several minutes to several hours for photographing moving constellations), press the release button 3 and move the locking member 25 in the retracting direction. The aperture 2l is returned to the closed state, and photographing is completed.

〔Effect of the invention〕

As mentioned above, the film-integrated camera of the present invention is characterized by a wide-angle lens system whose focus is set to infinity and a bulb shutter, making it extremely easy to take astrophotography without adjusting the shooting conditions. It can be carried out.

As a result, it has become possible to take astronomical observation photographs, which were previously thought to be outside the scope of simple cameras.This has the excellent effect of opening up new fields of application for film-integrated cameras and expanding their uses in a variety of ways. It is.

[Brief explanation of drawings]

Figure 1 is an overall perspective view of the film-integrated camera of the present application, Figure 2
The figure shows the principle of the shutter opening/closing mechanism, FIG. 3 is a sectional view of the camera body, and FIG. 4 is a mirror for bending the path. - Camera body: shutter button, release button, winding knob, photographic lens, viewfinder - mirror counter opening Rondo shutter blade 2 Notch portion 24 Locking member 1 2 3 4 5 6 7 8 21 22 23 24 25 3 Fig. 1 Figure 2 Figure 3 Figure 4 Figure ↑

Claims (1)

[Claims] A film-integrated camera that features a wide-angle lens system that focuses at infinity and a bulb shutter.