JPH04245234A - Simple form camera - Google Patents

Abstract

PURPOSE:To provide an optical finder having a wide angle of view field by installing a lens system in a finder of frame type having a standard view field angle. CONSTITUTION:A finder frame 21 covering the whole view field of a finder of frame type is installed between an eyepiece frame 31 and an objective frame 41 constituting the finder, and an objective lens L1 and eyepiece lens L2 are fitted in the finder frame 21. Thereby an optical finder is accomplished, which has a wide view field angle.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple camera, also called a disposable camera, which is preloaded with film and can immediately take pictures.

0002

[Prior Art] As is well known, a disposable camera is a camera that is preloaded with film, and is used only for taking pictures of one roll of film, and after the built-in film has finished taking pictures, the film remains loaded in the camera. Since the camera is sent to a photo lab, it is essential that the camera be inexpensive.

On the other hand, recently, due to the diversification of photographic uses, in addition to the conventionally available simple cameras that take pictures of standard-sized screens, there are also simple cameras of different product series, such as those for wide-angle photography and panoramic photography. As more and more cameras become available, there is a tendency for the camera bodies themselves to become more diverse.

0004

[Problem to be Solved by the Invention] Since the diversification of camera bodies causes an increase in the types of parts and a decrease in the efficiency of assembly work, the above-mentioned simple cameras for wide-angle and panoramic photography are designed as much as possible. It is desired that each member constituting a conventional standard size simple camera can be shared. For example, this also applies to finder portions with different fields of view.

[0005] As a result of solving this problem and improving the present invention,
The object of the present invention is to provide, at a low price, a simple camera with different viewfinder fields of view and different product series by assembling extremely simple members through easy work.

[0006]

[Means for Solving the Problems] The above object is to provide a simple camera equipped with a frame-type finder that corresponds to a shooting range of a standard angle of view, by incorporating a lens into the finder to enable the camera to shoot a wide-angle or panoramic angle of view. This is achieved by a simple camera characterized by being equipped with an optical finder that corresponds to the photographing range.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIGS. 1 to 4.

FIG. 1 is an external view of a simple camera A, also called a disposable camera, which accommodates 35 mm film (J135). In the figure, 1 is a photographic lens, 2 is a finder,
3 indicates a shutter button, which is of standard size (24 x 36 mm) by attaching the photographing lens 1 with a focal length of around 35 mm.
A photo of the screen is taken.

The camera A is constructed by integrating a camera body, which includes a photographing lens 1, a shutter and film winding mechanisms, a film storage chamber, etc., by sandwiching them between front and rear covers that also serve as exterior members. be done.

A cross section of the camera A taken along arrow AA is shown in FIG.

Reference numeral 10 denotes the above-mentioned camera body, and the photographing lens 1 is mounted and supported on the front surface of the integrally formed light-shielding tube 11 with the shutter unit 4 sandwiched therebetween.

Reference numerals 20 and 30 denote the front cover and the rear cover, respectively, which are the aforementioned exterior members, and these exterior members are integrally fixed to the camera body 10 by engaging their locking claws with each other.

Reference numeral 21 denotes a finder frame integrated with the front cover 20, and a square hole 22A is formed in the upper wall of the front frame portion 21A.
A notch hole 22B is provided in the lower wall, and a long hole 22C is provided in the lower wall, while the rear frame portion 21B is in contact with the upright wall 12 of the camera body 10.

Reference numeral 40 denotes a mask plate attached to the front end surface of the finder frame 21, and the viewfinder field of the camera A indicating the standard angle of view photographing range is formed by the objective frame 41 provided on the mask plate 40 and the rear cover 30. This is determined by the frame-type finder formed from the provided eyepiece frame 31.

The frame-type finder can be easily converted from a standard view angle to a wide-angle or wide-angle panoramic view angle optical finder by incorporating an objective lens and an eyepiece into the finder frame 21.

Accordingly, the camera A can take panoramic photographs without using a special camera body or front and rear covers by changing the photographic lens and changing the screen frame size, as well as converting the frame finder to an optical finder. It becomes possible to commercialize the product as a simple camera B for use.

FIG. 3 shows that the camera A is equipped with a wide-angle photographing lens 1.
01 and a panoramic view angle optical finder 102 for panoramic photography. Camera B is also equipped with a lens hood and a lens hood to prevent images from being blurred by hands and fingers. Protective member 10 that also serves as
3 is installed.

FIG. 4 shows a cross section taken along arrow BB of the camera B.

Reference numeral L1 denotes a pair of rectangular objective lenses which are accommodated in the front frame portion 21A of the finder frame 21 in a state in which they are in contact with each other from front to back.

Each of the objective lenses L1 is a resin member formed by molding, and has protrusions P formed during molding on the upper and lower sides, and each protrusion P is inserted into the square hole using elastic deformation of the front frame portion 21A. 22A, and is attached to the finder frame 21 by engaging with the notch hole 22B or the elongated hole 22C. Therefore, even if the camera B is turned downward, the objective lens L1 will not fall off from the finder frame 21, making it easier to handle during assembly.

Further, L2 is an eyepiece lens, which is housed in the rear frame portion 21B of the finder frame 21. The eyepiece L2 is housed in the rear frame portion 21B, and then the front cover 20
It is held within the finder frame 21 by the abutment of the rising wall 12 as it is integrated with the camera body 10. By attaching the objective lens L1 and the eyepiece L2, a finder field of view corresponding to a wide-angle screen can be obtained.

Further, a mask plate 140 which also serves as a lens holder is attached to the front surface of the objective lens L1, and an objective frame 141 formed by the mask plate 140 provides a finder field of view corresponding to a wide-angle panoramic screen.

Therefore, by attaching a frame member 104 having a panoramic size screen frame 104A and a corresponding light shielding frame 104B to the light shielding tube 11 of the camera body 10, the camera B can be used as a simple camera for panoramic photography. Commercialized.

Note that the finder frame 21 is attached to the front cover 2.
0 may be an independent member as a finder unit separate from the finder unit 0. In that case, the finder unit is constructed so as to be supported by both the front cover 20 and the camera body 10.

On the other hand, the mask plate 10 has a front cover 20
If the cover is prepared exclusively for each camera, it is preferable to form it integrally with each front cover instead of taking the form of a single unit.

[0026]

[Effects of the Invention] The present invention makes it possible to convert a frame-type finder with a standard angle of view into an optical finder in which objective and eyepiece lenses are attached safely and securely with extremely simple work. As a result, it has become easy to assemble a wide variety of products, and a wide variety of simple cameras that can be used in a variety of applications at low prices have been provided.

[Brief explanation of the drawing]

FIG. 1 is a front view of a simple camera A that photographs a standard size screen.

FIG. 2 is a sectional view of a main part of the camera A.

FIG. 3 is a front view of a simple camera B that photographs a panoramic size screen.

FIG. 4 is a sectional view of a main part of the camera B. FIG.

[Explanation of symbols]

1 Photographing lens (for standard angle of view) 2 Finder (for standard angle of view) 10 Camera body 20
front cover 21
Finder frame 22A
Square hole 22B
Notch hole 22C Long hole 3
0 Rear cover 31
Eyepiece frame 101 (for wide angle of view) Photographing lens 102 (for wide angle of view) Finder

Claims (1)

[Claims] 1. A simple camera equipped with a frame-type viewfinder that corresponds to a standard angle of view shooting range, wherein a lens is incorporated into the finder, thereby converting the camera into an optical viewfinder that supports a wide-angle or panoramic angle of view shooting range. What is claimed is: 1. A simple camera comprising: