Camera having autofocusing function and self timer function

Details Camera having autofocusing function and self timer function Camera having autofocusing function and self timer function

1999-12-20

2001-10-30

Perkey, W. B. (Department: 2851)

Photography

With exposure objective focusing means, focusing aid, or...

Dual purpose motor

C396S264000

Reexamination Certificate

active

06311020

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a camera having an autofocusing function and a self timer function. The present invention also relates to a camera having a plurality of photographing specifications for picture taking.
2. Description of the Related Art
Some widely used low cost, structurally simple, conventional cameras, have an autofocusing (AF) function and a self timer function, and are equipped with a mechanical shutter including two magnets, as actuators, for AF control and a self timer photographing control.
In a first type conventional camara that has the autofocusing function and the self timer function, the two magnets for the AF control and the self timer photographing control need separate drive control systems for driving the magnets this makea it difficult to implement such camaras at a low-cost and with a space saving design.
Some conventional cameras have a plurality of photographic modes (photographing specifications) for taking pictures, for example, a photographic mode using autofocusing control and a self timer photographic mode. A second type conventional camera, for example, has a plurality of electromagnets, as actuators, and operates any mode by switching the states of the electromagnets. A third type conventional camera, as another example, employs a single drive motor, which allows its power transmission system to perform the function in each mode by switching means which include an electromagnet.
Because of its plurality of electromagnets, the second type conventional camera is not only costly, but also requires a large layout space. Therefore, a compact design is not implemented in this camera. The third type conventional camera employs an electromagnet as a switching means for its power transmission system, but the electromagnet itself is not a mechanism for performing the function in each mode. A driven unit to which power is transmitted needs means such as another electromagnet or the like. Equally, the third type conventional camera not only becomes costly, but also presents difficulty in the promotion of compact design.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a camera having an autofocusing function and a self timer function, which allows a compact and low-cost design to be implemented. It is another object of the present invention to provide a camera having a plurality of photographing specifications, which allows a compact and low-cost design to be implemented.
In accordance with the present invention, a camera having an autofocusing function and a self timer function performs an autofocusing driving that performs an autofocusing function with a single electromagnet and a self timer control driving for performing a self timer function.
In accordance with the present invention, a camera, having a plurality of photographing specifications, includes electromagnetic means, which is one of means for allowing a first photographing specification to function, and which is also utilized to allow a second photographing specification to function.


REFERENCES:
patent: 4346972 (1982-08-01), Takahashi
patent: 4506966 (1985-03-01), Kuge
patent: 4582411 (1986-04-01), Ohmura et al.

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