Focus-switching camera

Details Focus-switching camera Focus-switching camera

1993-06-25

1995-10-10

Adams, Russell E.

Television

Special applications

Simulator

3541951, 348345, G03B 1336

Patent

active

054575125

ABSTRACT:
Apparatus for use in a focus-switching camera having an imaging optical system an optical condition (for example, a focal length) of which can be switched includes a detection circuit for detecting that the optical system is undergoing a focal length switching operation, and a successive control circuit for prohibiting a picture recording operation when the detection circuit detects that the optical system is undergoing a focal length switching operation. The camera may also include a successive photographing function, and the control circuit (1) stops successive photographing when the detection circuit has detected that the optical system is undergoing a focal length switching operation during successive photographing, and (2) resumes successive photographing when the optical system is no longer undergoing a focal length switching operation. When resuming successive photographing, the control circuit preferably determines whether or not predetermined characteristics of the optical system have changed from the moment before successive photographing has been stopped, and when there is a change in the predetermined characteristics, the control circuit resumes successive photographing after (1) measuring parameters corresponding to the changed characteristics of the optical system, and (2) resetting the parameters.

REFERENCES:
patent: 4529283 (1985-07-01), Ognima et al.
patent: 4544249 (1985-10-01), Maemori et al.

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