Autofocusing controlling apparatus for camera

Details Autofocusing controlling apparatus for camera Autofocusing controlling apparatus for camera

1994-02-16

1996-03-19

Perkey, W. B.

354409, 354 94, 354159, G03B 1336, G03B 1718, G03B 3700

Patent

active

055007074

ABSTRACT:
An autofocusing controlling apparatus for a camera is disclosed. The controlling apparatus is provided with a beam breakage judging means for judging whether or not there is a breakage in each of the multiple beams received. The beam which has no or the least breakage is selected and autofocusing control is executed on the basis of the information on the subject distance measured by the selected beam, thereby preventing an error in the measurement of the subject distance due to a shift of the center of gravity of a beam in the direction of the base length. A light emitting portion includes not only a light emitting device for projecting a light beam onto the object of photography in the panoramic photographing region but also a light emitting device for projecting a light beam onto the object outside the panoramic photographing region so as to measure the distance of the object outside the panoramic photographing region. When the object in the panoramic photography region is judged to extend beyond the panoramic photography region, the user is warned it or the panoramic photography mode is automatically switched over to the ordinary photography mode. If the no-signal state in which there is no information supplied from the object when the subject distance is measured during panoramic photography, the photographing lens is automatically set at the position at which the photographing lens is situated in the distant photography mode, thereby improving the resolution of a panoramic photograph.

REFERENCES:
patent: 4583831 (1986-04-01), Harvey
patent: 4827303 (1989-05-01), Tsuboi
patent: 4943824 (1990-07-01), Nabeshima et al.
patent: 5307111 (1994-04-01), Kurei

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