Distance measuring device for a camera

Details Distance measuring device for a camera Distance measuring device for a camera

1997-01-23

1998-02-24

Adams, Russell E.

Photography

Having wireless remote control circuit

396103, 396104, G03B 1700

Patent

active

057219702

ABSTRACT:
A distance measuring device for a camera uses a normal photographing mode which and a special photographing mode can be selected, and where in the special photographing mode includes a remote control photographing mode. The distance measuring device detects an object distance and judges whether the distance detection is effective or not, and a lens is driven based on a predetermined value when it is judged that the distance measurement is not effective in a normal photographing mode. In contrast, in a remote photographing mode, when it is judged that the distance measurement is not effective, the lens drive is not driven based on a predetermined value. Rather but an object distance is measured again, and thus a probability of in-focus photographing is improved.

REFERENCES:
patent: 4937604 (1990-06-01), Yoshida et al.
patent: 5093679 (1992-03-01), Taniguchi et al.
patent: 5184167 (1993-02-01), Iida et al.
patent: 5517276 (1996-05-01), Higaki et al.

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