Photography – Flash system responsive to focal length or distance – Illumination angle responds to focal length or distance
Patent
1997-07-23
1998-06-09
Gray, David M.
Photography
Flash system responsive to focal length or distance
Illumination angle responds to focal length or distance
396149, 396199, 396377, 396383, G03B 1503, G03B 300
Patent
active
057650470
ABSTRACT:
A lens camera having a viewfinder mechanism and an adjustable strobe light generating unit, wherein the zoom viewfinder mechanism has a disk cam to cause a lens group of a viewfinder optical system to move back and forth in an optical axis direction according to a difference of the distances in the radial direction from the rotation center of shafts of individual lenses of the lens group, the shafts fitting in grooves of the disk and driving the individual lenses of the lens group in order to perform variable power of a zoom viewfinder. Drive gears drive the disk cam and one of the drive gears is a helical gear which has a predetermined angle for a lead angle, the rotation center of the disk cam and the rotation axis direction of the one drive gear being positioned so as to intersect. The strobe light generating unit is moved in the direction of the optical axis of the camera so that a radiating angle of a strobe fitted in the strobe light generating unit is changed according to the variable power of operation of the lens. Jaw portions are integrally formed on the strobe light generating unit and engage rail grooves formed on the body of the camera.
REFERENCES:
patent: 4768048 (1988-08-01), Wakabayashi
patent: 4945372 (1990-07-01), Higuchi et al.
patent: 4965615 (1990-10-01), Fujita et al.
patent: 5036346 (1991-07-01), Hatamori et al.
patent: 5280315 (1994-01-01), Nomura et al.
patent: 5321454 (1994-06-01), Mogamiya
patent: 5335030 (1994-08-01), Suzuka
patent: 5337109 (1994-08-01), Ogawa
patent: 5345285 (1994-09-01), Hasushita et al.
patent: 5424796 (1995-06-01), Kondoh
patent: 5438381 (1995-08-01), Mogamiya et al.
U.S. application No. 08/354,912, Miyamoto et al., filed Dec. 13, 1994.
Kato Minoru
Miyamoto Hidenori
Omi Junichi
Soshi Isao
Gray David M.
Nikon Corporation
Tuccillo Nicholas J.
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