Photography – Flash system responsive to focal length or distance – Illumination angle responds to focal length or distance
Patent
1996-03-08
1997-09-09
Metjahic, Safet
Photography
Flash system responsive to focal length or distance
Illumination angle responds to focal length or distance
396175, G03B 1502, G03B 1506
Patent
active
056665644
ABSTRACT:
A photographic flash apparatus includes a flash tube for producing a flash of light; a reflector located behind the flash tube for concentrating the light produced by the flash tube into a beam having a particular scene coverage angle; and an adjustable wave-lens device positioned in the beam to adjust the scene coverage angle of the beam. The adjustable wave-lens device includes first and second wave-lens elements and a lever for displacing one of the wave-lens elements with respect to the other to vary the optical power of the adjustable wave-lens element, thereby adjusting the scene coverage angle of the beam.
REFERENCES:
patent: 3305294 (1967-02-01), Alvarez
patent: 3583790 (1971-06-01), Baker
patent: 4312582 (1982-01-01), Pizzuti et al.
patent: 4338011 (1982-07-01), Pizzuti
patent: 4515453 (1985-05-01), Wakabayashi et al.
patent: 4821053 (1989-04-01), Dowe et al.
patent: 4914461 (1990-04-01), Hori
patent: 4965615 (1990-10-01), Fujita et al.
patent: 4983998 (1991-01-01), Hirohata et al.
patent: 4991063 (1991-02-01), Stoneham
patent: 5012262 (1991-04-01), Mogamiya et al.
patent: 5040007 (1991-08-01), Hagiuda
patent: 5050044 (1991-09-01), Shibayama
patent: 5083146 (1992-01-01), Ueda
patent: 5126778 (1992-06-01), Wheeler et al.
patent: 5157429 (1992-10-01), Haraguchi et al.
patent: 5331362 (1994-07-01), DiRisio
patent: 5477292 (1995-12-01), Kanai et al.
patent: 5543875 (1996-08-01), Machida et al.
Close Thomas H.
Eastman Kodak Company
Mahoney Christopher E.
Metjahic Safet
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