Electronic flashgun

Details Electronic flashgun Electronic flashgun

1980-09-22

1982-05-04

Griffin, Donald A.

G03B 1503

Patent

active

043279813

ABSTRACT:
The invention relates to an electronic flashgun comprising an arithmetic unit (9) for computing a diaphragm stop number-distance combination, the arithmetic unit comprising a transparent element (11) with a pointer (10). This element is connected to a neutral density filter disc (21) having a variable density and located in front of a light cell (6) provided at the light exit side of the flashgun. The pointer directly indicates a diaphragm stop number on a diaphragm stop number scale (13) of the arithmetic unit.

REFERENCES:
patent: 4023188 (1977-05-01), Ueda et al.
patent: 4175279 (1979-11-01), Asaki
patent: 4230402 (1980-10-01), Uchiyama et al.

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