Camera with battery testing device

Details Camera with battery testing device Camera with battery testing device

1975-09-22

1978-02-07

Hix, L. T.

G03B 700

Patent

active

040729605

ABSTRACT:
A camera incorporating a light-meter and a battery-powered lamp for indicng when the level of incident light is so low as to be unsuitable for photography also includes means for determining the state of charge of the battery. The possibility of making an erroneous determination of the state of charge of the battery as the result of failing to cover the photosensitive element during the determination of the state of charge is eliminated.

REFERENCES:
patent: 3153375 (1964-10-01), Zapp
patent: 3699857 (1970-07-01), Wagner et al.
patent: 3742831 (1973-07-01), Cator et al.
patent: 3836985 (1974-09-01), Lange
patent: 3849769 (1974-11-01), Chiba

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