Exposure indicator

Details Exposure indicator Exposure indicator

1981-11-25

1984-05-22

McGraw, Vincent P.

Optics: measuring and testing

Photometers

Photoelectric

35428912, 354474, G01J 142

Patent

active

044498225

ABSTRACT:
An exposure indicator for use in a light meter includes a light measuring device including a light receiving element for producing an electrical signal representing the brightness of the light received by the light receiving element, and a circuit for changing the electrical signal from the light measuring device by an amount determined by a setting mechanism. A first indicator is provided for indicating a value of an exposure parameter, such as an aperture F-stop value, based on the changed signal, and a second indicator is provided for indicating a density of a reproduced film in accordance with the electrical signal from the light measuring device and the changed signal.

REFERENCES:
patent: 3843249 (1974-10-01), Kitaura
patent: 4032933 (1977-06-01), Ito et al.
patent: 4176955 (1979-12-01), Yamada et al.
patent: 4182573 (1980-01-01), Yamada et al.
patent: 4229108 (1980-10-01), Childers

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