Digital light measuring device

Details Digital light measuring device Digital light measuring device

1978-12-13

1980-10-14

Corbin, John K.

Optics: measuring and testing

Photometers

Photoelectric

356215, 354 23D, 354 60F, G01J 142, G01J 146, G03B 708, G03B 700

Patent

active

042278082

ABSTRACT:
A digital light measuring device capable of measuring a flash of light generated by a separate source device, irrespective of trigger modes of an electronic flash selected in advance, which comprises means responsive to an incident light intensity for producing an input commensurate thereto; means for processing an output to form a digital signal indicative of a result of the light measurement; means for detecting the beginning of change in the output of the producing means caused by a flashing to generate a start signal for making the processing means begin the processing operation; means for controlling the operations of the processing means in a programmed sequence, and, where necessary, means for directing the controlling means to start the programmed sequence when a code-trigger mode is selectively chosen for the trigger mode of the electronic flash.

REFERENCES:
patent: 4096492 (1978-06-01), Land et al.

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