Apparatus for synchronizing an electronic flash with a camera

Details Apparatus for synchronizing an electronic flash with a camera Apparatus for synchronizing an electronic flash with a camera

1975-11-14

1978-02-14

Adams, Russell E.

354 33, 354 50, 354 60F, G03B 716

Patent

active

040742903

ABSTRACT:
An apparatus for activating an electronic flash by operating an X contact when the first blind of a focal plane shutter has terminated its movement to fully open an exposure light path, irrespective of an exposure period establishing operation. Where an electronic focal plane shutter is combined with an auto-strobo, a photometric circuit within the electronic circuit is used to measure the radiation from the auto-strobo, and to control the amount of exposure to a proper value. Where a proper amount of exposure is available by natural light when the shutter is opened, a closing movement of the shutter is utilized to cause the trigger capacitor of the electronic flash to be discharged, thereby disabling the illumination of the electronic flash.

REFERENCES:
patent: 3568582 (1971-03-01), Uchida et al.
patent: 3675547 (1972-07-01), Uchiyama et al.
patent: 3779141 (1973-12-01), Ueda et al.

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