Exposure meter circuit of camera with matching network for flash

Details Exposure meter circuit of camera with matching network for flash Exposure meter circuit of camera with matching network for flash

1975-06-09

1977-07-05

Hix, L. T.

354145, G03B 716

Patent

active

040343847

ABSTRACT:
The present invention relates to an exposure meter circuit of a camera with a matching network for a flash device with which camera auxiliary light photography can be carried out the flash device presents a detecting output terminal of a detecting network for detecting the level of the stored energy of an energy storing means provided in the flash circuit of the flash device, a voltage supply terminal for supplying the operation voltage to the detecting network and a synchronizing terminal for triggering the flash device. With this camera, daylight photographing can also be carried out without a flash device. The exposure meter circuit is characterized in that in the exposure meter circuit a current source is included for the exposure meter. A first switching means is connected with one electrode of the current source. Grounding of the current source occurs in functional connection with the switching of the flashlight photographing over to the daylight photographing. A second switching means is connected in the exposure meter circuit and switches off the light receiving means, where in the case of the flash photographing, the voltage is given to the supply terminal from the current source for the exposure meter by means of said first switching means so as to operate the detecting network. In the case of the daylight photographing, the light receiving means is connected in the exposure meter circuit by means of the first and the second switching means so as to bring the detecting network out of operation by grounding the current source.

REFERENCES:
patent: 3703130 (1972-11-01), Watanabe
patent: 3723810 (1973-03-01), Mashimo
patent: 3873827 (1975-03-01), Krause

Affiliated with

Also associated with

Rating

Exposure meter circuit of camera with matching network for flash does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exposure meter circuit of camera with matching network for flash, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure meter circuit of camera with matching network for flash will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-580931