Exposure indicating device

Details Exposure indicating device Exposure indicating device

1976-07-28

1978-02-28

Hix, L. T.

354 60L, G03B 708, G03B 1718

Patent

active

040770435

ABSTRACT:
An exposure indicating device for use in a photographic camera which includes a light measuring circuit for generating an output representative of scene brightness, a reference voltage circuit for producing reference voltage, a first switching circuit and a second switching circuit receiving the outputs of the light measuring and reference voltage circuits, and indicating means responsive to outputs of the first and second switching circuits. The indicating device indicates that automatically controlled exposure factor, i.e., shutter speed or diaphragm aperture, will be higher or lower with respect to more than one standards, without any change-over of switches. For example, this device indicates that shutter speed to be effected automatically will be in any of blur occurring range, available range and upper outside range.

REFERENCES:
patent: 3581643 (1971-06-01), Yoshimura
patent: 3936842 (1976-02-01), Nanba et al.
patent: 3987464 (1976-10-01), Kitai et al.

Affiliated with

Also associated with

Rating

Exposure indicating device 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 indicating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure indicating device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1678665