Patent · US Expired

Exposure controls for photographic apparatus

US4165166A · kind A · utility

1Cited by

4References

13Claims

0Family size

Assignee

AGFA-Gervaert AG · DE

Inventors

Dieter Engelsmann · Unterhaching, DE
Hubert Hackenberg · Munich, DE
Rolf Schroder · Wuppertal, DE

Key dates

Filing date	Apr 20, 1978
Grant date	Aug 21, 1979
Priority date	—
Expiry date	Apr 20, 1998

Classification

Technology area (CPC G)Physics
CPC primaryG03B7/16
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A photographic apparatus wherein the diaphragm is adjustable by a reciprocable selector which is provided with indicia denoting the scene brightness and the distance from the subject. The shutter is adjustable in dependency on the position of the selector, in dependency on the speed of film which is confined in the apparatus and in dependency on the condition of the apparatus, namely, whether the apparatus is set for the making of exposures in daylight or with flash. Cassettes which are used in the apparatus have markers denoting the film speed, and such markers influence the position of a reciprocable follower which can pivot a control lever loosely coupled to a shutter adjusting lever. The latter is pivotable by the control lever or by a motion transmitting lever whose position changes when a flashcube is attached to or detached from the housing of the apparatus.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.