Patent · US Expired

Camera lens focus and shutter aperture setting

US5416547A · kind A · utility

4Cited by
4References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 29, 1993
Grant dateMay 16, 1995
Priority date—
Expiry dateOct 29, 2013

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03B7/20
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A lens shutter camera includes a movable picture taking lens that can be moved along an optical axis and positioned at a focus setting such that a camera subject is in focus, an adjustable shutter aperture mechanism that controls the amount of ambient light passing through the picture taking lens for producing an exposure, and a drive source that moves the picture taking lens to position the lens at the focus setting; wherein movement of the picture taking lens toward the focus setting position simultaneously adjusts the shutter aperture mechanism to an exposure setting that permits a predetermined amount of ambient light necessary for proper exposure to pass through the lens.

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