Common drive for shutter blades and objective lens assembly

Details Common drive for shutter blades and objective lens assembly Common drive for shutter blades and objective lens assembly

G - Physics

03

B

95/53.4

G03B 7/08 (2006.01) G02B 7/28 (2006.01) G02B 7/40 (2006.01) G03B 3/10 (2006.01) G03B 9/08 (2006.01)

Patent

CA 1305626

7361 COMMON DRIVE FOR SHUTTER BLADES AND OBJECTIVE LENS ASSEMBLY ABSTRACT OF THE DISCLOSURE The shutter blades of a scanning blade shutter and the movable element of an adjustable focus lens in a single lens reflex camera are actuated by a single or common drive. The scanning blade shutter is coupled to the common drive by a rotatably mounted beam member. The movable lens element is also coupled to the common drive through a drive link assembly and the same beam member. Actuation of the beam member by the common drive simul- taneously moves the shutter blades in the single lens reflex camera toward their closed positions and moves the lens element coupled thereto by a drive link assembly toward a rangefinder determined lens focal position. A solenoid coupled to a drive link in the drive link assem- bly and responsive to rangefinder-derived object distance signals actuates the drive link to uncouple the movable lens element from the beam member when the movable lens element has been moved to a particular focal position determined by the rangefinder. The common drive then moves the shutter blades to their full closed positions after the movable lens element has been uncoupled. The drive link connection between the beam member and the movable lens element is re-established subsequent to film exposure to thereby enable the common drive to return the movable lens element to its initial focal position while moving the shutter of the single lens reflex camera to its full open position.

583757

Affiliated with

Also associated with

Rating

Common drive for shutter blades and objective lens assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Common drive for shutter blades and objective lens assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Common drive for shutter blades and objective lens assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1244994