Parallax correction device for use in a multiphotographic device

Claim 2

A parallax correction device for use in a multiphotographic device having a photographic lens comprising a first pair of adjacent substantially parallel movable plates each having an elongated slot said elongated slots being perpendicular to each other and overlapping, thereby forming an aperture; means for moving each of said pair of movable plates along a linear path which is perpendicular to the respective elongated slot, thereby changing the position of the aperture relative to the lens; a second pair of movable plates disposed in the optical system of a viewfinder and each of said second pair of movable plates having slots for delimiting the portion of an object or scene to be photographed; and interlocking means interconnecting said first and said second pairs of movable plates for moving respective ones of said second pair of movable plates in directions opposite to the directions of movement of said first pair of movable plates when said first pair of movable plates are moved so as to form an aperture.

Claim 3

The device of claim 1 comprising a second interlocking means adapted to move toward or away from said photographic lens the movable plates disposed in the optical system of the viewfinder when an adjustment of the photographing distance is made.

Claim 4

A parallax correction device for use in a multiphotographic device comprising a lens; a pair of adjacent substantially parallel movable plates each having an elongated slot, said elongated slots being perpendicular to each other and overlapping, thereby forming an aperture; means for moving each of said pair of movable plates along a linear path which is perpendicular to the respective elongated slot, thereby changing the position of the aperture relative to the lens; indicating means for indicating the portion of an object being photographed which will be imaged on the image plane of the lens; means for adjusting the indicating means in accordance with movement of the photographing aperture and thereby varying the portion of the object being photographed which is indicated by the indicating means; and means for adjusting the indicating means in accordance with the focusing adjustment of the lens and thereby compensating for parallax errors due to differences between the location of the lens axis and the point of view of the indicating means; said focus-adjusting means comprising a mirror adapted for rotative movement by said focusing adjustment and a linkage interconnecting said mirror with said indicating means for transmission of said movement thereto.

Claim 5

A parallax correction device for use in a multiphotographic device comprising a lens; a pair of adjacent substantially parallel movable plates each having an elongated slot, said elongated slots being perpendicular to each other and overlapping, thereby forming an aperture; means for moving each of said pair of movable plates along a linear path which is perpendicular to the respective elongated slot, thereby changing the position of the aperture relative to the lens; indicating means for indicating the portion of an object being photographed which will be imaged on the image plane of the lens; means for adjusting the indicating means in accordance with movement of the photographing aperture and thereby varying the portion of the object being photographed which is indicated by the indicating means; and means for adjusting the indicating means in accordance with the focusing adjustment of the lens and thereby compensating for parallax errors due to differences between the location of the lens axis and the point of view of the indicating means; said focus-adjusting means comprising a mirror adapted for rotative movement by said focusing adjustment and a linkage interconnecting said mirror with said indicating means for transmission of said movement thereto.

Claim 6

A parallax correction device for use in a multiphotographic device comprising: a photographing lens having an optical axis; an opaque first moveable plate disposed in the path of light travelling through the lens from the object being photographed to the image plane of the lens; an opaque second movable plate disposed adjacent to and substantially parallel to the first movable plate; means for constraining the first movable plate to move back and forth only in a first direction transverse to the optical axis of the lens; means for constraining the second movable plate to move back and forth only in a second direction transverse to the first direction and transverse to the optical axis of the lens; a first slot in the first movable plate extending transversely to the first direction; a second slot in the second movable plate extending transversely to the second direction and to the first slot, said first and second slots crossing to define a photographing aperture positioned in the path of light travelling through the lens from the object being photographed to the image plane of the lens, said photographing aperture being sufficiently small to be displaceable between a plurality of nonoverlapping positions within said light path as a result of movement of a movable plate; a viewfinder having an optical axis; a movable first indicator visible in the viewfinder aligned to delimit those borders of the object being photographed which extend perpendicularly to the first direction; a movable second indicator visible in the viewfinder aligned to delimit those borders of the object being photographed which extend perpendicularly to the second direction; means for moving the first indicator in a direction opposite to the direction of movement of the first movable plate upon motion of said first movable plate; and means for moving the second indicator in a direction opposite to the direction of movement of the second movable plate upon motion of said second movable plate.

Claim 7

A parallax correction device for use in a multiphotographic device comprising: a photographing lens having an optical axis; an opaque first moveable plate disposed in the path of light travelling through the lens from the object being photographed to the image plane of the lens; an opaque second movable plate disposed adjacent to and substantially parallel to the first movable plate; means for constraining the first movable plate to move back and forth only in a first direction transverse to the optical axis of the lens; means for constraining the second movable plate to move back and forth only in a second direction transverse to the first direction and transverse to the optical axis of the lens; a first slot in the first movable plate extending transversely to the first direction; a second slot in the second movable plate extending transversely to the second direction and to the first slot, said first and second slots crossing to define a photographing aperture positioned in the path of light travelling through the lens from the object being photographed to the image plane of the lens, said photographing aperture being sufficiently small to be displaceable between a plurality of nonoverlapping positions within said light path as a result of movement of a movable plate; a viewfinder having an optical axis; a movable first indicator visible in the viewfinder aligned to delimit those borders of the object being photographed which extend perpendicularly to the first direction; a movable second indicator visible in the viewfinder aligned to delimit those borders of the object being photographed which extend perpendicularly to the second direction; means for moving the first indicator in a direction opposite to the direction of movement of the first movable plate upon motion of said first movable plate; and means for moving the second indicator in a direction opposite to the direction of movement of the second movable plate upon motion of said second movable plate.

Claim 8

The device of claim 4 in which the first direction is substantially parallel to a line between the optical axis of the lens and the optical axis of the viewfinder and comprising means for moving the first indicator in the first direction in response to changes in focus of the photographing lens and thereby correcting for parallax errors caused by the separation of the optical axes of the lens and the viewfinder.

Claim 9

The device of claim 4 wherein the first and second indicators comprise parallel adjacent opaque plates pierced by slots, said slots allowing the passage of light therethrough into the viewfinder.

Claim 10

The device of claim 4 wherein the means for moving the first indicator upon motion of the first movable plate comprises a lever extending between the first movable plate and the first indicator and rotatable about a pivot axis intermediate the first movable plate and the first indicator.

Claim 11

The device of claim 7 comprising means to vary the position of the pivot axis in response to changes in the position of the lens during focusing and thereby to move the first indicator in the first direction for the correction of parallax errors caused by the separation of the optical axes of the lens and the viewfinder.

Claim 12

The device of claim 7 wherein the means for moving the second indicator upon motion of the second movable plate comprises a lever extending between the second indicator and the second movable plate and rotatable about a pivot axis intermediate the second movable plate and the second indicator.