Device for correcting positional deviation and reduced scale of

Details Device for correcting positional deviation and reduced scale of Device for correcting positional deviation and reduced scale of

1976-02-27

1978-07-25

Aegerter, Richard E.

Geometrical instruments

Miscellaneous

Light direction

G06G 700

Patent

active

041020480

ABSTRACT:
In a device for correcting, with respect to the reference plane of an object having a group of contour lines thereon, the positional deviation and variation in the reduced scale created corresponding to the height of each contour line when the object is photographed through a photographic objective, there is provided means for tracing each of the contour lines photographed on the film and generating a position signal for each of the contour lines. A correction mechanism is rotatably supported at a point (N), and has introduced thereinto the ratio between the distance (H) from the center of the photographic objective to the reference plane of the object and the distance (.DELTA.H) from any of the contour lines being traced by the signal generating means to the reference plane. The correction mechanism receives at the input side thereof the position signal from the signal generating means to generate a position signal (P') which satisfies the relation that P' = (1 - (.DELTA.H/H)P, where P is the input signal from the signal generating means. The signal generating means and the correction mechanism are associated together so that the correction mechanism satisfies the relation that P=P'=O when the signal generating means traces the principal point of the film. Means is provided for detecting and indicating the position signal (P') from the correction mechanism.

REFERENCES:
patent: 1471869 (1923-10-01), Turner
patent: 1943205 (1934-01-01), Coradi
patent: 2300326 (1942-10-01), Wesleysmith
patent: 2729892 (1956-01-01), Grueltner
patent: 3465444 (1969-09-01), Blachut et al.
patent: 3614410 (1971-10-01), Bailey

Affiliated with

Also associated with

Rating

Device for correcting positional deviation and reduced scale of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for correcting positional deviation and reduced scale of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for correcting positional deviation and reduced scale of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1414248