Optics: measuring and testing – Contour plotting
Patent
1978-12-26
1981-03-31
Evans, F. L.
Optics: measuring and testing
Contour plotting
33 1M, 33 20D, G01C 1112
Patent
active
042590108
ABSTRACT:
A restitution instrument for measuring and evaluating picture plates. The instrument includes a mounting stage for mounting the plate. The stage has two edges forming a 90.degree. angle. A carriage means attached to the stage, is used for guiding the stage free of rotation in directions parallel to the edges, i.e., X and Y directions. A drive means is attached to the stage for driving the stage in the X and Y directions along the carriage means. The drive means includes a drive unit slidably mounted to each of the edges and a drive member driven by a drive motor. The member is mounted at 90.degree. to the edge. The member drives the stage in a line of motion perpendicular to the edge. The lines of motion of each of the members intersects at a fixed point whose projection on to the stage falls upon an image point under observation. The drive means includes a measuring means for determining the distance the stage is driven in each of the X and Y directions. A stationary support member is located in close proximity to the image point. The drive members are braced against the member. The apparatus includes an optical observation system for viewing the image point. The system has a measuring mark and a beam splitter prism supported by the support member. The instrument provides increased accuracy and stability when compared with known restitution instruments.
REFERENCES:
patent: 2555106 (1951-05-01), Beazley
patent: 2941136 (1960-06-01), Marantette et al.
patent: 3495519 (1970-02-01), Alfsen et al.
patent: 3659939 (1972-05-01), Hobrough
patent: 3675331 (1972-07-01), Ernst et al.
patent: 3687547 (1972-08-01), Hobrough et al.
patent: 3777055 (1973-12-01), Hobrough
patent: 3918167 (1975-11-01), Gerber
patent: 4057336 (1977-11-01), Malinge
Whistler: R.C.A. Technical Notes, No. 339, Nov. 1959, 2 sheets.
Technical Bulletin entitled, Analytical Stereoplotter by Marta Optical Division.
Evans F. L.
Kern & Co. AG
LandOfFree
Apparatus for measuring and evaluating a picture plate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for measuring and evaluating a picture plate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring and evaluating a picture plate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2240473