Abstract A multiple scan optical recording apparatus combined with a procedure for operation of a cathode ray tube whereby a single sweep has a first pass across the full face of the tube, and then jumps down and returns with a second pass across the full face in substantially parallel opposite relation to the first pass, which includes an optical system to translate such passes in a lined front to end relationship onto a light-sensitive film moved at a controlled speed relative to the optical system. In essence, the optical system incorporates a substantially right angular flat medium having the ability to change the direction of light rays positioned with the apex thereof aligned between the parallel passes with the angle of each side of the medium at about 45* angular relation to the face plate, with associated reflective surfaces to align the rays emitted from the medium in successive front to end relation and project such aligned relation onto the light-sensitive film.
An apparatus accordinG to claim 1, where the movement of the light-sensitive recording means is coordinated to correspond with the sweep rate directed onto the face plate of the cathode ray tube.
Claim 2
Dependent Claim
249 words
In an optical apparatus to increase the number of resolvable elements in the recorded display of a cathode ray tube the combination of: a cathode ray tube having a display face plate; means to alter the normal raster sweep of the cathode ray tube so that each complete sweep makes at least two passes across the face plate whereby each successive pass is stepped immediately to make a reverse pass in spaced parallel relation thereto; a plurality of first flat reflective surfaces extending from the surface of the faceplate between each pass and the full length thereof at a 45* angle to the faceplate; a plurality of second flat reflective surfaces mounted in fixed relation perpendicular to the faceplate at one end of the first flat reflective surfaces and inclined at a 45* angle to the planes thereof and at a 45* angle to the intersection of said first reflective surfaces to the face plate; a light-sensitive filmstrip movable in a plane adjacent the edge of the cathode ray tube and substantially perpendicular to the plane of the faceplate and all the first flat reflective surfaces in a path to receive images reflected by the second flat reflective surfaces; and lens means between the light-sensitive filmstrip and the second flat reflective surfaces for focusing the images reflected from the second flat reflective surfaces onto the filmstrip whereby the passes illuminated on the faceplate of the cathode ray tube will be aligned in end to end relation on the filmstrip.
Claim 3
Dependent Claim
15 words
An apparatus according to claim 3 where the first and second reflective surfaces are mirrors.
Claim 4
Dependent Claim
24 words
An apparatus according to claim 3 where two passes constitute a sweep and there are two first reflective surfaces and two second reflective surfaces.
Claim 5
Dependent Claim
36 words
An apparatus according to claim 3 where the internal side of the faceplate is masked to define narrow elongated parallel spaced slits to more accurately represent the passes on the faceplate of the cathode ray tube.