Abstract: A method for reproducing an object surface wherein a time succession of spatially encoded different radiant energy patterns are projected at the object surface and records are made of the object surface during such projections from two or more spatially separated locations. The sets of records recorded at the separate spatial locations are then utilized to determine the spatial points on the object surface.

Abstract: A method and apparatus for determining spatial information regarding the points on an object situated in an object space wherein substantially planar laterally spaced diverging radiant energy beams are applied to the object space and a recording means records the reflected radiant energy in such space from a position whereat the radiant energy from points in the space and along the radiant energy beams is uniquely defined.

Abstract: A plurality of projectors are positioned in spaced relationship about an object with a surface to be geometrically analyzed. The projectors have cooperating masks which project onto the object illuminated patterns that subdivide the object into predetermined sections. Each mask has a predetermined pattern of sections, and is applied in sequence. The masks are cooperatively advanced in the projectors, with a separate illuminating pattern prevailing on the object each time that the masks are advanced. The combinations of the patterns on the masks define closely-spaced sections subdividing the object. The patterns are coded so that each section is uniquely defined in coded form. Cameras having the entire object within their field of view, photograph the object each time a separate mask is applied. To sense sections of the surface independent of the reflectance characteristics of the surface, the projectors direct two separate illuminating signals at the object surface.

Abstract: In a method for defining the spatial location of points comprising an object surface, radiant energy is projected onto the object in successive steps with the energy projected in each step having a unique change in intensity with distance along an axis extending transversely of the projection field. The spatial locations of surface points are derived by comparison of reflected intensity information derived from records of the object so irradiated and predetermined patterns derived in accordance with the intensity changes with transverse distance in the respective energy projections.

Abstract: A plurality of projectors are positioned in spaced relationship about an object with a surface to be geometrically analyzed. The projectors have cooperating masks which project onto the object illuminated patterns that subdivide the object into predetermined sections. Each mask has a predetermined pattern of sections, and is applied in sequence. The masks are cooperatively advanced in the projectors, with a separate illuminating pattern prevailing on the object each time that the masks are advanced. The combinations of the patterns on the masks define closely-spaced sections subdividing the object. The patterns are coded so that each section is uniquely defined in coded form. Cameras having the entire object within their field of view, photograph the object each time a separate mask is applied. The patterns or sections are parallel planes projected through a mask onto the object.

Abstract: In a method for defining the spatial location of points comprising an object surface, pulsed radiant energy is projected onto the object surface and collections of object-reflected radiant energy are conducted separately in accordance with respective different time patterns which are mutually overlapping in time.

Abstract: A plurality of projectors are positioned in spaced relationship about an object with a surface to be geometrically analyzed. The projectors have cooperating masks which project onto the object illuminated patterns that subdivide the object into predetermined sections. Each mask has a predetermined pattern of sections, and is applied in sequence. The masks are cooperatively illuminated in the projectors, with a separate pattern prevailing on the object each time that a separate mask is illuminated. The combinations of the patterns on the masks define closely-spaced sections subdividing the object. The patterns are coded so that each section is uniquely defined in coded form. Cameras having the entire object within their field of view, photograph the object each time a separate mask is illuminated. The patterns or sections are generated by parallel lines projected through a mask onto the object.

Abstract: The surface to be sensed or scanned is placed in the path of a projector which is moved along an axis of the surface. The path of motion of the projector is subdivided into predetermined sections which are illuminated by the projector in accordance with a predetermined sequential pattern. This procedure of moving the projector is repeated a predetermined number of times, with a separate illuminating pattern prevailing each time that the projector is moved relative to the surface and traverses the entire surface to be scanned. The combinations of the patterns obtained from the repeated scannings of the projector define closely-spaced sections of the surface. The patterns are coded so that each section is uniquely defined in coded form. A camera having the entire surface within its field of view photographs the surface each time that the projector is moved along the axis of the surface.

Abstract: An arrangement for machining surfaces with a numerically controlled tool in which the tool is provided with a parabolic profile to obtain a substantially smooth surface finish. The workpiece to be machined is moved relative to the cutting tool in substantially a plane of the workpiece. After milling a contour along that plane, the workpiece or the tool is incremented to an adjacent parallel plane for the purpose of milling another contour on the workpiece. The slope of the surface element on the workpiece between the adjacent planes is computed, and the cutting tool is oriented so that the portion of the tool in contact with the workpiece along that surface element, possesses the computed slope. The cutting tool may be formed with cutting edges having straight-line segments interconnected and directed substantially along a parabolic surface. The slopes on the cutting edges of the tool vary in magnitude from substantially zero to infinity.

Abstract: An arrangement for machining surfaces with a numerically controlled tool in which the tool is provided with a parabolic profile to obtain a substantially smooth surface finish. The workpiece to be machined is moved relative to the cutting tool in substantially a plane of the workpiece. After milling a contour along that plane, the workpiece or the tool is incremented to an adjacent parallel plane for the purpose of milling another contour on the workpiece. The slope of the surface element on the workpiece between the adjacent planes is computed, and the cutting tool is oriented so that the portion of the tool in contact with the workpiece along that surface element, possesses the computed slope. The cutting tool may be formed with cutting edges having straight-line segments interconnected and directed substantially along a parabolic surface. The slopes on the cutting edges of the tool vary in magnitude from substantially zero to infinity.

Abstract: A plurality of projectors are positioned in spaced relationship about an object with a surface to be geometrically analyzed. The projectors have cooperating masks which project onto the object illuminated patterns that subdivide the object into predetermined sections. Each mask has a predetermined pattern of sections, and is applied in sequence. The masks are cooperatively advanced in the projectors, with a separate illuminating pattern prevailing on the object each time that the masks are advanced. The combinations of the patterns on the masks define closely-spaced sections subdividing the object. The patterns are coded so that each section is uniquely defined in coded form. Cameras having the entire object within their field of view, photograph the object each time a separate mask is applied.

Abstract: An arrangement for locating points on a surface, in which the surface is irradiated selectively and subdivided into a number of sections. The subdivided sections are made to overlap so that a region of one section overlaps the region of a neighboring section. Images of the irradiated sections are recorded, and then scanned for purposes of defining the location of predetermined points within overlapping regions of the subdivided sections. The location of the points within overlapping regions is dependent on a predetermined relationship of irradiated intensities of the points obtained during the scanning procedure.

Abstract: A navigational plotter in which a geographical map or chart has marked thereon lines of position corresponding to the Omega or Loran navigation system aids, for example. The intersections of the lines of position with a base line on the chart are recorded in coded form on a separate strip of the chart. The coded signals on the chart strip are read out by the plotter, so that the position of the marker or indicator of the plotter may be read out directly in terms of lines of position corresponding to Omega or Loran systems. The marker or indicator of the plotter may also be positioned directly from information obtained in terms of Omega or Loran lines of position.

Abstract: The spatial locations of points defining a specular surface are determined by disposing the specular surface in the field of view of a lens and by using the specular surface to view by reflection an irradiated reference surface disposed successively in different positions. Reference surface indicia viewed in common line of sight relation to each specular surface point in such different positions of the reference surface are identified. Radiant energy reflected by a specular surface point through the lens node and the location of the lens node defines a further line in space. The intersection of this further line and such line of sight defines the spatial location of such specular surface point. Photographic records made with the reference surface in such different positions contain representations of reflected radiant energy for all specular surface points in the field of view of the lens and in line of sight relation to the reference surface.

Abstract: A recorder has plural spaced radiant energy issuing locations juxtaposed with an expanse of a recording medium. Upon exposure of the medium, it is advanced relative to the locations by an amount fractionally related to the spacing of the locations and is again exposed. The practice is repeated with the cumulative recording medium advance being no more than the spacing of the locations whereby a single film frame accommodates plural exposures. The radiant energy issuing locations may be defined by slots in a grating member juxtaposed with the recording medium in a lens field of view.

Abstract: The operating characteristics of a Downs-type electrolytic cell are improved by incorporating a sealed weir between the riser/cooler and the molten metal receiver and by providing means for venting inert gas from the receiver through the vapor space of the riser/cooler.

Abstract: A non-suction cup-type instrument for the insertion and removal of soft contact lenses is made of surgical rubber. It includes a central portion which looks somewhat like a suction cup having two sides cut away, and has small wedge-shaped contact lens-engaging elements or members protruding inwardly from each side of this suction cup-like member. It is again particularly noted that no suction cup action is involved in the present instrument. The instrument is also provided with two resilient arms which are aligned with the wedge-shaped contact lens engaging elements and which may be employed to support these elements and hold the lens more firmly once they are engaged. The space between the two wedge-shaped contact lens-engaging members, which incidentally have an overall configuration corresponding to opposed segments of a circle, is such that they are spaced apart by slightly less than the diameter of a contact lens.

Abstract: A centrifugal pump assembly, having a removable impeller assembly for use in conjunction with ink reservoirs of printing press apparatuses. There is provided a centrifugal pump assembly comprising motor mounting means for mounting the motor with respect to the cover member of an ink reservoir. The shaft of the motor extends downwardly into the reservoir and has secured thereto a coupling sleeve. The coupling sleeve includes means for securing the same to the motor shaft and means for releasably engaging the impeller shaft of the pump assembly. The impeller shaft is provided with a positive drive pin adapted to fit into a slot formed in the coupling sleeve to thereby properly align said impeller shaft with respect to the impeller housing and to insure proper positive connection of the impeller shaft with respect to the motor shaft for corresponding rotational movement therewith. An alternate embodiment utilizes a hollow barrier sleeve to prevent ink from traveling upwardly into the motor.

Abstract: A display arrangement in which a viewer experiences the effect of depth in conjunction with a two-dimensional display. Varying depth effects are applied to the two-dimensional display by moving rapidly transparent elements of varying thickness transversely to the direction of vision of the viewer. The transparent elements are held and mounted in a rotating disc in the form of segments, and the disc with the transparent segments is rotated rapidly in front of the two-dimensional display.

Abstract: A method for use in object examination involves the subdivision of a lens field of view into a succession of cells, the encoding of such cell succession and the making of a record of radiant energy reflected into the lens field of view from the object and issuing from the cell succession.