Abstract: This disclosure depicts a ray beam converter having a rotary mirror driven by a motor, for reflecting ray beams to convert the same into rotary scanning ray beams in an optical measuring instrument wherein the ray beams from a beam generator are converted into the rotary scanning ray beams to be scanned in one direction and dimensions of a workpiece to be measured are measured by utilization of the rotary scanning ray beams. A rotor of the motor is rotatably supported by bearings at a plurality of positions in a direction of the rotary axis of the motor, and the rotary mirror is integrally formed on the rotor at a portion of the rotor supported by at least two bearings to each other out of the bearings. The rotary mirror is integrally formed on the rotor at a portion of the rotor supported by at least two bearings, and the rotor is rotatably coupled to a spindle affixed to a stator of the motor through the bearing.
Abstract: A shutterless optical system for viewing motion pictures, especially suitable for an 8 mm viewer, is disclosed in which the film moves continuously in a circular path around the optical center of a lens. The motion of the film is compensated by a rotating mirror wheel--a disk or wheel of outward-facing flat mirrored surfaces. The error in one dimension ordinarily resulting from the curvature of the film path is avoided by use of a line light source and a lens between the source and the film.
Abstract: A device is described for compensating for the movement of a cinematographic films through a camera or projector. By using the device, so intermittent film motion through the gate of the camera or projector can be dispensed with and the film can be moved continuously therethrough the camera or projector.The invention lies in the use of a plurality of inverting reflectors typically Amici prisms (70) moving in the same direction as the film (20) but at one half the speed of the film. The path of the prisms (70) is determined by a straight line segment (74) of a track (72), the straight line segment (74) being parallel to the direction of movement of the film (20).By illuminating the film over a width of at least one and a half frames using a condenser lens (18) so a number of partial images are obtained which are reconstituted in the optics so as to form in the projected image a composite frame which in general will be made up of two or three images of frame parts from two or three adjoining frames.
October 22, 1979
Date of Patent:
March 23, 1982
PA Management Consultants Limited
Nigel J. R. Dashwood, Dexter R. Plummer
Abstract: A photographing- or playback- device for a continuous photo picture carrier which is moved along a guide track by means of a drive device, particularly for motion picture film, with an optical imaging system and at least one mirrored surface which is movable about an axis, particularly a polygonal set of mirrors for the optical equalization of the image shifting as well as a light source if necessary. In the optical path between the guide track of the picture carrier and the mirror there is provided a partially-mirrored surface, which surface is inclined relative to the optical path and forms a part of an autocollimation system. By the partially-mirrored surface a part of the beam rays is deflectable, whereby the axis of the optical imaging system runs inclined or transverse relative to the beam axis (which beam axis runs between the guide track and the mirror) and runs to, or respectively from, the partially-mirrored surface, and the axis of the mirror also is arranged on the beam axis.
Abstract: An optical scanner system such as a projector for the continuous transmission of images to provide image immobilization is provided. The optical scanner system includes an illumination system, a scanner mechanism, and a projection lens system. The scanner mechanism is capable of creating virtual images of successive film frames with at least one virtual image point of each film frame positioned on a stationary locus point and at least another virtual image point offset from the stationary image locus point and relatively movable during a scanning movement. The scanner mechanism can, for example, be of a reflective or refractive polygon geometry. The specific parameters of the projection lens system and illumination system recognizes the inherent limitations of the dynamic keystoning aberration in scanner assemblies and seeks to nullify its effect in the projected real image. The projection means is of a telecentric design.
Abstract: The present invention provides a multifaceted reflecting polygon scanner system that is suitable for incorporation into a projector, camera, or other optical scanning or image immobilizing apparatus. The rotating reflecting optical system of the present invention, is capable of being combined with a continuous film transport to produce an overlap frame dissolve of sequential frames for optical immobilization of a projected image. The present invention includes a primary roof reflecting polygon, a secondary reflecting polygon, and an image surface. By proper choice of the polygon parameters and their juxtaposition relative to the image surface, the present invention uniquely provides a significantly higher relative aperture with minimal kinetic aberrations such as dynamic keystone distortion and minimal static aberrations. In one embodiment, a pair of roof reflectors of a 60.degree. and 90.degree.