The invention is concerned with an arrangement for measuring the mobility of image points of a video image, particularly for the evaluation of the electrophoretic mobility of particles. The arrangement simultaneously evaluates an entire image contents of a plurality of image points without the necessity of subjectively preselecting individual image points. The digitilized image signal of the video image is logical combined with the line and column scanning signals of the video image in a logic m...

Method and apparatus for generating image-forming envelope and other wave forms for image display of an area or an object whose image is desired to be simulated. The image-forming envelope wave forms for complex objects and complex area silhouettes are formed as composites of component areas forming the silhouette outline to be imaged in signal form and displayed. Object attitude variations, range variations, and observer-to-object geometry is accommodated.

The invention relates to an arrangement for automatically focusing the image of an object, obtained by an objective lens system onto an image plane, wherein a setting device is provided which is controlled by photo-electric sensors and which determines the optimum distances of the objective lens system from the image plane. In accordance with the invention, a CTD image sensor is disposed in the image plane, the read-out signals of which are obtained for a sequence of objective settings, integrat...

An image forming material comprising a support having thereon a layer composed of a Ge-S composition or a Ge-S-X composition wherein X represents at least one element selected from the group consisting of Al, Si, Mg, Ti, V, Mn, Co, Ni, Sn, Zn, Pd, In, Se, Te, Fe, I, P and O which undergoes a structural change capable of being detected optically, electrically or chemically upon exposure imagewise to light wherein the Ge-S or Ge-S-X composition layer has a thickness of at least about 300 A and con...

The invention relates to an arrangement for automatically focusing the image of an object, obtained by an objective lens system, onto an image plane by adjustment of the distance of the objective lens system or a portion thereof from such image plane. Two optical devices which are mutually offset transversely to the optical axis, are provided for obtaining auxiliary images of the object, which are photoelectrically analyzed with respect to one another. The minimum difference signal therebetween ...

A positioning control circuit for locating a document image frame with respect to the scanning field of a camera in which the video and sync signals output from the camera are processed to determine the existence of a document reference mark within the camera field, as well as the coordinate location relative to the camera field, of a specific point within the reference mark. The actual coordinate position of the specific point within the reference mark is compared with a desired coordinate loca...

In an image exposure device for applying the information of a stationary original to a moving photosensitive medium by a movable scanning mirror through a slit, there is provided a plurality of movable mirrors disposed on an endless track to scan the image light from the original only when they are moving in one direction. A projection lens is provided to project therethrough the image light upon the photosensitive medium.

An image pickup tube comprises a cylindrical envelope, a target disposed at the front portion of said envelope, and an electron gun assembly so housed in said envelope as to shoot electron beams against said target, said target having a signal pickup electrode disposed outside the effective scanning region of the target.

A film mask adapted to retain one or more discrete film images. The mask comprises a flat body member having one or more apertures therein. The body member is provided with a reflective surface which is non-transmitting to heat and light. The opposite surface of the body member is provided with an adhesive to secure one or more discrete film images for viewing through a respective one of the apertures.

The gray-scale information in a scanned image is presented on a bi-level display medium illustratively using the known ordered dither technique. In particular, the image is scanned in a matrix of picture elements, each corresponding to a different cell of the display medium. A dither threshold value is assigned to each picture element from a predetermined dither matrix. If the intensity of any given picture element is greater than the dither threshold value assigned thereto, the corresponding di...