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| Number | Title | Issue Date |
| 4589723 | Holographic endoscope A holographic endoscope transmits light to an object and receives and transmits the image of that object. The light transmitted is used to illuminate an object with one of two beams which are derived from a single laser, while the image received is transm... | 05/20/1986 |
| 4565426 | Beam splitter The invention provides beam splitter for use in high power multi-wavelength laser holography. The beam splitter comprises a bi-refringent prism 12 through which passes the beam to be split the prism 12 splitting the beam into two separate beams having mut... | 01/21/1986 |
| 4478481 | Production of diffraction limited holographic images An apparatus for the production of a holographic image of a subject disposed at a subject plane includes a source of coherent light divided by a beamsplitter into a reference beam and a subject beam. The subject beam is directed towards the subject throug... | 10/23/1984 |
| 4474421 | Apparatus and method for recording holographic images of human subjects Safety mechanisms for use in recording holographic images of human subjects are disclosed for preventing a human subject from exposure to the reference beam and the object beam. The safety mechanisms comprise an array of light generating elements, and ass... | 10/02/1984 |
| 4466693 | Holographic straightness meter A holographic straightness meter comprising an optical element and a hologram disposed on a moving member and one pair of reflection elements disposed on a fixed member. The object beam and reference beam from the optical element are reflected by the refl... | 08/21/1984 |
| 4458978 | Double beam systems for forming improved holograms The systems of the invention form improved reflection and transmission holograms utilizing two beams and eliminating all of the higher energy spurious holographic recordings that are caused by reflections of rays from the outer surfaces of the cover plate... | 07/10/1984 |
| 4392709 | Method of manufacturing holographic elements for fiber and integrated optic systems An improved method of manufacturing holographic elements for fiber and integrated optic systems in which a spatially and temporally coherent beam of electromagnetic radiation is divided into two beam paths. The first beam path and the second beam path are... | 07/12/1983 |
| 4364627 | Method and system for constructing a composite hologram Techniques for making individual narrow lenticular holograms for a composite drum shaped hologram wherein the vertical and horizontal aspects of an object beam and of an image therein are optically processed independently of each other. A very narrow lent... | 12/21/1982 |
| 4289372 | Technique for recording a hologram suitable for use in optical retrieval system A hologram recording system useful for recording holograms for use on a film strip tape in an optical retreival system is disclosed. The recording system permits accurate centering of a selected one of a series of frames. A hologram for use on a film stri... | 09/15/1981 |
| 4284324 | Acousto-optical imagery system based on coherent holographic detection in real time The invention relates to the acousto-optical imagery of objects transmitting ultrasonic waves; an optical image diffracted by the action of an ultrasonic wave is detected by coherent detection in an electro-optical and photoconductive holographic recordin... | 08/18/1981 |
| 4283109 | Method and apparatus for making wide exit pupil viewable holograms In a method and apparatus for recording a holographic image on a photosensitive medium or film which is capable of being viewed from a wide vertical viewing angle when illuminated by incoherent light, a source of coherent light (10) is divided by splitter... | 08/11/1981 |
| 4269473 | Identification card with a hologram and a process for the production thereof An identification card, which has an increased safeguard against counterfeiting, comprises both a hologram containing information and information which is visible recorded in a single layer of recording material disposed on a substrate. The card is produc... | 05/26/1981 |
| 4223975 | Aberration correction of magnified holographic images In the process of reconstruction of a virtual image of a light line having one end disposed at infinity with respect to the observer from a hologram of a shorter light line by shifting the position of the reconstructing light source relative to the hologr... | 09/23/1980 |
| 4212536 | Holographic subtraction with phase modulation to distinguish phase and amplitude differences Two substantially identically patterned transparencies, i.e. a master photomask and a copy thereof, are compared with each other by transluminating the master with an object beam, producing a hologram of that master by letting the object beam interfere wi... | 07/15/1980 |
| 4133600 | Method of manufacturing and utilizing holographic lens means Holographic lenses are formed on a substantially transparent scanning disc wherein a line focus is the object for each hologram. Such hologram is then used to reconstruct the line focus at the location of the record to be scanned, thereby alleviating tole... | 01/09/1979 |
| 4118685 | Holographic signature processor A signature is holographically recorded for correlation and parallel procing against a large library of signatures. A transient electrical signal produces a pressure wave in an optical wavefront modulator where it is frozen in position by a picosecond la... | 10/03/1978 |
| 4082415 | Holographic lens array and method for making the same A novel hologram functioning as a multiple lenslet array of high density in which the lenslets have selected small spacings and relatively long focal lengths is disposed in a holographic data recording system to provide an object beam along a selected axi... | 04/04/1978 |
| 4082431 | Image processing system using incoherent radiation and spatial filter hologram A linear optical processing system in which a spatial filter in the form of a Fourier transform hologram is included with a lens for processing incoherent electromagnetic radiation. Such a system provides a given real, two-dimensional transfer function fo... | 04/04/1978 |
| 4043653 | Holographic high resolution contact printer A holograph high resolution contact printer for use in transferring high resolution information, which is in the form of a pattern on a transparency, from the transparency to the light-sensitive photoresist material front surface of a light-recording medi... | 08/23/1977 |
| 4024513 | Optical system for the storage of selectively erasable binary data arranged in the form of holographically recorded pages The present invention relates to optical systems for the storage in the form of elementary holograms, of pages of binary data, said elementary hologram being stored in a two-dimensional or three-dimensional photosensitive medium. The system in accordance ... | 05/17/1977 |
| 3993399 | Universal holographic optics orientation assembly A holographic optics orientation assembly for a holographic recording unit having a laser holographic recording system for recording holograms of subjects situated within a holographic recording field of the recording system. The orientation assembly is a... | 11/23/1976 |
| 3990773 | Binary-coded Fraunhofer hologram recording technique An array of equi-spaced photodetectors can be used to detect the reconstructed image of a binary-coded Fraunhofer hologram read out at a different wavelength from that employed in recording the hologram, without the chance of spurious data bits due to rei... | 11/09/1976 |
| 3947085 | Method of producing a hologram with an orthoscopic image A method of producing a hologram with an orthoscopic, at least partially real image of an object is disclosed. According to the method, the object is recorded on a first hologram and is then reconstructed from this hologram and recorded on a second hologr... | 03/30/1976 |
| 3941450 | Device for recording a matrix of holographic lenses The invention relates to a device for recording a matrix of holographic lenses such that each lens, upon illumination by a monochromatic parallel beam produces a diffracted beam passing by a same common fixed aperture, which may be the pupil of a lens. In... | 03/02/1976 |
| 3937555 | Holographic motion picture camera with doppler shift compensation A holographic motion picture camera for producing three dimensional images employing an elliptical optical system and where there is provided in one of the beam paths (the object or reference beam path) a motion compensator which enables the camera to pho... | 02/10/1976 |
