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| Number | Title | Issue Date |
| 7289633 | System and method for integral transference of acoustical events A sound system for capturing and reproducing sounds produced by a plurality of sound sources. The system comprises a device for receiving sounds produced by the plurality of sound sources and converting the separately received sounds to a plurality of separate audio... | 10/30/2007 |
| 7259897 | System, method and apparatus for direct imaging in ultrasonic holography An acoustical holographic imaging method and apparatus for introducing a reference wave into a hologram surface such that the reference wave does not interfere with an object placed adjacent to or in close proximity to the hologram surface. More particularly, the ul... | 08/21/2007 |
| 6831874 | Ultrasonic holography detector There is disclosed an improved ultrasonic hologram or other ultrasonic imaging process that accurately forms phase and amplitude information of the hologram in a manner that renders the unit relatively insensitive to environment vibrations, and provides long mainten... | 12/14/2004 |
| 6757215 | Apparatus and process modifications in ultrasonic holography to improve image quality A method and apparatus for generating an acoustic holographic image having a plurality of pulses with different characteristic parameters from each other. More particularly, a sequence contains a plurality of pulses which have different characteristic parameters fro... | 06/29/2004 |
| 6590830 | Apparatus and process modifications in ultrasonic holography to improve image quality There is disclosed a series of process and apparatus modifications to ultrasonic holography imaging systems that each or together function to enhance image quality of ultrasonic holography images. Specifically, there is disclosed a process and apparatus f... | 07/08/2003 |
| 6353576 | Detector in ultrasonic holography There is disclosed an improved ultrasonic hologram or other ultrasonic imaging process that accurately forms phase and amplitude information of the hologram in a manner that renders the unit relatively insensitive to environment vibrations, and provides l... | 03/05/2002 |
| 5696628 | Method for manufacturing optical components with periodic or quasi-periodic optical properties A method for manufacturing optical components having a periodic or quasi-periodic structure such as diffraction gratings, volume holograms or distributed feedback mirrors in optical fibers. An optical medium is subjected to acoustic waves which induce per... | 12/09/1997 |
| 5212571 | Ultrasonic holographic imaging apparatus having zoom feature The preferred embodiment of this invention is illustrated in FIG. 2 showing an ultrasonic holographic imaging apparatus 50 having a multiple lens system 52 that is capable of providing both zoom and focus capability. The system 52 includes lens 54 and 56 ... | 05/18/1993 |
| 5184230 | Underwater inspection apparatus and method A holographic recording and reproducing system for recording holographic images of an object positioned in a first medium and replaying said images in a second medium incorporates means for enhancing the relative sensitivity of the system to radiation cap... | 02/02/1993 |
| 5179455 | Ultrasonic holographic imaging apparatus having an improved optical reconstruction system A preferred embodiment of the optical reconstruction assembly 50 in which the assembly 50 includes an assembly housing 52 that is a unitary unit for supporting a spatial filter 72 and a light source 74 in a single plane at the optical length "L" from a co... | 01/12/1993 |
| 4977601 | Method of recognizing a fingerprint A method of detecting fingerprints by sensing scanning with ultrasonic waves. For comparison, an acoustic hologram of the characteristics of the respective finger is disposed in an identification card. The hologram is compared in a recognition device with... | 12/11/1990 |
| 4826268 | Hologon scanner system A hologon scanner system in which a pair of laser beams which are collinear with each other are deflected by a common hologon scanner. The beams are initially linearly polarized in orthogonal directions and are combined in a polarization sensitive beam co... | 05/02/1989 |
| 4609890 | Bulk acoustic wave signal processing devices An acoustic wave signal processing device which in a preferred embodiment utilizes at least one holographic grating formed within a portion of the interior of a substrate which is capable of supporting the propagation of bulk acoustic wave signals therein... | 09/02/1986 |
| 4597630 | Self-derived reference beam holography using a dove prism A method and associated system for providing interference patterns generated from light, including visible, ultraviolet and infrared, carrying desired information comprises the steps of and associated apparatus for modulating a light beam emanating from a... | 07/01/1986 |
| 4279462 | Method of holographic processing of waves A new method for holographic processing of waves by means of an optical system is disclosed. The method is based on the generation of an unrecorded hologram, herein denoted virtual hologram, which satisfies optical requirements. The virtual hologram corre... | 07/21/1981 |
| 4093382 | Hybrid holographic non-destructive test system An automatic hybrid holograhic non-destructive testing (HNDT) method and system capable of detecting flaws or debonds contained within certain materials. This system incorporates the techniques of optical holography, acoustical/optical holography and holo... | 06/06/1978 |
| 4012711 | Process and apparatus for recording acoustical holograms An apparatus and method for recording acoustical holograms characterized by the transmitting transducers having a directional characteristic, a transducer, which is either the transmitting or the receiving transducer, is mounted for rotation about at leas... | 03/15/1977 |
| 3996552 | Device for providing a hologram of an insonified object A device for providing a hologram of an object which may be converted to an optical image in real time. The device is part of an acoustical holographic system which uses a source of coherent acoustic radiation to irradiate the object which reflects the ac... | 12/07/1976 |
| 3964032 | Optical system for storing information A wideband holographic information storage system records Fourier holograms on film in rapid succession, each hologram storing 128 bits of data. The hologram fringe pattern is held stationary by varying the reference beam frequency to track the variations... | 06/15/1976 |
