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US Patent 6636336 - Apparatus for making holograms including means for controllably varying a beamsplitter
US Patent Issued on October 21, 2003
Estimated Patent Expiration Date:
October 4, 2021Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
October 4, 2021Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA method and apparatus for making holograms includes a technique for exposing a film substrate or other light-sensitive medium to consecutive two dimensional images, together representative of a physical three-dimensional system, to generate a three dimensional hologram of the physical system. Low beam ratios are employed to superimpose multiple (20-300) images on the substrate. Each image is relatively weak, but the combination of the series of weak images ultimately appears as a single clearly defined hologram.Other References
| InventorAssigneeApplicationNo. 09/971350 filed on 10/04/2001US Classes:359/35, Hardware for producing a hologram359/1, HOLOGRAPHIC SYSTEM OR ELEMENT359/22, For producing or reconstructing images from multiple holograms (e.g., color, etc.)359/24Superimposed holograms onlyField of Search359/1, HOLOGRAPHIC SYSTEM OR ELEMENT359/22, For producing or reconstructing images from multiple holograms (e.g., color, etc.)359/23, Holographic stereogram359/24, Superimposed holograms only359/30, Having optical element between object and recording medium359/35Hardware for producing a hologramExaminersPrimary: Juba, John Jr.Assistant: Boutsikaris, Leo Attorney, Agent or FirmUS Patent References3037419, 3444919, 3542449, 3560210, 3594060, 3614426, 3615123, 3652144, 3751658, 3774986, 3838903, 3890041, 3903360, 3944322, Light filtering arrangement for holographic displaysIssued on: 03/16/1976 Inventor: Benton4078177, Layer-wise reproduction of three-dimensional objects by simultaneous super-position of encoded images Issued on: 03/07/1978 Inventor: Tiemens4623214, Holograms Issued on: 11/18/1986 Inventor: Bazargan4623215, Holograms Issued on: 11/18/1986 Inventor: Bazargan4655539, Hologram writing apparatus and method Issued on: 04/07/1987 Inventor: Caulfield , et al.4749257, Radiological installation with adjustable transmission optical attenuator Issued on: 06/07/1988 Inventor: Klausz4925260, One step rainbow holography Issued on: 05/15/1990 Inventor: Fisher, et al.4960314, Diffraction optics diffusing screen laminate for full color on-axis viewing Issued on: 10/02/1990 Inventor: Smith, et al.4983004, Apparatus for three-dimensional viewing of magnetic resonance imaging tomograms Issued on: 01/08/1991 Inventor: Takeya, et al.4992346, Production of holograms Issued on: 02/12/1991 Inventor: Ashford, et al.5016950, Full-color zero-order suppressed diffraction optics diffusing screen/louver filter laminate Issued on: 05/21/1991 Inventor: Smith5048925, Quasi volume diffracting structures Issued on: 09/17/1991 Inventor: Gerritsen, et al.5117296, Apparatus and synthetic holography Issued on: 05/26/1992 Inventor: Hoebing5144461, Portable holographic recording apparatus Issued on: 09/01/1992 Inventor: Horan5198913, Apparatus for displaying three-dimensional image by using Pockels readout optical modulator Issued on: 03/30/1993 Inventor: Toyoda, et al.5213959, Silver halide photographic material Issued on: 05/25/1993 Inventor: Saitou, et al.5216527, Holographic collation Issued on: 06/01/1993 Inventor: Sharnoff, et al.5229585, Film cartridge bar code scanner and controller for a digital imaging system Issued on: 07/20/1993 Inventor: Lemberger, et al.5236815, Class of masked stabilizers in photographic materials or developing solutions Issued on: 08/17/1993 Inventor: Dewanckele, et al.5260815, Light writing type projection display using polymer-dispersed liquid crystal and liquid crystal television set as image light source Issued on: 11/09/1993 Inventor: Takizawa5291317, Holographic diffraction grating patterns and methods for creating the same Issued on: 03/01/1994 Inventor: Newswanger5317435, Holographic recording apparatus having a liquid crystal modulator including a diffuser with plural phase shift regions Issued on: 05/31/1994 Inventor: Kasazumi, et al.5502581, Hologram manufacturing method and apparatus Issued on: 03/26/1996 Inventor: Sudo, et al.5592313, Methods and apparatus for making holograms Issued on: 01/07/1997 Inventor: Hart5745267, Apparatus for making holograms including a variable beam splitter assembly Issued on: 04/28/1998 Inventor: Hart5796500, Methods and apparatus for making holograms Issued on: 08/18/1998 Inventor: Hart6151143Methods and apparatus for making holograms including multiple two-dimensional images Issued on: 11/21/2000 Inventor: Hart International ClassesG03H 1/26 (20060101)G03H 1/04 (20060101) G03H 1/28 (20060101) |
